static void
ao_hmc5883_isr(void)
{
- ao_exti_disable(&AO_HMC5883_INT_PORT, AO_HMC5883_INT_PIN);
+ ao_exti_disable(AO_HMC5883_INT_PORT, AO_HMC5883_INT_PIN);
ao_hmc5883_done = 1;
ao_wakeup(&ao_hmc5883_done);
}
+static uint32_t ao_hmc5883_missed_irq;
+
void
ao_hmc5883_sample(struct ao_hmc5883_sample *sample)
{
uint8_t single = HMC5883_MODE_SINGLE;
ao_hmc5883_done = 0;
- ao_exti_enable(&AO_HMC5883_INT_PORT, AO_HMC5883_INT_PIN);
+ ao_exti_enable(AO_HMC5883_INT_PORT, AO_HMC5883_INT_PIN);
ao_hmc5883_reg_write(HMC5883_MODE, HMC5883_MODE_SINGLE);
+ ao_alarm(AO_MS_TO_TICKS(10));
cli();
while (!ao_hmc5883_done)
- ao_sleep(&ao_hmc5883_done);
+ if (ao_sleep(&ao_hmc5883_done))
+ ++ao_hmc5883_missed_irq;
sei();
+ ao_clear_alarm();
ao_hmc5883_read(HMC5883_X_MSB, (uint8_t *) sample, sizeof (struct ao_hmc5883_sample));
#if __BYTE_ORDER == __LITTLE_ENDIAN
struct ao_hmc5883_sample sample;
sample = ao_hmc5883_current;
- printf ("X: %d Y: %d Z: %d\n", sample.x, sample.y, sample.z);
+ printf ("X: %d Y: %d Z: %d missed irq: %lu\n",
+ sample.x, sample.y, sample.z, ao_hmc5883_missed_irq);
}
static const struct ao_cmds ao_hmc5883_cmds[] = {
ao_hmc5883_valid = 0;
ao_enable_port(AO_HMC5883_INT_PORT);
- ao_exti_setup(&AO_HMC5883_INT_PORT,
+ ao_exti_setup(AO_HMC5883_INT_PORT,
AO_HMC5883_INT_PIN,
AO_EXTI_MODE_FALLING | AO_EXTI_MODE_PULL_UP,
ao_hmc5883_isr);