117 lines
2.9 KiB
C
117 lines
2.9 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <avr/io.h>
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#include <avr/pgmspace.h>
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#include <avr/interrupt.h>
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#include <util/atomic.h>
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#include <util/delay.h>
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#include "hmi_msg.h"
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#include "uart-wrapper.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/andygock_avr-uart/uart.h"
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#define BAUD 9600
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#define BLINK_DELAY_MS 100
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volatile uint32_t time;
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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 void hw_init() {
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DDRA |= _BV(DDA3); // setup Arduino pin 25 as output
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uart0_init(UART_BAUD_SELECT(BAUD, F_CPU));
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uart3_init(UART_BAUD_SELECT(BAUD, F_CPU));
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init_system_clock();
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sei(); // Enable interupts
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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_clrscr();
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}
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static inline void print_prog_version() {
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fprintf_P(stderr, PSTR(PROG_VERSION),
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PSTR(GIT_DESCR), PSTR(__DATE__), PSTR(__TIME__));
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fprintf_P(stderr, PSTR(LIBC_VERSION), PSTR(__AVR_LIBC_VERSION_STRING__));
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}
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static inline void print_program_startup() {
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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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/* ASCII table print */
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print_ascii_tbl(stdout);
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unsigned char ascii[128];
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for (unsigned char i = 0; i < sizeof(ascii); i++) {
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ascii[i] = i;
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}
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print_for_human(stdout, ascii, sizeof(ascii));
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fprintf_P(stdout, PSTR(GET_MONTH_MSG));
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}
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static inline void search_month() {
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/* Month search and print */
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char letter;
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fscanf(stdin, "%c", &letter);
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fprintf(stdout, "%c\n", letter);
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lcd_goto(0x40); /* Got to the beginning of the next line */
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for (int i = 0; i < 6; i++) {
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if (!strncmp_P(&letter, (PGM_P)pgm_read_word(&months[i]), 1)) {
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fprintf_P(stdout, (PGM_P)pgm_read_word(&months[i]));
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fputc('\n', stdout);
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lcd_puts_P((PGM_P)pgm_read_word(&months[i]));
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lcd_putc(' ');
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}
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}
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fprintf_P(stdout, PSTR(GET_MONTH_MSG));
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lcd_puts_P(PSTR(" ")); /* Clear the end of the line */
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}
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static inline void heartbeat() {
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static uint32_t last_time;
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uint32_t cur_time;
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ATOMIC_BLOCK(ATOMIC_FORCEON) {
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cur_time = time;
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}
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if ((last_time - cur_time) > 0) {
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// Toggle led on arduino pin 25
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PORTA ^= _BV(PORTA3);
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fprintf_P(stderr, PSTR(UPTIME "\n"), cur_time);
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}
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last_time = cur_time;
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}
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int main (void)
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{
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hw_init();
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print_prog_version();
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print_program_startup();
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while (1) {
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heartbeat();
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if(uart0_available()) {
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search_month();
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}
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}
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}
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/* System clock ISR */
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ISR(TIMER5_COMPA_vect)
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{
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time++;
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}
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