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1 /*---------------------------------------------------------------------------------------------------------------------------------------------------
2 * irsnd-main-avr.c - demo main module to test IRSND encoder on AVRs
4 * Copyright (c) 2010-2016 Frank Meyer - frank(at)fli4l.de
6 * $Id: irsnd-main-avr.c,v 1.3 2016/09/09 08:01:11 fm Exp $
8 * ATMEGA88 @ 8 MHz internal RC Osc with BODLEVEL 4.3V: lfuse: 0xE2 hfuse: 0xDC efuse: 0xF9
9 * ATMEGA88 @ 8 MHz external Crystal Osc with BODLEVEL 4.3V: lfuse: 0xFF hfuse: 0xDC efuse: 0xF9
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *---------------------------------------------------------------------------------------------------------------------------------------------------
26 #if defined (__AVR_ATtiny45__) || defined (__AVR_ATtiny85__) // ATtiny45 / ATtiny85:
27 OCR1C
= (F_CPU
/ F_INTERRUPTS
/ 4) - 1; // compare value: 1/15000 of CPU frequency, presc = 4
28 TCCR1
= (1 << CTC1
) | (1 << CS11
) | (1 << CS10
); // switch CTC Mode on, set prescaler to 4
30 OCR1A
= (F_CPU
/ F_INTERRUPTS
) - 1; // compare value: 1/15000 of CPU frequency
31 TCCR1B
= (1 << WGM12
) | (1 << CS10
); // switch CTC Mode on, set prescaler to 1
35 TIMSK1
= 1 << OCIE1A
; // OCIE1A: Interrupt by timer compare
37 TIMSK
= 1 << OCIE1A
; // OCIE1A: Interrupt by timer compare
41 #ifdef TIM1_COMPA_vect // ATtiny84
42 #define COMPA_VECT TIM1_COMPA_vect
44 #define COMPA_VECT TIMER1_COMPA_vect // ATmega
47 /*---------------------------------------------------------------------------------------------------------------------------------------------------
48 * timer 1 compare handler, called every 1/10000 sec
49 *---------------------------------------------------------------------------------------------------------------------------------------------------
51 ISR(COMPA_VECT
) // Timer1 output compare A interrupt service routine, called every 1/15000 sec
53 (void) irsnd_ISR(); // call irsnd ISR
54 // call other timer interrupt routines here...
57 /*---------------------------------------------------------------------------------------------------------------------------------------------------
59 *---------------------------------------------------------------------------------------------------------------------------------------------------
66 irsnd_init(); // initialize irsnd
67 timer1_init(); // initialize timer
68 sei (); // enable interrupts
72 irmp_data
.protocol
= IRMP_NEC_PROTOCOL
; // use NEC protocol
73 irmp_data
.address
= 0x00FF; // set address to 0x00FF
74 irmp_data
.command
= 0x0001; // set command to 0x0001
75 irmp_data
.flags
= 0; // don't repeat frame
77 irsnd_send_data (&irmp_data
, TRUE
); // send frame, wait for completion