Prorblem!!! ADC from various pin in nRF51822...

[Urvisha Andani]

Hello All,

I am working on nRF51822. I am use IAR and nRF51 SDK 12.3.0.

I want to simultaneously read the value from 2 analog pins. For this, do I create just one adc_init function and handler functions or do I need to create multiple initializing and handling functions; one per pin?

So give suggestio, as soon as possible.

Thanks & regards,

Urvisha Andani

[Kenneth]

On the nRF51-series there is only one CONFIG register, so you need to manually re-init and sample each individual pin yes.

On the nRF52-series you can setup the SAADC to write directly to RAM, and thereby you can sample multiple pins if you want.

[Urvisha Andani]

hi,

Thanks for replying, can you give any example of ADC for nRF51 series?

[Kenneth]

Maybe one of these threads can be helpful:

https://devzone.nordicsemi.com/f/nordic-q-a/17683/simplest-way-to-read-an-adc-input

https://devzone.nordicsemi.com/f/nordic-q-a/16321/nrf51822-example-to-read-the-analog-input-from-adc

[Urvisha Andani]

Hi,

Thanks for replying, But this example can not helpful for me because in all this example read ADC in event handler and in same buffer in my application i can not read adc at a time and also read in different different buffer. 

As you told above manually re-init and sample each individual pin. so tell about how can i re-init pin and then init pin manually.