saadc example

[Waqar Ahmed]

i have nrf52 dk i run simple examle saadc from sdk 12.1. now i want to get result. i can't understand the code. i start putty terminal adc event number and app info number is showing .can some one tell me how i give analog input to dk and which gpio pin number so i can get digital outputs at putty .thanks

[Jørgen Holmefjord]

Hi,

The SAADC example in the SDK is described in the SDK example documentation. As described in the documentation, the example use analog input 0 (GPIO pin 2) to sample analog signal. This is the pin marked P0.02 on the nRF52 DK. There are 8 analog inputs on the nRF52832 (AIN0-AIN7), and you can find the corresponding GPIO pin name in the Pin assignments-section of the product specifications.

Best regards,

Jørgen

[MikeLemon]

Hi there sorry for digging the car from the grave but when I run this example and short the P0.02 or P0.03 to ground the result won't change from 2.8xxx any idea why?