Enable mcumgr features on NRF5340 DK board while Bluetooth HCI_USB program is running

[Utsav R Shah]

Hello community,

I am trying for multiple firmware updates for my NRF5340 DK board. 

What I am doing is I have build and flashed the SMP server sample program found /zephyr/samples/subsys/mgmt/mcumgr/smp_svr

After flashing this application, I can see my board recognised as a ttyACM0 device while I perform ls /dev.

Using the mcumgr tool I am also able to flash the Bluetooth HCI_USB sample program and after confirming the image and resetting the board, the board now acts as a bluetooth controller. I can verify this using the bluetoothctl command.

Now If I want to do a firmware upgrade, I dont have any way in the HCI_USB application to go back to smp server application. How can I perform multiple firmware updates using mcumgr?

Can virtual com port concept be useful here? If yes then I would like to have a detailed tutorial for this .

[Hieu]

Hello Utsav,

In a different DevZone case, I was able to emulate two UART COM on the same USB peripheral simply by setting one more cdc_acm_uart node under the usbd node. 

		usbd: zephyr_udc0: usbd@40027000 {
			compatible = "nordic,nrf-usbd";
			reg = < 0x40027000 0x1000 >;
			interrupts = < 0x27 0x1 >;
			num-bidir-endpoints = < 0x1 >;
			num-in-endpoints = < 0x7 >;
			num-out-endpoints = < 0x7 >;
			num-isoin-endpoints = < 0x1 >;
			num-isoout-endpoints = < 0x1 >;
			status = "okay";
			cdc_acm_uart: cdc_acm_uart {
				compatible = "zephyr,cdc-acm-uart";
			};
			cdc_acm_uart0: cdc_acm_uart0 {
				compatible = "zephyr,cdc-acm-uart";
				label = "CDC_ACM_0";
			};

Once that second virtual COM port is setup, you can select it for MCUmgr by overlaying the chosen property as such:

/{
	chosen {
		zephyr,uart-mcumgr = &new_usb_uart_com;
	};
}

Please note that it is the Christmas - New Year holiday season here. We are thus severely understaffed, and there would be delays in responses. Our apologies for the inconveniences. 

Hieu

[Utsav R Shah]

Hello Hieu  thanks for your response. I understand Christmas season is here and most of  the people would be on vacations. I really appreciate your response. 

In the Bluetooth HCI_USB project I have done the following changes : 

I have tried modifying the overlay file and here are the results : 

The contents of my overlay file are as follows: 

/ {
chosen {
zephyr,code-partition = &slot0_partition;
zephyr,out-usb = &cdc_acm1;
zephyr,uart-mcumgr = &cdc_acm0;
};
};

&zephyr_udc0 {
cdc_acm0: cdc_acm0 {
compatible = "zephyr,cdc-acm-uart";
};
cdc_acm1: cdc_acm1 {
compatible = "zephyr,cdc-acm-uart";
};
};

&uart0 {
status = "okay";
};

The contents of my prj.conf file are as follows:

CONFIG_STDOUT_CONSOLE=y
CONFIG_GPIO=y
CONFIG_SERIAL=y
CONFIG_UART_INTERRUPT_DRIVEN=y
CONFIG_USB_DEVICE_INITIALIZE_AT_BOOT=n

CONFIG_BT=y
CONFIG_BT_HCI_RAW=y

CONFIG_USB_DEVICE_STACK=y
CONFIG_USB_DEVICE_PID=0x000B
CONFIG_USB_DEVICE_BLUETOOTH=y
CONFIG_USB_DEVICE_BLUETOOTH_VS_H4=n

# Workaround: Unable to allocate command buffer when using K_NO_WAIT since
# Host number of completed commands does not follow normal flow control.
CONFIG_BT_BUF_CMD_TX_COUNT=10

#This flag is enabled to make the mcuboot features for DFU available
CONFIG_BOOTLOADER_MCUBOOT=y

#Commands to add composite USB feature to HCI_USB program
#Composite USB configuration ----------------
CONFIG_USB_COMPOSITE_DEVICE=y
#CONFIG_USB_CDC_ACM=y

# Enable MCUmgr and dependencies.
CONFIG_NET_BUF=y
CONFIG_ZCBOR=y
CONFIG_CRC=y
CONFIG_MCUMGR=y
CONFIG_STREAM_FLASH=y
CONFIG_FLASH_MAP=y

# Some command handlers require a large stack.
CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2304
CONFIG_MAIN_STACK_SIZE=2048

# Enable flash operations.
CONFIG_FLASH=y

# Required by the `taskstat` command.
CONFIG_THREAD_MONITOR=y

# Support for taskstat command
CONFIG_MCUMGR_GRP_OS_TASKSTAT=y

# Enable statistics and statistic names.
CONFIG_STATS=y
CONFIG_STATS_NAMES=y

# Enable most core commands.
CONFIG_FLASH=y
CONFIG_IMG_MANAGER=y
CONFIG_MCUMGR_GRP_IMG=y
CONFIG_MCUMGR_GRP_OS=y
CONFIG_MCUMGR_GRP_STAT=y

# Enable logging
CONFIG_LOG=y
CONFIG_MCUBOOT_UTIL_LOG_LEVEL_WRN=y

# Disable debug logging
CONFIG_LOG_MAX_LEVEL=3

# Enable USB subsystem
CONFIG_USB_DEVICE_STACK=y
CONFIG_SERIAL=y
CONFIG_UART_LINE_CTRL=y
CONFIG_USB_DEVICE_INITIALIZE_AT_BOOT=n
CONFIG_CONSOLE=y
# USB backend is serial device
CONFIG_MCUMGR_TRANSPORT_UART=y
CONFIG_BASE64=y

Then I have build the project using the following command : 

west build -b nrf5340dk_nrf5340_cpuapp --pristine -- -DOVERLAY_CONFIG=overlay-cdc.conf -DDTC_OVERLAY_FILE=nrf5340_cpuapp.overlay -DCONFIG_MCUBOOT_SIGNATURE_KEY_FILE=\"/home/mutsl04176/ncs/v2.4.2/bootloader/mcuboot/root-rsa-2048.pem\"

After successful build, I flashed the program into the NRF5340 DK board and plugged in the other USB.

You can see from the screenshot below that I get two virtual ports as ACM0 and ACM1 :

But at the same time, the board is not visible as a Bluetooth controller under bluetoothctl . Only the default Bluetooth controller (of the laptop) is visible.

How do I solve this? 

Any other modifications that needs to be made? If yes then please let me know in which file and what needs to be done. 

Thanks!

[Hieu]

Hello Utsav,

Thank you for your understanding.

Could you please share your compiled zephyr.dts file? It's located in <build folder>/zephyr/zephyr.dts.

Also, if you can, please use the insert code block feature when you share code. It makes the code a lot more readable.

[Utsav R Shah]

/dts-v1/;

/ {
	#address-cells = < 0x1 >;
	#size-cells = < 0x1 >;
	model = "Nordic NRF5340 DK NRF5340 Application";
	compatible = "nordic,nrf5340-dk-nrf5340-cpuapp";
	chosen {
		zephyr,entropy = &cryptocell;
		zephyr,flash-controller = &flash_controller;
		zephyr,console = &uart0;
		zephyr,shell-uart = &uart0;
		zephyr,uart-mcumgr = &cdc_acm0;
		zephyr,bt-mon-uart = &uart0;
		zephyr,bt-c2h-uart = &uart0;
		zephyr,bt-hci-rpmsg-ipc = &ipc0;
		nordic,802154-spinel-ipc = &ipc0;
		zephyr,ieee802154 = &ieee802154;
		zephyr,ipc_shm = &sram0_shared;
		zephyr,sram = &sram0_image;
		zephyr,flash = &flash0;
		zephyr,code-partition = &slot0_partition;
		zephyr,sram-secure-partition = &sram0_s;
		zephyr,sram-non-secure-partition = &sram0_ns;
		zephyr,out-usb = &cdc_acm1;
	};
	aliases {
		led0 = &led0;
		led1 = &led1;
		led2 = &led2;
		led3 = &led3;
		pwm-led0 = &pwm_led0;
		sw0 = &button0;
		sw1 = &button1;
		sw2 = &button2;
		sw3 = &button3;
		bootloader-led0 = &led0;
		mcuboot-button0 = &button0;
		mcuboot-led0 = &led0;
		watchdog0 = &wdt0;
		spi-flash0 = &mx25r64;
	};
	soc {
		#address-cells = < 0x1 >;
		#size-cells = < 0x1 >;
		compatible = "nordic,nRF5340-CPUAPP-QKAA", "nordic,nRF5340-CPUAPP", "nordic,nRF53", "simple-bus";
		interrupt-parent = < &nvic >;
		ranges;
		nvic: interrupt-controller@e000e100 {
			#address-cells = < 0x1 >;
			compatible = "arm,v8m-nvic";
			reg = < 0xe000e100 0xc00 >;
			interrupt-controller;
			#interrupt-cells = < 0x2 >;
			arm,num-irq-priority-bits = < 0x3 >;
			phandle = < 0x1 >;
		};
		systick: timer@e000e010 {
			compatible = "arm,armv8m-systick";
			reg = < 0xe000e010 0x10 >;
			status = "disabled";
		};
		ficr: ficr@ff0000 {
			compatible = "nordic,nrf-ficr";
			reg = < 0xff0000 0x1000 >;
			status = "okay";
		};
		uicr: uicr@ff8000 {
			compatible = "nordic,nrf-uicr";
			reg = < 0xff8000 0x1000 >;
			status = "okay";
		};
		sram0: memory@20000000 {
			compatible = "mmio-sram";
			reg = < 0x20000000 0x80000 >;
		};
		peripheral@50000000 {
			#address-cells = < 0x1 >;
			#size-cells = < 0x1 >;
			ranges = < 0x0 0x50000000 0x10000000 >;
			dcnf: dcnf@0 {
				compatible = "nordic,nrf-dcnf";
				reg = < 0x0 0x1000 >;
				status = "okay";
			};
			oscillators: oscillator@4000 {
				compatible = "nordic,nrf-oscillators";
				reg = < 0x4000 0x1000 >;
				status = "okay";
			};
			regulators: regulator@4000 {
				compatible = "nordic,nrf-regulators";
				reg = < 0x4000 0x1000 >;
				status = "okay";
			};
			clock: clock@5000 {
				compatible = "nordic,nrf-clock";
				reg = < 0x5000 0x1000 >;
				interrupts = < 0x5 0x1 >;
				status = "okay";
			};
			power: power@5000 {
				compatible = "nordic,nrf-power";
				reg = < 0x5000 0x1000 >;
				interrupts = < 0x5 0x1 >;
				status = "okay";
				#address-cells = < 0x1 >;
				#size-cells = < 0x1 >;
				gpregret1: gpregret1@551c {
					compatible = "nordic,nrf-gpregret";
					reg = < 0x551c 0x1 >;
					status = "okay";
				};
				gpregret2: gpregret2@5520 {
					compatible = "nordic,nrf-gpregret";
					reg = < 0x5520 0x1 >;
					status = "okay";
				};
			};
			reset: reset-controller@5000 {
				compatible = "nordic,nrf-reset";
				reg = < 0x5000 0x1000 >;
				status = "okay";
			};
			ctrlap: ctrlap@6000 {
				compatible = "nordic,nrf-ctrlapperi";
				reg = < 0x6000 0x1000 >;
				status = "okay";
			};
			i2c0: i2c@8000 {
				compatible = "nordic,nrf-twim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0x8000 0x1000 >;
				clock-frequency = < 0x186a0 >;
				interrupts = < 0x8 0x1 >;
				status = "disabled";
			};
			spi0: spi@8000 {
				compatible = "nordic,nrf-spim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0x8000 0x1000 >;
				interrupts = < 0x8 0x1 >;
				max-frequency = < 0x7a1200 >;
				easydma-maxcnt-bits = < 0x10 >;
				status = "disabled";
			};
			uart0: uart@8000 {
				compatible = "nordic,nrf-uarte";
				reg = < 0x8000 0x1000 >;
				interrupts = < 0x8 0x1 >;
				status = "okay";
				current-speed = < 0x1c200 >;
				pinctrl-0 = < &uart0_default >;
				pinctrl-1 = < &uart0_sleep >;
				pinctrl-names = "default", "sleep";
			};
			i2c1: arduino_i2c: i2c@9000 {
				compatible = "nordic,nrf-twim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0x9000 0x1000 >;
				clock-frequency = < 0x186a0 >;
				interrupts = < 0x9 0x1 >;
				status = "okay";
				pinctrl-0 = < &i2c1_default >;
				pinctrl-1 = < &i2c1_sleep >;
				pinctrl-names = "default", "sleep";
			};
			spi1: spi@9000 {
				compatible = "nordic,nrf-spim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0x9000 0x1000 >;
				interrupts = < 0x9 0x1 >;
				max-frequency = < 0x7a1200 >;
				easydma-maxcnt-bits = < 0x10 >;
				status = "disabled";
			};
			uart1: arduino_serial: uart@9000 {
				compatible = "nordic,nrf-uarte";
				reg = < 0x9000 0x1000 >;
				interrupts = < 0x9 0x1 >;
				status = "disabled";
				current-speed = < 0x1c200 >;
				pinctrl-0 = < &uart1_default >;
				pinctrl-1 = < &uart1_sleep >;
				pinctrl-names = "default", "sleep";
			};
			spi4: arduino_spi: spi@a000 {
				compatible = "nordic,nrf-spim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0xa000 0x1000 >;
				interrupts = < 0xa 0x1 >;
				max-frequency = < 0x1e84800 >;
				easydma-maxcnt-bits = < 0x10 >;
				rx-delay-supported;
				rx-delay = < 0x2 >;
				status = "okay";
				cs-gpios = < &arduino_header 0x10 0x1 >;
				pinctrl-0 = < &spi4_default >;
				pinctrl-1 = < &spi4_sleep >;
				pinctrl-names = "default", "sleep";
			};
			i2c2: i2c@b000 {
				compatible = "nordic,nrf-twim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0xb000 0x1000 >;
				clock-frequency = < 0x186a0 >;
				interrupts = < 0xb 0x1 >;
				status = "disabled";
			};
			spi2: spi@b000 {
				compatible = "nordic,nrf-spim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0xb000 0x1000 >;
				interrupts = < 0xb 0x1 >;
				max-frequency = < 0x7a1200 >;
				easydma-maxcnt-bits = < 0x10 >;
				status = "disabled";
			};
			uart2: uart@b000 {
				compatible = "nordic,nrf-uarte";
				reg = < 0xb000 0x1000 >;
				interrupts = < 0xb 0x1 >;
				status = "disabled";
			};
			i2c3: i2c@c000 {
				compatible = "nordic,nrf-twim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0xc000 0x1000 >;
				clock-frequency = < 0x186a0 >;
				interrupts = < 0xc 0x1 >;
				status = "disabled";
			};
			spi3: spi@c000 {
				compatible = "nordic,nrf-spim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0xc000 0x1000 >;
				interrupts = < 0xc 0x1 >;
				max-frequency = < 0x7a1200 >;
				easydma-maxcnt-bits = < 0x10 >;
				status = "disabled";
			};
			uart3: uart@c000 {
				compatible = "nordic,nrf-uarte";
				reg = < 0xc000 0x1000 >;
				interrupts = < 0xc 0x1 >;
				status = "disabled";
			};
			adc: adc@e000 {
				compatible = "nordic,nrf-saadc";
				reg = < 0xe000 0x1000 >;
				interrupts = < 0xe 0x1 >;
				status = "okay";
				#io-channel-cells = < 0x1 >;
				phandle = < 0x14 >;
			};
			timer0: timer@f000 {
				compatible = "nordic,nrf-timer";
				status = "disabled";
				reg = < 0xf000 0x1000 >;
				cc-num = < 0x6 >;
				max-bit-width = < 0x20 >;
				interrupts = < 0xf 0x1 >;
				prescaler = < 0x0 >;
			};
			timer1: timer@10000 {
				compatible = "nordic,nrf-timer";
				status = "disabled";
				reg = < 0x10000 0x1000 >;
				cc-num = < 0x6 >;
				max-bit-width = < 0x20 >;
				interrupts = < 0x10 0x1 >;
				prescaler = < 0x0 >;
			};
			timer2: timer@11000 {
				compatible = "nordic,nrf-timer";
				status = "disabled";
				reg = < 0x11000 0x1000 >;
				cc-num = < 0x6 >;
				max-bit-width = < 0x20 >;
				interrupts = < 0x11 0x1 >;
				prescaler = < 0x0 >;
			};
			rtc0: rtc@14000 {
				compatible = "nordic,nrf-rtc";
				reg = < 0x14000 0x1000 >;
				cc-num = < 0x4 >;
				interrupts = < 0x14 0x1 >;
				status = "disabled";
				clock-frequency = < 0x8000 >;
				prescaler = < 0x1 >;
			};
			rtc1: rtc@15000 {
				compatible = "nordic,nrf-rtc";
				reg = < 0x15000 0x1000 >;
				cc-num = < 0x4 >;
				interrupts = < 0x15 0x1 >;
				status = "disabled";
				clock-frequency = < 0x8000 >;
				prescaler = < 0x1 >;
			};
			dppic: dppic@17000 {
				compatible = "nordic,nrf-dppic";
				reg = < 0x17000 0x1000 >;
				status = "okay";
			};
			wdt: wdt0: watchdog@18000 {
				compatible = "nordic,nrf-wdt";
				reg = < 0x18000 0x1000 >;
				interrupts = < 0x18 0x1 >;
				status = "okay";
			};
			wdt1: watchdog@19000 {
				compatible = "nordic,nrf-wdt";
				reg = < 0x19000 0x1000 >;
				interrupts = < 0x19 0x1 >;
				status = "disabled";
			};
			comp: comparator@1a000 {
				compatible = "nordic,nrf-comp";
				reg = < 0x1a000 0x1000 >;
				interrupts = < 0x1a 0x1 >;
				status = "disabled";
				#io-channel-cells = < 0x1 >;
			};
			egu0: egu@1b000 {
				compatible = "nordic,nrf-egu";
				reg = < 0x1b000 0x1000 >;
				interrupts = < 0x1b 0x1 >;
				status = "okay";
			};
			egu1: egu@1c000 {
				compatible = "nordic,nrf-egu";
				reg = < 0x1c000 0x1000 >;
				interrupts = < 0x1c 0x1 >;
				status = "okay";
			};
			egu2: egu@1d000 {
				compatible = "nordic,nrf-egu";
				reg = < 0x1d000 0x1000 >;
				interrupts = < 0x1d 0x1 >;
				status = "okay";
			};
			egu3: egu@1e000 {
				compatible = "nordic,nrf-egu";
				reg = < 0x1e000 0x1000 >;
				interrupts = < 0x1e 0x1 >;
				status = "okay";
			};
			egu4: egu@1f000 {
				compatible = "nordic,nrf-egu";
				reg = < 0x1f000 0x1000 >;
				interrupts = < 0x1f 0x1 >;
				status = "okay";
			};
			egu5: egu@20000 {
				compatible = "nordic,nrf-egu";
				reg = < 0x20000 0x1000 >;
				interrupts = < 0x20 0x1 >;
				status = "okay";
			};
			pwm0: pwm@21000 {
				compatible = "nordic,nrf-pwm";
				reg = < 0x21000 0x1000 >;
				interrupts = < 0x21 0x1 >;
				status = "okay";
				#pwm-cells = < 0x3 >;
				pinctrl-0 = < &pwm0_default >;
				pinctrl-1 = < &pwm0_sleep >;
				pinctrl-names = "default", "sleep";
				phandle = < 0x12 >;
			};
			pwm1: pwm@22000 {
				compatible = "nordic,nrf-pwm";
				reg = < 0x22000 0x1000 >;
				interrupts = < 0x22 0x1 >;
				status = "disabled";
				#pwm-cells = < 0x3 >;
			};
			pwm2: pwm@23000 {
				compatible = "nordic,nrf-pwm";
				reg = < 0x23000 0x1000 >;
				interrupts = < 0x23 0x1 >;
				status = "disabled";
				#pwm-cells = < 0x3 >;
			};
			pwm3: pwm@24000 {
				compatible = "nordic,nrf-pwm";
				reg = < 0x24000 0x1000 >;
				interrupts = < 0x24 0x1 >;
				status = "disabled";
				#pwm-cells = < 0x3 >;
			};
			pdm0: pdm@26000 {
				compatible = "nordic,nrf-pdm";
				reg = < 0x26000 0x1000 >;
				interrupts = < 0x26 0x1 >;
				status = "disabled";
			};
			i2s0: i2s@28000 {
				compatible = "nordic,nrf-i2s";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0x28000 0x1000 >;
				interrupts = < 0x28 0x1 >;
				status = "disabled";
			};
			mbox: ipc: mbox@2a000 {
				compatible = "nordic,mbox-nrf-ipc", "nordic,nrf-ipc";
				reg = < 0x2a000 0x1000 >;
				tx-mask = < 0xffff >;
				rx-mask = < 0xffff >;
				interrupts = < 0x2a 0x1 >;
				#mbox-cells = < 0x1 >;
				status = "okay";
				phandle = < 0x10 >;
			};
			qspi: qspi@2b000 {
				compatible = "nordic,nrf-qspi";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0x2b000 0x1000 >, < 0x10000000 0x10000000 >;
				reg-names = "qspi", "qspi_mm";
				interrupts = < 0x2b 0x1 >;
				status = "okay";
				pinctrl-0 = < &qspi_default >;
				pinctrl-1 = < &qspi_sleep >;
				pinctrl-names = "default", "sleep";
				mx25r64: mx25r6435f@0 {
					compatible = "nordic,qspi-nor";
					reg = < 0x0 >;
					writeoc = "pp4io";
					readoc = "read4io";
					sck-frequency = < 0x7a1200 >;
					jedec-id = [ C2 28 17 ];
					sfdp-bfp = [ E5 20 F1 FF FF FF FF 03 44 EB 08 6B 08 3B 04 BB EE FF FF FF FF FF 00 FF FF FF 00 FF 0C 20 0F 52 10 D8 00 FF 23 72 F5 00 82 ED 04 CC 44 83 68 44 30 B0 30 B0 F7 C4 D5 5C 00 BE 29 FF F0 D0 FF FF ];
					size = < 0x4000000 >;
					has-dpd;
					t-enter-dpd = < 0x2710 >;
					t-exit-dpd = < 0x88b8 >;
				};
			};
			nfct: nfct@2d000 {
				compatible = "nordic,nrf-nfct";
				reg = < 0x2d000 0x1000 >;
				interrupts = < 0x2d 0x1 >;
				status = "okay";
			};
			mutex: mutex@30000 {
				compatible = "nordic,nrf-mutex";
				reg = < 0x30000 0x1000 >;
				status = "okay";
			};
			qdec0: qdec@33000 {
				compatible = "nordic,nrf-qdec";
				reg = < 0x33000 0x1000 >;
				interrupts = < 0x33 0x1 >;
				status = "disabled";
			};
			qdec1: qdec@34000 {
				compatible = "nordic,nrf-qdec";
				reg = < 0x34000 0x1000 >;
				interrupts = < 0x34 0x1 >;
				status = "disabled";
			};
			usbd: zephyr_udc0: usbd@36000 {
				compatible = "nordic,nrf-usbd";
				reg = < 0x36000 0x1000 >;
				interrupts = < 0x36 0x1 >;
				num-bidir-endpoints = < 0x1 >;
				num-in-endpoints = < 0x7 >;
				num-out-endpoints = < 0x7 >;
				num-isoin-endpoints = < 0x1 >;
				num-isoout-endpoints = < 0x1 >;
				status = "okay";
				cdc_acm0: cdc_acm0 {
					compatible = "zephyr,cdc-acm-uart";
				};
				cdc_acm1: cdc_acm1 {
					compatible = "zephyr,cdc-acm-uart";
				};
			};
			usbreg: regulator@37000 {
				compatible = "nordic,nrf-usbreg";
				reg = < 0x37000 0x1000 >;
				interrupts = < 0x37 0x1 >;
				status = "okay";
			};
			flash_controller: flash-controller@39000 {
				compatible = "nordic,nrf53-flash-controller";
				reg = < 0x39000 0x1000 >;
				partial-erase;
				#address-cells = < 0x1 >;
				#size-cells = < 0x1 >;
				flash0: flash@0 {
					compatible = "soc-nv-flash";
					erase-block-size = < 0x1000 >;
					write-block-size = < 0x4 >;
					reg = < 0x0 0x100000 >;
					partitions {
						compatible = "fixed-partitions";
						#address-cells = < 0x1 >;
						#size-cells = < 0x1 >;
						boot_partition: partition@0 {
							label = "mcuboot";
							reg = < 0x0 0x10000 >;
						};
						slot0_partition: partition@10000 {
							label = "image-0";
							reg = < 0x10000 0x40000 >;
						};
						slot0_ns_partition: partition@50000 {
							label = "image-0-nonsecure";
							reg = < 0x50000 0x30000 >;
						};
						slot1_partition: partition@80000 {
							label = "image-1";
							reg = < 0x80000 0x40000 >;
						};
						slot1_ns_partition: partition@c0000 {
							label = "image-1-nonsecure";
							reg = < 0xc0000 0x30000 >;
						};
						storage_partition: partition@f8000 {
							label = "storage";
							reg = < 0xf8000 0x8000 >;
						};
					};
				};
			};
			kmu: kmu@39000 {
				compatible = "nordic,nrf-kmu";
				reg = < 0x39000 0x1000 >;
				interrupts = < 0x39 0x1 >;
				status = "okay";
			};
			vmc: vmc@81000 {
				compatible = "nordic,nrf-vmc";
				reg = < 0x81000 0x1000 >;
				status = "okay";
			};
			gpio0: gpio@842500 {
				compatible = "nordic,nrf-gpio";
				gpio-controller;
				reg = < 0x842500 0x300 >;
				#gpio-cells = < 0x2 >;
				status = "okay";
				port = < 0x0 >;
				phandle = < 0x11 >;
			};
			gpio1: gpio@842800 {
				compatible = "nordic,nrf-gpio";
				gpio-controller;
				reg = < 0x842800 0x300 >;
				#gpio-cells = < 0x2 >;
				ngpios = < 0x10 >;
				status = "okay";
				port = < 0x1 >;
				phandle = < 0x13 >;
			};
			ieee802154: ieee802154 {
				compatible = "nordic,nrf-ieee802154";
				status = "okay";
			};
		};
		spu: spu@50003000 {
			compatible = "nordic,nrf-spu";
			reg = < 0x50003000 0x1000 >;
			interrupts = < 0x3 0x1 >;
			status = "okay";
		};
		gpiote: gpiote0: gpiote@5000d000 {
			compatible = "nordic,nrf-gpiote";
			reg = < 0x5000d000 0x1000 >;
			interrupts = < 0xd 0x5 >;
			status = "okay";
		};
		cryptocell: crypto@50844000 {
			compatible = "nordic,nrf-cc312";
			reg = < 0x50844000 0x1000 >;
			status = "okay";
			#address-cells = < 0x1 >;
			#size-cells = < 0x1 >;
			cryptocell312: crypto@50845000 {
				compatible = "arm,cryptocell-312";
				reg = < 0x50845000 0x1000 >;
				interrupts = < 0x44 0x1 >;
			};
		};
		gpiote1: gpiote@4002f000 {
			compatible = "nordic,nrf-gpiote";
			reg = < 0x4002f000 0x1000 >;
			interrupts = < 0x2f 0x5 >;
			status = "disabled";
		};
	};
	pinctrl: pin-controller {
		compatible = "nordic,nrf-pinctrl";
		i2c1_default: i2c1_default {
			phandle = < 0x4 >;
			group1 {
				psels = < 0xc0022 >, < 0xb0023 >;
			};
		};
		i2c1_sleep: i2c1_sleep {
			phandle = < 0x5 >;
			group1 {
				psels = < 0xc0022 >, < 0xb0023 >;
				low-power-enable;
			};
		};
		uart0_default: uart0_default {
			phandle = < 0x2 >;
			group1 {
				psels = < 0x14 >, < 0x20013 >;
			};
			group2 {
				psels = < 0x10016 >, < 0x30015 >;
				bias-pull-up;
			};
		};
		uart0_sleep: uart0_sleep {
			phandle = < 0x3 >;
			group1 {
				psels = < 0x14 >, < 0x10016 >, < 0x20013 >, < 0x30015 >;
				low-power-enable;
			};
		};
		pwm0_default: pwm0_default {
			phandle = < 0xb >;
			group1 {
				psels = < 0x16001c >;
			};
		};
		pwm0_sleep: pwm0_sleep {
			phandle = < 0xc >;
			group1 {
				psels = < 0x16001c >;
				low-power-enable;
			};
		};
		qspi_default: qspi_default {
			phandle = < 0xd >;
			group1 {
				psels = < 0x1d0011 >, < 0x1f000d >, < 0x20000e >, < 0x21000f >, < 0x220010 >, < 0x1e0012 >;
				nordic,drive-mode = < 0x3 >;
			};
		};
		qspi_sleep: qspi_sleep {
			phandle = < 0xe >;
			group1 {
				psels = < 0x1d0011 >, < 0x1f000d >, < 0x20000e >, < 0x21000f >, < 0x220010 >;
				low-power-enable;
			};
			group2 {
				psels = < 0x1e0012 >;
				low-power-enable;
				bias-pull-up;
			};
		};
		uart1_default: uart1_default {
			phandle = < 0x6 >;
			group1 {
				psels = < 0x21 >;
			};
			group2 {
				psels = < 0x10020 >;
				bias-pull-up;
			};
		};
		uart1_sleep: uart1_sleep {
			phandle = < 0x7 >;
			group1 {
				psels = < 0x21 >, < 0x10020 >;
				low-power-enable;
			};
		};
		spi4_default: spi4_default {
			phandle = < 0x9 >;
			group1 {
				psels = < 0x4002f >, < 0x6002e >, < 0x5002d >;
			};
		};
		spi4_sleep: spi4_sleep {
			phandle = < 0xa >;
			group1 {
				psels = < 0x4002f >, < 0x6002e >, < 0x5002d >;
				low-power-enable;
			};
		};
	};
	rng_hci: entropy_bt_hci {
		compatible = "zephyr,bt-hci-entropy";
		status = "okay";
	};
	cpus {
		#address-cells = < 0x1 >;
		#size-cells = < 0x0 >;
		cpu0: cpu@0 {
			device_type = "cpu";
			compatible = "arm,cortex-m33f";
			reg = < 0x0 >;
			#address-cells = < 0x1 >;
			#size-cells = < 0x1 >;
			itm: itm@e0000000 {
				compatible = "arm,armv8m-itm";
				reg = < 0xe0000000 0x1000 >;
				swo-ref-frequency = < 0x3d09000 >;
			};
			mpu: mpu@e000ed90 {
				compatible = "arm,armv8m-mpu";
				reg = < 0xe000ed90 0x40 >;
				arm,num-mpu-regions = < 0x8 >;
			};
		};
	};
	ipc {
		ipc0: ipc0 {
			compatible = "zephyr,ipc-openamp-static-vrings";
			memory-region = < &sram0_shared >;
			mboxes = < &mbox 0x0 >, < &mbox 0x1 >;
			mbox-names = "tx", "rx";
			role = "host";
			status = "okay";
		};
	};
	leds {
		compatible = "gpio-leds";
		led0: led_0 {
			gpios = < &gpio0 0x1c 0x1 >;
			label = "Green LED 0";
		};
		led1: led_1 {
			gpios = < &gpio0 0x1d 0x1 >;
			label = "Green LED 1";
		};
		led2: led_2 {
			gpios = < &gpio0 0x1e 0x1 >;
			label = "Green LED 2";
		};
		led3: led_3 {
			gpios = < &gpio0 0x1f 0x1 >;
			label = "Green LED 3";
		};
	};
	pwmleds {
		compatible = "pwm-leds";
		pwm_led0: pwm_led_0 {
			pwms = < &pwm0 0x0 0x1312d00 0x1 >;
		};
	};
	buttons {
		compatible = "gpio-keys";
		button0: button_0 {
			gpios = < &gpio0 0x17 0x11 >;
			label = "Push button 1";
		};
		button1: button_1 {
			gpios = < &gpio0 0x18 0x11 >;
			label = "Push button 2";
		};
		button2: button_2 {
			gpios = < &gpio0 0x8 0x11 >;
			label = "Push button 3";
		};
		button3: button_3 {
			gpios = < &gpio0 0x9 0x11 >;
			label = "Push button 4";
		};
	};
	arduino_header: connector {
		compatible = "arduino-header-r3";
		#gpio-cells = < 0x2 >;
		gpio-map-mask = < 0xffffffff 0xffffffc0 >;
		gpio-map-pass-thru = < 0x0 0x3f >;
		gpio-map = < 0x0 0x0 &gpio0 0x4 0x0 >, < 0x1 0x0 &gpio0 0x5 0x0 >, < 0x2 0x0 &gpio0 0x6 0x0 >, < 0x3 0x0 &gpio0 0x7 0x0 >, < 0x4 0x0 &gpio0 0x19 0x0 >, < 0x5 0x0 &gpio0 0x1a 0x0 >, < 0x6 0x0 &gpio1 0x0 0x0 >, < 0x7 0x0 &gpio1 0x1 0x0 >, < 0x8 0x0 &gpio1 0x4 0x0 >, < 0x9 0x0 &gpio1 0x5 0x0 >, < 0xa 0x0 &gpio1 0x6 0x0 >, < 0xb 0x0 &gpio1 0x7 0x0 >, < 0xc 0x0 &gpio1 0x8 0x0 >, < 0xd 0x0 &gpio1 0x9 0x0 >, < 0xe 0x0 &gpio1 0xa 0x0 >, < 0xf 0x0 &gpio1 0xb 0x0 >, < 0x10 0x0 &gpio1 0xc 0x0 >, < 0x11 0x0 &gpio1 0xd 0x0 >, < 0x12 0x0 &gpio1 0xe 0x0 >, < 0x13 0x0 &gpio1 0xf 0x0 >, < 0x14 0x0 &gpio1 0x2 0x0 >, < 0x15 0x0 &gpio1 0x3 0x0 >;
		phandle = < 0x8 >;
	};
	arduino_adc: analog-connector {
		compatible = "arduino,uno-adc";
		#io-channel-cells = < 0x1 >;
		io-channel-map = < 0x0 &adc 0x0 >, < 0x1 &adc 0x1 >, < 0x2 &adc 0x2 >, < 0x3 &adc 0x3 >, < 0x4 &adc 0x4 >, < 0x5 &adc 0x5 >;
	};
	gpio_fwd: nrf-gpio-forwarder {
		compatible = "nordic,nrf-gpio-forwarder";
		status = "okay";
		uart {
			gpios = < &gpio1 0x1 0x0 >, < &gpio1 0x0 0x0 >, < &gpio0 0xb 0x0 >, < &gpio0 0xa 0x0 >;
		};
	};
	reserved-memory {
		#address-cells = < 0x1 >;
		#size-cells = < 0x1 >;
		ranges;
		sram0_image: image@20000000 {
			reg = < 0x20000000 0x70000 >;
		};
		sram0_s: image_s@20000000 {
			reg = < 0x20000000 0x40000 >;
		};
		sram0_ns: image_ns@20040000 {
			reg = < 0x20040000 0x30000 >;
		};
		sram0_shared: memory@20070000 {
			reg = < 0x20070000 0x10000 >;
			phandle = < 0xf >;
		};
	};
};

[Sigurd Hellesvik]

Try to set HCI-related chosen nodes to cdc instead:

https://github.com/nrfconnect/sdk-zephyr/blob/v3.4.99-ncs1-1-rc1/boards/arm/nrf52840dongle_nrf52840/nrf52840dongle_nrf52840.dts#L21-L22