remove debug code

lab05 ready
Merge branch 'master' of https://gitlab.com/I237-2016/skeleton
2016-12-02 13:22:51 +02:00 · 2016-12-01 16:19:28 +02:00 · 2016-12-01 14:41:42 +02:00 · 2016-12-01 14:40:57 +02:00 · 2016-12-01 14:39:17 +02:00 · 2016-12-01 14:38:58 +02:00
33 changed files with 4728 additions and 201 deletions
--- a/30
+++ b/30
@ -8,6 +8,7 @@ CC = avr-gcc
 OBJCOPY = avr-objcopy
 AVRDUDE = avrdude
 CODE_FORMATTER = tooling/format-code.sh
 AVRSIZE = avr-size
 BOARD = atmega2560
@ -22,7 +23,8 @@ ELF = $(BINDIR)/$(BOARD)-user-code.elf
 # Source files. wildard "uses" all .c files in src directory
 SRCDIR = src
-SRC = $(wildcard $(SRCDIR)/*.c)
+BUILD_LIBS_DIR = lib
 SRC = $(wildcard $(SRCDIR)/*.c $(BUILD_LIBS_DIR)/*/*.c)
 # Define object files from .c files defined above
 OBJ=$(SRC:.c=.o)
@ -41,13 +43,19 @@ CFLAGS =	-Wall \
 			-Werror \
 			-Wfatal-errors \
 			-Os \
 			-flto \
 			-fdata-sections \
 			-ffunction-sections \
 			-mmcu=$(BOARD) \
 			-DF_CPU=16000000UL \
 			-DGIT_DESCR=\"$(shell git describe --abbrev=6 --dirty --always --tags --long)\" \
 			-ffreestanding \
 			-std=c11
 # Linker flags
-LDFLAGS = -mmcu=$(BOARD)
+LDFLAGS =	-mmcu=$(BOARD) \
 			-flto \
 			-Wl,-gc-sections
 OBJCOPYARGS =	-O ihex \
 				-R .eeprom
@ -61,6 +69,9 @@ AVRDUDEARGS =	-p $(BOARD) \
 				-V \
 				-D
 AVRSIZEARGS =	-C \
 				--mcu=$(BOARD)
 all: $(ELF) $(TARGET)
 %.o : %.c
@ -76,11 +87,22 @@ clean:
 #Do not remove .placeholder in BINDIR
 	find $(BINDIR) -type f -not -name '.placeholder' -print0 | xargs -0 rm -f --
 	rm -f $(SRCDIR)/*.o
 	rm -fr $(BUILD_LIBS_DIR)/*/*.o
 install:
 	@if [ ! -c "$(ARDUINO)" ]; then \
 		echo -e "\n\nEnvironment variable ARDUINO is \"$(ARDUINO)\" and that is invalid."\
 				"\nDid you do \"export ARDUINO=/dev/ttyACM0\" before running make install?"\
 				"\nAlso make sure that ARDUINO env var points to a valid tty device\n\n"; \
 		exit 1;\
 	fi
 	$(AVRDUDE) $(AVRDUDEARGS) -U flash:w:$(TARGET)
 format:
-	$(CODE_FORMATTER) $(SRC)
+	$(CODE_FORMATTER) $(SRCDIR)/*.c
-.PHONY: clean install format
+size:
 	$(AVRSIZE) $(AVRSIZEARGS) $(ELF)
 .PHONY: clean install format size
--- a/README.md
+++ b/README.md
@ -0,0 +1,41 @@
 # I237 Hardware Programming
 This here is my repository for hardware programming course at
 Estonian IT College that is based around a
 [Arduino Mega 2560](https://www.arduino.cc/en/Main/ArduinoBoardMega2560).
 This code us usualy updated once every two weeks when a new excersice is put up
 by Silver Kits.
 # How to install
 Currently to test this code you have to clone the repository
 ```bash
 git clone https://git.wut.ee/arti/i237.git hardware
 cd hardware
 ```
 And export a enviroment variable that points to a Arduino Mega board. The
 real path will depend on the OS and Computer that you are using. For me it is
 usualy `/dev/ttyACM0`.
 ```bash
 export ARDUINO=/dev/ttyACM0
 ```
 After that you can `make` the project.
 ```bash
 make clean
 make
 make install
 ```
 You can also chekcout previous labs using `git checkout <lab name>`. For example
 ```bash
 git checkout lab02
 ```
 Don't forget to `make clean` after each checkout!
--- a/doc/arduino-mega-lcd1602-keypad-shield-placement.png
+++ b/doc/arduino-mega-lcd1602-keypad-shield-placement.png
--- a/doc/arduino-mega-lcd1602-keypad-shield-wiring.markdown
+++ b/doc/arduino-mega-lcd1602-keypad-shield-wiring.markdown
@ -0,0 +1,53 @@
 # Arduino Mega Arduino LCD1602 Keypad shield wiring
 ## Introduction
 This shield consists of three logical parts:
 - 1602LCD with HD4780 Dot Matrix Liquid Crystal Display Controller/Driver.
 - 6 button keypad.
 - Analog pins, 5V and GND pass through.
 <div class=pagebreak></div>
 ## Connection to Arduino Mega
 Following illustration shows how shield is connected to Arduino mega board.
 ![arduino-mega-lcd1602-keypad-shield-placement.png](arduino-mega-lcd1602-keypad-shield-placement.png)
 Image source: [sainsmart.com](http://www.sainsmart.com/media/catalog/product/2/_/2_16_6.jpg)
 Additional installation details and tutorials can be found with help of keywords [Arduino 1602 lcd keypad shield tutorial](https://www.google.ee/webhp?q=Arduino+1602+lcd+keypad+shield+tutorial).
 <div class=pagebreak></div>
 ## Wiring illustration
 ![arduino-mega-lcd1602-keypad-shield-wiring.png](arduino-mega-lcd1602-keypad-shield-wiring.png)
 Author: [Lauri Võsandi](http://lauri.võsandi.com/arduino/lcd1602-key-shield.html#hd44780)
 <div class=pagebreak></div>
 ## Wiring table
 | Signal | ATMega2560 port and pin | Arduino Mega 2560 pin | LCD 1602 Keypad shield | 1602 LCD pin | HD44780 pin |
 | --- | --- | --- | --- | --- | --- |
 | **LCD** | | | | |
 | Data bus DB4 | PORTG pin 5 | Digital pin 4 | 4 | 11 | DB4 |
 | Data bus DB5 | PORTE pin 3 | Digital pin 5 | 5 | 12 | DB5 |
 | Data bus DB6 | PORTH pin 3 | Digital pin 6 | 6 | 13 | DB6 |
 | Data bus DB7 | PORTH pin 4 | Digital pin 7 | 7 | 14 | DB7 |
 | Select register RS | PORTH pin 5 | Digital pin 8 | 8 | 4 | RS |
 | Start read/write E | PORTH pin 6 | Digital pin 9 | 9 | 6 | E |
 | Backlight control | PORTB pin 4 | Digital pin 10 | 10 | 16 | - |
 | Backlight 5V (via variable resistor ) | - |  - | - | 3 | - |
 | **Keypad** | | | | |
 | Buttons (select, up, right, down and left) | | Analog pin 0 | 0 | - |
 | Reset button | - | RESET | RESET | - |
 | **Pass through** | | | | |
 | Analog A1 .. A5 | | Analog pin 1 .. 5 | Analog pin 1 .. 5 | - |
 | **Common** | | | | |
 | 5V | - | 5V | VCC | 2 and 15 | Vcc |
 | Ground (GND) | GND | GND | pin 1 | GND | GND |
--- a/doc/arduino-mega-lcd1602-keypad-shield-wiring.png
+++ b/doc/arduino-mega-lcd1602-keypad-shield-wiring.png
--- a/doc/arduino-mega-usb-uart-wiring.markdown
+++ b/doc/arduino-mega-usb-uart-wiring.markdown
@ -6,12 +6,12 @@ This wiring schema uses only Tx from Arduino and is suitable to be used as stand
 ## Wiring illustration
-![Arduino Mega USB UART wiring.png](Arduino-Mega-USB-UART-wiring.png)
+![arduino-mega-usb-uart-wiring.png](arduino-mega-usb-uart-wiring.png)
 ## Wiring table
 | Signal | ATMega2560 port and pin | Arduino Mega 2560 pin | USB UART converter pin |
 | --- | --- | --- | --- |
-| Ground (GND) | - | GND | GND |
+| Ground (GND) | GND | GND | GND |
-| Transmit data  from Arduino (TxD) | PORTJ 1 (TXD3) | 14 (TX3) | TxD |
+| Transmit data  from Arduino (TxD) | PORTJ pin 1 (TXD3) | Digital pin 14 (TX3) | RxD |
--- a/doc/arduino-mega-usb-uart-wiring.png
+++ b/doc/arduino-mega-usb-uart-wiring.png
--- a/lib/andygock_avr-uart/LICENSE.txt
+++ b/lib/andygock_avr-uart/LICENSE.txt
@ -0,0 +1,11 @@
 Copyright (C) 2012 Andy Gock
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 any later version.
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
--- a/lib/andygock_avr-uart/README.md
+++ b/lib/andygock_avr-uart/README.md
@ -0,0 +1,56 @@
 avr-uart
 ========
 An interrupt driven UART Library for 8-bit AVR microcontrollers
 Maintained by Andy Gock
 https://github.com/andygock/avr-uart
 Derived from original library by Peter Fleury
 Interrupt UART library using the built-in UART with transmit and receive circular buffers.
 An interrupt is generated when the UART has finished transmitting or
 receiving a byte. The interrupt handling routines use circular buffers
 for buffering received and transmitted data.
 ## Setting up
 The `UART_RXn_BUFFER_SIZE` and `UART_TXn_BUFFER_SIZE` constants define
 the size of the circular buffers in bytes. Note that these constants must be a power of 2.
 You may need to adapt this constants to your target and your application by adding to your
 compiler options:
 	-DUART_RXn_BUFFER_SIZE=nn -DUART_TXn_BUFFER_SIZE=nn
 `RXn` and `TXn` refer to UART number, for UART3 with 128 byte buffers, add:
 	-DUART_RX3_BUFFER_SIZE=128 -DUART_TX3_BUFFER_SIZE=128
 UART0 is always enabled by default, to enable the other available UARTs, add the following
 to your compiler options (or symbol options), for the relevant USART number:
 	-DUSART1_ENABLED -DUSART2_ENABLED -DUSART3_ENABLED
 To enable large buffer support (over 256 bytes, up to 2^16 bytes) use:
 	-DUSARTn_LARGE_BUFFER
 Where n = USART number.
 Supports AVR devices with up to 4 hardware USARTs.
 ## Documentation
 Doxygen based documentation will be coming soon.
 ## Notes
 ### Buffer overflow behaviour
 When the RX circular buffer is full, and it receives further data from the UART, a buffer overflow condition occurs. Any new data is dropped. The RX buffer must be read before any more incoming data from the UART is placed into the RX buffer.
 If the TX buffer is full, and new data is sent to it using one of the `uartN_put*()` functions, this function will loop and wait until the buffer is not full any more. It is important to make sure you have not disabled your UART transmit interrupts (`TXEN*`) elsewhere in your application (e.g with `cli()`) before calling the `uartN_put*()` functions, as the application will lock up. The UART interrupts are automatically enabled when you use the `uartN_init()` functions. This is probably not the idea behaviour, I'll probably fix this some time.
 For now, make sure `TXEN*` interrupts are enabled when calling `uartN_put*()` functions. This should not be an issue unless you have code elsewhere purposely turning it off.
--- a/lib/andygock_avr-uart/uart.c
+++ b/lib/andygock_avr-uart/uart.c
--- a/lib/andygock_avr-uart/uart.h
+++ b/lib/andygock_avr-uart/uart.h
@ -0,0 +1,415 @@
 #ifndef UART_H
 #define UART_H
 /************************************************************************
 Title:    Interrupt UART library with receive/transmit circular buffers
 Author:   Andy Gock
 Software: AVR-GCC 4.1, AVR Libc 1.4
 Hardware: any AVR with built-in UART, tested on AT90S8515 & ATmega8 at 4 Mhz
 License:  GNU General Public License 
 Usage:    see Doxygen manual
 Based on original library by Peter Fluery, Tim Sharpe, Nicholas Zambetti.
 https://github.com/andygock/avr-uart
 LICENSE:
 	Copyright (C) 2012 Andy Gock
 	This program is free software; you can redistribute it and/or modify
 	it under the terms of the GNU General Public License as published by
 	the Free Software Foundation; either version 2 of the License, or
 	any later version.
 	This program is distributed in the hope that it will be useful,
 	but WITHOUT ANY WARRANTY; without even the implied warranty of
 	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 	GNU General Public License for more details.
 LICENSE:
    Copyright (C) 2006 Peter Fleury
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    any later version.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 ************************************************************************/
 /************************************************************************
 uart_available, uart_flush, uart1_available, and uart1_flush functions
 were adapted from the Arduino HardwareSerial.h library by Tim Sharpe on 
 11 Jan 2009.  The license info for HardwareSerial.h is as follows:
  HardwareSerial.h - Hardware serial library for Wiring
  Copyright (c) 2006 Nicholas Zambetti.  All right reserved.
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.
  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 ************************************************************************/
 /************************************************************************
 Changelog for modifications made by Tim Sharpe, starting with the current
  library version on his Web site as of 05/01/2009. 
 Date        Description
 =========================================================================
 05/12/2009  Added Arduino-style available() and flush() functions for both
 			supported UARTs.  Really wanted to keep them out of the library, so
 			that it would be as close as possible to Peter Fleury's original
 			library, but has scoping issues accessing internal variables from
 			another program.  Go C!
 ************************************************************************/
 /** 
 *  @defgroup avr-uart UART Library
 *  @code #include <uart.h> @endcode
 * 
 *  @brief Interrupt UART library using the built-in UART with transmit and receive circular buffers. 
 *
 *  This library can be used to transmit and receive data through the built in UART. 
 *
 *  An interrupt is generated when the UART has finished transmitting or
 *  receiving a byte. The interrupt handling routines use circular buffers
 *  for buffering received and transmitted data.
 *
 *  The UART_RXn_BUFFER_SIZE and UART_TXn_BUFFER_SIZE constants define
 *  the size of the circular buffers in bytes. Note that these constants must be a power of 2.
 *
 *  You need to define these buffer sizes in uart.h
 *
 *  @note Based on Atmel Application Note AVR306
 *  @author Andy Gock <andy@gock.net>
 *  @note Based on original library by Peter Fleury and Tim Sharpe.
 */
 /**@{*/
 #include <stdint.h>
 #include <avr/io.h>
 #if (__GNUC__ * 100 + __GNUC_MINOR__) < 304
 #error "This library requires AVR-GCC 3.4 or later, update to newer AVR-GCC compiler !"
 #endif
 /*
 * constants and macros
 */
 /* Enable USART 1, 2, 3 as required */
 #define USART0_ENABLED
 //#define USART1_ENABLED
 //#define USART2_ENABLED 
 #define USART3_ENABLED
 /* Set size of receive and transmit buffers */
 #ifndef UART_RX0_BUFFER_SIZE
 	#define UART_RX0_BUFFER_SIZE 128 /**< Size of the circular receive buffer, must be power of 2 */
 #endif
 #ifndef UART_RX1_BUFFER_SIZE
 	#define UART_RX1_BUFFER_SIZE 128 /**< Size of the circular receive buffer, must be power of 2 */
 #endif
 #ifndef UART_RX2_BUFFER_SIZE
 	#define UART_RX2_BUFFER_SIZE 128 /**< Size of the circular receive buffer, must be power of 2 */
 #endif
 #ifndef UART_RX3_BUFFER_SIZE
 	#define UART_RX3_BUFFER_SIZE 128 /**< Size of the circular receive buffer, must be power of 2 */
 #endif
 #ifndef UART_TX0_BUFFER_SIZE
 	#define UART_TX0_BUFFER_SIZE 128 /**< Size of the circular transmit buffer, must be power of 2 */
 #endif
 #ifndef UART_TX1_BUFFER_SIZE
 	#define UART_TX1_BUFFER_SIZE 128 /**< Size of the circular transmit buffer, must be power of 2 */
 #endif
 #ifndef UART_TX2_BUFFER_SIZE
 	#define UART_TX2_BUFFER_SIZE 128 /**< Size of the circular transmit buffer, must be power of 2 */
 #endif
 #ifndef UART_TX3_BUFFER_SIZE
 	#define UART_TX3_BUFFER_SIZE 128 /**< Size of the circular transmit buffer, must be power of 2 */
 #endif
 /* Check buffer sizes are not too large for 8-bit positioning */
 #if (UART_RX0_BUFFER_SIZE > 256 & !defined(USART0_LARGE_BUFFER))
 	#error "Buffer too large, please use -DUSART0_LARGE_BUFFER switch in compiler options"
 #endif
 #if (UART_RX1_BUFFER_SIZE > 256 & !defined(USART1_LARGE_BUFFER))
 	#error "Buffer too large, please use -DUSART1_LARGE_BUFFER switch in compiler options"
 #endif
 #if (UART_RX2_BUFFER_SIZE > 256 & !defined(USART2_LARGE_BUFFER))
 	#error "Buffer too large, please use -DUSART2_LARGE_BUFFER switch in compiler options"
 #endif
 #if (UART_RX3_BUFFER_SIZE > 256 & !defined(USART3_LARGE_BUFFER))
 	#error "Buffer too large, please use -DUSART3_LARGE_BUFFER switch in compiler options"
 #endif
 /* Check buffer sizes are not too large for *_LARGE_BUFFER operation (16-bit positioning) */
 #if (UART_RX0_BUFFER_SIZE > 65536)
 	#error "Buffer too large, maximum allowed is 65536 bytes"
 #endif
 #if (UART_RX1_BUFFER_SIZE > 65536)
 	#error "Buffer too large, maximum allowed is 65536 bytes"
 #endif
 #if (UART_RX2_BUFFER_SIZE > 65536)
 	#error "Buffer too large, maximum allowed is 65536 bytes"
 #endif
 #if (UART_RX3_BUFFER_SIZE > 65536)
 	#error "Buffer too large, maximum allowed is 65536 bytes"
 #endif
 /** @brief  UART Baudrate Expression
 *  @param  xtalCpu  system clock in Mhz, e.g. 4000000L for 4Mhz          
 *  @param  baudRate baudrate in bps, e.g. 1200, 2400, 9600     
 */
 #define UART_BAUD_SELECT(baudRate,xtalCpu) (((xtalCpu)+8UL*(baudRate))/(16UL*(baudRate))-1UL)
 /** @brief  UART Baudrate Expression for ATmega double speed mode
 *  @param  xtalCpu  system clock in Mhz, e.g. 4000000L for 4Mhz           
 *  @param  baudRate baudrate in bps, e.g. 1200, 2400, 9600     
 */
 #define UART_BAUD_SELECT_DOUBLE_SPEED(baudRate,xtalCpu) ((((xtalCpu)+4UL*(baudRate))/(8UL*(baudRate))-1)|0x8000)
 /* test if the size of the circular buffers fits into SRAM */
 #if defined(USART0_ENABLED) && ( (UART_RX0_BUFFER_SIZE+UART_TX0_BUFFER_SIZE) >= (RAMEND-0x60 ) )
 #error "size of UART_RX0_BUFFER_SIZE + UART_TX0_BUFFER_SIZE larger than size of SRAM"
 #endif
 #if defined(USART1_ENABLED) && ( (UART_RX1_BUFFER_SIZE+UART_TX1_BUFFER_SIZE) >= (RAMEND-0x60 ) )
 #error "size of UART_RX1_BUFFER_SIZE + UART_TX1_BUFFER_SIZE larger than size of SRAM"
 #endif
 #if defined(USART2_ENABLED) && ( (UART_RX2_BUFFER_SIZE+UART_RX2_BUFFER_SIZE) >= (RAMEND-0x60 ) )
 #error "size of UART_RX2_BUFFER_SIZE + UART_TX2_BUFFER_SIZE larger than size of SRAM"
 #endif
 #if defined(USART3_ENABLED) && ( (UART_RX3_BUFFER_SIZE+UART_RX3_BUFFER_SIZE) >= (RAMEND-0x60 ) )
 #error "size of UART_RX3_BUFFER_SIZE + UART_TX3_BUFFER_SIZE larger than size of SRAM"
 #endif
 /* 
 ** high byte error return code of uart_getc()
 */
 #define UART_FRAME_ERROR      0x0800              /**< Framing Error by UART       */
 #define UART_OVERRUN_ERROR    0x0400              /**< Overrun condition by UART   */
 #define UART_BUFFER_OVERFLOW  0x0200              /**< receive ringbuffer overflow */
 #define UART_NO_DATA          0x0100              /**< no receive data available   */
 /* Macros, to allow use of legacy names */
 #define uart_init(b)      uart0_init(b)
 #define uart_getc()       uart0_getc()
 #define uart_putc(d)      uart0_putc(d)
 #define uart_puts(s)      uart0_puts(s)
 #define uart_puts_p(s)    uart0_puts_p(s)
 #define uart_available()  uart0_available()
 #define uart_flush()      uart0_flush()
 /*
 ** function prototypes
 */
 /**
   @brief   Initialize UART and set baudrate 
   @param   baudrate Specify baudrate using macro UART_BAUD_SELECT()
   @return  none
 */
 extern void uart0_init(uint16_t baudrate);
 /**
 *  @brief   Get received byte from ringbuffer
 *
 * Returns in the lower byte the received character and in the 
 * higher byte the last receive error.
 * UART_NO_DATA is returned when no data is available.
 *
 *  @return  lower byte:  received byte from ringbuffer
 *  @return  higher byte: last receive status
 *           - \b 0 successfully received data from UART
 *           - \b UART_NO_DATA           
 *             <br>no receive data available
 *           - \b UART_BUFFER_OVERFLOW   
 *             <br>Receive ringbuffer overflow.
 *             We are not reading the receive buffer fast enough, 
 *             one or more received character have been dropped 
 *           - \b UART_OVERRUN_ERROR     
 *             <br>Overrun condition by UART.
 *             A character already present in the UART UDR register was 
 *             not read by the interrupt handler before the next character arrived,
 *             one or more received characters have been dropped.
 *           - \b UART_FRAME_ERROR       
 *             <br>Framing Error by UART
 */
 extern uint16_t uart0_getc(void);
 /**
 *  @brief   Peek at next byte in ringbuffer
 *
 * Returns the next byte (character) of incoming UART data without removing it from the
 * internal ring buffer. That is, successive calls to uartN_peek() will return the same
 * character, as will the next call to uartN_getc().
 *
 * UART_NO_DATA is returned when no data is available.
 *
 *  @return  lower byte:  next byte in ringbuffer
 *  @return  higher byte: last receive status
 *           - \b 0 successfully received data from UART
 *           - \b UART_NO_DATA           
 *             <br>no receive data available
 *           - \b UART_BUFFER_OVERFLOW   
 *             <br>Receive ringbuffer overflow.
 *             We are not reading the receive buffer fast enough, 
 *             one or more received character have been dropped 
 *           - \b UART_OVERRUN_ERROR     
 *             <br>Overrun condition by UART.
 *             A character already present in the UART UDR register was 
 *             not read by the interrupt handler before the next character arrived,
 *             one or more received characters have been dropped.
 *           - \b UART_FRAME_ERROR       
 *             <br>Framing Error by UART
 */
 extern uint16_t uart0_peek(void);
 /**
 *  @brief   Put byte to ringbuffer for transmitting via UART
 *  @param   data byte to be transmitted
 *  @return  none
 */
 extern void uart0_putc(uint8_t data);
 /**
 *  @brief   Put string to ringbuffer for transmitting via UART
 *
 *  The string is buffered by the uart library in a circular buffer
 *  and one character at a time is transmitted to the UART using interrupts.
 *  Blocks if it can not write the whole string into the circular buffer.
 * 
 *  @param   s string to be transmitted
 *  @return  none
 */
 extern void uart0_puts(const char *s );
 /**
 * @brief    Put string from program memory to ringbuffer for transmitting via UART.
 *
 * The string is buffered by the uart library in a circular buffer
 * and one character at a time is transmitted to the UART using interrupts.
 * Blocks if it can not write the whole string into the circular buffer.
 *
 * @param    s program memory string to be transmitted
 * @return   none
 * @see      uart0_puts_P
 */
 extern void uart0_puts_p(const char *s );
 /**
 * @brief    Macro to automatically put a string constant into program memory
 * \param    __s string in program memory
 */
 #define uart_puts_P(__s)       uart0_puts_p(PSTR(__s))
 #define uart0_puts_P(__s)      uart0_puts_p(PSTR(__s))
 /**
 *  @brief   Return number of bytes waiting in the receive buffer
 *  @return  bytes waiting in the receive buffer
 */
 extern uint16_t uart0_available(void);
 /**
 *  @brief   Flush bytes waiting in receive buffer
 */
 extern void uart0_flush(void);
 /** @brief  Initialize USART1 (only available on selected ATmegas) @see uart_init */
 extern void uart1_init(uint16_t baudrate);
 /** @brief  Get received byte of USART1 from ringbuffer. (only available on selected ATmega) @see uart_getc */
 extern uint16_t uart1_getc(void);
 /** @brief  Peek at next byte in USART1 ringbuffer */
 extern uint16_t uart1_peek(void);
 /** @brief  Put byte to ringbuffer for transmitting via USART1 (only available on selected ATmega) @see uart_putc */
 extern void uart1_putc(uint8_t data);
 /** @brief  Put string to ringbuffer for transmitting via USART1 (only available on selected ATmega) @see uart_puts */
 extern void uart1_puts(const char *s );
 /** @brief  Put string from program memory to ringbuffer for transmitting via USART1 (only available on selected ATmega) @see uart_puts_p */
 extern void uart1_puts_p(const char *s );
 /** @brief  Macro to automatically put a string constant into program memory */
 #define uart1_puts_P(__s)       uart1_puts_p(PSTR(__s))
 /** @brief   Return number of bytes waiting in the receive buffer */
 extern uint16_t uart1_available(void);
 /** @brief   Flush bytes waiting in receive buffer */
 extern void uart1_flush(void);
 /** @brief  Initialize USART2 (only available on selected ATmegas) @see uart_init */
 extern void uart2_init(uint16_t baudrate);
 /** @brief  Get received byte of USART2 from ringbuffer. (only available on selected ATmega) @see uart_getc */
 extern uint16_t uart2_getc(void);
 /** @brief  Peek at next byte in USART2 ringbuffer */
 extern uint16_t uart2_peek(void);
 /** @brief  Put byte to ringbuffer for transmitting via USART2 (only available on selected ATmega) @see uart_putc */
 extern void uart2_putc(uint8_t data);
 /** @brief  Put string to ringbuffer for transmitting via USART2 (only available on selected ATmega) @see uart_puts */
 extern void uart2_puts(const char *s );
 /** @brief  Put string from program memory to ringbuffer for transmitting via USART2 (only available on selected ATmega) @see uart_puts_p */
 extern void uart2_puts_p(const char *s );
 /** @brief  Macro to automatically put a string constant into program memory */
 #define uart2_puts_P(__s)       uart2_puts_p(PSTR(__s))
 /** @brief   Return number of bytes waiting in the receive buffer */
 extern uint16_t uart2_available(void);
 /** @brief   Flush bytes waiting in receive buffer */
 extern void uart2_flush(void);
 /** @brief  Initialize USART3 (only available on selected ATmegas) @see uart_init */
 extern void uart3_init(uint16_t baudrate);
 /** @brief  Get received byte of USART3 from ringbuffer. (only available on selected ATmega) @see uart_getc */
 extern uint16_t uart3_getc(void);
 /** @brief  Peek at next byte in USART3 ringbuffer */
 extern uint16_t uart3_peek(void);
 /** @brief  Put byte to ringbuffer for transmitting via USART3 (only available on selected ATmega) @see uart_putc */
 extern void uart3_putc(uint8_t data);
 /** @brief  Put string to ringbuffer for transmitting via USART3 (only available on selected ATmega) @see uart_puts */
 extern void uart3_puts(const char *s );
 /** @brief  Put string from program memory to ringbuffer for transmitting via USART3 (only available on selected ATmega) @see uart_puts_p */
 extern void uart3_puts_p(const char *s );
 /** @brief  Macro to automatically put a string constant into program memory */
 #define uart3_puts_P(__s)       uart3_puts_p(PSTR(__s))
 /** @brief   Return number of bytes waiting in the receive buffer */
 extern uint16_t uart3_available(void);
 /** @brief   Flush bytes waiting in receive buffer */
 extern void uart3_flush(void);
 /**@}*/
 #endif // UART_H 
--- a/lib/hd44780_111/hd44780.c
+++ b/lib/hd44780_111/hd44780.c
@ -0,0 +1,772 @@
 /*****************************************************************************
 Title  :   HD44780 Library
 Author :   SA Development
 Version:   1.11
 Modifications for: Arduino Mega 2560
                    Itead Studio Arduino 1602 LED Keypad Shield
 Modified by: Silver Kits <silver.kits@eesti.ee> October 2016
 *****************************************************************************/
 #include <avr/pgmspace.h>
 #include <avr/sfr_defs.h>
 #include <inttypes.h>
 #define __ASSERT_USE_STDERR
 #include <assert.h>
 #include "hd44780.h"
 #include "hd44780_settings.h"
 #if (USE_ADELAY_LIBRARY==1)
 #include "adelay.h"
 #else
 #define Delay_ns(__ns) \
    if((unsigned long) (F_CPU/1000000000.0 * __ns) != F_CPU/1000000000.0 * __ns)\
          __builtin_avr_delay_cycles((unsigned long) ( F_CPU/1000000000.0 * __ns)+1);\
    else __builtin_avr_delay_cycles((unsigned long) ( F_CPU/1000000000.0 * __ns))
 #define Delay_us(__us) \
    if((unsigned long) (F_CPU/1000000.0 * __us) != F_CPU/1000000.0 * __us)\
          __builtin_avr_delay_cycles((unsigned long) ( F_CPU/1000000.0 * __us)+1);\
    else __builtin_avr_delay_cycles((unsigned long) ( F_CPU/1000000.0 * __us))
 #define Delay_ms(__ms) \
    if((unsigned long) (F_CPU/1000.0 * __ms) != F_CPU/1000.0 * __ms)\
          __builtin_avr_delay_cycles((unsigned long) ( F_CPU/1000.0 * __ms)+1);\
    else __builtin_avr_delay_cycles((unsigned long) ( F_CPU/1000.0 * __ms))
 #define Delay_s(__s) \
    if((unsigned long) (F_CPU/1.0 * __s) != F_CPU/1.0 * __s)\
          __builtin_avr_delay_cycles((unsigned long) ( F_CPU/1.0 * __s)+1);\
    else __builtin_avr_delay_cycles((unsigned long) ( F_CPU/1.0 * __s))
 #endif
 #if !defined(LCD_BITS) || (LCD_BITS!=4 && LCD_BITS!=8)
 #error LCD_BITS is not defined or not valid.
 #endif
 #if !defined(WAIT_MODE) || (WAIT_MODE!=0 && WAIT_MODE!=1)
 #error WAIT_MODE is not defined or not valid.
 #endif
 #if !defined(RW_LINE_IMPLEMENTED) || (RW_LINE_IMPLEMENTED!=0 && RW_LINE_IMPLEMENTED!=1)
 #error RW_LINE_IMPLEMENTED is not defined or not valid.
 #endif
 #if (WAIT_MODE==1 && RW_LINE_IMPLEMENTED!=1)
 #error WAIT_MODE=1 requires RW_LINE_IMPLEMENTED=1.
 #endif
 #if !defined(LCD_DISPLAYS) || (LCD_DISPLAYS<1) || (LCD_DISPLAYS>4)
 #error LCD_DISPLAYS is not defined or not valid.
 #endif
 // Constants/Macros
 #define PIN(x) (*(&x - 2))           // Address of Data Direction Register of Port X
 #define DDR(x) (*(&x - 1))           // Address of Input Register of Port X
 //PORT defines
 #define lcd_rs_port_low() LCD_RS_PORT&=~_BV(LCD_RS_PIN)
 #if RW_LINE_IMPLEMENTED==1
 #define lcd_rw_port_low() LCD_RW_PORT&=~_BV(LCD_RW_PIN)
 #endif
 #define lcd_db0_port_low() LCD_DB0_PORT&=~_BV(LCD_DB0_PIN)
 #define lcd_db1_port_low() LCD_DB1_PORT&=~_BV(LCD_DB1_PIN)
 #define lcd_db2_port_low() LCD_DB2_PORT&=~_BV(LCD_DB2_PIN)
 #define lcd_db3_port_low() LCD_DB3_PORT&=~_BV(LCD_DB3_PIN)
 #define lcd_db4_port_low() LCD_DB4_PORT&=~_BV(LCD_DB4_PIN)
 #define lcd_db5_port_low() LCD_DB5_PORT&=~_BV(LCD_DB5_PIN)
 #define lcd_db6_port_low() LCD_DB6_PORT&=~_BV(LCD_DB6_PIN)
 #define lcd_db7_port_low() LCD_DB7_PORT&=~_BV(LCD_DB7_PIN)
 #define lcd_rs_port_high() LCD_RS_PORT|=_BV(LCD_RS_PIN)
 #if RW_LINE_IMPLEMENTED==1
 #define lcd_rw_port_high() LCD_RW_PORT|=_BV(LCD_RW_PIN)
 #endif
 #define lcd_db0_port_high() LCD_DB0_PORT|=_BV(LCD_DB0_PIN)
 #define lcd_db1_port_high() LCD_DB1_PORT|=_BV(LCD_DB1_PIN)
 #define lcd_db2_port_high() LCD_DB2_PORT|=_BV(LCD_DB2_PIN)
 #define lcd_db3_port_high() LCD_DB3_PORT|=_BV(LCD_DB3_PIN)
 #define lcd_db4_port_high() LCD_DB4_PORT|=_BV(LCD_DB4_PIN)
 #define lcd_db5_port_high() LCD_DB5_PORT|=_BV(LCD_DB5_PIN)
 #define lcd_db6_port_high() LCD_DB6_PORT|=_BV(LCD_DB6_PIN)
 #define lcd_db7_port_high() LCD_DB7_PORT|=_BV(LCD_DB7_PIN)
 #define lcd_rs_port_set(value) if (value) lcd_rs_port_high(); else lcd_rs_port_low();
 #if RW_LINE_IMPLEMENTED==1
 #define lcd_rw_port_set(value) if (value) lcd_rw_port_high(); else lcd_rw_port_low();
 #endif
 #define lcd_db0_port_set(value) if (value) lcd_db0_port_high(); else lcd_db0_port_low();
 #define lcd_db1_port_set(value) if (value) lcd_db1_port_high(); else lcd_db1_port_low();
 #define lcd_db2_port_set(value) if (value) lcd_db2_port_high(); else lcd_db2_port_low();
 #define lcd_db3_port_set(value) if (value) lcd_db3_port_high(); else lcd_db3_port_low();
 #define lcd_db4_port_set(value) if (value) lcd_db4_port_high(); else lcd_db4_port_low();
 #define lcd_db5_port_set(value) if (value) lcd_db5_port_high(); else lcd_db5_port_low();
 #define lcd_db6_port_set(value) if (value) lcd_db6_port_high(); else lcd_db6_port_low();
 #define lcd_db7_port_set(value) if (value) lcd_db7_port_high(); else lcd_db7_port_low();
 //PIN defines
 #define lcd_db0_pin_get() (((PIN(LCD_DB0_PORT) & _BV(LCD_DB0_PIN))==0)?0:1)
 #define lcd_db1_pin_get() (((PIN(LCD_DB1_PORT) & _BV(LCD_DB1_PIN))==0)?0:1)
 #define lcd_db2_pin_get() (((PIN(LCD_DB2_PORT) & _BV(LCD_DB2_PIN))==0)?0:1)
 #define lcd_db3_pin_get() (((PIN(LCD_DB3_PORT) & _BV(LCD_DB3_PIN))==0)?0:1)
 #define lcd_db4_pin_get() (((PIN(LCD_DB4_PORT) & _BV(LCD_DB4_PIN))==0)?0:1)
 #define lcd_db5_pin_get() (((PIN(LCD_DB5_PORT) & _BV(LCD_DB5_PIN))==0)?0:1)
 #define lcd_db6_pin_get() (((PIN(LCD_DB6_PORT) & _BV(LCD_DB6_PIN))==0)?0:1)
 #define lcd_db7_pin_get() (((PIN(LCD_DB7_PORT) & _BV(LCD_DB7_PIN))==0)?0:1)
 //DDR defines
 #define lcd_rs_ddr_low() DDR(LCD_RS_PORT)&=~_BV(LCD_RS_PIN)
 #if RW_LINE_IMPLEMENTED==1
 #define lcd_rw_ddr_low() DDR(LCD_RW_PORT)&=~_BV(LCD_RW_PIN)
 #endif
 #define lcd_db0_ddr_low() DDR(LCD_DB0_PORT)&=~_BV(LCD_DB0_PIN)
 #define lcd_db1_ddr_low() DDR(LCD_DB1_PORT)&=~_BV(LCD_DB1_PIN)
 #define lcd_db2_ddr_low() DDR(LCD_DB2_PORT)&=~_BV(LCD_DB2_PIN)
 #define lcd_db3_ddr_low() DDR(LCD_DB3_PORT)&=~_BV(LCD_DB3_PIN)
 #define lcd_db4_ddr_low() DDR(LCD_DB4_PORT)&=~_BV(LCD_DB4_PIN)
 #define lcd_db5_ddr_low() DDR(LCD_DB5_PORT)&=~_BV(LCD_DB5_PIN)
 #define lcd_db6_ddr_low() DDR(LCD_DB6_PORT)&=~_BV(LCD_DB6_PIN)
 #define lcd_db7_ddr_low() DDR(LCD_DB7_PORT)&=~_BV(LCD_DB7_PIN)
 #define lcd_rs_ddr_high() DDR(LCD_RS_PORT)|=_BV(LCD_RS_PIN)
 #if RW_LINE_IMPLEMENTED==1
 #define lcd_rw_ddr_high() DDR(LCD_RW_PORT)|=_BV(LCD_RW_PIN)
 #endif
 #define lcd_db0_ddr_high() DDR(LCD_DB0_PORT)|=_BV(LCD_DB0_PIN)
 #define lcd_db1_ddr_high() DDR(LCD_DB1_PORT)|=_BV(LCD_DB1_PIN)
 #define lcd_db2_ddr_high() DDR(LCD_DB2_PORT)|=_BV(LCD_DB2_PIN)
 #define lcd_db3_ddr_high() DDR(LCD_DB3_PORT)|=_BV(LCD_DB3_PIN)
 #define lcd_db4_ddr_high() DDR(LCD_DB4_PORT)|=_BV(LCD_DB4_PIN)
 #define lcd_db5_ddr_high() DDR(LCD_DB5_PORT)|=_BV(LCD_DB5_PIN)
 #define lcd_db6_ddr_high() DDR(LCD_DB6_PORT)|=_BV(LCD_DB6_PIN)
 #define lcd_db7_ddr_high() DDR(LCD_DB7_PORT)|=_BV(LCD_DB7_PIN)
 #define lcd_rs_ddr_set(value) if (value) lcd_rs_ddr_high(); else lcd_rs_ddr_low();
 #if RW_LINE_IMPLEMENTED==1
 #define lcd_rw_ddr_set(value) if (value) lcd_rw_ddr_high(); else lcd_rw_ddr_low();
 #endif
 #define lcd_db0_ddr_set(value) if (value) lcd_db0_ddr_high(); else lcd_db0_ddr_low();
 #define lcd_db1_ddr_set(value) if (value) lcd_db1_ddr_high(); else lcd_db1_ddr_low();
 #define lcd_db2_ddr_set(value) if (value) lcd_db2_ddr_high(); else lcd_db2_ddr_low();
 #define lcd_db3_ddr_set(value) if (value) lcd_db3_ddr_high(); else lcd_db3_ddr_low();
 #define lcd_db4_ddr_set(value) if (value) lcd_db4_ddr_high(); else lcd_db4_ddr_low();
 #define lcd_db5_ddr_set(value) if (value) lcd_db5_ddr_high(); else lcd_db5_ddr_low();
 #define lcd_db6_ddr_set(value) if (value) lcd_db6_ddr_high(); else lcd_db6_ddr_low();
 #define lcd_db7_ddr_set(value) if (value) lcd_db7_ddr_high(); else lcd_db7_ddr_low();
 #if (WAIT_MODE==1 && RW_LINE_IMPLEMENTED==1)
 static unsigned char PrevCmdInvolvedAddressCounter = 0;
 #endif
 #if (LCD_DISPLAYS>1)
 static unsigned char ActiveDisplay = 1;
 #endif
 static inline void lcd_e_port_low()
 {
 #if (LCD_DISPLAYS>1)
    switch (ActiveDisplay) {
    case 2 :
        LCD_E2_PORT &= ~_BV(LCD_E2_PIN);
        break;
 #if (LCD_DISPLAYS>=3)
    case 3 :
        LCD_E3_PORT &= ~_BV(LCD_E3_PIN);
        break;
 #endif
 #if (LCD_DISPLAYS==4)
    case 4 :
        LCD_E4_PORT &= ~_BV(LCD_E4_PIN);
        break;
 #endif
    default :
 #endif
        LCD_E_PORT &= ~_BV(LCD_E_PIN);
 #if (LCD_DISPLAYS>1)
    }
 #endif
 }
 static inline void lcd_e_port_high()
 {
 #if (LCD_DISPLAYS>1)
    switch (ActiveDisplay) {
    case 2 :
        LCD_E2_PORT |= _BV(LCD_E2_PIN);
        break;
 #if (LCD_DISPLAYS>=3)
    case 3 :
        LCD_E3_PORT |= _BV(LCD_E3_PIN);
        break;
 #endif
 #if (LCD_DISPLAYS==4)
    case 4 :
        LCD_E4_PORT |= _BV(LCD_E4_PIN);
        break;
 #endif
    default :
 #endif
        LCD_E_PORT |= _BV(LCD_E_PIN);
 #if (LCD_DISPLAYS>1)
    }
 #endif
 }
 static inline void lcd_e_ddr_low()
 {
 #if (LCD_DISPLAYS>1)
    switch (ActiveDisplay) {
    case 2 :
        DDR(LCD_E2_PORT) &= ~_BV(LCD_E2_PIN);
        break;
 #if (LCD_DISPLAYS>=3)
    case 3 :
        DDR(LCD_E3_PORT) &= ~_BV(LCD_E3_PIN);
        break;
 #endif
 #if (LCD_DISPLAYS==4)
    case 4 :
        DDR(LCD_E4_PORT) &= ~_BV(LCD_E4_PIN);
        break;
 #endif
    default :
 #endif
        DDR(LCD_E_PORT) &= ~_BV(LCD_E_PIN);
 #if (LCD_DISPLAYS>1)
    }
 #endif
 }
 static inline void lcd_e_ddr_high()
 {
 #if (LCD_DISPLAYS>1)
    switch (ActiveDisplay) {
    case 2 :
        DDR(LCD_E2_PORT) |= _BV(LCD_E2_PIN);
        break;
 #if (LCD_DISPLAYS>=3)
    case 3 :
        DDR(LCD_E3_PORT) |= _BV(LCD_E3_PIN);
        break;
 #endif
 #if (LCD_DISPLAYS==4)
    case 4 :
        DDR(LCD_E4_PORT) |= _BV(LCD_E4_PIN);
        break;
 #endif
    default :
 #endif
        DDR(LCD_E_PORT) |= _BV(LCD_E_PIN);
 #if (LCD_DISPLAYS>1)
    }
 #endif
 }
 /*************************************************************************
 loops while lcd is busy, returns address counter
 *************************************************************************/
 #if (WAIT_MODE==1 && RW_LINE_IMPLEMENTED==1)
 static uint8_t lcd_read(uint8_t rs);
 static void lcd_waitbusy(void)
 {
    register uint8_t c;
    unsigned int ul1 = 0;
    while ( ((c = lcd_read(0)) & (1 << LCD_BUSY)) &&
            ul1 < ((F_CPU / 16384 >= 16) ? F_CPU / 16384 :
                   16)) { // Wait Until Busy Flag is Cleared
        ul1++;
    }
 }
 #endif
 /*************************************************************************
 Low-level function to read byte from LCD controller
 Input:    rs     1: read data
                 0: read busy flag / address counter
 Returns:  byte read from LCD controller
 *************************************************************************/
 #if RW_LINE_IMPLEMENTED==1
 static uint8_t lcd_read(uint8_t rs)
 {
    uint8_t data;
 #if (WAIT_MODE==1 && RW_LINE_IMPLEMENTED==1)
    if (rs) {
        lcd_waitbusy();
    }
    if (PrevCmdInvolvedAddressCounter) {
        Delay_us(5);
        PrevCmdInvolvedAddressCounter = 0;
    }
 #endif
    if (rs) {
        lcd_rs_port_high();                             // RS=1: Read Data
 #if (WAIT_MODE==1 && RW_LINE_IMPLEMENTED==1)
        PrevCmdInvolvedAddressCounter = 1;
 #endif
    } else {
        lcd_rs_port_low();    // RS=0: Read Busy Flag
    }
    lcd_rw_port_high();                               // RW=1: Read Mode
 #if LCD_BITS==4
    lcd_db7_ddr_low();                              // Configure Data Pins as Input
    lcd_db6_ddr_low();
    lcd_db5_ddr_low();
    lcd_db4_ddr_low();
    lcd_e_port_high();                              // Read High Nibble First
    Delay_ns(500);
    data = lcd_db4_pin_get() << 4 | lcd_db5_pin_get() << 5 |
           lcd_db6_pin_get() << 6 | lcd_db7_pin_get() << 7;
    lcd_e_port_low();
    Delay_ns(500);
    lcd_e_port_high();                              // Read Low Nibble
    Delay_ns(500);
    data |= lcd_db4_pin_get() << 0 | lcd_db5_pin_get() << 1 |
            lcd_db6_pin_get() << 2 | lcd_db7_pin_get() << 3;
    lcd_e_port_low();
    lcd_db7_ddr_high();                             // Configure Data Pins as Output
    lcd_db6_ddr_high();
    lcd_db5_ddr_high();
    lcd_db4_ddr_high();
    lcd_db7_port_high();                            // Pins High (Inactive)
    lcd_db6_port_high();
    lcd_db5_port_high();
    lcd_db4_port_high();
 #else //using 8-Bit-Mode
    lcd_db7_ddr_low();                              // Configure Data Pins as Input
    lcd_db6_ddr_low();
    lcd_db5_ddr_low();
    lcd_db4_ddr_low();
    lcd_db3_ddr_low();
    lcd_db2_ddr_low();
    lcd_db1_ddr_low();
    lcd_db0_ddr_low();
    lcd_e_port_high();
    Delay_ns(500);
    data = lcd_db7_pin_get() << 7 | lcd_db6_pin_get() << 6 |
           lcd_db5_pin_get() << 5 | lcd_db4_pin_get() << 4 |
           lcd_db3_pin_get() << 3 | lcd_db2_pin_get() << 2 |
           lcd_db1_pin_get() << 1 | lcd_db0_pin_get();
    lcd_e_port_low();
    lcd_db7_ddr_high();                             // Configure Data Pins as Output
    lcd_db6_ddr_high();
    lcd_db5_ddr_high();
    lcd_db4_ddr_high();
    lcd_db3_ddr_high();
    lcd_db2_ddr_high();
    lcd_db1_ddr_high();
    lcd_db0_ddr_high();
    lcd_db7_port_high();                            // Pins High (Inactive)
    lcd_db6_port_high();
    lcd_db5_port_high();
    lcd_db4_port_high();
    lcd_db3_port_high();
    lcd_db2_port_high();
    lcd_db1_port_high();
    lcd_db0_port_high();
 #endif
    lcd_rw_port_low();
 #if (WAIT_MODE==0 || RW_LINE_IMPLEMENTED==0)
    if (rs) {
        Delay_us(40);
    } else {
        Delay_us(1);
    }
 #endif
    return data;
 }
 uint8_t lcd_getc()
 {
    return lcd_read(1);
 }
 #endif
 /*************************************************************************
 Low-level function to write byte to LCD controller
 Input:    data   byte to write to LCD
          rs     1: write data
                 0: write instruction
 Returns:  none
 *************************************************************************/
 static void lcd_write(uint8_t data, uint8_t rs)
 {
 #if (WAIT_MODE==1 && RW_LINE_IMPLEMENTED==1)
    lcd_waitbusy();
    if (PrevCmdInvolvedAddressCounter) {
        Delay_us(5);
        PrevCmdInvolvedAddressCounter = 0;
    }
 #endif
    if (rs) {
        lcd_rs_port_high();                            // RS=1: Write Character
 #if (WAIT_MODE==1 && RW_LINE_IMPLEMENTED==1)
        PrevCmdInvolvedAddressCounter = 1;
 #endif
    } else {
        lcd_rs_port_low();                          // RS=0: Write Command
 #if (WAIT_MODE==1 && RW_LINE_IMPLEMENTED==1)
        PrevCmdInvolvedAddressCounter = 0;
 #endif
    }
 #if LCD_BITS==4
    lcd_db7_port_set(data & _BV(7));                //Output High Nibble
    lcd_db6_port_set(data & _BV(6));
    lcd_db5_port_set(data & _BV(5));
    lcd_db4_port_set(data & _BV(4));
    Delay_ns(100);
    lcd_e_port_high();
    Delay_ns(500);
    lcd_e_port_low();
    lcd_db7_port_set(data & _BV(3));                //Output High Nibble
    lcd_db6_port_set(data & _BV(2));
    lcd_db5_port_set(data & _BV(1));
    lcd_db4_port_set(data & _BV(0));
    Delay_ns(100);
    lcd_e_port_high();
    Delay_ns(500);
    lcd_e_port_low();
    lcd_db7_port_high();                            // All Data Pins High (Inactive)
    lcd_db6_port_high();
    lcd_db5_port_high();
    lcd_db4_port_high();
 #else //using 8-Bit_Mode
    lcd_db7_port_set(data & _BV(7));                //Output High Nibble
    lcd_db6_port_set(data & _BV(6));
    lcd_db5_port_set(data & _BV(5));
    lcd_db4_port_set(data & _BV(4));
    lcd_db3_port_set(data & _BV(3));                //Output High Nibble
    lcd_db2_port_set(data & _BV(2));
    lcd_db1_port_set(data & _BV(1));
    lcd_db0_port_set(data & _BV(0));
    Delay_ns(100);
    lcd_e_port_high();
    Delay_ns(500);
    lcd_e_port_low();
    lcd_db7_port_high();                            // All Data Pins High (Inactive)
    lcd_db6_port_high();
    lcd_db5_port_high();
    lcd_db4_port_high();
    lcd_db3_port_high();
    lcd_db2_port_high();
    lcd_db1_port_high();
    lcd_db0_port_high();
 #endif
 #if (WAIT_MODE==0 || RW_LINE_IMPLEMENTED==0)
    if (!rs &&
            data <= ((1 << LCD_CLR) | (1 << LCD_HOME))) { // Is command clrscr or home?
        Delay_us(1640);
    } else {
        Delay_us(40);
    }
 #endif
 }
 /*************************************************************************
 Send LCD controller instruction command
 Input:   instruction to send to LCD controller, see HD44780 data sheet
 Returns: none
 *************************************************************************/
 void lcd_command(uint8_t cmd)
 {
    lcd_write(cmd, 0);
 }
 /*************************************************************************
 Set cursor to specified position
 Input:    pos position
 Returns:  none
 *************************************************************************/
 void lcd_goto(uint8_t pos)
 {
    //Do not go outside of screen limits
    assert(pos < LCD_COLS_MAX);
    lcd_command((1 << LCD_DDRAM) + pos);
 }
 /*************************************************************************
 Clear screen
 Input:    none
 Returns:  none
 *************************************************************************/
 void lcd_clrscr()
 {
    lcd_command(1 << LCD_CLR);
 }
 /*************************************************************************
 Return home
 Input:    none
 Returns:  none
 *************************************************************************/
 void lcd_home()
 {
    lcd_command(1 << LCD_HOME);
 }
 /*************************************************************************
 Display character
 Input:    character to be displayed
 Returns:  none
 *************************************************************************/
 void lcd_putc(char c)
 {
    lcd_write(c, 1);
 }
 /*************************************************************************
 Display string
 Input:    string to be displayed
 Returns:  none
 *************************************************************************/
 void lcd_puts(const char *s)
 {
    register char c;
    while ((c = *s++)) {
        lcd_putc(c);
    }
 }
 /*************************************************************************
 Display string from flash
 Input:    string to be displayed
 Returns:  none
 *************************************************************************/
 void lcd_puts_P(const char *progmem_s)
 {
    register char c;
    while ((c = pgm_read_byte(progmem_s++))) {
        lcd_putc(c);
    }
 }
 /*************************************************************************
 Initialize display
 Input:    none
 Returns:  none
 *************************************************************************/
 void lcd_init()
 {
    //Set All Pins as Output
    lcd_e_ddr_high();
    lcd_rs_ddr_high();
 #if RW_LINE_IMPLEMENTED==1
    lcd_rw_ddr_high();
 #endif
    lcd_db7_ddr_high();
    lcd_db6_ddr_high();
    lcd_db5_ddr_high();
    lcd_db4_ddr_high();
 #if LCD_BITS==8
    lcd_db3_ddr_high();
    lcd_db2_ddr_high();
    lcd_db1_ddr_high();
    lcd_db0_ddr_high();
 #endif
    //Set All Control Lines Low
    lcd_e_port_low();
    lcd_rs_port_low();
 #if RW_LINE_IMPLEMENTED==1
    lcd_rw_port_low();
 #endif
    //Set All Data Lines High
    lcd_db7_port_high();
    lcd_db6_port_high();
    lcd_db5_port_high();
    lcd_db4_port_high();
 #if LCD_BITS==8
    lcd_db3_port_high();
    lcd_db2_port_high();
    lcd_db1_port_high();
    lcd_db0_port_high();
 #endif
    //Startup Delay
    Delay_ms(DELAY_RESET);
    //Initialize Display
    lcd_db7_port_low();
    lcd_db6_port_low();
    Delay_ns(100);
    lcd_e_port_high();
    Delay_ns(500);
    lcd_e_port_low();
    Delay_us(4100);
    lcd_e_port_high();
    Delay_ns(500);
    lcd_e_port_low();
    Delay_us(100);
    lcd_e_port_high();
    Delay_ns(500);
    lcd_e_port_low();
    Delay_us(40);
    //Init differs between 4-bit and 8-bit from here
 #if (LCD_BITS==4)
    lcd_db4_port_low();
    Delay_ns(100);
    lcd_e_port_high();
    Delay_ns(500);
    lcd_e_port_low();
    Delay_us(40);
    lcd_db4_port_low();
    Delay_ns(100);
    lcd_e_port_high();
    Delay_ns(500);
    lcd_e_port_low();
    Delay_ns(500);
 #if (LCD_DISPLAYS==1)
    if (LCD_DISPLAY_LINES > 1) {
        lcd_db7_port_high();
    }
 #else
    unsigned char c;
    switch (ActiveDisplay) {
    case 1 :
        c = LCD_DISPLAY_LINES;
        break;
    case 2 :
        c = LCD_DISPLAY2_LINES;
        break;
 #if (LCD_DISPLAYS>=3)
    case 3 :
        c = LCD_DISPLAY3_LINES;
        break;
 #endif
 #if (LCD_DISPLAYS==4)
    case 4 :
        c = LCD_DISPLAY4_LINES;
        break;
 #endif
    }
    if (c > 1) {
        lcd_db7_port_high();
    }
 #endif
    Delay_ns(100);
    lcd_e_port_high();
    Delay_ns(500);
    lcd_e_port_low();
    Delay_us(40);
 #else
 #if (LCD_DISPLAYS==1)
    if (LCD_DISPLAY_LINES < 2) {
        lcd_db3_port_low();
    }
 #else
    unsigned char c;
    switch (ActiveDisplay) {
    case 1 :
        c = LCD_DISPLAY_LINES;
        break;
    case 2 :
        c = LCD_DISPLAY2_LINES;
        break;
 #if (LCD_DISPLAYS>=3)
    case 3 :
        c = LCD_DISPLAY3_LINES;
        break;
 #endif
 #if (LCD_DISPLAYS==4)
    case 4 :
        c = LCD_DISPLAY4_LINES;
        break;
 #endif
    }
    if (c < 2) {
        lcd_db3_port_low();
    }
 #endif
    lcd_db2_port_low();
    Delay_ns(100);
    lcd_e_port_high();
    Delay_ns(500);
    lcd_e_port_low();
    Delay_us(40);
 #endif
    //Display Off
    lcd_command(_BV(LCD_DISPLAYMODE));
    //Display Clear
    lcd_clrscr();
    //Entry Mode Set
    lcd_command(_BV(LCD_ENTRY_MODE) | _BV(LCD_ENTRY_INC));
    //Display On
    lcd_command(_BV(LCD_DISPLAYMODE) | _BV(LCD_DISPLAYMODE_ON));
 }
 #if (LCD_DISPLAYS>1)
 void lcd_use_display(int ADisplay)
 {
    if (ADisplay >= 1 && ADisplay <= LCD_DISPLAYS) {
        ActiveDisplay = ADisplay;
    }
 }
 #endif
 /*************************************************************************
 Clear characters at position until length
 Input:    start position and lentgh
 Returns:  none
 *************************************************************************/
 void lcd_clr(uint8_t pos, uint8_t len)
 {
    for (int i = 0; i < len; i++) {
        lcd_goto(pos + i);
        lcd_putc(' ');
    }
 }
--- a/lib/hd44780_111/hd44780.h
+++ b/lib/hd44780_111/hd44780.h
@ -0,0 +1,75 @@
 /*****************************************************************************
 Title  :   HD44780 Library
 Author :   SA Development
 Version:   1.11
 Modifications for: Arduino Mega 2560
                    Itead Studio Arduino 1602 LED Keypad Shield
 Modified by: Silver Kits <silver.kits@eesti.ee> October 2016
 *****************************************************************************/
 #ifndef HD44780_H
 #define HD44780_H
 //LCD Commands for HD44780
 #define LCD_CLR                 0    // DB0: clear display
 #define LCD_HOME                1    // DB1: return to home position
 #define LCD_ENTRY_MODE          2    // DB2: set entry mode
 #define LCD_ENTRY_INC           1    // DB1: 1=increment, 0=decrement
 #define LCD_ENTRY_SHIFT         0    // DB0: 1=display shift on
 #define LCD_DISPLAYMODE         3    // DB3: turn lcd/cursor on
 #define LCD_DISPLAYMODE_ON      2    // DB2: turn display on
 #define LCD_DISPLAYMODE_CURSOR  1    // DB1: turn cursor on
 #define LCD_DISPLAYMODE_BLINK   0    // DB0: blinking cursor
 #define LCD_MOVE                4    // DB4: move cursor/display
 #define LCD_MOVE_DISP           3    // DB3: move display (0-> cursor)
 #define LCD_MOVE_RIGHT          2    // DB2: move right (0-> left)
 #define LCD_FUNCTION            5    // DB5: function set
 #define LCD_FUNCTION_8BIT       4    // DB4: set 8BIT mode (0->4BIT mode)
 #define LCD_FUNCTION_2LINES     3    // DB3: two lines (0->one line)
 #define LCD_FUNCTION_10DOTS     2    // DB2: 5x10 font (0->5x7 font)
 #define LCD_CGRAM               6    // DB6: set CG RAM address
 #define LCD_DDRAM               7    // DB7: set DD RAM address
 #define LCD_BUSY                7    // DB7: LCD is busy
 // LCD columns and rows definitions
 #define LCD_ROW_1_START             0
 #define LCD_ROW_2_START             64
 #define LCD_ROW_1_LAST_VISIBLE_COL  15
 #define LCD_ROW_1_LAST_COL          39
 #define LCD_ROW_2_LAST_VISIBLE_COL  79
 #define LCD_ROW_2_LAST_COL          103
 #define LCD_COLS_MAX                103
 #define LCD_VISIBLE_COLS            16
 // Maximum character what can be displayed with 1 byte
 #define LCD_MAX_CARACTER            255
 void lcd_init();
 void lcd_command(uint8_t cmd);
 void lcd_clrscr();
 void lcd_clr(uint8_t pos, uint8_t len);
 void lcd_home();
 void lcd_goto(uint8_t pos);
 #if RW_LINE_IMPLEMENTED==1
 uint8_t lcd_getc();
 #endif
 void lcd_putc(char c);
 void lcd_puts(const char *s);
 void lcd_puts_P(const char *progmem_s);
 #if (LCD_DISPLAYS>1)
 void lcd_use_display(int ADisplay);
 #endif
 #endif
--- a/lib/hd44780_111/hd44780.txt
+++ b/lib/hd44780_111/hd44780.txt
@ -0,0 +1,155 @@
 Title  :   HD44780 Library
 Author :   SA Development
 Version:   1.11
 Parts of this code have been created or modified by Peter Fleury, Martin Thomas, and Andreas Heinzen as well.  I went through it line by line and modified or improved it as necessary.  This library has been cut down to only what was necessary to communicate with the LCD and does not include scrolling or wrapping features.  See the libraries for the mentioned authors to get those features if you need them.
 INSTALLATION:
 -------------
 Three files are provided:
 hd44780.c - Main code file, you must add this to your project under "Source Files".
 hd44780.h - Main include file, you must include this in any files you wish to use the library.
 hd44780_settings_example.h - This is an example of the hd44780_settings.h file that the library requires (and will try to include).  The settings that are intended to be customized for each project are located in this file.
 The advantage to this is that the main C/H files are unmodified and can be updated to a new version without losing custom per project settings.  Another advantage is that since they are unmodified, you can put them in a shared or library directory and use them in multiple separate projects.  Then you only have one place to update them instead of multiple project directories.
 Two ways you can implement this:
 Non-shared method:
 1.  Copy these files into your project directory.
 2.  Rename "hd44780_settings_example.h" to "hd44780_settings.h".
 3.  Set the values appropriate to your project in "hd44780_settings.h".
 4.  Add the hd44780.c to your project.
 5.  Put "#include "hd44780.h" in any of your C files that need to use the functions.
 Shared method:
 1.  Create a shared directory.
 2.  Copy these files into this directory.
 To use it with a project:
 1.  Copy "hd44780_settings_example.h" to your project directory as "hd44780_settings.h".  NOTE THE "_example" was dropped from the filename.
 2.  Set the values appropriate to your project in "hd44780_settings.h".
 3.  Add the hd44780.c to your project.
 4.  Put "#include "..\shared\hd44780.h" in any of your C files that need to use the functions.  You may have to modify this to point to your shared directory.
 5.  Project -> Configuration Options -> Include Directories -> New -> Add your project directory.  It should put a ".\" in the list.  This step is necessary because when the library tries to include "hd44780_settings.h", it will look in your project directory and grab the one customized for that particular project.  This is why it is important NOT to have a hd44780_settings.h in your shared directory and why I have this file named hd44780_settings_example.h instead.  You can leave the example file in the shared directory as a file to copy and rename when starting a new project.
 This library will work with my Advanced Delay Library as well by changing the USE_ADELAY_LIBRARY value from 0 to 1.  By default it will use the __builtin_avr_delay_cycles function.  My only gripe about this built in function is that if you are debugging at the assembly level it does not match C code lines to the assembly lines properly.  Other than this it is exceptional.  My Advanced Delay Library accomplishes the same thing while also adding additional delay functions that can expect a variable instead of a constant to be supplied and they don't suffer the C to assembly alignment bug that the built in ones do.
 HOW TO USE:
 -----------
 Supports LCD communications on as few as 6 pins or as many as 11 pins depending on configuration.
 The first choice you must make is whether you want to use 4 bit or 8 bit mode.  Honestly this isn't a hard choice as I've tested both on my scope to see how the performance differed and both were very close to the same under all clock speeds I tested (16khz to 16mhz).  I don't see the point in wasting 4 uC pins for 8 bit mode as it seems to have no advantage.  Use the LCD_BITS parameter to set this:
 LCD_BITS=4     // 4 for 4 Bit I/O Mode 
 LCD_BITS=8     // 8 for 8 Bit I/O Mode
 The next choice is whether to implement a RW signal or not.  If you don't need to read anything back from the LCD, then you can skip implementing it and simply connect the RW signal to ground.  This is nice because it doesn't take up a uC pin this way.  If however, you need to read something back from the LCD, you will need to implement RW.  Use the RW_LINE_IMPLEMENTED parameter to set this:
 RW_LINE_IMPLEMENTED=0     //0 for no RW line (RW on LCD tied to ground)
 RW_LINE_IMPLEMENTED=1     //1 for RW line present
 The last big decision is which WAIT_MODE to use.  You can select between Delay Mode or Check Busy Mode.  Delay Mode will delay after each LCD command to make sure that there is time for the LCD to execute the command before the next one can be issued.  Check Busy Mode will read the check busy flag from the LCD to see if the LCD is still busy or ready for the next command.  Check Busy Mode requires the RW line to be implemented, however you can implement an RW line (RW_LINE_IMPLEMENTED=1) and use Delay Mode (WAIT_MODE=0).  You might think that the Check Busy Mode technique would be faster, but it is actually slower when running a clock below 10Mhz.  This is because the extra code is takes to check it takes up more time that the Delay Mode would have.  At 10Mhz or above, Check Busy Mode will be faster.  At 16Mhz, it was 20% faster than Delay Mode, but at 8Mhz Delay Mode was 10% faster.  Use the WAIT_MODE parameter to set this:
 WAIT_MODE=0     // 0=Use Delay Method (Faster if running <10Mhz)
 WAIT_MODE=1     // 1=Use Check Busy Flag (Faster if running >10Mhz) ***Requires RW Line***
 This version implements multiple LCD display support for up to 4 devices.  All devices will share their data/RS/RW(if implemented) pins.  Each device will have its own E(enable) pin.  You can use the command lcd_use_display(x) to choose which display commands will execute on.  You will need to lcd_init() each one individually.  This not only allows you to run 4 independent LCD display, but some displays like the 40 character x 4 line display are actually implemented with 2 lcd controllers.  They will have an E and E2 pin so you will need this multiple display functionallity to use a display like this.
 To init the display, clear the screen, and output "Hello World...":
  lcd_init();
  lcd_clrscr();
  lcd_puts("Hello World...");
 To put a character:
  lcd_putc('A');
 To turn off the display:
  lcd_command(_BV(LCD_DISPLAYMODE));
 To turn on the display:
  lcd_command(_BV(LCD_DISPLAYMODE) | _BV(LCD_DISPLAYMODE_ON));
 To turn on the display AND display an underline cursor:
  lcd_command(_BV(LCD_DISPLAYMODE) | _BV(LCD_DISPLAYMODE_ON) | _BV(LCD_DISPLAYMODE_CURSOR));
 To turn on the display AND display a blinking cursor:
  lcd_command(_BV(LCD_DISPLAYMODE) | _BV(LCD_DISPLAYMODE_ON) | _BV(LCD_DISPLAYMODE_BLINK));
 To move the cursor to the left:
  lcd_command(_BV(LCD_MOVE));
 To move the cursor to the right:
  lcd_command(_BV(LCD_MOVE) | _BV(LCD_MOVE_RIGHT));
 To move the cursor to a specific location:
  lcd_goto(0x40); //0x40 is often the beginning of the second line
                  //each LCD display will have its memory mapped
                  //differently
 To create a custom character:
  lcd_command(_BV(LCD_CGRAM)+0*8);    //The 0 on this line may be 0-7
  lcd_putc(0b00000); //5x8 bitmap of character, in this example a backslash
  lcd_putc(0b10000);
  lcd_putc(0b01000);
  lcd_putc(0b00100);
  lcd_putc(0b00010);
  lcd_putc(0b00001);
  lcd_putc(0b00000);
  lcd_putc(0b00000);
  lcd_goto(0);       //DO NOT FORGET to issue a GOTO command to go back to writing to the LCD
                     //ddram OR you will spend hours like me thinking the LCD is locked up 
                     //when it working just fine and you are outputting to cgram instead of 
                     //ddram!
 To display this custom character:
  lcd_putc(0);                        //Displays custom character 0
 To shift the display so that the characters on screen are pushed to the left:
  lcd_command(_BV(LCD_MOVE) | _BV(LCD_MOVE_DISP));
 To shift the display so that the characters on screen are pushed to the left:
  lcd_command(_BV(LCD_MOVE) | _BV(LCD_MOVE_DISP) | _BV(LCD_MOVE_RIGHT));     
 VERSION HISTORY:
 ----------------
 1.00 - Initial version.
 1.02 - Delay_ns, Delay_us, and Delay_ms added via a new included file "delay.h". All of these functions support values from 1-65535 so you can delay 65.535 seconds using Delay_ms, or Delay_ns(1) to delay 1ns. Realize that a delay of 1ns would only be possible if you were running at 1ghz, but asking for 1ns delay will get you a single clock delay. At 8mhz this is 125ns. The delays will get you "at least" what you ask for with as little more as possible.  The reason the delay functions were added is because the LCD library I based this on "assumed" that 2 clocks were enough for a 500ns wait. This is TRUE if you are running at less than 2mhz, but not true if you are running faster. I modified these functions to use the new Delay_ns function above so it will ALWAYS wait 500ns on the enable line now.
 1.03 - No longer includes my delay functions, but instead uses the internal builtin_avr_delay_cycles instead.  You can still use it with my Advanced Delay Library, check the C file for info.  This version also adds a clrscr in the init function. I was experiencing issues where a reset would corrupt part of the screen so this was necessary to make sure it starts clear.
 1.05 - Reorganized all code to follow the standard C and H file techniques.
 1.10 - Multiple LCD display support (Up to 4) added.
       Bugs in the read command and 8 bit modes fixed and tested.
       You are now able to put any pins on any pin and port.  The data pins are no longer required to be on 0-3 or 0-7.  This gives you full freedom to put these pins anywhere.
       All pin changes are now done through SBI CBI instructions meaning there will be zero problems with interrupts of other things occuring on pins of the same port as the LCD pins.
       Checkbusy used to end up in an infinite loop if the LCD didn't response with "not busy".  I have put a 3ms maximum time on it (or 16 attempts minimum).  Since all LCD commands should run with 1.64ms, this should be more than enough and will allow the processor to continue on instead of being permanently stuck.  The delay however at 3ms everytime a call is made to the LCD will probably slow things down too much anyway, but I figured having this limit was better than nothing.
 1.11 - A big issue in the LCD init code has been corrected which will now allow 4-bit mode to work properly below 2mhz.  I've tested both 4-bit and 8-bit modes from 16khz to 16mhz with no issues.
       Many commands have been marked as static if you don't need to access them, the only change is that lcd_read(x) is no longer available.  You must use lcd_getc() instead.
       RW_LINE_IMPLEMENTED has been added which allows you to indicate whether you are implementing the RW line or not.  This used to be part of the WAIT_MODE, but having this option now allows you to implement the RW line so you can read from the LCD, but still use WAIT_MODE=0 for delays instead of using the check busy flag.
       Check Busy has had an additional 6us delay added to it when the previous command involved a read or write that changes the address pointer.  This is due to the check busy flag going low before this pointer is updated and is to ensure the LCD is ready for another command.
--- a/lib/hd44780_111/hd44780_settings.h
+++ b/lib/hd44780_111/hd44780_settings.h
@ -0,0 +1,38 @@
 /*****************************************************************************
 Title  :   HD44780 Library
 Author :   SA Development
 Version:   1.11
 Modifications for: Arduino Mega 2560
                    Itead Studio Arduino 1602 LED Keypad Shield
 Modified by: Silver Kits <silver.kits@eesti.ee> October 2016
 *****************************************************************************/
 #ifndef HD44780_SETTINGS_H
 #define HD44780_SETTINGS_H
 #define USE_ADELAY_LIBRARY       0
 #define LCD_BITS                 4
 #define RW_LINE_IMPLEMENTED      0
 #define WAIT_MODE                0
 #define DELAY_RESET              15
 // Pin and port definitions for Arduino Mega 2560
 #define LCD_DB4_PORT             PORTG
 #define LCD_DB4_PIN              5
 #define LCD_DB5_PORT             PORTE
 #define LCD_DB5_PIN              3
 #define LCD_DB6_PORT             PORTH
 #define LCD_DB6_PIN              3
 #define LCD_DB7_PORT             PORTH
 #define LCD_DB7_PIN              4
 #define LCD_RS_PORT              PORTH
 #define LCD_RS_PIN               5
 #define LCD_DISPLAYS             1
 #define LCD_DISPLAY_LINES        2
 #define LCD_E_PORT               PORTH
 #define LCD_E_PIN                6
 #endif /* HD44780_SETTINGS_H */
--- a/lib/hd44780_111/hd44780_settings_example.h
+++ b/lib/hd44780_111/hd44780_settings_example.h
@ -0,0 +1,66 @@
 #ifndef HD44780_SETTINGS_H
 #define HD44780_SETTINGS_H
 #define F_CPU                    8000000     // Set Clock Frequency
 #define USE_ADELAY_LIBRARY       0           // Set to 1 to use my ADELAY library, 0 to use internal delay functions
 #define LCD_BITS                 4           // 4 for 4 Bit I/O Mode, 8 for 8 Bit I/O Mode
 #define RW_LINE_IMPLEMENTED      0           // 0 for no RW line (RW on LCD tied to ground), 1 for RW line present
 #define WAIT_MODE                0           // 0=Use Delay Method (Faster if running <10Mhz)
                                             // 1=Use Check Busy Flag (Faster if running >10Mhz) ***Requires RW Line***
 #define DELAY_RESET              15          // in mS
 #if (LCD_BITS==8)                            // If using 8 bit mode, you must configure DB0-DB7
  #define LCD_DB0_PORT           PORTC
  #define LCD_DB0_PIN            0
  #define LCD_DB1_PORT           PORTC
  #define LCD_DB1_PIN            1
  #define LCD_DB2_PORT           PORTC
  #define LCD_DB2_PIN            2
  #define LCD_DB3_PORT           PORTC
  #define LCD_DB3_PIN            3
 #endif
 #define LCD_DB4_PORT             PORTC       // If using 4 bit omde, yo umust configure DB4-DB7
 #define LCD_DB4_PIN              4
 #define LCD_DB5_PORT             PORTC
 #define LCD_DB5_PIN              5
 #define LCD_DB6_PORT             PORTC
 #define LCD_DB6_PIN              6
 #define LCD_DB7_PORT             PORTC
 #define LCD_DB7_PIN              7
 #define LCD_RS_PORT              PORTC       // Port for RS line
 #define LCD_RS_PIN               4           // Pin for RS line
 #define LCD_RW_PORT              PORTC       // Port for RW line (ONLY used if RW_LINE_IMPLEMENTED=1)
 #define LCD_RW_PIN               6           // Pin for RW line (ONLY used if RW_LINE_IMPLEMENTED=1)
 #define LCD_DISPLAYS             1           // Up to 4 LCD displays can be used at one time
                                             // All pins are shared between displays except for the E
                                             // pin which each display will have its own
                                             // Display 1 Settings - if you only have 1 display, YOU MUST SET THESE
 #define LCD_DISPLAY_LINES        2           // Number of Lines, Only Used for Set I/O Mode Command
 #define LCD_E_PORT               PORTC       // Port for E line
 #define LCD_E_PIN                5           // Pin for E line
 #if (LCD_DISPLAYS>=2)                        // If you have 2 displays, set these and change LCD_DISPLAYS=2
  #define LCD_DISPLAY2_LINES     2           // Number of Lines, Only Used for Set I/O Mode Command
  #define LCD_E2_PORT            PORTC       // Port for E line
  #define LCD_E2_PIN             5           // Pin for E line
 #endif
 #if (LCD_DISPLAYS>=3)                        // If you have 3 displays, set these and change LCD_DISPLAYS=3
  #define LCD_DISPLAY3_LINES     2           // Number of Lines, Only Used for Set I/O Mode Command
  #define LCD_E3_PORT            PORTC       // Port for E line
  #define LCD_E3_PIN             5           // Pin for E line
 #endif
 #if (LCD_DISPLAYS>=4)                        // If you have 4 displays, set these and change LCD_DISPLAYS=4
  #define LCD_DISPLAY4_LINES     2           // Number of Lines, Only Used for Set I/O Mode Command
  #define LCD_E4_PORT            PORTC       // Port for E line
  #define LCD_E4_PIN             5           // Pin for E line
 #endif
 #endif
--- a/lib/helius_microrl/LICENSE
+++ b/lib/helius_microrl/LICENSE
@ -0,0 +1,165 @@
                   GNU LESSER GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007
 Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.
  This version of the GNU Lesser General Public License incorporates
 the terms and conditions of version 3 of the GNU General Public
 License, supplemented by the additional permissions listed below.
  0. Additional Definitions.
  As used herein, "this License" refers to version 3 of the GNU Lesser
 General Public License, and the "GNU GPL" refers to version 3 of the GNU
 General Public License.
  "The Library" refers to a covered work governed by this License,
 other than an Application or a Combined Work as defined below.
  An "Application" is any work that makes use of an interface provided
 by the Library, but which is not otherwise based on the Library.
 Defining a subclass of a class defined by the Library is deemed a mode
 of using an interface provided by the Library.
  A "Combined Work" is a work produced by combining or linking an
 Application with the Library.  The particular version of the Library
 with which the Combined Work was made is also called the "Linked
 Version".
  The "Minimal Corresponding Source" for a Combined Work means the
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--- a/lib/helius_microrl/README
+++ b/lib/helius_microrl/README
@ -0,0 +1,103 @@
 microrl - micro read line library for small and embedded devices with basic VT100 support.
 1. DESCRIPTION
 Microrl library is designed to help implement command line interface in small and embedded devices. Main goal is to write compact, small memory consuming but powerful interfaces, with support navigation through command line with cursor, HOME, END keys, hot key like Ctrl+U and other, history and completion feature.
 2. FEATURE
 	** config.h file
 	 - Turn on/off feature for add functional/decrease memory via config files.
 	** hot keys support
 	 - backspace, cursor arrow, HOME, END keys
 	 - Ctrl+U (cut line from cursor to begin) 
 	 - Ctrl+K (cut line from cursor to end) 
 	 - Ctrl+A (like HOME) 
 	 - Ctrl+E (like END)
 	 - Ctrl+H (like backspace)
 	 - Ctrl+B (like cursor arrow left) 
 	 - Ctrl+F (like cursor arrow right)
 	 - Ctrl+P (like cursor arrow up)
 	 - Ctrl+N (like cursor arrow down)
 	 - Ctrl+C (call 'sigint' callback, only for embedded system)
 	** history
 	 - Static ring buffer history for memory saving. Number of commands saved to history depends from commands length and buffer size (defined in config)
 	** completion
 	 - via completion callback
 3. SRC STRUCTURE
 src/             - library source
  microrl.c      - microrl routines
  microrl.h      - lib interface and data type
  config.h       - customisation config-file
 examples/        - library usage examples
  avr_misc/      - avr specific routines for avr example
  unix_misc/     - unix specific routines for desktop example
  example.c      - common part of example, for build  demonstrating example for various platform
  example_misc.h - interface to platform specific routines for example build (avr, unix)
  Makefile       - unix example build (gcc)
  Makefile.avr   - avr example build (avr-gcc)
 4. INSTALL
 Requirements: C compiler with support for C99 standard (GNU GCC, Keil, IAR) with standard C library (libc, uClibc or other compatible). Also you have to implement several routines in your own code for library to work. 
 NOTE: need add -std=gnu99 arg for gcc
 For embed lib to you project, you need to do few simple steps:
 a) Include microrl.h file to you project.
 b) Create 'microrl_t' object, and call 'microrl_init' func, with print callback pointer. Print callback pointer is pointer to function that call by library if it's need to put text to terminal. Text string always is null terminated.
 For example on linux PC print callback may be:
 	// print callback for microrl library
 	void print (char * str)
 	{
 		fprintf (stdout, "%s", str);
 	}
 c) Call 'microrl_set_execute_callback' with pointer to you routine, what will be called if user press enter in terminal. Execute callback give a 'argc', 'argv' parametrs, like 'main' func in application. All token in 'argv' is null terminated. So you can simply walk through argv and handle commands.
 d) If you want completion support if user press TAB key, call 'microrl_set_complete_callback' and set you callback. It also give 'argc' and 'argv' arguments, so iterate through it and return set of complete variants. 
 e) Look at 'config.h' file, for tune library for you requiring. 
 f) Now you just call 'microrl_insert_char' on each char received from input stream (usart, network, etc).
 Example of code:
 	//*****************************************************************************
 	int main (int argc, char ** argv)
 	{
 		// create microrl object and pointer on it
 		microrl_t rl;
 		microrl_t * prl = &rl;
 		// call init with ptr to microrl instance and print callback
 		microrl_init (prl, print);
 		// set callback for execute
 		microrl_set_execute_callback (prl, execute);
 		// set callback for completion (optionally)
 		microrl_set_complete_callback (prl, complet);
 		// set callback for ctrl+c handling (optionally)
 		microrl_set_sigint_callback (prl, sigint);
 		while (1) {
 			// put received char from stdin to microrl lib
 			char ch = get_char ();
 			microrl_insert_char (prl, ch);
 		}
 		return 0;
 	}
 See examples library usage.
 Author: Eugene Samoylov aka Helius (ghelius@gmail.com) 
 01.09.2011
--- a/lib/helius_microrl/config.h
+++ b/lib/helius_microrl/config.h
@ -0,0 +1,104 @@
 /*
 Microrl library config files
 Autor: Eugene Samoylov aka Helius (ghelius@gmail.com)
 */
 #ifndef _MICRORL_CONFIG_H_
 #define _MICRORL_CONFIG_H_
 #define MICRORL_LIB_VER "1.5.1"
 /*********** CONFIG SECTION **************/
 /*
 Command line length, define cmdline buffer size. Set max number of chars + 1,
 because last byte of buffer need to contain '\0' - NULL terminator, and 
 not use for storing inputed char.
 If user input chars more then it parametrs-1, chars not added to command line.*/
 #define _COMMAND_LINE_LEN (1+100)									// for 32 chars
 /*
 Command token number, define max token it command line, if number of token 
 typed in command line exceed this value, then prints message about it and
 command line not to be parced and 'execute' callback will not calls.
 Token is word separate by white space, for example 3 token line:
 "IRin> set mode test" */
 #define _COMMAND_TOKEN_NMB 8
 /*
 Define you prompt string here. You can use colors escape code, for highlight you prompt,
 for example this prompt will green color (if you terminal supports color)*/
 //#define _PROMPT_DEFAULT "\033[32mIRin >\033[0m "	// green color
 //#define _PROMPT_DEFAULT "IRin > "
 #define _PROMPT_DEFAULT ">"
 /*
 Define prompt text (without ESC sequence, only text) prompt length, it needs because if you use
 ESC sequence, it's not possible detect only text length*/
 #define _PROMPT_LEN       1
 /*Define it, if you wanna use completion functional, also set completion callback in you code,
 now if user press TAB calls 'copmlitetion' callback. If you no need it, you can just set 
 NULL to callback ptr and do not use it, but for memory saving tune, 
 if you are not going to use it - disable this define.*/
 //#define _USE_COMPLETE
 /*Define it, if you wanna use history. It s work's like bash history, and
 set stored value to cmdline, if UP and DOWN key pressed. Using history add
 memory consuming, depends from _RING_HISTORY_LEN parametr */
 //#define _USE_HISTORY
 /*
 History ring buffer length, define static buffer size.
 For saving memory, each entered cmdline store to history in ring buffer,
 so we can not say, how many line we can store, it depends from cmdline len,
 but memory using more effective. We not prefer dinamic memory allocation for
 small and embedded devices. Overhead is 2 char on each saved line*/
 //#define _RING_HISTORY_LEN 64
 /*
 Enable Handling terminal ESC sequence. If disabling, then cursor arrow, HOME, END will not work,
 use Ctrl+A(B,F,P,N,A,E,H,K,U,C) see README, but decrease code memory.*/
 //#define _USE_ESC_SEQ
 /*
 Use snprintf from you standard complier library, but it gives some overhead.
 If not defined, use my own u16int_to_str variant, it's save about 800 byte of code size
 on AVR (avr-gcc build).
 Try to build with and without, and compare total code size for tune library.
 */
 #define _USE_LIBC_STDIO
 /*
 Enable 'interrupt signal' callback, if user press Ctrl+C */
 //#define _USE_CTLR_C
 /*
 Print prompt at 'microrl_init', if enable, prompt will print at startup, 
 otherwise first prompt will print after first press Enter in terminal
 NOTE!: Enable it, if you call 'microrl_init' after your communication subsystem 
 already initialize and ready to print message */
 #define _ENABLE_INIT_PROMPT
 /*
 New line symbol */
 #define _ENDL_CR
 #if defined(_ENDL_CR)
 #define ENDL "\r"
 #elif defined(_ENDL_CRLF)
 #define ENDL "\r\n"
 #elif defined(_ENDL_LF)
 #define ENDL "\n"
 #elif defined(_ENDL_LFCR)
 #define ENDL "\n\r"
 #else
 #error "You must define new line symbol."
 #endif
 /********** END CONFIG SECTION ************/
 #if _RING_HISTORY_LEN > 256
 #error "This history implementation (ring buffer with 1 byte iterator) allow 256 byte buffer size maximum"
 #endif
 #endif
--- a/lib/helius_microrl/microrl.c
+++ b/lib/helius_microrl/microrl.c
@ -0,0 +1,684 @@
 /*
 Author: Samoylov Eugene aka Helius (ghelius@gmail.com)
 BUGS and TODO:
 -- add echo_off feature
 -- rewrite history for use more than 256 byte buffer
 */
 #include <string.h>
 #include <ctype.h>
 #include <stdlib.h>
 #include "microrl.h"
 #ifdef _USE_LIBC_STDIO
 #include <stdio.h>
 #endif
 //#define DBG(...) fprintf(stderr, "\033[33m");fprintf(stderr,__VA_ARGS__);fprintf(stderr,"\033[0m");
 char * prompt_default = _PROMPT_DEFAULT;
 #ifdef _USE_HISTORY
 #ifdef _HISTORY_DEBUG
 //*****************************************************************************
 // print buffer content on screen
 static void print_hist (ring_history_t * pThis)
 {
 	printf ("\n");
 	for (int i = 0; i < _RING_HISTORY_LEN; i++) {
 		if (i == pThis->begin)
 			printf ("b");
 		else 
 			printf (" ");
 	}
 	printf ("\n");
 	for (int i = 0; i < _RING_HISTORY_LEN; i++) {
 		if (isalpha(pThis->ring_buf[i]))
 			printf ("%c", pThis->ring_buf[i]);
 		else 
 			printf ("%d", pThis->ring_buf[i]);
 	}
 	printf ("\n");
 	for (int i = 0; i < _RING_HISTORY_LEN; i++) {
 		if (i == pThis->end)
 			printf ("e");
 		else 
 			printf (" ");
 	}
 	printf ("\n");
 }
 #endif
 //*****************************************************************************
 // remove older message from ring buffer
 static void hist_erase_older (ring_history_t * pThis)
 {
 	int new_pos = pThis->begin + pThis->ring_buf [pThis->begin] + 1;
 	if (new_pos >= _RING_HISTORY_LEN)
 		new_pos = new_pos - _RING_HISTORY_LEN;
 	pThis->begin = new_pos;
 }
 //*****************************************************************************
 // check space for new line, remove older while not space
 static int hist_is_space_for_new (ring_history_t * pThis, int len)
 {
 	if (pThis->ring_buf [pThis->begin] == 0)
 		return true;
 	if (pThis->end >= pThis->begin) {
 		if (_RING_HISTORY_LEN - pThis->end + pThis->begin - 1 > len)
 			return true;
 	}	else {
 		if (pThis->begin - pThis->end - 1> len)
 			return true;
 	}
 	return false;
 }
 //*****************************************************************************
 // put line to ring buffer
 static void hist_save_line (ring_history_t * pThis, char * line, int len)
 {
 	if (len > _RING_HISTORY_LEN - 2)
 		return;
 	while (!hist_is_space_for_new (pThis, len)) {
 		hist_erase_older (pThis);
 	}
 	// if it's first line
 	if (pThis->ring_buf [pThis->begin] == 0) 
 		pThis->ring_buf [pThis->begin] = len;
 	// store line
 	if (len < _RING_HISTORY_LEN-pThis->end-1)
 		memcpy (pThis->ring_buf + pThis->end + 1, line, len);
 	else {
 		int part_len = _RING_HISTORY_LEN-pThis->end-1;
 		memcpy (pThis->ring_buf + pThis->end + 1, line, part_len);
 		memcpy (pThis->ring_buf, line + part_len, len - part_len);
 	}
 	pThis->ring_buf [pThis->end] = len;
 	pThis->end = pThis->end + len + 1;
 	if (pThis->end >= _RING_HISTORY_LEN)
 		pThis->end -= _RING_HISTORY_LEN;
 	pThis->ring_buf [pThis->end] = 0;
 	pThis->cur = 0;
 #ifdef _HISTORY_DEBUG
 	print_hist (pThis);
 #endif
 }
 //*****************************************************************************
 // copy saved line to 'line' and return size of line
 static int hist_restore_line (ring_history_t * pThis, char * line, int dir)
 {
 	int cnt = 0;
 	// count history record	
 	int header = pThis->begin;
 	while (pThis->ring_buf [header] != 0) {
 		header += pThis->ring_buf [header] + 1;
 		if (header >= _RING_HISTORY_LEN)
 			header -= _RING_HISTORY_LEN; 
 		cnt++;
 	}
 	if (dir == _HIST_UP) {
 		if (cnt >= pThis->cur) {
 			int header = pThis->begin;
 			int j = 0;
 			// found record for 'pThis->cur' index
 			while ((pThis->ring_buf [header] != 0) && (cnt - j -1 != pThis->cur)) {
 				header += pThis->ring_buf [header] + 1;
 				if (header >= _RING_HISTORY_LEN)
 					header -= _RING_HISTORY_LEN;
 				j++;
 			}
 			if (pThis->ring_buf[header]) {
 					pThis->cur++;
 				// obtain saved line
 				if (pThis->ring_buf [header] + header < _RING_HISTORY_LEN) {
 					memset (line, 0, _COMMAND_LINE_LEN);
 					memcpy (line, pThis->ring_buf + header + 1, pThis->ring_buf[header]);
 				} else {
 					int part0 = _RING_HISTORY_LEN - header - 1;
 					memset (line, 0, _COMMAND_LINE_LEN);
 					memcpy (line, pThis->ring_buf + header + 1, part0);
 					memcpy (line + part0, pThis->ring_buf, pThis->ring_buf[header] - part0);
 				}
 				return pThis->ring_buf[header];
 			}
 		}
 	} else {
 		if (pThis->cur > 0) {
 				pThis->cur--;
 			int header = pThis->begin;
 			int j = 0;
 			while ((pThis->ring_buf [header] != 0) && (cnt - j != pThis->cur)) {
 				header += pThis->ring_buf [header] + 1;
 				if (header >= _RING_HISTORY_LEN)
 					header -= _RING_HISTORY_LEN;
 				j++;
 			}
 			if (pThis->ring_buf [header] + header < _RING_HISTORY_LEN) {
 				memcpy (line, pThis->ring_buf + header + 1, pThis->ring_buf[header]);
 			} else {
 				int part0 = _RING_HISTORY_LEN - header - 1;
 				memcpy (line, pThis->ring_buf + header + 1, part0);
 				memcpy (line + part0, pThis->ring_buf, pThis->ring_buf[header] - part0);
 			}
 			return pThis->ring_buf[header];
 		} else {
 			/* empty line */
 			return 0;
 		}
 	}
 	return -1;
 }
 #endif
 //*****************************************************************************
 // split cmdline to tkn array and return nmb of token
 static int split (microrl_t * pThis, int limit, char const ** tkn_arr)
 {
 	int i = 0;
 	int ind = 0;
 	while (1) {
 		// go to the first whitespace (zerro for us)
 		while ((pThis->cmdline [ind] == '\0') && (ind < limit)) {
 			ind++;
 		}
 		if (!(ind < limit)) return i;
 		tkn_arr[i++] = pThis->cmdline + ind;
 		if (i >= _COMMAND_TOKEN_NMB) {
 			return -1;
 		}
 		// go to the first NOT whitespace (not zerro for us)
 		while ((pThis->cmdline [ind] != '\0') && (ind < limit)) {
 			ind++;
 		}
 		if (!(ind < limit)) return i;
 	}
 	return i;
 }
 //*****************************************************************************
 inline static void print_prompt (microrl_t * pThis)
 {
 	pThis->print (pThis->prompt_str);
 }
 //*****************************************************************************
 inline static void terminal_backspace (microrl_t * pThis)
 {
 		pThis->print ("\033[D \033[D");
 }
 //*****************************************************************************
 inline static void terminal_newline (microrl_t * pThis)
 {
 	pThis->print (ENDL);
 }
 #ifndef _USE_LIBC_STDIO
 //*****************************************************************************
 // convert 16 bit value to string
 // 0 value not supported!!! just make empty string
 // Returns pointer to a buffer tail
 static char *u16bit_to_str (unsigned int nmb, char * buf)
 {
 	char tmp_str [6] = {0,};
 	int i = 0, j;
 	if (nmb <= 0xFFFF) {
 		while (nmb > 0) {
 			tmp_str[i++] = (nmb % 10) + '0';
 			nmb /=10;
 		}
 		for (j = 0; j < i; ++j)
 			*(buf++) = tmp_str [i-j-1];
 	}
 	*buf = '\0';
 	return buf;
 }
 #endif
 //*****************************************************************************
 // set cursor at position from begin cmdline (after prompt) + offset
 static void terminal_move_cursor (microrl_t * pThis, int offset)
 {
 	char str[16] = {0,};
 #ifdef _USE_LIBC_STDIO 
 	if (offset > 0) {
 		snprintf (str, 16, "\033[%dC", offset);
 	} else if (offset < 0) {
 		snprintf (str, 16, "\033[%dD", -(offset));
 	}
 #else 
 	char *endstr;
 	strcpy (str, "\033[");
 	if (offset > 0) {
 		endstr = u16bit_to_str (offset, str+2);
 		strcpy (endstr, "C");
 	} else if (offset < 0) {
 		endstr = u16bit_to_str (-(offset), str+2);
 		strcpy (endstr, "D");
 	} else
 		return;
 #endif	
 	pThis->print (str);
 }
 //*****************************************************************************
 static void terminal_reset_cursor (microrl_t * pThis)
 {
 	char str[16];
 #ifdef _USE_LIBC_STDIO
 	snprintf (str, 16, "\033[%dD\033[%dC", \
 						_COMMAND_LINE_LEN + _PROMPT_LEN + 2, _PROMPT_LEN);
 #else
 	char *endstr;
 	strcpy (str, "\033[");
 	endstr = u16bit_to_str ( _COMMAND_LINE_LEN + _PROMPT_LEN + 2,str+2);
 	strcpy (endstr, "D\033["); endstr += 3;
 	endstr = u16bit_to_str (_PROMPT_LEN, endstr);
 	strcpy (endstr, "C");
 #endif
 	pThis->print (str);
 }
 //*****************************************************************************
 // print cmdline to screen, replace '\0' to wihitespace 
 static void terminal_print_line (microrl_t * pThis, int pos, int cursor)
 {
 	pThis->print ("\033[K");    // delete all from cursor to end
 	char nch [] = {0,0};
 	int i;
 	for (i = pos; i < pThis->cmdlen; i++) {
 		nch [0] = pThis->cmdline [i];
 		if (nch[0] == '\0')
 			nch[0] = ' ';
 		pThis->print (nch);
 	}
 	terminal_reset_cursor (pThis);
 	terminal_move_cursor (pThis, cursor);
 }
 //*****************************************************************************
 void microrl_init (microrl_t * pThis, void (*print) (const char *)) 
 {
 	memset(pThis->cmdline, 0, _COMMAND_LINE_LEN);
 #ifdef _USE_HISTORY
 	memset(pThis->ring_hist.ring_buf, 0, _RING_HISTORY_LEN);
 	pThis->ring_hist.begin = 0;
 	pThis->ring_hist.end = 0;
 	pThis->ring_hist.cur = 0;
 #endif
 	pThis->cmdlen =0;
 	pThis->cursor = 0;
 	pThis->execute = NULL;
 	pThis->get_completion = NULL;
 #ifdef _USE_CTLR_C
 	pThis->sigint = NULL;
 #endif
 	pThis->prompt_str = prompt_default;
 	pThis->print = print;
 #ifdef _ENABLE_INIT_PROMPT
 	print_prompt (pThis);
 #endif
 }
 //*****************************************************************************
 void microrl_set_complete_callback (microrl_t * pThis, char ** (*get_completion)(int, const char* const*))
 {
 	pThis->get_completion = get_completion;
 }
 //*****************************************************************************
 void microrl_set_execute_callback (microrl_t * pThis, int (*execute)(int, const char* const*))
 {
 	pThis->execute = execute;
 }
 #ifdef _USE_CTLR_C
 //*****************************************************************************
 void microrl_set_sigint_callback (microrl_t * pThis, void (*sigintf)(void))
 {
 	pThis->sigint = sigintf;
 }
 #endif
 #ifdef _USE_ESC_SEQ
 static void hist_search (microrl_t * pThis, int dir)
 {
 	int len = hist_restore_line (&pThis->ring_hist, pThis->cmdline, dir);
 	if (len >= 0) {
 		pThis->cursor = pThis->cmdlen = len;
 		terminal_reset_cursor (pThis);
 		terminal_print_line (pThis, 0, pThis->cursor);
 	}
 }
 //*****************************************************************************
 // handling escape sequences
 static int escape_process (microrl_t * pThis, char ch)
 {
 	if (ch == '[') {
 		pThis->escape_seq = _ESC_BRACKET;
 		return 0;
 	} else if (pThis->escape_seq == _ESC_BRACKET) {
 		if (ch == 'A') {
 #ifdef _USE_HISTORY
 			hist_search (pThis, _HIST_UP);
 #endif
 			return 1;
 		} else if (ch == 'B') {
 #ifdef _USE_HISTORY
 			hist_search (pThis, _HIST_DOWN);
 #endif
 			return 1;
 		} else if (ch == 'C') {
 			if (pThis->cursor < pThis->cmdlen) {
 				terminal_move_cursor (pThis, 1);
 				pThis->cursor++;
 			}
 			return 1;
 		} else if (ch == 'D') {
 			if (pThis->cursor > 0) {
 				terminal_move_cursor (pThis, -1);
 				pThis->cursor--;
 			}
 			return 1;
 		} else if (ch == '7') {
 			pThis->escape_seq = _ESC_HOME;
 			return 0;
 		} else if (ch == '8') {
 			pThis->escape_seq = _ESC_END;
 			return 0;
 		} 
 	} else if (ch == '~') {
 		if (pThis->escape_seq == _ESC_HOME) {
 			terminal_reset_cursor (pThis);
 			pThis->cursor = 0;
 			return 1;
 		} else if (pThis->escape_seq == _ESC_END) {
 			terminal_move_cursor (pThis, pThis->cmdlen-pThis->cursor);
 			pThis->cursor = pThis->cmdlen;
 			return 1;
 		}
 	}
 	/* unknown escape sequence, stop */
 	return 1;
 }
 #endif
 //*****************************************************************************
 // insert len char of text at cursor position
 static int microrl_insert_text (microrl_t * pThis, char * text, int len)
 {
 	int i;
 	if (pThis->cmdlen + len < _COMMAND_LINE_LEN) {
 		memmove (pThis->cmdline + pThis->cursor + len,
 						 pThis->cmdline + pThis->cursor,
 						 pThis->cmdlen - pThis->cursor);
 		for (i = 0; i < len; i++) {
 			pThis->cmdline [pThis->cursor + i] = text [i];
 			if (pThis->cmdline [pThis->cursor + i] == ' ') {
 				pThis->cmdline [pThis->cursor + i] = 0;
 			}
 		}
 		pThis->cursor += len;
 		pThis->cmdlen += len;
 		pThis->cmdline [pThis->cmdlen] = '\0';
 		return true;
 	}
 	return false;
 }
 //*****************************************************************************
 // remove one char at cursor
 static void microrl_backspace (microrl_t * pThis)
 {
 	if (pThis->cursor > 0) {
 		terminal_backspace (pThis);
 		memmove (pThis->cmdline + pThis->cursor-1,
 						 pThis->cmdline + pThis->cursor,
 						 pThis->cmdlen-pThis->cursor+1);
 		pThis->cursor--;
 		pThis->cmdline [pThis->cmdlen] = '\0';
 		pThis->cmdlen--;
 	}
 }
 #ifdef _USE_COMPLETE
 //*****************************************************************************
 static int common_len (char ** arr)
 {
 	unsigned int i;
 	unsigned int j;
 	char *shortest = arr[0];
 	unsigned int shortlen = strlen(shortest);
 	for (i = 0; arr[i] != NULL; ++i)
 		if (strlen(arr[i]) < shortlen) {
 			shortest = arr[i];
 			shortlen = strlen(shortest);
 		}
 	for (i = 0; i < shortlen; ++i)
 		for (j = 0; arr[j] != 0; ++j)
 			if (shortest[i] != arr[j][i])
 				return i;
 	return i;
 }
 //*****************************************************************************
 static void microrl_get_complite (microrl_t * pThis) 
 {
 	char const * tkn_arr[_COMMAND_TOKEN_NMB];
 	char ** compl_token; 
 	if (pThis->get_completion == NULL) // callback was not set
 		return;
 	int status = split (pThis, pThis->cursor, tkn_arr);
 	if (pThis->cmdline[pThis->cursor-1] == '\0')
 		tkn_arr[status++] = "";
 	compl_token = pThis->get_completion (status, tkn_arr);
 	if (compl_token[0] != NULL) {
 		int i = 0;
 		int len;
 		if (compl_token[1] == NULL) {
 			len = strlen (compl_token[0]);
 		} else {
 			len = common_len (compl_token);
 			terminal_newline (pThis);
 			while (compl_token [i] != NULL) {
 				pThis->print (compl_token[i]);
 				pThis->print (" ");
 				i++;
 			}
 			terminal_newline (pThis);
 			print_prompt (pThis);
 		}
 		if (len) {
 			microrl_insert_text (pThis, compl_token[0] + strlen(tkn_arr[status-1]), 
 																	len - strlen(tkn_arr[status-1]));
 			if (compl_token[1] == NULL) 
 				microrl_insert_text (pThis, " ", 1);
 		}
 		terminal_reset_cursor (pThis);
 		terminal_print_line (pThis, 0, pThis->cursor);
 	} 
 }
 #endif
 //*****************************************************************************
 void new_line_handler(microrl_t * pThis){
 	char const * tkn_arr [_COMMAND_TOKEN_NMB];
 	int status;
 	terminal_newline (pThis);
 #ifdef _USE_HISTORY
 	if (pThis->cmdlen > 0)
 		hist_save_line (&pThis->ring_hist, pThis->cmdline, pThis->cmdlen);
 #endif
 	status = split (pThis, pThis->cmdlen, tkn_arr);
 	if (status == -1){
 		//          pThis->print ("ERROR: Max token amount exseed\n");
 		pThis->print ("ERROR:too many tokens");
 		pThis->print (ENDL);
 	}
 	if ((status > 0) && (pThis->execute != NULL))
 		pThis->execute (status, tkn_arr);
 	print_prompt (pThis);
 	pThis->cmdlen = 0;
 	pThis->cursor = 0;
 	memset(pThis->cmdline, 0, _COMMAND_LINE_LEN);
 #ifdef _USE_HISTORY
 	pThis->ring_hist.cur = 0;
 #endif
 }
 //*****************************************************************************
 void microrl_insert_char (microrl_t * pThis, int ch)
 {
 #ifdef _USE_ESC_SEQ
 	if (pThis->escape) {
 		if (escape_process(pThis, ch))
 			pThis->escape = 0;
 	} else {
 #endif
 		switch (ch) {
 			//-----------------------------------------------------
 #ifdef _ENDL_CR
 			case KEY_CR:
 				new_line_handler(pThis);
 			break;
 			case KEY_LF:
 			break;
 #elif defined(_ENDL_CRLF)
 			case KEY_CR:
 				pThis->tmpch = KEY_CR;
 			break;
 			case KEY_LF:
 			if (pThis->tmpch == KEY_CR)
 				new_line_handler(pThis);
 			break;
 #elif defined(_ENDL_LFCR)
 			case KEY_LF:
 				pThis->tmpch = KEY_LF;
 			break;
 			case KEY_CR:
 			if (pThis->tmpch == KEY_LF)
 				new_line_handler(pThis);
 			break;
 #else
 			case KEY_CR:
 			break;
 			case KEY_LF:
 				new_line_handler(pThis);
 			break;
 #endif
 			//-----------------------------------------------------
 #ifdef _USE_COMPLETE
 			case KEY_HT:
 				microrl_get_complite (pThis);
 			break;
 #endif
 			//-----------------------------------------------------
 			case KEY_ESC:
 #ifdef _USE_ESC_SEQ
 				pThis->escape = 1;
 #endif
 			break;
 			//-----------------------------------------------------
 			case KEY_NAK: // ^U
 					while (pThis->cursor > 0) {
 					microrl_backspace (pThis);
 				}
 				terminal_print_line (pThis, 0, pThis->cursor);
 			break;
 			//-----------------------------------------------------
 			case KEY_VT:  // ^K
 				pThis->print ("\033[K");
 				pThis->cmdlen = pThis->cursor;
 			break;
 			//-----------------------------------------------------
 			case KEY_ENQ: // ^E
 				terminal_move_cursor (pThis, pThis->cmdlen-pThis->cursor);
 				pThis->cursor = pThis->cmdlen;
 			break;
 			//-----------------------------------------------------
 			case KEY_SOH: // ^A
 				terminal_reset_cursor (pThis);
 				pThis->cursor = 0;
 			break;
 			//-----------------------------------------------------
 			case KEY_ACK: // ^F
 			if (pThis->cursor < pThis->cmdlen) {
 				terminal_move_cursor (pThis, 1);
 				pThis->cursor++;
 			}
 			break;
 			//-----------------------------------------------------
 			case KEY_STX: // ^B
 			if (pThis->cursor) {
 				terminal_move_cursor (pThis, -1);
 				pThis->cursor--;
 			}
 			break;
 			//-----------------------------------------------------
 			case KEY_DLE: //^P
 #ifdef _USE_HISTORY
 			hist_search (pThis, _HIST_UP);
 #endif
 			break;
 			//-----------------------------------------------------
 			case KEY_SO: //^N
 #ifdef _USE_HISTORY
 			hist_search (pThis, _HIST_DOWN);
 #endif
 			break;
 			//-----------------------------------------------------
 			case KEY_DEL: // Backspace
 			case KEY_BS: // ^U
 				microrl_backspace (pThis);
 				terminal_print_line (pThis, pThis->cursor, pThis->cursor);
 			break;
 #ifdef _USE_CTLR_C
 			case KEY_ETX:
 			if (pThis->sigint != NULL)
 				pThis->sigint();
 			break;
 #endif
 			//-----------------------------------------------------
 			default:
 			if (((ch == ' ') && (pThis->cmdlen == 0)) || IS_CONTROL_CHAR(ch))
 				break;
 			if (microrl_insert_text (pThis, (char*)&ch, 1))
 				terminal_print_line (pThis, pThis->cursor-1, pThis->cursor);
 			break;
 		}
 #ifdef _USE_ESC_SEQ
 	}
 #endif
 }
--- a/lib/helius_microrl/microrl.h
+++ b/lib/helius_microrl/microrl.h
@ -0,0 +1,117 @@
 #ifndef _MICRORL_H_
 #define _MICRORL_H_
 #include "config.h"
 #define true  1
 #define false 0
 /* define the Key codes */
 #define KEY_NUL 0 /**< ^@ Null character */
 #define KEY_SOH 1 /**< ^A Start of heading, = console interrupt */
 #define KEY_STX 2 /**< ^B Start of text, maintenance mode on HP console */
 #define KEY_ETX 3 /**< ^C End of text */
 #define KEY_EOT 4 /**< ^D End of transmission, not the same as ETB */
 #define KEY_ENQ 5 /**< ^E Enquiry, goes with ACK; old HP flow control */
 #define KEY_ACK 6 /**< ^F Acknowledge, clears ENQ logon hand */
 #define KEY_BEL 7 /**< ^G Bell, rings the bell... */
 #define KEY_BS  8 /**< ^H Backspace, works on HP terminals/computers */
 #define KEY_HT  9 /**< ^I Horizontal tab, move to next tab stop */
 #define KEY_LF  10  /**< ^J Line Feed */
 #define KEY_VT  11  /**< ^K Vertical tab */
 #define KEY_FF  12  /**< ^L Form Feed, page eject */
 #define KEY_CR  13  /**< ^M Carriage Return*/
 #define KEY_SO  14  /**< ^N Shift Out, alternate character set */
 #define KEY_SI  15  /**< ^O Shift In, resume defaultn character set */
 #define KEY_DLE 16  /**< ^P Data link escape */
 #define KEY_DC1 17  /**< ^Q XON, with XOFF to pause listings; "okay to send". */
 #define KEY_DC2 18  /**< ^R Device control 2, block-mode flow control */
 #define KEY_DC3 19  /**< ^S XOFF, with XON is TERM=18 flow control */
 #define KEY_DC4 20  /**< ^T Device control 4 */
 #define KEY_NAK 21  /**< ^U Negative acknowledge */
 #define KEY_SYN 22  /**< ^V Synchronous idle */
 #define KEY_ETB 23  /**< ^W End transmission block, not the same as EOT */
 #define KEY_CAN 24  /**< ^X Cancel line, MPE echoes !!! */
 #define KEY_EM  25  /**< ^Y End of medium, Control-Y interrupt */
 #define KEY_SUB 26  /**< ^Z Substitute */
 #define KEY_ESC 27  /**< ^[ Escape, next character is not echoed */
 #define KEY_FS  28  /**< ^\ File separator */
 #define KEY_GS  29  /**< ^] Group separator */
 #define KEY_RS  30  /**< ^^ Record separator, block-mode terminator */
 #define KEY_US  31  /**< ^_ Unit separator */
 #define KEY_DEL 127 /**< Delete (not a real control character...) */
 #define IS_CONTROL_CHAR(x) ((x)<=31)
 // direction of history navigation
 #define _HIST_UP   0
 #define _HIST_DOWN 1
 // esc seq internal codes
 #define _ESC_BRACKET  1
 #define _ESC_HOME     2
 #define _ESC_END      3
 #ifdef _USE_HISTORY
 // history struct, contain internal variable
 // history store in static ring buffer for memory saving
 typedef struct {
 	char ring_buf [_RING_HISTORY_LEN];
 	int begin;
 	int end;
 	int cur;
 } ring_history_t;
 #endif
 // microrl struct, contain internal library data
 typedef struct {
 #ifdef _USE_ESC_SEQ
 	char escape_seq;
 	char escape;
 #endif
 #if (defined(_ENDL_CRLF) || defined(_ENDL_LFCR))
 	char tmpch;
 #endif
 #ifdef _USE_HISTORY
 	ring_history_t ring_hist;          // history object
 #endif
 	char * prompt_str;                 // pointer to prompt string
 	char cmdline [_COMMAND_LINE_LEN];  // cmdline buffer
 	int cmdlen;                        // last position in command line
 	int cursor;                        // input cursor
 	int (*execute) (int argc, const char * const * argv );            // ptr to 'execute' callback
 	char ** (*get_completion) (int argc, const char * const * argv ); // ptr to 'completion' callback
 	void (*print) (const char *);                                     // ptr to 'print' callback
 #ifdef _USE_CTLR_C
 	void (*sigint) (void);
 #endif
 } microrl_t;
 // init internal data, calls once at start up
 void microrl_init (microrl_t * pThis, void (*print)(const char*));
 // set echo mode (true/false), using for disabling echo for password input
 // echo mode will enabled after user press Enter.
 void microrl_set_echo (int);
 // set pointer to callback complition func, that called when user press 'Tab'
 // callback func description:
 //   param: argc - argument count, argv - pointer array to token string
 //   must return NULL-terminated string, contain complite variant splitted by 'Whitespace'
 //   If complite token found, it's must contain only one token to be complitted
 //   Empty string if complite not found, and multiple string if there are some token
 void microrl_set_complete_callback (microrl_t * pThis, char ** (*get_completion)(int, const char* const*));
 // pointer to callback func, that called when user press 'Enter'
 // execute func param: argc - argument count, argv - pointer array to token string
 void microrl_set_execute_callback (microrl_t * pThis, int (*execute)(int, const char* const*));
 // set callback for Ctrl+C terminal signal
 #ifdef _USE_CTLR_C
 void microrl_set_sigint_callback (microrl_t * pThis, void (*sigintf)(void));
 #endif
 // insert char to cmdline (for example call in usart RX interrupt)
 void microrl_insert_char (microrl_t * pThis, int ch);
 #endif
--- a/src/cli_microrl.c
+++ b/src/cli_microrl.c
@ -0,0 +1,148 @@
 #include <stdio.h>
 #include <string.h>
 #include <avr/pgmspace.h>
 #include "../lib/hd44780_111/hd44780.h"
 #include "../lib/andygock_avr-uart/uart.h"
 #include "hmi_msg.h"
 #include "print_helper.h"
 #include "cli_microrl.h"
 typedef struct cli_cmd {
    PGM_P cmd;
    PGM_P help;
    void (*func_p)();
    const uint8_t func_argc;
 } cli_cmd_t;
 const cli_cmd_t cli_cmds[] = {
    {help_cmd, help_help, cli_print_help, 0},
    {ver_cmd, ver_help, cli_print_ver, 0},
    {ascii_cmd, ascii_help, cli_print_ascii_tbls, 0},
    {month_cmd, month_help, cli_handle_month, 1}
 };
 void cli_print(const char *str)
 {
    printf("%s", str);
 }
 char cli_get_char(void)
 {
    if (uart0_peek() != UART_NO_DATA) {
        return uart0_getc() & UART_STATUS_MASK;
    } else {
        return 0x00;
    }
 }
 void cli_print_help(const char *const *argv)
 {
    (void) argv;
    putc('\n', stdout);
    printf_P(PSTR(CLI_HELP_MSG "\n"));
    for (uint8_t i = 0; i < NUM_ELEMS(cli_cmds); i++) {
        printf_P(cli_cmds[i].cmd);
        printf_P(PSTR(" : "));
        printf_P(cli_cmds[i].help);
        putc('\n', stdout);
    }
 }
 void print_version(FILE *stream)
 {
    // Print program and libc versions
    fprintf_P(stream, PSTR(PROG_VERSION "\n"),
              PSTR(GIT_DESCR), PSTR(__DATE__), PSTR(__TIME__));
    fprintf_P(stream, PSTR(LIBC_VERSION "\n"),
              PSTR(__AVR_LIBC_VERSION_STRING__),
              PSTR(__VERSION__));
 }
 void cli_print_ver(const char *const *argv)
 {
    (void) argv;
    putc('\n', stdout);
    print_version(stdout);
 }
 void cli_print_ascii_tbls(const char *const *argv)
 {
    (void) argv;
    putc('\n', stdout);
    // ASCII table print
    print_ascii_tbl(stdout);
    unsigned char ascii[128];
    for (unsigned char i = 0; i < sizeof(ascii); i++) {
        ascii[i] = i;
    }
    print_for_human(stdout, ascii, sizeof(ascii));
 }
 void cli_handle_month(const char *const *argv)
 {
    putc('\n', stdout);
    lcd_goto(0x40); // Got to the beginning of the next line
    char spaces_to_print = 16;
    for (int i = 0; i < 6; i++) {
        if (!strncmp_P(argv[1],
                       (PGM_P)pgm_read_word(&months[i]),
                       strlen(argv[1]))) {
            char printed_count;
            printed_count = fprintf_P(stdout, (PGM_P)pgm_read_word(&months[i]));
            fputc('\n', stdout);
            lcd_puts_P((PGM_P)pgm_read_word(&months[i]));
            lcd_putc(' ');
            spaces_to_print -= (printed_count + 1);
        }
    }
    // Clear the end of the line
    for (; spaces_to_print > -1; spaces_to_print--) {
        lcd_putc(' ');
    }
 }
 void cli_print_cmd_error(void)
 {
    putc('\n', stdout);
    printf_P(PSTR(CLI_NO_CMD "\n"));
 }
 void cli_print_cmd_arg_error(void)
 {
    putc('\n', stdout);
    printf_P(PSTR(CLI_ARGS_MSG "\n"));
 }
 int cli_execute(int argc, const char *const *argv)
 {
    for (uint8_t i = 0; i < NUM_ELEMS(cli_cmds); i++) {
        if (!strcmp_P(argv[0], cli_cmds[i].cmd)) {
            // Test do we have correct arguments to run command
            // Function arguments count shall be defined in struct
            if ((argc - 1) != cli_cmds[i].func_argc) {
                cli_print_cmd_arg_error();
                return 0;
            }
            // Hand argv over to function pointer,
            // cross fingers and hope that funcion handles it properly
            cli_cmds[i].func_p (argv);
            return 0;
        }
    }
    cli_print_cmd_error();
    return 0;
 }
--- a/src/cli_microrl.h
+++ b/src/cli_microrl.h
@ -0,0 +1,19 @@
 #ifndef _CLI_MICRORL_H_
 #define _CLI_MICRORL_H_
 #define NUM_ELEMS(x)        (sizeof(x) / sizeof((x)[0]))
 #define UART_STATUS_MASK    0x00FF
 void cli_print(const char * str);
 char cli_get_char(void);
 void cli_print_help(const char *const *argv);
 void print_version(FILE *stream);
 void cli_print_ver(const char *const *argv);
 void cli_print_ascii_tbls(const char *const *argv);
 void cli_handle_month(const char *const *argv);
 void cli_print_cmd_error(void);
 void cli_print_cmd_arg_error(void);
 int cli_execute(int argc, const char *const *argv);
 #endif /* _CLI_MICRORL_H_ */
--- a/src/hmi_msg.c
+++ b/src/hmi_msg.c
@ -0,0 +1,20 @@
 #include <avr/pgmspace.h>
 #include "hmi_msg.h"
 static const char m1[] PROGMEM = "January";
 static const char m2[] PROGMEM = "February";
 static const char m3[] PROGMEM = "March";
 static const char m4[] PROGMEM = "April";
 static const char m5[] PROGMEM = "May";
 static const char m6[] PROGMEM = "June";
 PGM_P const months[] PROGMEM = {m1, m2, m3, m4, m5, m6};
 const char help_cmd[] PROGMEM = HELP_CMD;
 const char help_help[] PROGMEM = HELP_HELP;
 const char ver_cmd[] PROGMEM = VER_CMD;
 const char ver_help[] PROGMEM = VER_HELP;
 const char ascii_cmd[] PROGMEM = ASCII_CMD;
 const char ascii_help[] PROGMEM = ASCII_HELP;
 const char month_cmd[] PROGMEM = MONTH_CMD;
 const char month_help[] PROGMEM = MONTH_HELP;
--- a/src/hmi_msg.h
+++ b/src/hmi_msg.h
@ -1,12 +1,33 @@
 #ifndef _HMI_MSG_H_
 #define _HMI_MSG_H_
 #define PROG_VERSION "Version: %S built on: %S %S"
 #define LIBC_VERSION "avr-libc version: %S avr-gcc version: %S"
 #define STUD_NAME "Arti Zirk"
-const char *ENG_MONTH[6] = {"January",
+#define GET_MONTH_MSG "Enter Month name first letter >"
-                            "February",
+#define UPTIME_MSG "Uptime: %lu s"
-                            "March",
+
-                            "April",
+#define HELP_CMD "help"
-                            "May",
+#define HELP_HELP "Get help"
-                            "June",};
+#define VER_CMD "version"
 #define VER_HELP "Print FW version"
 #define ASCII_CMD "ascii"
 #define ASCII_HELP "print ASCII tables"
 #define MONTH_CMD "month"
 #define MONTH_HELP "Find matching month from lookup list. Usage: month <string>"
 #define CLI_HELP_MSG "Implemented commands:"
 #define CLI_NO_CMD "Command not implemented.\n Use <help> to get help."
 #define CLI_ARGS_MSG "To few or to many arguments for this command\nUse <help>"
 extern PGM_P const months[];
 extern const char help_cmd[];
 extern const char help_help[];
 extern const char ver_cmd[];
 extern const char ver_help[];
 extern const char ascii_cmd[];
 extern const char ascii_help[];
 extern const char month_cmd[];
 extern const char month_help[];
 #endif /* _HMI_MSG_H_ */
--- a/src/main.c
+++ b/src/main.c
@ -1,52 +1,110 @@
 #include <stdio.h>
 #include <string.h>
 #include <time.h>
 #include <avr/io.h>
 #include <avr/interrupt.h>
 #include <avr/pgmspace.h>
 #include <util/delay.h>
 #include "hmi_msg.h"
-#include "uart.h"
+#include "../lib/andygock_avr-uart/uart.h"
 #include "uart_wrap.h"
 #include "print_helper.h"
 #include "../lib/hd44780_111/hd44780.h"
 #include "../lib/helius_microrl/microrl.h"
 #include "cli_microrl.h"
 #define BAUDRATE 9600
 // For configuring arduino mega pin 25
 #define LED_INIT DDRA |= _BV(DDA3);
 #define LED_TOGGLE PORTA ^= _BV(PORTA3)
 #define UART_STATUS_MASK    0x00FF
 // Create microrl object and pointer on it
 static microrl_t rl;
 static microrl_t *prl = &rl;
 static inline void init_system_clock(void)
 {
    TCCR5A = 0; // Clear control register A
    TCCR5B = 0; // Clear control register B
    TCCR5B |= _BV(WGM52) | _BV(CS52); // CTC and fCPU/256
    OCR5A = 62549; // 1 s
    TIMSK5 |= _BV(OCIE5A); // Output Compare A Match Interrupt Enable
 }
 static inline void init_hw (void)
 {
    // IO init
    /// Set arduino pin 25 as output
    LED_INIT;
    // System clock
    init_system_clock();
    // UART init
    uart0_init(UART_BAUD_SELECT(BAUDRATE, F_CPU));
    uart3_init(UART_BAUD_SELECT(BAUDRATE, F_CPU));
    stdout = stdin = &uart0_io;
    stderr = &uart3_out;
    // LCD init
    lcd_init();
    lcd_clrscr();
    // Enable interupts
    sei();
 }
 static inline void start_ui (void)
 {
    print_version(stderr);
    // print student name
    fprintf_P(stdout, PSTR(STUD_NAME));
    fputc('\n', stdout); // Add a new line to the uart printout
    lcd_puts_P(PSTR(STUD_NAME));
 }
 static inline void start_cli(void)
 {
    // Call init with ptr to microrl instance and print callback
    microrl_init (prl, cli_print);
    // Set callback for execute
    microrl_set_execute_callback (prl, cli_execute);
 }
 static inline void heartbeat (void)
 {
    static time_t time_prev;
    time_t time_cur = time(NULL);
    if (time_cur <= time_prev) {
        return;
    }
    time_prev = time_cur;
    fprintf_P(stderr, PSTR(UPTIME_MSG "\n"), time_cur);
    LED_TOGGLE;
 }
 #define BLINK_DELAY_MS 100
 int main (void)
 {
-    /* set pin 3 of PORTA for output*/
+    init_hw();
-    DDRA |= _BV(DDA3);
+    start_ui();
-    /* Init stdio on UART0 and UART3 and print user code info */
+    start_cli();
    uart0_init();
    uart3_init();
    stdout = stdin = &uart0_io;
    stderr = &uart3_out;
    fprintf(stderr, "Version: %s built on: %s %s\n",
            GIT_DESCR, __DATE__, __TIME__);
    fprintf(stderr, "avr-libc version: %s\n", __AVR_LIBC_VERSION_STRING__);
    /* End stdio init and info print */
    fprintf(stdout, STUD_NAME "\n");
    /* ASCII table print */
    print_ascii_tbl(stdout);
    unsigned char ascii[128] = {0};
    for (unsigned char i = 0; i < sizeof(ascii); i++) {
        ascii[i] = i;
    }
    print_for_human(stdout, ascii, sizeof(ascii));
    while (1) {
-        char month_first_leter;
+        heartbeat();
-        fprintf(stdout, "Enter Month name first letter >");
+        // CLI commands are handled in cli_execute()
-        fscanf(stdin, "%c", &month_first_leter);
+        microrl_insert_char (prl, cli_get_char());
        fprintf(stdout, "%c\n", month_first_leter);
        for (int i = 0; i < 6; i++) {
            if (!strncmp(strupr(&month_first_leter), ENG_MONTH[i], 1)) {
                fprintf(stdout, "%s\n", ENG_MONTH[i]);
            }
        }
        /* set pin 3 high to turn led on */
        PORTA |= _BV(PORTA3);
        _delay_ms(BLINK_DELAY_MS);
        /* set pin 3 low to turn led off */
        PORTA &= ~_BV(PORTA3);
        _delay_ms(BLINK_DELAY_MS);
    }
 }
 // System clock
 ISR(TIMER5_COMPA_vect)
 {
    system_tick();
 }
--- a/src/print_helper.c
+++ b/src/print_helper.c
@ -1,27 +1,33 @@
 #include <stdio.h>
 #include <avr/pgmspace.h>
 #include "print_helper.h"
-int print_ascii_tbl (FILE *stream) {
+int print_ascii_tbl (FILE *stream)
 {
    for (char c = ' '; c <= '~'; c++) {
-        if(!fprintf(stream, "%c ", c)) {
+        if (!fprintf(stream, "%c ", c)) {
            return 0;
        }
    }
    return fprintf(stream, "\n");
 }
-int print_for_human (FILE *stream, const unsigned char *array, const int len) {
+int print_for_human (FILE *stream, const unsigned char *array, const int len)
 {
    for (int i = 0; i < len; i++) {
-        if (array[i] >= ' ' && array[i] <= '~') {
+        unsigned char c = array[i];
-            if(!fprintf(stream, "%c", array[i])) {
+        if (c >= ' ' && c <= '~') {
            if (!fprintf(stream, "%c", c)) {
                return 0;
            }
        } else {
-            if(!fprintf(stream, "\"0x%02x\"", array[i])) {
+            if (!fprintf(stream, "\"0x%02x\"", c)) {
                return 0;
            }
        }
    }
-    return fprintf(stream, "\n");;
+
    return fprintf(stream, "\n");
 }
--- a/src/uart.c
+++ b/src/uart.c
@ -1,72 +0,0 @@
 #include <avr/io.h>
 #include <stdio.h>
 #ifndef F_CPU
 #define F_CPU 16000000UL
 #endif
 #ifndef BAUD
 #define BAUD 9600
 #endif
 #include <util/setbaud.h>
 /* http://www.cs.mun.ca/~rod/Winter2007/4723/notes/serial/serial.html */
 void uart0_init(void)
 {
    UBRR0H = UBRRH_VALUE;
    UBRR0L = UBRRL_VALUE;
 #if USE_2X
    UCSR0A |= _BV(U2X0);
 #else
    UCSR0A &= ~(_BV(U2X0));
 #endif
    UCSR0C = _BV(UCSZ01) | _BV(UCSZ00); /* 8-bit data */
    UCSR0B = _BV(RXEN0) | _BV(TXEN0);   /* Enable RX and TX */
 }
 void uart3_init(void)
 {
    UBRR3H = UBRRH_VALUE;
    UBRR3L = UBRRL_VALUE;
 #if USE_2X
    UCSR3A |= _BV(U2X3);
 #else
    UCSR3A &= ~(_BV(U2X3));
 #endif
    UCSR3C = _BV(UCSZ31) | _BV(UCSZ30); /* 8-bit data */
    UCSR3B = _BV(TXEN3);   /* Enable TX */
 }
 int uart0_putchar(char c, FILE *stream)
 {
    (void) stream;
    if (c == '\n') {
        uart0_putchar('\r', stream);
    }
    loop_until_bit_is_set(UCSR0A, UDRE0);
    UDR0 = c;
    return 0;
 }
 int uart3_putchar(char c, FILE *stream)
 {
    (void) stream;
    if (c == '\n') {
        uart3_putchar('\r', stream);
    }
    loop_until_bit_is_set(UCSR3A, UDRE3);
    UDR3 = c;
    return 0;
 }
 int uart0_getchar(FILE *stream)
 {
    (void) stream;
    loop_until_bit_is_set(UCSR0A, RXC0);
    return UDR0;
 }
--- a/src/uart.h
+++ b/src/uart.h
@ -1,17 +0,0 @@
 #ifndef _UART_H_
 #define _UART_H_
 int uart0_putchar(char c, FILE *stream);
 int uart0_getchar(FILE *stream);
 int uart3_putchar(char c, FILE *stream);
 void uart0_init(void);
 void uart3_init(void);
 /* http://www.ermicro.com/blog/?p=325 */
 FILE uart0_io = FDEV_SETUP_STREAM(uart0_putchar, uart0_getchar, _FDEV_SETUP_RW);
 FILE uart3_out = FDEV_SETUP_STREAM(uart3_putchar, NULL, _FDEV_SETUP_WRITE);
 #endif /* _UART_H_ */
--- a/src/uart_wrap.c
+++ b/src/uart_wrap.c
@ -0,0 +1,39 @@
 #include <avr/io.h>
 #include <stdio.h>
 #include "../lib/andygock_avr-uart/uart.h"
 #define UART_STATUS_MASK    0x00FF
 int uart0_putc_wrap(char c, FILE *stream)
 {
    (void) stream;
    if (c == '\n') {
        uart0_putc_wrap('\r', stream);
    }
    uart0_putc(c);
    return 0;
 }
 int uart0_getc_wrap(FILE *stream)
 {
    (void) stream;
    // Probabbly should add some error checking in here but because
    // this function is only called out when there is at least one character
    // available in the input buffer (see main.c line 114) then error checking
    // is not currently necessary.
    return uart0_getc() & UART_STATUS_MASK;
 }
 int uart3_putc_wrap(char c, FILE *stream)
 {
    (void) stream;
    if (c == '\n') {
        uart3_putc_wrap('\r', stream);
    }
    uart3_putc(c);
    return 0;
 }
--- a/src/uart_wrap.h
+++ b/src/uart_wrap.h
@ -0,0 +1,15 @@
 #ifndef _UART_WRAP_H_
 #define _UART_WRAP_H_
 int uart0_putc_wrap(char c, FILE *stream);
 int uart0_getc_wrap(FILE *stream);
 int uart3_putc_wrap(char c, FILE *stream);
 /* http://www.ermicro.com/blog/?p=325 */
 FILE uart0_io = FDEV_SETUP_STREAM(uart0_putc_wrap, uart0_getc_wrap, _FDEV_SETUP_RW);
 FILE uart3_out = FDEV_SETUP_STREAM(uart3_putc_wrap, NULL, _FDEV_SETUP_WRITE);
 #endif /* _UART_WRAP_H_ */
--- a/tooling/format-code.sh
+++ b/tooling/format-code.sh
@ -13,15 +13,13 @@ then
    exit 1
 fi
-# 
+#
 for FILE in "$@"
 do
    RESULT="$(astyle    --style=1tbs \
                        --indent-col1-comments \
                        --break-blocks \
                        --pad-oper \
                        --pad-header \
                        --delete-empty-lines \
                        --add-brackets \
                        --convert-tabs \
                        --max-code-length=80 \
--- a/tooling/package-and-deliver.sh
+++ b/tooling/package-and-deliver.sh
@ -1,51 +0,0 @@
 #!/bin/bash
 echo "Test project build"
 make clean && make
 if [ $? -ne 0 ] ; then
    echo "Build failed!"
    exit 1
 else
    echo "Build OK!"
 fi
 echo "Format code"
 make format
 # Test if there are changed files that are not commited
 if [ -n "$(git status --porcelain)" ] ; then
    echo "Uncommited files detected"
    git status
    exit 1
 else
    echo "OK"
 fi
 echo "Currently set tags on this project"
 git tag
 echo -n "Are the required tags added? (Y/n)"
 read ANSWER
 if [ "$ANSWER" == "n" ]; then
    echo "Please add required tags"
    exit 1
 fi
 echo "Packaging the project"
 make clean && make
 TEMP_DIR=$(mktemp -d)
 cp bin/atmega2560-user-code.ihx $TEMP_DIR
 make clean
 git archive --format=tar.gz -o $TEMP_DIR/$(git describe --abbrev=6 --dirty --always --tags --long).tar.gz HEAD
 mv $TEMP_DIR/* bin/
 rm -rf $TEMP_DIR
 echo "Project packaging succeeded"
 exit 0
Author	SHA1	Message	Date
Arti Zirk	4d89cbfd84	remove debug code	2016-12-02 13:22:51 +02:00
Arti Zirk	e991f970a8	lab05 ready	2016-12-01 16:19:28 +02:00
Arti Zirk	6efb7921ff	Merge branch 'master' of https://gitlab.com/I237-2016/skeleton	2016-12-01 14:41:42 +02:00
Arti Zirk	dbd9c35dc4	Fix	2016-12-01 14:40:57 +02:00
Arti Zirk	2706180dac	Move some declarations to hmi_msg.c file	2016-12-01 14:39:17 +02:00
Arti Zirk	f1fe589942	Fix lab04 based on feedback	2016-12-01 14:38:58 +02:00
Silver Kits	d6fdf0ac12	Change microrl library configuration to be suitable for student labs	2016-11-21 10:28:23 +02:00
Silver Kits	6fa1c472b1	Fix microrl compile error: lib/helius_microrl/microrl.c:476:22: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]	2016-11-21 10:26:55 +02:00
Silver Kits	a4b86db84a	Add micro read line library from https://github.com/Helius/microrl	2016-11-21 10:23:27 +02:00
Arti Zirk	04031523d4	Style fixes and added some comments	2016-11-20 00:51:04 +02:00
Arti Zirk	f3676e9408	Merge branch 'master' of https://gitlab.com/I237-2016/skeleton	2016-11-20 00:15:30 +02:00
Silver Kits	256059d358	Rename all files in doc directory to lower case to avoid problems in case-insensitive and case-aware file systems.	2016-11-19 12:43:54 +02:00
Silver Kits	55ed13b805	Add LCD Keypad shield placement image	2016-11-19 12:30:47 +02:00
Silver Kits	861f0c57d8	Fix USB-UART wiring table mistake pointed out by Liina	2016-11-19 12:30:22 +02:00
Arti Zirk	30bd26d471	Add heartbeat and system time	2016-11-07 02:30:33 +02:00
Arti Zirk	22461eaff4	Async uart	2016-11-07 01:42:18 +02:00
Arti Zirk	6635f07e8d	Merge branch 'make-install-warning' of https://gitlab.com/artizirk/skeleton	2016-11-06 20:57:16 +02:00
Arti Zirk	39a457b101	Error out from make install if ARDUINO env var is unset	2016-11-06 20:37:15 +02:00
Arti Zirk	079a8ff367	Merge branch 'master' of https://gitlab.com/I237-2016/skeleton	2016-11-06 18:52:37 +02:00
Silver Kits	8b7377dff3	Add interrupt driven UART library from https://github.com/andygock/avr-uart	2016-10-31 20:13:51 +02:00
Silver Kits	51e4a8bc9b	Enable to use main() without return value	2016-10-31 19:52:30 +02:00
Arti Zirk	9e46b92744	Constants shouldn't be uppercase	2016-10-24 16:08:34 +03:00
Arti Zirk	500c36b81b	Last fixes for lab03.2	2016-10-24 00:01:26 +03:00
Arti Zirk	9d5fff9fa0	Better final version of lab03.2	2016-10-23 22:58:24 +03:00
Arti Zirk	f72a7b33e0	Final version of lab03.2	2016-10-23 22:49:49 +03:00
Arti Zirk	1fad6de2e1	Even lower memory usage	2016-10-23 22:11:20 +03:00
Arti Zirk	14a6e4ff91	Merge Silvers Makefile changes	2016-10-22 01:36:04 +02:00
Silver Kits	281d4d72c5	Format only .c files in source directory with make format	2016-10-22 01:35:04 +02:00
Silver Kits	2ea46d4402	Format only .c files in source directory with make format	2016-10-21 13:48:22 +03:00
Silver Kits	e6888bd251	Add LTO and unused data/functions optimisations suggested by Arti	2016-10-21 13:40:53 +03:00
Arti Zirk	89b7339775	Enable Link Time Optimization and function garbage collection	2016-10-19 22:27:25 +02:00
Arti Zirk	adc3ad6a4a	Merge https://gitlab.com/I237-2016/skeleton	2016-10-19 21:53:05 +02:00
Arti Zirk	f4c572a2e6	Change formating script	2016-10-19 21:51:12 +02:00
Silver Kits	de62693b6d	Add make size target. This target can be used to print firmware memory usage in AVR format	2016-10-11 12:08:53 +03:00
Arti Zirk	25b1feb71d	make format	2016-10-11 00:43:31 +03:00
Arti Zirk	39720c676e	Looks like working lab03.2 code	2016-10-10 22:24:33 +03:00
Arti Zirk	a836b3a624	Remove executable bit from lcd library	2016-10-10 20:33:24 +03:00
Arti Zirk	51fc127b48	Merge https://gitlab.com/I237-2016/skeleton	2016-10-10 20:29:47 +03:00
Arti Zirk	be366ed50e	Apparently ignoring letter case is a bug	2016-10-10 20:25:13 +03:00
Silver Kits	40c0ac6888	Fix 1602 LCD wiring document	2016-10-10 16:28:38 +03:00
Silver Kits	8ee4b59b24	Merge branch 'revert-fabda262' into 'master' Revert "Merge branch 'master' into 'master'" This reverts merge request !1 Does not work on OS X: ``` fatal: could not create archive file '/lab03.1-23-g3452f1.tar.gz': Permission denied mv: rename /1 to bin/1: Permission denied mv: rename /Applications to bin/Applications: Permission denied mv: rename /Library to bin/Library: Permission denied mv: rename /Network to bin/Network: Permission denied mv: rename /System to bin/System: Permission denied mv: rename /Users to bin/Users: Permission denied mv: rename /Volumes to bin/Volumes: Permission denied mv: rename /bin to bin/bin: Permission denied mv: rename /cores to bin/cores: Permission denied mv: rename /dev to bin/dev: Permission denied mv: rename /etc to bin/etc: Permission denied mv: rename /home to bin/home: Permission denied mv: rename /installer.failurerequests to bin/installer.failurerequests: Permission denied mv: rename /net to bin/net: Permission denied mv: rename /opt to bin/opt: Permission denied mv: rename /private to bin/private: Permission denied mv: rename /sbin to bin/sbin: Permission denied mv: rename /tmp to bin/tmp: Permission denied mv: rename /usr to bin/usr: Permission denied mv: rename /var to bin/var: Permission denied Projekti pakendamine 6nnestus ``` See merge request !2	2016-10-10 09:06:28 +00:00
Silver Kits	b8338339aa	Revert "Merge branch 'master' into 'master'" This reverts merge request !1	2016-10-10 09:05:23 +00:00
Silver Kits	82554947db	Fix hd44780.h	2016-10-10 11:53:22 +03:00
Silver Kits	fabda26208	Merge branch 'master' into 'master' Lisasin package and delivery scripti Martin Nõukas Rühm D23 See merge request !1	2016-10-10 08:49:57 +00:00
Silver Kits	1613198bc3	Add 1602 LCD keypad shield wiring and fix USB-UART wiring	2016-10-10 11:45:39 +03:00
Silver Kits	6dac14ab59	Fix hd44780 formatting and add modifications descriptions to files headers	2016-10-10 11:44:30 +03:00
Silver Kits	51951fcea1	Fix and change hd44780 LCD row and col positions	2016-10-10 11:34:43 +03:00
Silver Kits	4b3ada594b	Add function to clear screen only starting from given position to given length	2016-10-04 22:03:41 +03:00
Silver Kits	2f5451d76e	Amend lcd_goto() to be safe and not move cursor outside of screen limits and add screen positions definitions	2016-10-04 22:00:20 +03:00
Silver Kits	0825cd2f44	Add Arduino 1602LCD Shield settings and LCD lib usage to the project	2016-10-04 21:56:44 +03:00
Silver Kits	aec36f1ae2	Fix LCD lib include paths and header file	2016-10-04 21:52:54 +03:00
Silver Kits	801f825c6b	Add LCD1602 library from http://community.atmel.com/projects/hd44780-library	2016-10-04 21:42:04 +03:00
Arti Zirk	8b64aca736	Fix	2016-10-02 21:28:15 +03:00
Arti Zirk	aa4e954f76	Add language to code snippets in readme	2016-10-02 21:27:32 +03:00
Arti Zirk	275cf9fa28	Add readme	2016-10-02 21:23:35 +03:00
MartinezEst	4f41814558	PackAndDeliverBashValmis	2016-09-19 16:23:20 +03:00