nrfx_gpiote interrupt causing hard fault

[aplatts]

Hi

Using the nrf52840-dk with SD S140 and nrfx_gpiote, everything runs fund (BLE, TWI etc) but interrup on pin 0,28 causes a Hard Fault. I can not get any sensible logs to diagnose the issue (I'm using VSC and not familiar with Debug).

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//IMU Interrup PIN Handler

nrfx_gpiote_in_config_t in_config = NRFX_GPIOTE_CONFIG_IN_SENSE_HITOLO(true);

in_config.pull = NRF_GPIO_PIN_PULLDOWN; //NRF_GPIO_PIN_NOPULL;

in_config.hi_accuracy = true;

err_code = nrfx_gpiote_in_init(MPU_INT_PIN, &in_config, in_pin_handler);

APP_ERROR_CHECK(err_code);

nrfx_gpiote_in_event_enable(MPU_INT_PIN, true);

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

//IMU Interrup PIN Handler
    nrfx_gpiote_in_config_t in_config = NRFX_GPIOTE_CONFIG_IN_SENSE_HITOLO(true);
    in_config.pull = NRF_GPIO_PIN_PULLDOWN; //NRF_GPIO_PIN_NOPULL;
    in_config.hi_accuracy = true;
    err_code = nrfx_gpiote_in_init(MPU_INT_PIN, &in_config, in_pin_handler);
    APP_ERROR_CHECK(err_code);
    nrfx_gpiote_in_event_enable(MPU_INT_PIN, true);

Any ideas?

Thanks