gpiote interrupt not taken

Question

nRF51_SDK_9.0.0_2e23562
S310 
 /*
 * Setup the gpiote to handle pin events on the MMA8451Q INT1 pin. For the
 * accelerometer we want to detect high->low transitions in order to know
 * when accelerometer data is ready.
 */
static nrf_drv_gpiote_in_config_t m_INT1_pin_config =
{
 .is_watcher = false,
 .hi_accuracy = true,
 .pull = NRF_GPIO_PIN_NOPULL,
 .sense = NRF_GPIOTE_POLARITY_HITOLO
};
 
 There seems to be an issue around gpiote interrupts being lost when the pin config is set to low accuracy. This, I note, has been fixed in SDK 11. 
 We see an issue when the pin config is set to high accuracy. 
 I need a code sample for the workaround for this issue.

wlgrd · Accepted Answer

Just so you can mark this as solved: 
 If you don't have an external pullup, the solution is to set .pull to PULLUP. This way, the GPIOTE IN pin can have a defined state before high to low transition. If the initial value of the pin (which in your case is floating) is lower than a certain threshold (which I couldn't find at the moment), the transition will not be registered. 
 Setting an internal pullup will result in a high to low transition of VCC->GND and will certainly be registeret as a valid transition.

gpiote interrupt not taken

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