Bug in the SDK function below. channel_free is called whether or not pin_in_use_by_te() is true or not. For us this resulted in channel_free() getting called with an invalid channel_port of FF which resulted in an out of bounds dereference and memory corruption. I would suggest only calling channel_free() if pin_in_use_by_te() is true.
We found this in v13.0.0, but it looks like it's still in the latest version.
I'm aware that we probably shouldn't be calling uninit on a function that hasn't had init called first, but regardless I think the protection would be wise.
void nrfx_gpiote_in_uninit(nrfx_gpiote_pin_t pin)
{
NRFX_ASSERT(nrf_gpio_pin_present_check(pin));
NRFX_ASSERT(pin_in_use_by_gpiote(pin));
nrfx_gpiote_in_event_disable(pin);
if (pin_in_use_by_te(pin))
{
nrf_gpiote_te_default((uint32_t)channel_port_get(pin));
}
if (pin_configured_check(pin))
{
nrf_gpio_cfg_default(pin);
pin_configured_clear(pin);
}
channel_free((uint8_t)channel_port_get(pin));
pin_in_use_clear(pin);
}
