NRF52840 how to change GPIO pin for SAADIC example project?

Question

The example initializes the SAADC driver and configures one channel to sample analog input 0 (GPIO pin 2). 
 I would like to know how to change analog input pin to other GPIOs like P0.00~P1.03 
 Like where in the code you change your GPIO pins? 
 Thanks.

abdelali · Accepted Answer

Hi @cpeng, 
 To change the analog input pin been set in the example code , you need to update it in this function : 
 NRF_DRV_SAADC_DEFAULT_CHANNEL_CONFIG_SE(); 
 For the possible values for (PIN_N) to this function : 
 nrf_saadc_channel_config_t channel_config = NRF_DRV_SAADC_DEFAULT_CHANNEL_CONFIG_SE(PIN_N); 
 Check here : 
 https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/group__nrf__saadc__hal.html?cp=6_1_6_9_0_30_2_8#ga4adceebeae2b334a695d4aecb640fe35 
 And for the mapping to the nrf52840 dk , check here : 
 infocenter.nordicsemi.com/.../hw_analog_pins.html 
 Best regards, 
 Abdelali

NRF52840 how to change GPIO pin for SAADIC example project?

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