Why would a GPIO pin stop working?

RE: Why would a GPIO pin stop working?

DimitraN — Thu, 01 Feb 2024 15:09:25 GMT

[quote userid="14926" url="~/f/nordic-q-a/107939/why-would-a-gpio-pin-stop-working/466983"]Have you tested with a minimal example, if you can control the pin using nrf_gpio_cfg_output()/nrf_gpio_pin_set()/nrf_gpio_pin_clear() functions?[/quote]

Yes I tested the pin with these functions as I mentioned and the voltage I measured 2.89V and 2.86 V for high and low accordingly. Probably it was damaged by the sensor I guess as you confirmed. Thank you very much.

RE: Why would a GPIO pin stop working?

Jørgen Holmefjord — Wed, 31 Jan 2024 15:17:19 GMT

Hi,

As described in Absolute maximum ratings, the voltage on a GPIO should never exceed VDD+0.3V, or 3.9V if VDD=3.6V. If the sensor have input 5V to the GPIO, this might have damaged the pin.

Have you tested with a minimal example, if you can control the pin using nrf_gpio_cfg_output()/nrf_gpio_pin_set()/nrf_gpio_pin_clear() functions?

Best regards,
Jørgen