Revision 211 trunk/cardbox/main.c
| main.c (revision 211) | ||
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* |
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********/ |
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#include <util/delay.h> |
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#include "uart.h" |
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#include "rs485_int.h" |
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#include <avr/interrupt.h> |
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#include <avr/io.h> |
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#include "tooltron.h" |
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#include <tooltron.h> |
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#include "timer.h" |
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/***** Keypad definitions ******/ |
| ... | ... | |
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#define LED_YELLOW (_BV(PC4)) |
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#define LED_GREEN (_BV(PC3)) |
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#define ADDR 2 |
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/***** Global variables *****/ |
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| ... | ... | |
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return; |
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} |
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/** |
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* @brief Sets the LED to the specified state |
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* |
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* This sets LED which to the specified state. You can use this to set |
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* multiple LEDs if you OR the LEDs desired into the which argument. |
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* |
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* @param which The LEDs to set |
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* @parma state The state ON or OFF to set to the LEDs to |
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* @return void |
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*/ |
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void toggle_led(uint8_t which, uint8_t state) {
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if (state == ON) {
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LED_PORT &= ~(which); |
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} else {
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LED_PORT |= (which); |
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} |
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} |
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char get_button(void) {
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char ret = ' '; |
| ... | ... | |
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return ret; |
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} |
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int main(void) |
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{
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typedef enum {
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req, |
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press, |
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send, |
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rsp |
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} state_t; |
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char c; |
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serial_init(BAUD9600); |
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int main(void) {
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uint8_t mbuf[PROGD_PACKET_SIZE]; |
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uint8_t resp; |
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uint8_t c; |
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state_t state = req; |
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rs485_init(BAUD9600); |
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init_pins(); |
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init_timer(); |
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sei(); |
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while(1) |
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{
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while(1) {
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PORTC |= LED_RED | LED_GREEN | LED_YELLOW; |
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//wait for key request from server |
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while(serial_getchar()!=TT_GET_KEY); |
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switch(state) {
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case req: |
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toggle_led(LED_RED|LED_GREEN|LED_YELLOW, OFF); |
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// Wait for a packet |
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resp = parse_packet(mbuf, ADDR); |
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PORTC &=~LED_YELLOW; |
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reset_timer(); |
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reset_timeout_flag(); |
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start_timer(); |
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if (resp == TT_GET_KEY) {
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toggle_led(LED_YELLOW, ON); |
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reset_timer(); |
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reset_timeout_flag(); |
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start_timer(); |
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c = ' '; |
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state = press; |
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} |
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break; |
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case press: |
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c = get_button(); |
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c = ' '; |
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serial_disable_rx(); |
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while(c ==' ') {
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if (seconds > TIMEOUT_SECONDS) {
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set_timeout_flag(); |
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serial_putchar(TT_TIMEOUT); |
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serial_enable_rx(); |
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break; |
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} |
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if (seconds > TIMEOUT_SECONDS) {
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set_timeout_flag(); |
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state = send; |
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} else if (c != ' ') {
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state = send; |
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} |
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c = get_button(); |
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_delay_ms(100); |
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} |
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serial_enable_rx(); |
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break; |
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case send: |
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if (timeoutflag == 1) {
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send_packet(TT_TIMEOUT, ADDR); |
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state = req; |
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} else {
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send_packet_data(TT_SEND_KEY, ADDR, &c, 1); |
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} |
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state = rsp; |
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break; |
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case rsp: |
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resp = parse_packet(mbuf, ADDR); |
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if (resp == TT_ACK |
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if (timeout_flag == 0) {
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//respond with key pressed |
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serial_putchar(c); |
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uart_send_byte(c); |
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//wait for response |
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c=0; |
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reset_timeout_flag(); |
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reset_timer(); |
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while(!c && seconds < TIMEOUT_SECONDS) |
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c = serial_getchar_nb(); |
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while((uart_get_byte(&c) < 0) && (seconds < TIMEOUT_SECONDS)); |
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PORTC |= LED_YELLOW; |
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