How to read ADC channel one and then Second then third?

RE: How to read ADC channel one and then Second then third?

Jørgen Holmefjord — Thu, 31 Aug 2017 08:46:55 GMT

Great! Please accept the answer by clicking the gray checkmark next to it, if you found this helpful!

RE: How to read ADC channel one and then Second then third?

vishal — Wed, 30 Aug 2017 18:19:06 GMT

Thanks, sir problem is solved.......

RE: How to read ADC channel one and then Second then third?

Jørgen Holmefjord — Wed, 23 Aug 2017 11:42:33 GMT

I have uploaded an example in my answer above. Please have a look at this.

RE: How to read ADC channel one and then Second then third?

vishal — Wed, 23 Aug 2017 06:00:44 GMT

Thank you sir for giving me quick reply. But sir i am new in nordic programming so can give some reference sample example for how initialized and uninitialized ADC channel after reached specific sampling. and then how to enable next channel in programming. I am confused not understand where exactly i need to change. I am using Github nRF52 ADC sample example is it time driven SAADC.

Thanks......

RE: How to read ADC channel one and then Second then third?

Jørgen Holmefjord — Tue, 22 Aug 2017 19:41:41 GMT

Hi,

Unless you want to setup a 12288 samples big buffer for conversion and wait for the NRF_DRV_SAADC_EVT_DONE that will be generated when the buffer is filled, you need to use a counter that you increment whenever you call the sample task. When you have reached the desired amount of samples, simply uninit the sampled channel and init the next channel.

The SAADC will only sample the channels that is activated at the moment that the sample task is called.

[EDIT]: Example you requested, with 3 channels, and aquireing 12288 samples from each channel before switching to next: saadc_multiple_channels_no_scan_mode.zip

Best regards,

Jørgen