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/********
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* This file is part of Tooltron.
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*
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* Tooltron is free software: you can redistribute it and/or modify
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* it under the terms of the Lesser GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Tooltron is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* Lesser GNU General Public License for more details.
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* You should have received a copy of the Lesser GNU General Public License
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* along with Tooltron. If not, see <http://www.gnu.org/licenses/>.
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*
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* Copyright 2009 Kevin Woo <kwoo@2ndt.com>
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*
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********/
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#include <util/delay.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 "timer.h" |
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#include "packet.h" |
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/***** Keypad definitions ******/
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/** @brief ROW1 of the keypad */
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#define ROW4 (_BV(PB0))
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/** @brief ROW2 of the keypad */
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#define ROW3 (_BV(PB1))
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/** @brief ROW3 of the keypad */
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#define ROW2 (_BV(PB2))
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/** @brief ROW4 of the keypad */
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#define ROW1 (_BV(PB3))
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/** @brief COL1 of the keypad */
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#define COL4 (_BV(PB4))
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/** @brief COL2 of the keypad */
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#define COL3 (_BV(PB5))
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/** @brief COL3 of the keypad */
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#define COL2 (_BV(PB6))
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/** @brief COL4 of the keypad */
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#define COL1 (_BV(PB7))
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/***** LED definitions *****/
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#define LED_RED (_BV(PC5))
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#define LED_YELLOW (_BV(PC4))
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#define LED_GREEN (_BV(PC3))
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#define LED_PORT PORTC
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#define ADDR 2 |
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/***** Global variables *****/
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void init_pins(void) { |
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DDRB = 0;
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PORTB = (COL1|COL2|COL3|COL4); |
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DDRC |= LED_RED | LED_YELLOW | LED_GREEN; |
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LED_PORT |= LED_RED | LED_GREEN | LED_YELLOW; |
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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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// Row 1 Strobe
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DDRB = (ROW1); |
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PORTB = (COL1|COL2|COL3|COL4); |
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if(!(PINB&(COL1)))
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ret ='1';
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else if(!(PINB&(COL2))) |
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ret ='2';
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else if(!(PINB&(COL3))) |
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ret ='3';
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else if(!(PINB&(COL4))) |
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ret ='A';
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else {
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DDRB = (ROW2); |
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PORTB = (COL1|COL2|COL3|COL4); |
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// Row 2 Strobe
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if(!(PINB&(COL1)))
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ret ='4';
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else if(!(PINB&(COL2))) |
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ret ='5';
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else if(!(PINB&(COL3))) |
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ret ='6';
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else if(!(PINB&(COL4))) |
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ret ='B';
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else {
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// Row 3 Strobe
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DDRB = (ROW3); |
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PORTB = (COL1|COL2|COL3|COL4); |
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if(!(PINB&(COL1)))
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ret ='7';
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else if(!(PINB&(COL2))) |
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ret ='8';
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else if(!(PINB&(COL3))) |
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ret ='9';
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else if(!(PINB&(COL4))) |
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ret ='C';
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else{
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// Row 4 Strobe
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DDRB = (ROW4); |
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PORTB = (COL1|COL2|COL3|COL4); |
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if(!(PINB&(COL1)))
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ret ='*';
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else if(!(PINB&(COL2))) |
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ret ='0';
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else if(!(PINB&(COL3))) |
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ret ='#';
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else if(!(PINB&(COL4))) |
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ret ='D';
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} |
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} |
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} |
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DDRB = 0;
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PORTB = (COL1|COL2|COL3|COL4); |
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return ret;
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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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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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while(1) { |
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toggle_led(LED_GREEN, ON); |
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send_packet(TT_TIMEOUT, ADDR); |
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_delay_ms(100);
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toggle_led(LED_GREEN, OFF); |
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_delay_ms(100);
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} |
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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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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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else if(resp != TT_BAD){ |
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toggle_led(LED_RED, ON); |
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while(1); |
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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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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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break;
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case send:
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if (get_timeout_flag() == 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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toggle_led(LED_GREEN, ON); |
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} |
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else {
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toggle_led(LED_RED, ON); |
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} |
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_delay_ms(1000);
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toggle_led(LED_RED, OFF); |
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toggle_led(LED_GREEN, ON); |
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state = req; |
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break;
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} |
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} |
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return 0; |
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} |