main.c

   1 /*---------------------------------------------------------------------------------------------------------------------------------------------------
   2  * main.c - demo main module to test irmp decoder
   3  *
   4  * Copyright (c) 2009-2010 Frank Meyer - frank(at)fli4l.de
   5  *
   6  * $Id: main.c,v 1.5 2010/03/29 09:33:29 fm Exp $
   7  *
   8  * ATMEGA88 @ 8 MHz
   9  *
  10  * Fuses: lfuse: 0xE2 hfuse: 0xDC efuse: 0xF9
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *---------------------------------------------------------------------------------------------------------------------------------------------------
  17  */
  18
  19 /*---------------------------------------------------------------------------------------------------------------------------------------------------
  20  * uncomment this for codevision compiler:
  21  *---------------------------------------------------------------------------------------------------------------------------------------------------
  22  */
  23 // #define CODEVISION                                                   // to use Codevision Compiler instead of gcc
  24
  25 #ifdef CODEVISION
  26 #include <mega88.h>
  27 #include <stdio.h>
  28 #define uint8_t     unsigned char
  29 #define uint16_t    unsigned int
  30 #define F_CPU       8000000            // change for Codevision here, if you use WinAVR, use Project -> Configuration Options instead
  31
  32 // register values from datasheet for ATMega88
  33 #define OCIE1A      1
  34 #define WGM12       3
  35 #define CS10        0
  36 #define UDRE0       5
  37 #define TXEN0       3
  38
  39 #include "irmp.h"
  40 #include "irmp.c"
  41
  42 #else // gcc compiler
  43
  44 #include <inttypes.h>
  45 #include <avr/io.h>
  46 #include <util/delay.h>
  47 #include <avr/pgmspace.h>
  48 #include <avr/interrupt.h>
  49 #include "irmp.h"
  50 #include "irmpconfig.h"
  51
  52
  53 #endif  // CODEVISION
  54
  55
  56 #ifndef F_CPU
  57 #error F_CPU unkown
  58 #endif
  59
  60 void
  61 timer_init (void)
  62 {
  63 #ifdef CODEVISION
  64   OCR1AH  = ((F_CPU / F_INTERRUPTS) >> 8) & 0xFF;                           // compare value: 1/10000 of CPU frequency (upper byte)
  65   OCR1AL  = ((F_CPU / F_INTERRUPTS) - 1)  & 0xFF;                           // compare value: 1/10000 of CPU frequency (lower byte)
  66 #else  // gcc
  67   OCR1A   =  (F_CPU / F_INTERRUPTS) - 1;                                    // compare value: 1/10000 of CPU frequency
  68 #endif  // CODEVISION
  69   TCCR1B  = (1 << WGM12) | (1 << CS10);                                     // switch CTC Mode on, set prescaler to 1
  70
  71 #if defined (__AVR_ATmega8__) || defined (__AVR_ATmega16__) || defined (__AVR_ATmega32__) || defined (__AVR_ATmega64__) || defined (__AVR_ATmega162__)
  72   TIMSK  = 1 << OCIE1A;                                                     // OCIE1A: Interrupt by timer compare
  73 #else
  74   TIMSK1  = 1 << OCIE1A;                                                    // OCIE1A: Interrupt by timer compare
  75 #endif  // __AVR...
  76 }
  77
  78 /*---------------------------------------------------------------------------------------------------------------------------------------------------
  79  * timer 1 compare handler, called every 1/10000 sec
  80  *---------------------------------------------------------------------------------------------------------------------------------------------------
  81  */
  82 // Timer 1 output compare A interrupt service routine
  83 #ifdef CODEVISION
  84 interrupt [TIM1_COMPA] void timer1_compa_isr(void)
  85 #else  // CODEVISION
  86 ISR(TIMER1_COMPA_vect)
  87 #endif  // CODEVISION
  88 {
  89   irmp_ISR();                                                           // call irmp ISR
  90   // call other timer interrupt routines...
  91 }
  92
  93 /*---------------------------------------------------------------------------------------------------------------------------------------------------
  94  * MAIN: main routine
  95  *---------------------------------------------------------------------------------------------------------------------------------------------------
  96  */
  97 #ifdef CODEVISION
  98 // This is the main routine if you use Codevision C Compiler
  99 void
 100 main (void)
 101 {
 102   IRMP_DATA irmp_data;
 103
 104   #pragma optsize-
 105   // crystal oscillator division factor: 1
 106   CLKPR=0x80;
 107   CLKPR=0x00;
 108   #ifdef _OPTIMIZE_SIZE_
 109   #pragma optsize+
 110   #endif
 111   static uint8_t *Proto[]={"SIRCS","NEC","SAMSUNG","MATSUSH","KASEIKYO","RECS80","RC5(x)","DENON","RC6","SAMSG32","APPLE"};
 112   #define IRMP_APPLE_ADDRESS 0x77E1
 113
 114
 115   #if IRMP_LOGGING == 0
 116   // USART initialization has to be done here if Logging is off
 117   // Communication Parameters: 8 Data, 1 Stop, No Parity
 118   // USART Receiver: Off
 119   // USART Transmitter: On
 120   // USART0 Mode: Asynchronous
 121   // USART Baud Rate: 9600
 122   #define BAUDRATE 9600L
 123   UCSR0A=0x00;
 124   UCSR0B=0x08;
 125   UCSR0C=0x06;
 126   UBRR0H = ((F_CPU+BAUDRATE*8)/(BAUDRATE*16)-1) >> 8;            // store baudrate (upper byte)
 127   UBRR0L = ((F_CPU+BAUDRATE*8)/(BAUDRATE*16)-1) & 0xFF;
 128   #endif
 129
 130   irmp_init();         // initialize rc5
 131
 132   printf("IRMP V1.0\n");
 133   #if IRMP_LOGGING == 1
 134   printf("Logging Mode\n");
 135   #endif
 136
 137   timer_init();                                                             // initialize timer
 138   #asm("sei");                                                                // enable interrupts
 139
 140   for (;;)
 141   {
 142     if (irmp_get_data (&irmp_data))
 143     {
 144         // ir signal decoded, do something here...
 145         // irmp_data.protocol is the protocol, see irmp.h
 146         // irmp_data.address is the address/manufacturer code of ir sender
 147         // irmp_data.command is the command code
 148         #if IRMP_LOGGING != 1
 149         if((irmp_data.protocol == IRMP_NEC_PROTOCOL) && (irmp_data.address == IRMP_APPLE_ADDRESS))
 150           printf("Code: Apple\n");
 151         else printf("Code: %s\n",Proto[irmp_data.protocol-1]);
 152         printf("Address: 0x%.2X\n",irmp_data.address);
 153         printf("Command: 0x%.2X\n\n",irmp_data.command);
 154         #endif
 155     }
 156   }
 157 }
 158
 159 #else  // gcc
 160
 161 // This is the main routine if you use GCC Compiler
 162 int
 163 main (void)
 164 {
 165   IRMP_DATA irmp_data;
 166
 167   irmp_init();                                                              // initialize rc5
 168   timer_init();                                                             // initialize timer
 169   sei ();                                                                   // enable interrupts
 170
 171   for (;;)
 172   {
 173     if (irmp_get_data (&irmp_data))
 174     {
 175         // ir signal decoded, do something here...
 176         // irmp_data.protocol is the protocol, see irmp.h
 177         // irmp_data.address is the address/manufacturer code of ir sender
 178         // irmp_data.command is the command code
 179     }
 180   }
 181 }
 182
 183 #endif  // CODEVISION / gcc