Using the Sensor Controller for ADC sampling

Hello User,

Can you show me your execution code (from SCS)?

The achieve this you would need to keep the sensor controller powered and running continuously. The sensor controller domain need more than 100 us to wake up from sleep. When the sensor controller enters sleep, the AUX domain is clocked by the 32 kHz clock which has a period of around 30+us. When the sensor controller is active and running it is clocked on 24 MHz.

 Try to either use manual trigger or reduce the tick period in the following call:

scifStartRtcTicksNow(tick interval);

Thank you for your reply！
Below is my code(from SCS)
I use the multiple buffers and buffer number is 3.
because I need 22050Hz Sample rate，if use the manual trigger ，How to realize the sampling rate？

///////////////initialization code////////////////
// Select ADC input
adcSelectGpioInput(AUXIO_A_SAMPL_ADC);
gpioClearOutput(AUXIO_O_SAMPLE_PWR);
adcEnableAsync(ADC_REF_FIXED, ADC_TRIGGER_AUX_TIMER0);

adcStartAuxTimer0Trigger(45);

// Schedule the first execution
fwScheduleTask(1);

///////////////////////execution code//////////////////////////
while(output.head < ADC_SAMPLE_BUF_LEN) {
U16 n = output.head;
adcReadFifo(output.AdcSampleBuf[n]);
// utilIncrAndWrap(n, ADC_SAMPLE_BUF_LEN; output.head);
utilIncrAndSat(n, ADC_SAMPLE_BUF_LEN; output.head);
}

fwSwitchOutputBuffer();
//fwGenAlertInterrupt();

// Schedule the next execution
fwScheduleTask(1);

////////////////////////////terminate code//////////////////////////////////////
adcStopAuxTimer0Trigger();


////////////////////////////RTOS CODE/////////////////////////////////////////
scifBtwatchStartRtcTicksNow(1100); // about 16784 us

thanks!

Hi，Eirik

I made many attempts, still not solve the problem, can you help me?

Hello,

You need to lower the tick interval from the RTOS code. I think the interval argument in adcStartAuxTimer0Trigger is based on this intenal interval. Reduce from 1100 to an appropriate interval.

scifBtwatchStartRtcTicksNow(1100); // about 16784 us