From: Jan "Yenya" Kasprzak <kas@fi.muni.cz>
Date: Fri, 8 Jun 2012 16:19:58 +0000 (+0200)
Subject: PWM experiments
X-Git-Tag: gedasymbols-20120913~68
X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=commitdiff_plain;h=e1211bd691c284824463728051ab22d0cf461b06;p=bike-lights.git

PWM experiments
---

diff --git a/lights.c b/lights.c
index 18eef18..0bedc53 100644
--- a/lights.c
+++ b/lights.c
@@ -1,8 +1,26 @@
 #include <avr/io.h>
+#include <avr/eeprom.h>
 #include <util/delay.h>
 
+char dbg[5] __attribute__((section(".eeprom")));
+
 int main(void)
 {
+	TCCR1C = _BV(COM1D0) | _BV(COM1D1) | _BV(PWM1D);
+	TCCR1A = _BV(PWM1A) | _BV(PWM1B);
+	TCCR1B = 0x80 | _BV(CS13) | _BV(CS12);
+	OCR1C = 0xFF;
+	OCR1D = 0x20;
+	TCNT1 = 3;
+	DDRB |= _BV( PB5 );
+	PORTB &= ~_BV( PB5 );
+
+	_delay_ms(1000);
+	eeprom_write_byte(&dbg[0], TCNT1);
+	eeprom_write_byte(&dbg[1], OCR1C);
+	eeprom_write_byte(&dbg[2], OCR1D);
+	eeprom_write_byte(&dbg[3], TIFR);
+	eeprom_write_byte(&dbg[4], TCCR1B);
     DDRA |= _BV( PA0 );
     while( 1 ) { 
         PORTA |=  _BV( PA0 );