GPIOTE in inout mode

RE: GPIOTE in inout mode

Burt — Mon, 12 Feb 2024 23:16:47 GMT

GPIO_PIN_CNF_DRIVE_S0S1 I would think it should be GPIO_PIN_CNF_DRIVE_S0D1 unless this possibility does not exist.

RE: GPIOTE in inout mode

ovrebekk — Thu, 27 Sep 2018 15:11:06 GMT

Awesome!

Best of luck with your project 🙂

RE: GPIOTE in inout mode

believer — Thu, 20 Sep 2018 07:47:50 GMT

Hi Ovrebekk,

Thank you so much for your support.

Your solution works very well.

Best regards,

RE: GPIOTE in inout mode

ovrebekk — Thu, 20 Sep 2018 06:46:19 GMT

If the lib doesn't support it there is always the hardware registers ;)

I tested it myself by configuring the pin directly through the PIN_CNF[n] register:

NRF_P0->PIN_CNF[BSP_LED_0] = GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos |
GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos |
GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos;

Best regards
Torbjørn

RE: GPIOTE in inout mode

believer — Thu, 20 Sep 2018 03:14:53 GMT

Hi Ovrebekk,

Thank you for letting me know it's possible.

Can you show me exactly how to do it?

I have searched a lot in nrf lib but there's no option for me to enable the input buffer.

Best regards,

RE: GPIOTE in inout mode

ovrebekk — Wed, 19 Sep 2018 12:07:39 GMT

Hi Believer

This can be done, yes.

It is possible to enable the input buffer on the GPIO pins even in output mode, which allows you to read the state of the pins also when the pin is configured in the output direction.

Best regards
Torbjørn