#include <avr/io.h>
#include <util/delay.h>
+#include <util/atomic.h>
#include <avr/sleep.h>
#include <avr/interrupt.h>
#include <avr/power.h>
#include "lights.h"
+static unsigned char prev_jiffies_8;
+
static void hw_setup()
{
init_battery();
set_sleep_mode(SLEEP_MODE_IDLE);
}
-static void hw_suspend()
+static void inline hw_suspend()
{
susp_pwm();
susp_adc();
hw_setup();
}
-int main(void)
+static void inline first_boot()
{
unsigned char mcusr_save;
hw_setup();
power_down(mcusr_save & _BV(WDRF));
+ prev_jiffies_8 = jiffies;
+
sei();
-#if 1
- while (1) {
- cli();
- if (TIMER1_IS_ON()) {
- set_sleep_mode(SLEEP_MODE_IDLE);
- } else if (adc_is_on) {
- set_sleep_mode(SLEEP_MODE_ADC);
- } else {
- set_sleep_mode(SLEEP_MODE_PWR_DOWN);
+}
+
+static void inline do_timer()
+{
+ // For now, we run them all in their own atomic blocks
+ ATOMIC_BLOCK(ATOMIC_FORCEON) {
+ timer_check_buttons();
+ }
+ ATOMIC_BLOCK(ATOMIC_FORCEON) {
+ patterns_next_tick();
+ }
+ ATOMIC_BLOCK(ATOMIC_FORCEON) {
+ pwm_disable_if_not_needed();
+ }
+ ATOMIC_BLOCK(ATOMIC_FORCEON) {
+ timer_start_slow_adcs();
+ }
+ ATOMIC_BLOCK(ATOMIC_FORCEON) {
+ if ((jiffies & 0x1FF) == 0)
+ ambient_log_min_max();
+ }
+}
+
+static void inline main_loop_iteration()
+{
+ unsigned char jiffies_8; /*
+ * we use only lower 8-bits in order to
+ * avoid the need for locking of 16-bit
+ * accesses.
+ */
+
+ cli();
+ if (TIMER1_IS_ON()) {
+ set_sleep_mode(SLEEP_MODE_IDLE);
+ } else if (adc_is_on) {
+ set_sleep_mode(SLEEP_MODE_ADC);
+ } else {
+ set_sleep_mode(SLEEP_MODE_PWR_DOWN);
+ }
+
+ sleep_enable();
+ // keep BOD active, no sleep_bod_disable();
+ sei();
+ sleep_cpu();
+ sleep_disable();
+
+ jiffies_8 = jiffies;
+
+ if (jiffies_8 != prev_jiffies_8) { // was timer IRQ
+ if (jiffies_8 - prev_jiffies_8 > 1) { // overrun
+ log_byte(0xee);
+ log_byte(jiffies_8 - prev_jiffies_8);
+ log_flush();
}
- sleep_enable();
- // keep BOD active, no sleep_bod_disable();
- sei();
- sleep_cpu();
- sleep_disable();
+ prev_jiffies_8 = jiffies_8;
+
+ do_timer();
}
-#endif
+}
+
+int main(void)
+{
+ first_boot();
+
+ while (1)
+ main_loop_iteration();
#if 0
DDRB |= _BV(PB2);