//! [callback_eic]
static void eic_callback_to_clear_halt(void)
{
if (port_pin_get_input_level(CONF_FAULT_EIC_PIN)) {
tcc_clear_status(&tcc_instance,
TCC_STATUS_NON_RECOVERABLE_FAULT_PRESENT(0) |
TCC_STATUS_NON_RECOVERABLE_FAULT_OCCUR(0));
}
}
/**
* \brief Retrieves the current module status.
*
* Retrieves the status of the module, giving overall state information.
*
* \param[in] module_inst Pointer to the TCC software instance struct
*
* \return Bitmask of \c TCC_STATUS_* flags.
*
* \retval TCC_STATUS_CHANNEL_MATCH_CAPTURE(n) Channel n match/capture has occured
* \retval TCC_STATUS_CHANNEL_OUTPUT(n) Channel n match/capture output state
* \retval TCC_STATUS_NON_RECOVERABLE_FAULT_OCCUR(x) Non-recoverable fault x has occured
* \retval TCC_STATUS_RECOVERABLE_FAULT_OCCUR(n) Recoverable fault n has occured
* \retval TCC_STATUS_NON_RECOVERABLE_FAULT_PRESENT(x) Non-recoverable fault x input present
* \retval TCC_STATUS_RECOVERABLE_FAULT_PRESENT(n) Recoverable fault n input present
* \retval TCC_STATUS_SYNC_READY None of register is syncing
* \retval TCC_STATUS_CAPTURE_OVERFLOW Timer capture data has overflowed
* \retval TCC_STATUS_COUNTER_EVENT Timer counter event has occurred
* \retval TCC_STATUS_COUNT_OVERFLOW Timer count value has overflowed
* \retval TCC_STATUS_COUNTER_RETRIGGERED Timer counter has been retriggered
* \retval TCC_STATUS_STOP Timer counter has been stopped
* \retval TCC_STATUS_RAMP_CYCLE_INDEX Wave ramp index for cycle
*/
uint32_t tcc_get_status(
struct tcc_module *const module_inst)
{
/* Sanity check arguments */
Assert(module_inst);
Assert(module_inst->hw);
uint32_t int_flags = module_inst->hw->INTFLAG.reg;
uint32_t status_flags = module_inst->hw->STATUS.reg;
uint32_t status = 0;
int i;
/* SYNC */
if (module_inst->hw->SYNCBUSY.reg == 0) {
status |= TCC_STATUS_SYNC_READY;
}
/* Channels */
for (i = 0; i < TCC_NUM_CHANNELS; i++) {
if (int_flags & TCC_INTFLAG_MC(i)) {
status |= TCC_STATUS_CHANNEL_MATCH_CAPTURE(i);
}
if (status_flags & TCC_STATUS_CMP(i)) {
status |= TCC_STATUS_CHANNEL_OUTPUT(i);
}
}
/* Non-recoverable fault state */
if ((int_flags & TCC_INTFLAG_FAULT1) ||
(status_flags & TCC_STATUS_FAULT1)) {
status |= TCC_STATUS_NON_RECOVERABLE_FAULT_OCCUR(1);
}
if ((int_flags & TCC_INTFLAG_FAULT0) ||
(status_flags & TCC_STATUS_FAULT0)) {
status |= TCC_STATUS_NON_RECOVERABLE_FAULT_OCCUR(0);
}
/* Non-recoverable fault inputs */
if (status_flags & TCC_STATUS_FAULT0IN) {
status |= TCC_STATUS_NON_RECOVERABLE_FAULT_PRESENT(0);
}
if (status_flags & TCC_STATUS_FAULT1IN) {
status |= TCC_STATUS_NON_RECOVERABLE_FAULT_PRESENT(1);
}
/* Recoverable fault state */
if ((int_flags & TCC_INTFLAG_FAULTB) ||
(status_flags & TCC_STATUS_FAULTB)) {
status |= TCC_STATUS_RECOVERABLE_FAULT_OCCUR(1);
}
if ((int_flags & TCC_INTFLAG_FAULTA) ||
(status_flags & TCC_STATUS_FAULTA)) {
status |= TCC_STATUS_RECOVERABLE_FAULT_OCCUR(0);
}
/* Recoverable fault inputs */
if (status_flags & TCC_STATUS_FAULTAIN) {
status |= TCC_STATUS_RECOVERABLE_FAULT_PRESENT(0);
}
if (status_flags & TCC_STATUS_FAULTBIN) {
status |= TCC_STATUS_RECOVERABLE_FAULT_PRESENT(1);
}
/* Check for TCC capture overflow */
if (int_flags & TCC_INTFLAG_ERR) {
status |= TCC_STATUS_CAPTURE_OVERFLOW;
}
/* Check for TCC count counter */
if (int_flags & TCC_INTFLAG_CNT) {
status |= TCC_STATUS_COUNTER_EVENT;
}
/* Check for TCC count retrigger */
if (int_flags & TCC_INTFLAG_TRG) {
status |= TCC_STATUS_COUNTER_RETRIGGERED;
}
/* Check for TCC count overflow */
if (int_flags & TCC_INTFLAG_OVF) {
status |= TCC_STATUS_COUNT_OVERFLOW;
}
/* Check for TCC count stop */
if (status_flags & TCC_STATUS_STOP) {
status |= TCC_STATUS_STOPPED;
}
return status;
}
/**
* \internal
* \brief Test Non-Recoverable Fault (FAULTx)
*
* This test uses TCC0 as a PWM generator (compare function).
* EXTINT will be used to route fault input to TCC0.
*
* \param test Current test case.
*/
static void run_faultx_test(const struct test_case *test)
{
test_assert_true(test,
tcc_init_success == true,
"TCC initialization failed, skipping test");
/* Configure TCC module for PWM generation with fault */
tcc_reset(&tcc_test0_module);
tcc_get_config_defaults(&tcc_test0_config, CONF_TEST_TCC0);
tcc_test0_config.counter.period = 0x03FF;
tcc_test0_config.compare.wave_generation =
TCC_WAVE_GENERATION_SINGLE_SLOPE_PWM;
tcc_test0_config.compare.match[TCC_MATCH_CAPTURE_CHANNEL_0] = 0x01FF;
tcc_test0_config.wave_ext.non_recoverable_fault[TCC_WAVE_OUTPUT_0].output = TCC_FAULT_STATE_OUTPUT_1;
tcc_init(&tcc_test0_module, CONF_TEST_TCC0, &tcc_test0_config);
/* Configure TCC events for non-recoverable fault input */
struct tcc_events tcc_test_events;
memset(&tcc_test_events, 0, sizeof(struct tcc_events));
tcc_test_events.on_input_event_perform_action[0] = true;
tcc_test_events.input_config[0].modify_action = true;
tcc_test_events.input_config[0].action = TCC_EVENT_ACTION_NON_RECOVERABLE_FAULT;
tcc_enable_events(&tcc_test0_module, &tcc_test_events);
tcc_enable(&tcc_test0_module);
/* Configure IO pin to generate fault */
struct port_config config_pin;
port_get_config_defaults(&config_pin);
config_pin.direction = PORT_PIN_DIR_OUTPUT;
port_pin_set_config(CONF_TEST_PIN_OUT, &config_pin);
port_pin_set_output_level(CONF_TEST_PIN_OUT, true);
/* Configure EIC to capture fault input */
struct extint_chan_conf config;
extint_chan_get_config_defaults(&config);
config.filter_input_signal = true;
config.detection_criteria = EXTINT_DETECT_BOTH;
config.gpio_pin = CONF_EIC_PIN;
config.gpio_pin_mux = CONF_EIC_MUX;
extint_chan_set_config(CONF_EIC_CHAN, &config);
struct extint_events extint_test_events;
memset(&extint_test_events, 0, sizeof(struct extint_events));
extint_test_events.generate_event_on_detect[CONF_EIC_CHAN] = true;
extint_enable_events(&extint_test_events);
/* Configure EVENTs to route fault input */
struct events_resource event_resource;
struct events_config event_config;
events_get_config_defaults(&event_config);
event_config.generator = CONF_EVENT_GENERATOR_ID;
event_config.path = EVENTS_PATH_ASYNCHRONOUS;
events_allocate(&event_resource, &event_config);
events_attach_user(&event_resource, CONF_EVENT_USER_ID_FAULTx);
/* Clear halt status */
tcc_clear_status(&tcc_test0_module,
TCC_STATUS_NON_RECOVERABLE_FAULT_PRESENT(0) |
TCC_STATUS_NON_RECOVERABLE_FAULT_OCCUR(0));
uint32_t test_val1 = tcc_get_count_value(&tcc_test0_module);
uint32_t test_val2 = tcc_get_count_value(&tcc_test0_module);
/* Check TCC is running */
test_assert_true(test,
test_val1 != test_val2,
"The counter failed to stop on non-recoverable fault");
/* Set fault */
port_pin_set_output_level(CONF_TEST_PIN_OUT, false);
/* Check fault state */
test_assert_true(test,
TCC_STATUS_NON_RECOVERABLE_FAULT_OCCUR(0) &
tcc_get_status(&tcc_test0_module),
"The counter failed to detect non-recoverable fault");
/* Check TCC is running */
test_val1 = tcc_get_count_value(&tcc_test0_module);
test_val2 = tcc_get_count_value(&tcc_test0_module);
test_assert_true(test,
test_val1 == test_val2,
"The counter failed to stop on non-recoverable fault");
}
