SAADC Multiple Channel and Timer

[Sushi_27]

I want to enable a timer to start SAADC Multiple Channel and get value of each channel after every 1 seconds.

 There are many questions on how to enable a timer to start SAADC conversion every period. But never found a simple example.

[Jared]

Hi,

Are you using nRF5SDK or NCS?

regards

Jared 

[Sushi_27]

I'm using nRF5SDK

[Jared]

The SAADC example in the nRF5SDK shows you how to setup sampling by using a timer with PPI. The example samples one channel every 400 ms.

You have to:

1. Expand the buffer so that if fits the number of enabled channels
2. Increase the timer from 400 ms to 1 second
3. Enable each channel by calling nrf_drv_saadc_channel_init()

Triggering the SAMPLE task will cause the SAADC to sample each enabled channel.

regards
Jared