how to config GPIO in nRF52840 DK It is very urgent.

RE: how to config GPIO in nRF52840 DK It is very urgent.

William-chou — Wed, 08 Nov 2023 10:29:26 GMT

thank you.but I encountered new difficulties

RE: how to config GPIO in nRF52840 DK It is very urgent.

Vidar Berg — Mon, 06 Nov 2023 13:31:28 GMT

P0.26 and P0.27 should fine. Note that the silkscreen on the backside of the boards show which pins are being used by the board for LEDs, buttons, etc.

RE: how to config GPIO in nRF52840 DK It is very urgent.

William-chou — Mon, 06 Nov 2023 13:15:05 GMT

If I want to enable other gpio, are there any other recommended pins to use？

RE: how to config GPIO in nRF52840 DK It is very urgent.

Vidar Berg — Mon, 06 Nov 2023 11:12:30 GMT

Hello,

On the nRF52840 DK, P0.0 and P0.1 are connected to the 32KHz crystal: 32.768 kHz crystal. If you must use these pins, you need to short SB4 and SB3, cut SB1 and SB2, then change the LF clock source to the internal RC oscillator in your FW by adding CLOCK_CONTROL_NRF_K32SRC_RC=y to your prj.conf.

Best regards,

Vidar