How to config UART TX and Rx pins as Analog input to measure Battery Voltage

[saiteja]

Here NRF52  TX pin is connected to Battery to measure voltage Level. i am using NRF52 with SDK 11 and s132 soft device.

Here is my Schematics

here BATTERY is connected to P0.08 and BAT_MON_EN is connected to P0.6 please help me how to measure battery voltage across TX and RX

[Jørgen Holmefjord]

Hi,

First, I'm not sure I understand what you mean by "measure battery voltage across TX and RX". How is battery voltage related to UART TX and RX pins?

Secondly, P0.06 and P0.08 cannot be used as analog inputs (required for sampling analog values like battery voltage), they are digital IO only.

Best regards,
Jørgen