135 lines
2.7 KiB
C
135 lines
2.7 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <util/atomic.h>
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#include <avr/io.h>
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#include <avr/interrupt.h>
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#include <avr/pgmspace.h>
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#include <util/delay.h>
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#include "hmi_msg.h"
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#include "../lib/andygock_avr-uart/uart.h"
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#include "uart_wrap.h"
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#include "print_helper.h"
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#include "../lib/hd44780_111/hd44780.h"
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#include "../lib/helius_microrl/microrl.h"
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#include "cli_microrl.h"
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#include "../lib/matejx_avr_lib/mfrc522.h"
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#define BAUDRATE 9600
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// For configuring arduino mega pin 25
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#define LED_INIT DDRA |= _BV(DDA3);
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#define LED_TOGGLE PORTA ^= _BV(PORTA3)
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#define UART_STATUS_MASK 0x00FF
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// Current system time
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volatile uint32_t system_time;
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// Create microrl object and pointer on it
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static microrl_t rl;
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static microrl_t *prl = &rl;
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static inline void init_system_clock(void)
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{
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TCCR5A = 0; // Clear control register A
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TCCR5B = 0; // Clear control register B
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TCCR5B |= _BV(WGM52) | _BV(CS52); // CTC and fCPU/256
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OCR5A = 62549; // 1 s
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TIMSK5 |= _BV(OCIE5A); // Output Compare A Match Interrupt Enable
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}
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static inline uint32_t time(void)
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{
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uint32_t cur_time;
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ATOMIC_BLOCK(ATOMIC_FORCEON) {
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cur_time = system_time;
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}
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return cur_time;
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}
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static inline void init_rfid_reader(void)
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{
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MFRC522_init();
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PCD_Init();
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}
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static inline void init_hw (void)
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{
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// IO init
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/// Set arduino pin 25 as output
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LED_INIT;
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// System clock
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init_system_clock();
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// UART init
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uart0_init(UART_BAUD_SELECT(BAUDRATE, F_CPU));
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uart3_init(UART_BAUD_SELECT(BAUDRATE, F_CPU));
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stdout = stdin = &uart0_io;
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stderr = &uart3_out;
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// LCD init
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lcd_init();
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lcd_clrscr();
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// Init RFID-RC522
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init_rfid_reader();
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// Enable interupts
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sei();
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}
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static inline void start_ui (void)
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{
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print_version(stderr);
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// print student name
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fprintf_P(stdout, PSTR(STUD_NAME));
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fputc('\n', stdout); // Add a new line to the uart printout
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lcd_puts_P(PSTR(STUD_NAME));
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}
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static inline void start_cli(void)
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{
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// Call init with ptr to microrl instance and print callback
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microrl_init (prl, cli_print);
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// Set callback for execute
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microrl_set_execute_callback (prl, cli_execute);
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}
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static inline void heartbeat (void)
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{
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static uint32_t time_prev;
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uint32_t time_cur = time();
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if (time_cur <= time_prev) {
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return;
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}
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time_prev = time_cur;
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fprintf_P(stderr, PSTR(UPTIME_MSG "\n"), time_cur);
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LED_TOGGLE;
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}
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int main (void)
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{
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init_hw();
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start_ui();
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start_cli();
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while (1) {
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heartbeat();
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// CLI commands are handled in cli_execute()
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microrl_insert_char (prl, cli_get_char());
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}
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}
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// System clock
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ISR(TIMER5_COMPA_vect)
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{
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system_time++;
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}
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