UART Configuration Custom Board nRF5340

RE: UART Configuration Custom Board nRF5340

dario.sortino — Wed, 02 Nov 2022 13:49:03 GMT

That did the trick, thank you so much!

RE: UART Configuration Custom Board nRF5340

Kenneth — Wed, 02 Nov 2022 13:32:57 GMT

Do you have the following in your .dts file:

zephyr_udc0: &usbd {
compatible = "nordic,nrf-usbd";
status = "okay";
};

RE: UART Configuration Custom Board nRF5340

dario.sortino — Wed, 02 Nov 2022 13:15:44 GMT

I'm on nRF Connect SDK v2.1.0, and I made the board file following this guide

here https://www.youtube.com/watch?v=ufjv2NaLfN8

The example you mention builds just fine (using nrf5340dk as board in the board configuration)

RE: UART Configuration Custom Board nRF5340

Kenneth — Wed, 02 Nov 2022 13:10:10 GMT

I am not sure which ncs version you are working on, but have you tried for instance to build the nrf\samples\bluetooth\peripheral_uart\?

Edit: Have you made your own board file or are you building for DK?

Kenneth

RE: UART Configuration Custom Board nRF5340

dario.sortino — Wed, 02 Nov 2022 13:02:09 GMT

Yes, I have tried that. I can't get where it takes the reference from.

RE: UART Configuration Custom Board nRF5340

Kenneth — Wed, 02 Nov 2022 12:58:41 GMT

I missed that. Have you tried a pristine build?

Kenneth

RE: UART Configuration Custom Board nRF5340

dario.sortino — Wed, 02 Nov 2022 12:16:30 GMT

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

Hi Kenneth,

I assume that I need to define a node label as above (I found this also here https://github.com/zephyrproject-rtos/zephyr/tree/main/samples/subsys/usb/console), but when compiling I have a parse error having the zephyr_udc0 undefined.

How can I solve this behaviour?

RE: UART Configuration Custom Board nRF5340

Kenneth — Wed, 02 Nov 2022 11:58:21 GMT

Hello,

I suggest to take a look at the applications\matter_weather_station project for the Thingy:53.

In specific you can find that there is an overlay file that will override from default uart to usb cdc uart for logging/shell:

Default using uart (\boards\arm\thingy53_nrf5340)

  zephyr,console = &uart0;
  zephyr,shell-uart = &uart0;

To usb cdc uart (\matter_weather_station\configuration\thingy53_nrf5340_cpuappapp.overlay)

  zephyr,console = &cdc_acm_uart0;
  zephyr,shell-uart = &cdc_acm_uart0;

In addition I can find in the prj.conf the following:

# Configure UART logging and shell
CONFIG_LOG=y
CONFIG_LOG_MODE_DEFERRED=y
CONFIG_LOG_BACKEND_UART=n
CONFIG_LOG_PRINTK=y
CONFIG_LOG_PROCESS_THREAD_STACK_SIZE=1024
CONFIG_LOG_PROCESS_THREAD_STARTUP_DELAY_MS=4000
CONFIG_LOG_BUFFER_SIZE=8192
CONFIG_LOG_FUNC_NAME_PREFIX_DBG=n
CONFIG_MATTER_LOG_LEVEL_DBG=y
CONFIG_SHELL=y
CONFIG_SHELL_LOG_BACKEND=y

# Enable USB CDC ACM
CONFIG_USB_DEVICE_STACK=y
CONFIG_USB_DEVICE_REMOTE_WAKEUP=n
CONFIG_USB_DEVICE_PRODUCT="Thingy:53 Matter Weather"
CONFIG_USB_DEVICE_VID=0x1915
CONFIG_USB_DEVICE_PID=0x530D
CONFIG_USB_CDC_ACM=y
CONFIG_USB_CDC_ACM_LOG_LEVEL_ERR=y
CONFIG_USB_DEVICE_LOG_LEVEL_ERR=y
CONFIG_UART_LINE_CTRL=y
CONFIG_SHELL_BACKEND_SERIAL_INIT_PRIORITY=51
CONFIG_SHELL_BACKEND_SERIAL_CHECK_DTR=y

Best regards,
Kenneth