]>
Commit | Line | Data |
---|---|---|
4225a882 | 1 | /*---------------------------------------------------------------------------------------------------------------------------------------------------\r |
ea29682a | 2 | * irmp-main-avr.c - demo main module to test IRMP decoder on AVR\r |
4225a882 | 3 | *\r |
7365350c | 4 | * Copyright (c) 2009-2016 Frank Meyer - frank(at)fli4l.de\r |
ea29682a | 5 | *\r |
7365350c | 6 | * $Id: irmp-main-avr.c,v 1.2 2016/01/12 21:15:16 fm Exp $\r |
ea29682a | 7 | *\r |
8 | * This demo module is runnable on AVRs\r | |
4225a882 | 9 | *\r |
775fabfa | 10 | * ATMEGA88 @ 8 MHz internal RC Osc with BODLEVEL 4.3V: lfuse: 0xE2 hfuse: 0xDC efuse: 0xF9\r |
11 | * ATMEGA88 @ 8 MHz external Crystal Osc with BODLEVEL 4.3V: lfuse: 0xFF hfuse: 0xDC efuse: 0xF9\r | |
4225a882 | 12 | *\r |
13 | * This program is free software; you can redistribute it and/or modify\r | |
14 | * it under the terms of the GNU General Public License as published by\r | |
15 | * the Free Software Foundation; either version 2 of the License, or\r | |
16 | * (at your option) any later version.\r | |
17 | *---------------------------------------------------------------------------------------------------------------------------------------------------\r | |
18 | */\r | |
ea29682a | 19 | \r |
20 | #include "irmp.h"\r | |
4225a882 | 21 | \r |
4225a882 | 22 | #ifndef F_CPU\r |
ea29682a | 23 | #error F_CPU unknown\r |
4225a882 | 24 | #endif\r |
25 | \r | |
ea29682a | 26 | static void\r |
1f54e86c | 27 | timer1_init (void)\r |
4225a882 | 28 | {\r |
476267f4 | 29 | #if defined (__AVR_ATtiny45__) || defined (__AVR_ATtiny85__) // ATtiny45 / ATtiny85:\r |
ea29682a | 30 | \r |
31 | #if F_CPU >= 16000000L\r | |
32 | OCR1C = (F_CPU / F_INTERRUPTS / 8) - 1; // compare value: 1/15000 of CPU frequency, presc = 8\r | |
33 | TCCR1 = (1 << CTC1) | (1 << CS12); // switch CTC Mode on, set prescaler to 8\r | |
34 | #else\r | |
b743217b | 35 | OCR1C = (F_CPU / F_INTERRUPTS / 4) - 1; // compare value: 1/15000 of CPU frequency, presc = 4\r |
476267f4 | 36 | TCCR1 = (1 << CTC1) | (1 << CS11) | (1 << CS10); // switch CTC Mode on, set prescaler to 4\r |
ea29682a | 37 | #endif\r |
38 | \r | |
476267f4 | 39 | #else // ATmegaXX:\r |
40 | OCR1A = (F_CPU / F_INTERRUPTS) - 1; // compare value: 1/15000 of CPU frequency\r | |
41 | TCCR1B = (1 << WGM12) | (1 << CS10); // switch CTC Mode on, set prescaler to 1\r | |
1f54e86c | 42 | #endif\r |
4225a882 | 43 | \r |
1f54e86c | 44 | #ifdef TIMSK1\r |
476267f4 | 45 | TIMSK1 = 1 << OCIE1A; // OCIE1A: Interrupt by timer compare\r |
4225a882 | 46 | #else\r |
476267f4 | 47 | TIMSK = 1 << OCIE1A; // OCIE1A: Interrupt by timer compare\r |
1f54e86c | 48 | #endif\r |
4225a882 | 49 | }\r |
50 | \r | |
775fabfa | 51 | #ifdef TIM1_COMPA_vect // ATtiny84\r |
52 | #define COMPA_VECT TIM1_COMPA_vect\r | |
53 | #else\r | |
54 | #define COMPA_VECT TIMER1_COMPA_vect // ATmega\r | |
55 | #endif\r | |
56 | \r | |
775fabfa | 57 | ISR(COMPA_VECT) // Timer1 output compare A interrupt service routine, called every 1/15000 sec\r |
4225a882 | 58 | {\r |
ea29682a | 59 | (void) irmp_ISR(); // call irmp ISR\r |
60 | // call other timer interrupt routines...\r | |
4225a882 | 61 | }\r |
62 | \r | |
4225a882 | 63 | int\r |
64 | main (void)\r | |
65 | {\r | |
ea29682a | 66 | IRMP_DATA irmp_data;\r |
67 | \r | |
68 | irmp_init(); // initialize IRMP\r | |
69 | timer1_init(); // initialize timer1\r | |
1f54e86c | 70 | \r |
775fabfa | 71 | sei (); // enable interrupts\r |
1f54e86c | 72 | \r |
73 | for (;;)\r | |
74 | {\r | |
ea29682a | 75 | if (irmp_get_data (&irmp_data))\r |
76 | {\r | |
77 | ; // got an IR message, do something\r | |
78 | }\r | |
1f54e86c | 79 | }\r |
4225a882 | 80 | }\r |