gpios set pin got "Halting system" in NCS1.9.1

[yoyou]

Hello,

NCS1.9.1, nRF52840DK, Windows10 X64, VSCode,

in file overlay:

gpios = <&gpio0 0x21 GPIO_ACTIVE_LOW>;  //P1.01    error

gpios = <&gpio0 0x13 GPIO_ACTIVE_LOW>;  //P0.19    ok

when the pin set it 0x21 will got error  "Halting system"

but set to 0x13 it runing ok.

why? 

   

thanks 

Best Regards

[Priyanka]

Hi,

For P1.x, you can refer to the pins as (pin number + 32).

For eg,

P1.01 can be &gpio0 33, i.e. 32+1 = 33

Pin 21 is just P0.21 and this is used for external flash memory and this is what causes the problem.

I would suggest you to kindly take a look at the Beginners Tutorial for NCS which has 4 parts and it is also described how to create overlay files.

There is also the Zephyr overlay guide.

Regards,

Priyanka

[yoyou]

Hi,

why change to 19 will running ok?

becase the config CONFIG_ZTEST=y

delete it or CONFIG_ZTEST=n.

Another reason is that the overwrite file does not support uppercase letters.

  

Best Regards

[Priyanka]

Hi,

Is the Solder Bridge 11 (SB11) cut and SB21 shorted by any chance?

-Priyanka