X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?p=bike-lights.git;a=blobdiff_plain;f=firmware%2Ftmr.c;h=d1f1b2300bfe7e05233481948947fea330130b77;hp=d53981a6b8d1dccfcc1655993d2568988559ee87;hb=90ffd122f4387d18e8d7cf7d2a507c719409d4e5;hpb=3f38edc49796a8dd1d03c2dc302be42db2d97d50

diff --git a/firmware/tmr.c b/firmware/tmr.c
index d53981a..d1f1b23 100644
--- a/firmware/tmr.c
+++ b/firmware/tmr.c
@@ -1,44 +1,29 @@
 #include <avr/io.h>
 #include <avr/interrupt.h>
+#include <avr/wdt.h>
 
 #include "lights.h"
 
 volatile uint16_t jiffies;
-#define PATTERN_DIV 10	// clk/10
-static unsigned char pattern_div;
 
 void init_tmr()
 {
-	TCCR0A = _BV(WGM00);
-	TCCR0B = _BV(CS02) | _BV(CS00); // CLK/1024 = 1 kHz
-	OCR0A = 5; // 200 Hz
-	TIMSK |= _BV(OCIE0A);
-
-	jiffies = 0;
-	pattern_div = PATTERN_DIV;
+	WDTCR = _BV(WDIE) | _BV(WDP1); // interrupt mode, 64 ms
 }
 
 void susp_tmr()
 {
-	TCCR0A = TCCR0B = 0;
-	TIMSK &= ~_BV(OCIE0A);
-	TIFR = 0;
+	wdt_disable();
 }
 
-ISR(TIMER0_COMPA_vect)
-{
+ISR(WDT_vect) {
 	++jiffies;
 
-	pwm_timer();
-
-	if (--pattern_div == 0) {
-		timer_check_buttons();
-		patterns_next_tick();
-		timer_start_slow_adcs();
-		pattern_div = PATTERN_DIV;
-	}
+	timer_check_buttons();
+	patterns_next_tick();
+	timer_start_slow_adcs();
 
-	if ((jiffies & 0x7FFF) == 0)
+	if ((jiffies & 0x7FF) == 0)
 		ambient_log_min_max();
 }