Will this brick my 51822 chip?

[Dan Danknick]

Executing:

nrf_gpio_range_cfg_input(0, 39, NRF_GPIO_PIN_NOPULL);

I believe it will.

I know the range should end at 30 but I hit the wrong key when I coded it. So far, I have 2 dead DVT boards and one dead PCA10001 that not even nRFgo Studio can recover. The Segger cannot read the ARM Coresight module inside the 51822 over SWD.

I figure that if the PCA10001 is messed up I have even less hope recovering the DVT hardware.

Dan

[Dan Danknick]

RK,

The chip itself only has 31 GPIOs as per the spec. It's probably more than most would ever need.

It's funny that there is not a test on parameters of that function (nor the base one it calls) as the Nordic libraries seem to parameter check just about everything else. Well, it's ultimately my fault not theirs.

Another theory I have is that my code was crashing and eventually ended up in NVIC_SystemReset() shortly after entering main(), causing a high speed reset loop. It may be that the Segger cannot get hold of the core via SWD in this case. I've added a nrf_delay_ms(10); as the first instruction in main() as a hedge against this ever happening again.

Dan