150 lines
3.1 KiB
C
150 lines
3.1 KiB
C
/*
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* AtTiny_alarm_clock.c
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*
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* Created: 16.07.2018 13:55:13
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* Author : dozed
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*/
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#include <avr/io.h>
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#include <avr/interrupt.h>
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#include <stdlib.h>
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#include "lcd4.h"
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#define butt1 0
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#define butt2 1
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#define butt3 2
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typedef enum {CLOCK_INIT = 0, CLOCK_IDLE, CLOCK_ALARM, CLOCK_STOPWATCH_RUNNING, CLOCK_STOPWATCH_STOPPED, CLOCK_STOPWATCH_NOT_SET, CLOCK_USER_INPUT, CLOCK_SET_TIME} clock_state_e;
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clock_state_e clock_old_state;
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clock_state_e clock_state = CLOCK_INIT;
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clock_state_e clock_new_state = CLOCK_INIT;
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uint8_t t1[] = {' ','H','a','l','l','o','_','_','_','_','_','_','_','_','_','_','_'};
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int counter = 0;
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uint8_t flags;
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int clock_state_changed = 0;
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int update_display = 1;
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ISR (TIMER1_OVF_vect) // Timer1 ISR
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{
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//counter++;
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TCNT1 = 63974;
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}
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int main(void)
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{
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DDRD = 0x00;
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TCNT1 = 63974; // for 1 sec at 16 MHz
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TCCR1A = 0x00;
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TCCR1B = (1<<CS10) | (1<<CS12);; // Timer mode with 1024 prescaler
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TIMSK = (1 << TOIE1) ; // Enable timer1 overflow interrupt(TOIE1)
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sei(); // Enable global interrupts by setting global interrupt enable bit in SREG
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/* Replace with your application code */
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while (1)
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{
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if(clock_state != clock_new_state){
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clock_state = clock_new_state;
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clock_state_changed = 1;
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update_display = 1;
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}
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else {
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clock_state_changed = 0;
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}
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switch(clock_state){
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case CLOCK_INIT:
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//do some init stuff...
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lcd_init();
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lcd_5ms();
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lcd_instruct(lcd_DISPLAY_CLEAR);
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//INIT done -> change to IDLE
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clock_new_state = CLOCK_IDLE;
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break;
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case CLOCK_IDLE:
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//IDLE MODE
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//print the IDLE Screen
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if(update_display){
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lcd_5ms();
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lcd_write_text(0,0,(uint8_t []){'_','_','_','_','_','_','t','i','m','e','_','_','_','_','_','_'});
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lcd_5ms();
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lcd_write_text(1,0,(uint8_t []){' ',' ',' ',' ',' ',' ','t','i','m','e',' ',' ',' ',' ',' ',' '});
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update_display = 0;
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}
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if(button_clicked(butt1)){
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clock_new_state = CLOCK_ALARM;
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}
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else if(button_clicked(butt2)){
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counter += 2;
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}
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else if(button_clicked(butt3)){
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counter += 3;
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}
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t1[0] = counter + 48;
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break;
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case CLOCK_ALARM:
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//ALARM setup Mode
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//print the ALARM screen
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if(update_display){
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lcd_write_text(0,0,(uint8_t []){' ',' ','[','a','l','a','r','m',' ','t','i','m','e',']',' ',' '});
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lcd_write_text(1,0,(uint8_t []){' ',' ',' ',' ',' ','a','l','a','r','m',' ','>',' ',' ',' ',' '});
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update_display = 0;
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}
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break;
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}
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}
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}
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void lcd_write_text(int row, int col, uint8_t text[])
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{
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switch(row){
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case 0:
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row = line1;
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break;
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case 1:
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row = line2;
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break;
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}
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for(int i=0;i<=15;i++){
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if(text[i] != 0x5F){
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lcd_write(row, text[i], 0+i);
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}
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lcd_5ms();
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}
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}
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int button_clicked(int button)
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{
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if(((PIND & 0x03) == button+1) != ((flags & (1<<button))>0)){
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//if the pin is not equal to the stored state -> was pressed or released
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//check is the button has been pressed or released
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if((PIND & 0x03) == button+1){
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//button is high -> pressed
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flags |= (1<<button); //set bit
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return(1);
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}
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else{
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//button is low -> released
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flags &= ~(1<<button); //delete bit
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return(0);
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}
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}
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return(0);
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}
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