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=2e61db859d2570b23b00ecd6eb5a460a3138ae16;hp=f0d7d9350f59abb301bf131c54414d6ffb44028b;hb=b1cfa25b137d2d9d2b23354982e4632ab6e60b5c;hpb=210916486d18b3dc976c65c7b01b44bca446d856

diff --git a/firmware/tmr.c b/firmware/tmr.c
index f0d7d93..2e61db8 100644
--- a/firmware/tmr.c
+++ b/firmware/tmr.c
@@ -1,40 +1,32 @@
 #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;
+	wdt_enable(WDTO_60MS);
+	WDTCR |= _BV(WDIE); // 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();
+	timer_check_buttons();
+	patterns_next_tick();
+	timer_start_slow_adcs();
+
+	if ((jiffies & 0x7FF) == 0)
+		ambient_log_min_max();
 
-	if (--pattern_div == 0) {
-		timer_check_buttons();
-		patterns_next_tick();
-		pattern_div = PATTERN_DIV;
-	}
+	WDTCR |= _BV(WDIE); // avoid WDT reset next time
 }