projects/step-up/wdt.c

   1 #include <avr/io.h>
   2 #include <avr/interrupt.h>
   3 #include <avr/wdt.h>
   4
   5 #include "lights.h"
   6
   7 void init_wdt()
   8 {
   9         WDTCR = _BV(WDIE) | _BV(WDP1); // interrupt mode, 64 ms
  10 }
  11
  12 void susp_wdt()
  13 {
  14         wdt_disable();
  15 }
  16
  17 ISR(WDT_vect) {
  18         ++jiffies;
  19
  20         if (pwm_enabled) {
  21                 need_pwmled_adc = 1;
  22         }
  23
  24         if (jiffies & 0x000F) {
  25                 need_battery_adc = 1; // about every 1s
  26         }
  27
  28         patterns_next_tick();
  29         timer_check_buttons();
  30         if (!adc_enabled)
  31                 start_next_adc(); // only if not running
  32 }