How to use Buttons input as GPIO

RE: How to use Buttons input as GPIO

endnode — Fri, 10 Mar 2017 12:02:15 GMT

Well the idea is to use BOARD_CUSTOM define so in \examples\bsp\boards.h it refers to custom_board.h which is the file you should create and fill within your own project folder. Editing SDK files like this is kind of a red flag for me but sure, it will do the job.

RE: How to use Buttons input as GPIO

Maxim — Fri, 10 Mar 2017 11:02:45 GMT

Yes, it works by editing the pca10040.h and reconfigure buttons ! Thanks you so much for your answer !!!

RE: How to use Buttons input as GPIO

endnode — Fri, 10 Mar 2017 11:00:52 GMT

What should be easier and more natural then creating custom header file for custom beard if you want to compile some example?:)

RE: How to use Buttons input as GPIO

Maxim — Fri, 10 Mar 2017 10:59:35 GMT

I'am actually using the NRF52DK to program a custom board with a BMD-300 embedded. I'll try to create a custom header for this board if nothing easier already exists.

RE: How to use Buttons input as GPIO

endnode — Fri, 10 Mar 2017 10:53:15 GMT

Hi Maxim,

this is specific to particular board layout. Does it mean that you want to use some specific Dev Kit from Nordic? Then you need to tell us which and what revision. All the latest revisions of nRF51 and nRF52 DK have Arduino style headers including disabling circuit for buttons and LEDs. So simply read User Guide, ground specific PIN and you can repurpose nRF5x PINs for any GPIO task without dealing with buttons and LEDs on the DK board. To have it complete just create custom header file for board configuration (there is nice hook ready in the SDK projects) so you can still use all the modules with predefined symbols etc.

Cheers Jan