1 | /*---------------------------------------------------------------------------------------------------------------------------------------------------
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2 | * main.c - Ir-einschalter mit AtTiny2313 mit IRMP
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3 | *
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4 | * ATTINY2313 @ 8 MHz
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5 | *
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6 | * Fuses: lfuse: 0xE4 hfuse: 0xDF efuse: 0xFF
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7 | *
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8 | * This program is free software; you can redistribute it and/or modify
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9 | * it under the terms of the GNU General Public License as published by
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10 | * the Free Software Foundation; either version 2 of the License, or
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11 | * (at your option) any later version.
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12 | *---------------------------------------------------------------------------------------------------------------------------------------------------
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13 | */
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14 |
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15 | #include <inttypes.h>
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16 | #include <avr/io.h>
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17 | #include <util/delay.h>
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18 | #include <avr/pgmspace.h>
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19 | #include <avr/interrupt.h>
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20 | #include "irmp.h"
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21 | #include "irmpconfig.h"
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22 | #include "avr/eeprom.h"
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23 |
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24 | #ifndef F_CPU
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25 | #error F_CPU unkown
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26 | #endif
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27 |
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28 | // Defines fuer den Taster-Input
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29 | #define Taster_PORT PORTB
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30 | #define Taster_DDR DDRB
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31 | #define Taster_PIN PINB
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32 | #define Taster_BIT 2 // use PB2 as Taster on AVR
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33 | // Defines fuer die LED
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34 | #define Led_PORT PORTB
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35 | #define Led_DDR DDRB
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36 | #define Led_PIN PINB
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37 | #define Led_BIT 0 // use PB0 as Taster on AVR
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38 | // Defines fuer den Schaltausgang
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39 | #define Schalt_PORT PORTB
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40 | #define Schalt_DDR DDRB
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41 | #define Schalt_PIN PINB
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42 | #define Schalt_BIT 1 // use PB1 as Taster on AVR
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43 | // EEPROM Variablen anlegen
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44 | uint16_t Ziel_Command EEMEM = 12345;
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45 | uint8_t CodeErlernt EEMEM = 0;
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46 |
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47 | void timer_init(void) {
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48 | OCR1A = (F_CPU / F_INTERRUPTS) - 1; // compare value: 1/10000 of CPU frequency
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49 | TCCR1B = (1 << WGM12) | (1 << CS10); // switch CTC Mode on, set prescaler to 1
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50 | TIMSK = 1 << OCIE1A; // OCIE1A: Interrupt by timer compare
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51 | }
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52 |
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53 | /*---------------------------------------------------------------------------------------------------------------------------------------------------
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54 | * timer 1 compare handler, called every 1/10000 sec
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55 | *---------------------------------------------------------------------------------------------------------------------------------------------------
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56 | */
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57 | // Timer 1 output compare A interrupt service routine
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58 | ISR(TIMER1_COMPA_vect)
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59 | {
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60 | (void) irmp_ISR(); // call irmp ISR
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61 | }
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62 |
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63 | /*---------------------------------------------------------------------------------------------------------------------------------------------------
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64 | * Hilfsroutinen
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65 | *---------------------------------------------------------------------------------------------------------------------------------------------------
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66 | */
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67 |
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68 | uint8_t key_pressed(const volatile uint8_t *inputreg, uint8_t inputbit) {
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69 | static uint8_t last_state = 0;
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70 |
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71 | if (last_state == !(*inputreg & (1 << inputbit))) {
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72 | return 0; /* keine Änderung */
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73 | }
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74 |
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75 | /* Wenn doch, warten bis etwaiges Prellen vorbei ist: */
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76 | _delay_ms(20);
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77 |
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78 | /* Zustand für nächsten Aufruf merken: */
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79 | last_state = !(*inputreg & (1 << inputbit));
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80 |
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81 | /* und den entprellten Tastendruck zurückgeben: */
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82 | return !(*inputreg & (1 << inputbit));
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83 | }
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84 |
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85 | /*---------------------------------------------------------------------------------------------------------------------------------------------------
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86 | * MAIN: main routine
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87 | *---------------------------------------------------------------------------------------------------------------------------------------------------
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88 | */
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89 | int main(void) {
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90 | IRMP_DATA irmp_data;
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91 | char learning = 0;
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92 | char learned = eeprom_read_byte(&CodeErlernt);
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93 | uint16_t zielCommandSram = eeprom_read_word(&Ziel_Command);
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94 |
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95 | // Setzen der DatenRichtungsRegister
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96 | Led_DDR |= (1 << Led_BIT);
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97 | Schalt_DDR |= (1 << Schalt_BIT);
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98 |
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99 | irmp_init(); // initialize rc5
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100 | timer_init(); // initialize timer
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101 | sei (); // enable interrupts
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102 |
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103 | for (;;) {
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104 | if (key_pressed(&Taster_PIN, Taster_BIT)) {
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105 | learning = 1; // setzen der learning Variable
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106 | Led_PORT |= (1 << Led_BIT); // Einschalten der learning Led
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107 | }
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108 |
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109 | if (learning && irmp_get_data(&irmp_data)) {
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110 | // Speichern des IR-Codes im eeprom
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111 | zielCommandSram = irmp_data.command;
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112 | eeprom_write_word(&Ziel_Command, zielCommandSram);
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113 | Led_PORT &= ~(1 << Led_BIT); // Ausschalten der learning Led
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114 | learning = 0;
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115 | learned = 1;
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116 | eeprom_write_byte(&CodeErlernt, learned);
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117 | }
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118 |
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119 | if (learned && irmp_get_data(&irmp_data)) {
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120 | // Vergleichen des IR-Codes mit dem im eeprom
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121 | if (irmp_data.command == zielCommandSram) {
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122 | //Einschalten des Schaltports fuer 500ms
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123 | Schalt_PORT |= (1 << Schalt_BIT); // Einschalten des Schaltausgangs
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124 | Led_PORT |= (1 << Led_BIT); // Einschalten der Led
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125 | _delay_ms(500);
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126 | Schalt_PORT &= ~(1 << Schalt_BIT); // Ausschalten des Schaltausgangs
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127 | Led_PORT &= ~(1 << Led_BIT); // Ausschalten der Led
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128 |
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129 | } //else {
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130 | //Led_PORT |= (1 << Led_BIT); // Einschalten der Led
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131 | //_delay_ms(100);
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132 | //Led_PORT &= ~(1 << Led_BIT); // Ausschalten der Led
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133 |
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134 | //}
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135 | }
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136 | }
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137 | }
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