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=5a94f9a40789c6fb0ddce0dd41b6ea6030135080;hp=5a4403797f1db1fb29af62faaae90ce386ebe84f;hb=HEAD;hpb=f956c1fa7f47b0e8b8afe323c2eff1b6c2607c2a

diff --git a/firmware/tmr.c b/firmware/tmr.c
index 5a44037..77e1153 100644
--- a/firmware/tmr.c
+++ b/firmware/tmr.c
@@ -1,33 +1,24 @@
 #include <avr/io.h>
 #include <avr/interrupt.h>
+#include <avr/wdt.h>
 
 #include "lights.h"
 
 volatile uint16_t jiffies;
-#define PATTERN_DIV 5	// clk/10
-static unsigned char pattern_div;
 
 void init_tmr()
 {
-	TCCR0A = _BV(WGM00);
-	TCCR0B = _BV(CS02) | _BV(CS00); // CLK/1024 = 1 kHz
-	OCR0A = 10; // 100 Hz
-	TIMSK |= _BV(OCIE0A);
-
-	jiffies = 0;
-	pattern_div = PATTERN_DIV;
+	wdt_enable(WDTO_60MS);
+	WDTCR |= _BV(WDIE); // interrupt mode, 64 ms
 }
 
-ISR(TIMER0_COMPA_vect)
+void susp_tmr()
 {
-	++jiffies;
-
-	if (--pattern_div == 0) {
-		timer_check_buttons();
-		patterns_next_tick();
-		pattern_div = PATTERN_DIV;
-	}
+	wdt_disable();
+}
 
-	timer_start_adcs();
+ISR(WDT_vect) {
+	WDTCR |= _BV(WDIE); // avoid WDT reset next time
+	++jiffies;
 }