Change to alternate function in bl654 without smartbasic

[dkj047]

Hey 

I want to use pin 57 (SIO_10)and pin59 (SIO_09) as output pin but they are configured as NFC pin by default. How to change the configuration to SIO without using the smartBasic function.

Thanks and regards 

[awneil]

SmartBASIC is a Laird thing; nothing to do with Nordic - so you'd have to ask Laird about that.

https://www.lairdconnect.com/smartbasic-for-ble

https://www.lairdconnect.com/resources/support

If you don't want to use SmartBasic, I guess you'd have to do a full chip erase and then just treat it as a standard nRF52840.

But, again, you'd need to check with Laird to be sure ...

[Simonr]

Hi

You can see the Infocenter, specifically these links (UICR and NFC pin configuration), for how to set the NFC pins as regular GPIOs. 

Best regards,

Simon

[dkj047]

It worked by defining (just adding) an macro (rather variable) CONFIG_NFCT_PINS_AS_GPIOS  in system_nrf52840.c

Project > Edit Options > Code > Preprocessor > Preprocessor Definitions (segger embedded studio)

Thanks