NRF52832 SAADC HOW TO GET ADC RESULT FROM THE BUFFER !

RE: NRF52832 SAADC HOW TO GET ADC RESULT FROM THE BUFFER !

omar — Wed, 14 Jun 2017 11:36:08 GMT

It's ok,Thank you so much Jorgen !

RE: NRF52832 SAADC HOW TO GET ADC RESULT FROM THE BUFFER !

Jørgen Holmefjord — Tue, 13 Jun 2017 18:41:33 GMT

In the callback, p_buffer will contain SAMPLES_IN_BUFFER number of samples. They can be accessed using the index:

p_event->data.done.p_buffer[0] --> First sample
p_event->data.done.p_buffer[1] --> Second sample
...
p_event->data.done.p_buffer[SAMPLES_IN_BUFFER-1] --> Last sample

RE: NRF52832 SAADC HOW TO GET ADC RESULT FROM THE BUFFER !

omar — Tue, 13 Jun 2017 14:08:35 GMT

If I take more than 1 sample, How can I get the result of each samples alone ? Thank you for your answer

RE: NRF52832 SAADC HOW TO GET ADC RESULT FROM THE BUFFER !

Jørgen Holmefjord — Tue, 13 Jun 2017 13:46:59 GMT

Hi,

The SAADC peripheral support double buffering, allowing you to sample to a second buffer while processing samples in the first buffer.

You can read the samples in saadc_callback, from the parameter p_event->data.done.p_buffer[i]. Depending on the define SAMPLES_IN_BUFFER, there might be multiple samples in each buffer.

Best regards,

Jørgen