nrf52840 usb configration

RE: nrf52840 usb configration

Sigurd Hellesvik — Wed, 03 Apr 2024 09:37:59 GMT

Can you try to use any of these samples instead?
https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/samples/matter.html

Or is there a specific reason to why you use lightning-app specifically?

RE: nrf52840 usb configration

MasakMut — Wed, 03 Apr 2024 09:15:23 GMT

[quote userid="106736" url="~/f/nordic-q-a/109809/nrf52840-usb-configration/476736"]Which USB port du you use?[/quote]

I use nRF52840 USB

[quote userid="106736" url="~/f/nordic-q-a/109809/nrf52840-usb-configration/476736"]How do you know it does not start? What do you observe?[/quote]

When I did not modify prj.conf and nrf52840dk_nrf52840.overlay file,

LED1 starts blinking in operation.

https://github.com/project-chip/connectedhomeip/tree/v1.2.0.1/examples/lighting-app/nrfconnect#device-ui

https://github.com/project-chip/connectedhomeip/blob/v1.2.0.1/examples/lighting-app/nrfconnect/prj.conf

https://github.com/project-chip/connectedhomeip/blob/v1.2.0.1/examples/lighting-app/nrfconnect/boards/nrf52840dk_nrf52840.overlay

When I add below settings, LED1 did not start blinking

I add below setting to prj.conf.

CONFIG_USB_DEVICE_STACK=y
CONFIG_CONSOLE=y
CONFIG_UART_CONSOLE=y
CONFIG_LOG_BACKEND_UART=n
CONFIG_SHELL_LOG_BACKEND=n
CONFIG_UART_LINE_CTRL=y
CONFIG_USB_CDC_ACM_LOG_LEVEL_OFF=y
CONFIG_LOG_MODE_MINIMAL=y

And, I add below setting to nrf52840dk_nrf52840.overlay

 / {
 	chosen {
 		zephyr,console = &cdc_acm_uart0;
	};
};

&zephyr_udc0 {
	cdc_acm_uart0: cdc_acm_uart0 {
		compatible = "zephyr,cdc-acm-uart";
		label = "CDC_ACM_0";
	};
};

RE: nrf52840 usb configration

Sigurd Hellesvik — Wed, 03 Apr 2024 06:50:55 GMT

[quote user="MasakMut"]if I do not connect nrf52840 to PC via serial terminal, nrf52840 did not start operation.[/quote]

Which USB port du you use?

How do you know it does not start? What do you observe?

RE: nrf52840 usb configration

MasakMut — Wed, 03 Apr 2024 00:11:51 GMT

Thank you for your reply.

I am using nrf connect sdk.

build error does not occur.

nrf52840 with native USB needs serial terminal connection for boot.

if I do not connect nrf52840 to PC via serial terminal, nrf52840 did not start operation.

RE: nrf52840 usb configration

Sigurd Hellesvik — Tue, 02 Apr 2024 09:35:51 GMT

Hi again,

[quote user=""]github.com/.../quote]

We recommend using the nRF Connect SDK to work with Matter samples for nRF devices.
Do you get the same error if you do that?

Regards,
Sigurd Hellesvik

[/quote]