Using GPIO Pins with shared functionality

RE: Using GPIO Pins with shared functionality

JasonPierpont — Thu, 23 Mar 2023 16:01:06 GMT

The issue was that P0.00 and P0.01 are reserved for XTAL.

RE: Using GPIO Pins with shared functionality

JasonPierpont — Thu, 26 May 2022 15:23:18 GMT

Hi,

It was occurring on multiple boards. I was troubleshooting a very small Flex PCB and there may have been some poor connections. Everything is working now. Thanks for the assistance.

RE: Using GPIO Pins with shared functionality

Jørgen Holmefjord — Mon, 23 May 2022 13:59:47 GMT

Hi,

I verified that your code does toggle the GPIOs on P0.00-P0-05 correctly on my nRF52811 board.

Do you see this issue on a single board, or on multiple nRF52811 boards?

Best regards,
Jørgen

RE: Using GPIO Pins with shared functionality

JasonPierpont — Mon, 16 May 2022 15:37:59 GMT

Yes, I have tried with the BSP stuff removed.

Here is my code:

#define PIN 0

#include <stdbool.h>
#include <stdint.h>
#include "nrf_delay.h"
#include "boards.h"

int main(void)
{
nrf_gpio_cfg_output(PIN);

while (true)
{
nrf_gpio_pin_set(PIN);
nrf_delay_ms(2000);
nrf_gpio_pin_clear(PIN);
nrf_delay_ms(2000);
}
}

RE: Using GPIO Pins with shared functionality

Jørgen Holmefjord — Mon, 16 May 2022 15:27:02 GMT

Have you tried with the Blinky example, with the BSP function calls removed/commented out?

If you are not seeing toggles with such a minimal example, there is probably some HW issue on the board, or problems with the way you check the toggling. If you can share the full program code of your test-application, I can try it out on one of our nRF52811 boards.

RE: Using GPIO Pins with shared functionality

JasonPierpont — Mon, 16 May 2022 14:46:52 GMT

Hi,

I have tried with the blinky example. I'm using Nrf5 SDK

RE: Using GPIO Pins with shared functionality

Jørgen Holmefjord — Mon, 16 May 2022 14:35:32 GMT

Hi,

You should be able to use these pins without any additional configuration, as long as the pins are not assigned to any other peripherals (CLOCK, SAADC, GPIOTE, UART/SPI/TWI, etc). XL1/XL2 will be used by the LFCLK if you have started this with LFXO configuration.

Have you tried a minimal example, with no other code than configuring/toggling the GPIOs, like the blinky peripheral example?

Are you using nRF5 SDK, or nRF Connect SDK?

Best regards,
Jørgen