void cc26xx_adc_init(uint32_t ADCInput)
{
//intialisation of ADC
ti_lib_aon_wuc_aux_wakeup_event(AONWUC_AUX_WAKEUP);
while(!(ti_lib_aon_wuc_power_status_get() & AONWUC_AUX_POWER_ON))
{ }
// Enable clock for ADC digital and analog interface (not currently enabled in driver)
// Enable clocks
ti_lib_aux_wuc_clock_enable(AUX_WUC_ADI_CLOCK | AUX_WUC_ANAIF_CLOCK | AUX_WUC_SMPH_CLOCK);
while(ti_lib_aux_wuc_clock_status(AUX_WUC_ADI_CLOCK | AUX_WUC_ANAIF_CLOCK | AUX_WUC_SMPH_CLOCK) != AUX_WUC_CLOCK_READY)
{ }
printf("clock selected\r\n");
// Connect AUX IO7 (DIO23, but also DP2 on XDS110) as analog input.
AUXADCSelectInput(ADCInput);
printf("input selected\r\n");
// Set up ADC range
// AUXADC_REF_FIXED = nominally 4.3 V
AUXADCEnableSync(AUXADC_REF_FIXED, AUXADC_SAMPLE_TIME_2P7_US, AUXADC_TRIGGER_MANUAL);
printf("init adc --- OK\r\n");
}
static uint16_t Get_ADC_reading(void)
{
uint16_t result_data = 0;
uint16_t ADC_array[ADC_Average] = {0};
int32_t adc_temp=0;
double result=0;
sensor_power_set_on();
adc_ct_select_set_on();
// Enable AUX
ti_lib_aon_wuc_aux_wakeup_event(AONWUC_AUX_WAKEUP);
while(!(ti_lib_aon_wuc_power_status_get() & AONWUC_AUX_POWER_ON))
{ }
// Enable clocks
ti_lib_aux_wuc_clock_enable(AUX_WUC_ADI_CLOCK | AUX_WUC_ANAIF_CLOCK | AUX_WUC_SMPH_CLOCK);
while(ti_lib_aux_wuc_clock_status(AUX_WUC_ADI_CLOCK | AUX_WUC_ANAIF_CLOCK | AUX_WUC_SMPH_CLOCK) != AUX_WUC_CLOCK_READY)
{ }
// Select input
AUXADCSelectInput(ADC_COMPB_IN_AUXIO5);
// Configure and enable
// AUXADCEnableSync(AUXADC_REF_VDDS_REL, AUXADC_SAMPLE_TIME_10P6_US, AUXADC_TRIGGER_MANUAL);
AUXADCEnableSync(AUXADC_REF_VDDS_REL, AUXADC_SAMPLE_TIME_170_US, AUXADC_TRIGGER_MANUAL);
// AUXADCEnableSync(AUXADC_REF_FIXED, AUXADC_SAMPLE_TIME_10P6_US, AUXADC_TRIGGER_MANUAL);
// Read
for(int i=0;i<ADC_Average;i++)
{
AUXADCGenManualTrigger();
adc_temp = AUXADCReadFifo();
if(adc_temp<2048)
{
result = adc_temp - 2048;
}else{
result = adc_temp;
}
ADC_array[i] = (uint16_t)(abs(result));
// AUXADCReadFifo();
}
result_data = Adc_Average(ADC_array);
// result_data = upcount++;
// AUXADCGenManualTrigger();
// result_data = AUXADCReadFifo();
// Disable ADC
AUXADCDisable();
adc_ct_select_set_off();
// relay_all_clear();
// sensor_power_set_off();
return result_data;
}
