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Corrected Timer for ATTiny85
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1/*---------------------------------------------------------------------------------------------------------------------------------------------------\r
2 * main.c - demo main module to test irmp decoder\r
3 *\r
4 * Copyright (c) 2009-2011 Frank Meyer - frank(at)fli4l.de\r
5 *\r
6 * $Id: main.c,v 1.10 2011/09/08 13:22:16 fm Exp $\r
7 *\r
8 * ATMEGA88 @ 8 MHz\r
9 *\r
10 * Fuses: lfuse: 0xE2 hfuse: 0xDC efuse: 0xF9\r
11 *\r
12 * This program is free software; you can redistribute it and/or modify\r
13 * it under the terms of the GNU General Public License as published by\r
14 * the Free Software Foundation; either version 2 of the License, or\r
15 * (at your option) any later version.\r
16 *---------------------------------------------------------------------------------------------------------------------------------------------------\r
17 */\r
18\r
19#include <inttypes.h>\r
20#include <avr/io.h>\r
21#include <util/delay.h>\r
22#include <avr/pgmspace.h>\r
23#include <avr/interrupt.h>\r
24\r
25#include "irmpconfig.h"\r
26#include "irmp.h"\r
27\r
28#ifndef F_CPU\r
29#error F_CPU unkown\r
30#endif\r
31\r
32void\r
33timer1_init (void)\r
34{\r
35#if defined (__AVR_ATtiny45__) || defined (__AVR_ATtiny85__) // ATtiny45 / ATtiny85:\r
36 OCR1C = (F_CPU / F_INTERRUPTS / 4) - 1; // compare value: 1/15000 of CPU frequency, presc = 4\r
37 TCCR1 = (1 << CTC1) | (1 << CS11) | (1 << CS10); // switch CTC Mode on, set prescaler to 4\r
38#else // ATmegaXX:\r
39 OCR1A = (F_CPU / F_INTERRUPTS) - 1; // compare value: 1/15000 of CPU frequency\r
40 TCCR1B = (1 << WGM12) | (1 << CS10); // switch CTC Mode on, set prescaler to 1\r
41#endif\r
42\r
43#ifdef TIMSK1\r
44 TIMSK1 = 1 << OCIE1A; // OCIE1A: Interrupt by timer compare\r
45#else\r
46 TIMSK = 1 << OCIE1A; // OCIE1A: Interrupt by timer compare\r
47#endif\r
48}\r
49\r
50/*---------------------------------------------------------------------------------------------------------------------------------------------------\r
51 * Timer 1 output compare A interrupt service routine, called every 1/15000 sec\r
52 *---------------------------------------------------------------------------------------------------------------------------------------------------\r
53 */\r
54#ifdef TIM1_COMPA_vect // ATtiny84\r
55ISR(TIM1_COMPA_vect)\r
56#else\r
57ISR(TIMER1_COMPA_vect)\r
58#endif\r
59{\r
60 (void) irmp_ISR(); // call irmp ISR\r
61 // call other timer interrupt routines...\r
62}\r
63\r
64\r
65int\r
66main (void)\r
67{\r
68 IRMP_DATA irmp_data;\r
69\r
70 irmp_init(); // initialize irmp\r
71 timer1_init(); // initialize timer 1\r
72 sei (); // enable interrupts\r
73\r
74 for (;;)\r
75 {\r
76 if (irmp_get_data (&irmp_data))\r
77 {\r
78 // ir signal decoded, do something here...\r
79 // irmp_data.protocol is the protocol, see irmp.h\r
80 // irmp_data.address is the address/manufacturer code of ir sender\r
81 // irmp_data.command is the command code\r
82 // irmp_protocol_names[irmp_data.protocol] is the protocol name (if enabled, see irmpconfig.h)\r
83 }\r
84 }\r
85}\r