/**
* \brief Analog comparator interrupt callback function
*
* This function is called when an interrupt has occurred on a channel in analog
* comparator.
*
* \param ac Pointer to the analog comparator (AC) base address which caused
* the interrupt
* \param channel The analog comparator channel that caused the interrupt
* \param status Analog comparator window status given by a \ref ac_status_t
* value
*/
static void example_aca_interrupt_callback(AC_t *ac, uint8_t channel,
enum ac_status_t status)
{
/*
* If trigger was caused by moving into above or below, switch to
* trigger by being inside. If trigger was caused by moving inside the
* window, switch to trigger on outside.
*/
if (status != AC_STATUS_INSIDE) {
ac_set_interrupt_mode(&aca_config, AC_INT_MODE_INSIDE_WINDOW);
} else {
ac_set_interrupt_mode(&aca_config, AC_INT_MODE_OUTSIDE_WINDOW);
}
ac_disable(&ACA, 1);
ac_disable(&ACA, 0);
ac_write_config(&ACA, 0, &aca_config);
ac_enable(&ACA, 0);
ac_enable(&ACA, 1);
example_ac_update_window_leds(status);
}
/** \brief Resets and disables the Analog Comparator driver.
*
* Resets and disables the Analog Comparator driver, resets the internal
* states and registers of the hardware module to their power-on defaults.
*
* \param[out] module_inst Pointer to the AC software instance struct
*/
enum status_code ac_reset(
struct ac_module *const module_inst)
{
/* Sanity check arguments */
Assert(module_inst);
Assert(module_inst->hw);
Ac *const ac_module = module_inst->hw;
/* Disable the hardware module */
ac_disable(module_inst);
while (ac_is_syncing(module_inst)) {
/* Wait until synchronization is complete */
}
/* Software reset the module */
ac_module->CTRLA.reg |= AC_CTRLA_SWRST;
return STATUS_OK;
}