ADC AIN0 -> P0.0?

[angel]

We have done a custom PCB believing that we could use P0.0 as analog input. Now we kind of found out that we cannot, and will change the PCB design. Given that we already have some of them manufactured, I have the need of making sure: Is there any way of reading analog data from P0.0?

PS: S210 v5.0.0

[Jørgen Holmefjord]

Are you using nRF51422, as the tags indicate?

[angel]

Hi Jorgen,

Yes, I am using nRF51422

[Jørgen Holmefjord]

P0.00 is ADC/LPCOMP reference input 0. It cannot be used as ADC input. You will have to change your layout to use one of the ADC inputs AIN0 - AIN7. Note that AIN0 and AIN1 is shared with the input pins for the 32.768 kHz crystal, and should be avoided if you use this in your application.

Best regards,

Jørgen

[angel]

Thanks Jorgen!

Have a nice day!