OSStatus platform_adc_take_sample( const platform_adc_t* adc, uint16_t* output ) { OSStatus err = kNoErr; platform_mcu_powersave_disable(); require_action_quiet( adc != NULL, exit, err = kParamErr); channel_num = adc->channel; adc_channel_enable(ADC, adc->channel); adc_set_callback(ADC, adc->interrupt, adc_end_conversion, 1); /* Start conversion */ adc_start_software_conversion(ADC); adc_start_calibration(ADC); while (adc_get_interrupt_status(ADC) & (1 << adc->channel)); *output = adc_channel_get_value(ADC, adc->channel); mico_thread_msleep(1); adc_channel_disable(ADC, adc->channel); exit: platform_mcu_powersave_enable(); return err; }
/** * \brief Application entry point. * * \return Unused (ANSI-C compatibility). */ int main(void) { int32_t ul_vol; /* Initialize the SAM system. */ sysclk_init(); board_init(); configure_console(); /* Output example information. */ puts(STRING_HEADER); adc_enable(); struct adc_config adc_cfg; adc_get_config_defaults(&adc_cfg); adc_init(ADC, &adc_cfg); adc_channel_enable(ADC, ADC_CHANNEL_11); adc_set_trigger(ADC, ADC_TRIG_TIO_CH_0); adc_set_callback(ADC, ADC_INTERRUPT_EOC_11, adc_end_conversion, 1); set_adc_resolution(); adc_start_calibration(ADC); /* Configure TC */ configure_tc_trigger(); while (1) { /* Check if ADC sample is done. */ if (is_conversion_done == true) { ul_vol = g_ul_value * VOLT_REF / g_max_digital; printf("-- Voltage is: %4dmv\r\n", (int)ul_vol); is_conversion_done = false; } } }