nrf52 GPIO LATCH register

[yaron]

Hi

I want to use nrf52 LATCH register. I can see the correct bit set in the register, but I am unable to clear this bit. I have tried NRF_P0->LATCH =0xFFFFFFFF; for my understanding this should clear all the bits in the LATCH register.

Please advise

[RK]

Most likely reason is that the DETECT signal for that GPIO is still asserted, in which case clearing the LATCH will do nothing.

[Susheel Nuguru]

+1 to RK

quote

If the CPU performs a clear operation on a bit in the LATCH register when the associated PINx.DETECT signal is high, the bit in the LATCH register will not be cleared.