/**
* \internal
* \brief ADC callback mode test function
*
* This test checks the callback functionality of the ADC driver.
* ADC callback for buffered conversion is enabled.
* Converted results are verified for expected results.
*
* \param test Current test case.
*/
static void run_adc_callback_mode_test(const struct test_case *test)
{
uint16_t timeout_cycles = 0xFFFF;
/* Set 0.5V DAC output */
dac_chan_write(&dac_inst, DAC_CHANNEL_0, DAC_VAL_HALF_VOLT);
delay_ms(1);
/* Start ADC read */
adc_read_buffer_job(&adc_inst, adc_buf, ADC_SAMPLES);
do {
timeout_cycles--;
if (interrupt_flag) {
break;
}
} while (timeout_cycles > 0);
/* Test for timeout */
test_assert_true(test, timeout_cycles > 0,
"Timeout in ADC read");
/* Test result */
for (uint8_t i = 0; i < ADC_SAMPLES; i++) {
test_assert_true(test,
(adc_buf[i] > (ADC_VAL_DAC_HALF_OUTPUT - ADC_OFFSET)) &&
(adc_buf[i] < (ADC_VAL_DAC_HALF_OUTPUT + ADC_OFFSET)),
"Error in ADC conversion for 0.5V at index %d, Result: %d", i, adc_buf[i]);
}
}
int main(void)
{
system_init();
//! [setup_init]
configure_adc();
configure_adc_callbacks();
//! [setup_init]
//! [main]
//! [enable_global_interrupts]
system_interrupt_enable_global();
//! [enable_global_interrupts]
//! [start_adc_job]
adc_read_buffer_job(&adc_instance, adc_result_buffer, ADC_SAMPLES);
//! [start_adc_job]
//! [job_complete_poll]
while (adc_read_done == false) {
/* Wait for asynchronous ADC read to complete */
}
//! [job_complete_poll]
//! [inf_loop]
while (1) {
/* Infinite loop */
}
//! [inf_loop]
//! [main]
}
