nRF52840 dongle P0.24 and P0.22 can't be changed.

RE: nRF52840 dongle P0.24 and P0.22 can't be changed.

TGuanLa — Wed, 05 Jun 2024 01:49:42 GMT

Hi，

with uart0 being disabled, P0.22 and P0.24 could be set right value.

Thank you so much!

RE: nRF52840 dongle P0.24 and P0.22 can't be changed.

Edvin — Tue, 04 Jun 2024 13:17:37 GMT

Ah, ok. I found out that it was working when programming the DK with your application, but not the dongle. The issue was that P0.22 and P0.24 are by default used by the UART in the dongle's board files:

&pinctrl {
	uart0_default: uart0_default {
		group1 {
			psels = <NRF_PSEL(UART_TX, 0, 20)>,
				<NRF_PSEL(UART_RTS, 0, 17)>;
		};
		group2 {
			psels = <NRF_PSEL(UART_RX, 0, 24)>,
				<NRF_PSEL(UART_CTS, 0, 22)>;
			bias-pull-up;
		};
	};

(from nrf52840dongle_nrf52840-pinctrl.dtsi)

Try disabling the uart completely in your nrf52840dongle_nrf52840.overlay file, by adding this bit at the very end:

&uart0 {
	compatible = "nordic,nrf-uarte";
	status = "disabled";
	current-speed = <115200>;
	pinctrl-0 = <&uart0_default>;
	pinctrl-1 = <&uart0_sleep>;
	pinctrl-names = "default", "sleep";
};

At least that did the trick for me.

Best regards,

Edvin

RE: nRF52840 dongle P0.24 and P0.22 can't be changed.

TGuanLa — Tue, 04 Jun 2024 04:07:48 GMT

I use nRF Connect SDK v2.3.0.

RE: nRF52840 dongle P0.24 and P0.22 can't be changed.

Edvin — Mon, 03 Jun 2024 13:24:47 GMT

What NCS version are you using?

BR,
Edvin

RE: nRF52840 dongle P0.24 and P0.22 can't be changed.

TGuanLa — Mon, 03 Jun 2024 02:19:53 GMT

Hi Edvin,

sorry for the late response.

Here is my project. I set the GPIO value in function m_gpio_initial().

devzone.nordicsemi.com/.../receiver_5F00_PA_5F00_GPIO.zip

This is my custom nRF52840 dongle SCH. I want to use P0.22 and P0.24 to control external PA&LNA.

Thanks!

RE: nRF52840 dongle P0.24 and P0.22 can't be changed.

Edvin — Thu, 30 May 2024 09:06:17 GMT

Hello,

Difficult to say exactly what the issue might be based on this. Did you always have this:

/ {
	nrf_radio_fem: pa_lna {
	   compatible = "skyworks,sky66112-11", "generic-fem-two-ctrl-pins";
	   ctx-gpios = <&gpio0 24 GPIO_ACTIVE_HIGH>;
	   crx-gpios = <&gpio0 22 GPIO_ACTIVE_HIGH>;
	};
 };

That is, did you try without this as well?

Is it possible to zip and upload the application folder that you are currently using? Or a strip down version, that only replicates this issue?

Best regards,

Edvin