GPIO Pin configuration issue

RE: GPIO Pin configuration issue

Kenneth — Wed, 05 Feb 2025 15:24:19 GMT

I can see uart0 is status="okay" and use uart0_default where:

psels = < 0x6 >, < 0x1000008 >, < 0x2000005 >, < 0x3000007 >;

In this case 0x2000005 I believe means P0.5 is output, likely hardware flow control for uart0.

Kenneth

RE: GPIO Pin configuration issue

DEEPU JOY — Wed, 05 Feb 2025 14:28:46 GMT

Please check the file attached in the previous reply.

RE: GPIO Pin configuration issue

DEEPU JOY — Wed, 05 Feb 2025 14:28:22 GMT

Hi ,

devzone.nordicsemi.com/.../zephyr-_2800_1_2900_.dts

RE: GPIO Pin configuration issue

Kenneth — Wed, 05 Feb 2025 12:53:44 GMT

In your build folder there should be an zephyr.dts file, can you send me this? Do you by any chance have a bootloder or similar that may control this pin?

Kenneth

RE: GPIO Pin configuration issue

DEEPU JOY — Wed, 05 Feb 2025 11:10:10 GMT

we are using dev kit device tree and overlay for our custom board. On our custom board, we are not using uart. The gpio pin p0.05 configured on overlay as follows:
buttons{ compatible = "gpio-keys";
button_0: button_0{
gpios = <&gpio0 5 GPIO_ACTIVE_HIGH>;
label = "CHARGER";
status = "okay";
};
}
We also tried to configure this pin as adc input pin; but it is also showed the same behavior.

RE: GPIO Pin configuration issue

Kenneth — Wed, 05 Feb 2025 09:50:17 GMT

Hello,

I would likely have started to look at the pin configuration in the devicetree, to see if the pin in question might be used used by some peripheral, for instance maybe it's configured as part of the UART interface (e.g. if hardware flow control is enabled).

Kenneth