nrf51822 gpiote could not enter interrupt routine

[mm81]

Hello I am using SDK12.3 without softdevice on a custom board (with nrf51822 256k flash, 16kram without 32768 crystal).

I have written some code using GPIOTE to detect two buttons (with app_button library) when pressed and it worked no problem on nrf5 dev board.

However when i ported the code to the custom board i found that button press could only wake up the MCU but it won't enter the interrupt routine (button handler function).

Any idea could lead to this problem??

Thanks. MM

[Amigo]

NVIC_EnableIRQ(GPIOTE_Irqn) ?

[mm81]

@ Martin

1. Yes, except i have to change the pin definition correspondingly
2. Yes.
3. This is due to the hardware limitation.

Just a thought...is it possible due to the absent of 32768 crystal and somehow i do not configure to use internal RC properly? I have set the CLOCK_CONFIG_LF_SRC to RC in Configuration Wizard. Do i need to change any code in the project files??

Thanks