Can' get modem trace from custom board

RE: Can' get modem trace from custom board

simon884 — Thu, 03 Jul 2025 09:55:26 GMT

Ok good news, how did you do that? Because on my Mac I'm not able to convert and open it with wireshark for example.
And if I try to use :

/nrfutil trace lte --input-file ../Documents/rtt.bin --output-pcapng out.pcapng

I got an error:

[00:00:00] ------   0% [Fixed tracing] Tracing failed
Error: Failed to detect trace database (error code 100)

If I use celullar monitor -> open trace file in wireshark it's look like parse ok, detect trace DB, but when wireshark open, I have nothing on my screen, and I can't find /Users/xxxx/Downloads/test_rtt.bin to pcap on my Mac

11:58:24.865	Getting serial port options from the persistent store for 0001.pc-nrfconnect-cellularmonitor
11:58:36.328	Started converting /Users/xxxx/Downloads/test_rtt.bin to pcap.
11:58:36.497	Detected trace DB: /Users/xxxx/Library/Application Support/nrfconnect/pc-nrfconnect-cellularmonitor/trace_db_cache/nRF91x1/2.0.2-FOTA/320176d5-9f40-45fc-923b-2661ec18d547/mfw_nrf91x1_2.0.2_trace-db.json
11:58:36.810	Successfully converted /Users/xxxx/Downloads/test_rtt.bin to pcap

But it's work if I use cellular monitor -> load trace file and selectect trace 2.0.2

So I'll close this ticket and open a new one for my base issue, thanks.

RE: Can' get modem trace from custom board

Hakon — Thu, 03 Jul 2025 09:49:28 GMT

We have checked the modem trace file, and the file is perfectly intact and we are able to decode it. The contents also look normal.

RE: Can' get modem trace from custom board

simon884 — Wed, 02 Jul 2025 08:30:41 GMT

Yes thank you

RE: Can' get modem trace from custom board

Hakon — Wed, 02 Jul 2025 08:20:05 GMT

Actually, let's keep this one open and close the other one if that's ok with you. I will ask the modem team if the can decode your trace file.

RE: Can' get modem trace from custom board

simon884 — Tue, 01 Jul 2025 14:35:17 GMT

yes sure no worries

RE: Can' get modem trace from custom board

Hakon — Tue, 01 Jul 2025 11:08:16 GMT

Can we close this and continue discussion in this thread instead? As the two threads are now about trying to get a modem trace, that will make it easier for us and the modem team to handle the issue properly.

RE: Can' get modem trace from custom board

simon884 — Mon, 30 Jun 2025 12:25:28 GMT

any thoughts Hakon

RE: Can' get modem trace from custom board

simon884 — Wed, 25 Jun 2025 09:48:34 GMT

Ok so I've downloaded v8.18 and I can get .bin file. So I've try to open it in wireshark with nrf connect:

11:46:21.348	Started converting /Applications/SEGGER/JLink_V818/test.bin to pcap.
11:46:21.689	Successfully converted /Applications/SEGGER/JLink_V818/test.bin to pcap

But I've nothing in WireShark. If I try to convert with nrfutil I got an error

/nrfutil trace lte --input-file ../Documents/rtt.bin --output-pcapng out.pcapng

[00:00:00] ------   0% [Fixed tracing] Tracing failed
Error: Failed to detect trace database (error code 100)

Here is my bin file

devzone.nordicsemi.com/.../test.bin

Don't know if it' usefull but here is my conf

It's strange because if I open my bin file with text editor, I can see some AT command like (so i suppose modem trace works, because it use AT command):

�'��mÅB+CEREG: 0,4
OK
�
�(��r!B���†á!����
�(��s!B���†á!����
�1��wAB���
�1��w¡B����
�2��Ça,B���¿á!����
�3��Ä-B����
�4��uaB+CFUN?�
�5��m†�
�6��m¿�
�6��yaB��
�7��n¡B+CFUN: 0
OK

RE: Can' get modem trace from custom board

Hakon — Tue, 24 Jun 2025 11:02:27 GMT

[quote user="simon884"]I don't know if I'm using the good version because if I try to do JLinkRTTLogger -? no return.[/quote]

But do you know what version you are using? You should check this first. If it is too recent, it might not be fully supported.

RE: Can' get modem trace from custom board

simon884 — Mon, 23 Jun 2025 13:38:21 GMT

I have nothing in SEGGER folder... I don't know if I'm using the good version because if I try to do JLinkRTTLogger -? no return.

I' ve just folow this answer, changing nrf9160 by nrf9151. But I'm not able to see

------------------------------------------------------------
Connected to:
SEGGER J-Link (unknown)
S/N: XXXXXXXXXXX

For information, I'm using JLink over nrf9160-dk board.

My prj.conf used with at_client sample (using soft sim onomondo)

#
# Copyright (c) 2019 Nordic Semiconductor ASA
#
# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
#
# General config
CONFIG_ASSERT=y

### Onomondo SoftSIM ###
CONFIG_SOFTSIM_DEBUG=y
CONFIG_SOFTSIM_LOG_LEVEL_ERR=y
CONFIG_SOFTSIM_BUNDLE_TEMPLATE_HEX=y
CONFIG_SOFTSIM_STATIC_PROFILE_ENABLE=y
# GSMA TS.48 USIM profile (standard test profile) replace with actual Onomondo profile
CONFIG_SOFTSIM_STATIC_PROFILE="XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
### Onomondo SoftSIM ###

# Network
CONFIG_NETWORKING=y
CONFIG_NET_NATIVE=n
CONFIG_NET_SOCKETS=y
CONFIG_NET_SOCKETS_OFFLOAD=y
CONFIG_NET_SOCKETS_POSIX_NAMES=y

# Modem library
CONFIG_NRF_MODEM_LIB=y
CONFIG_NRF_MODEM_LIB_TRACE=y
CONFIG_NRF_MODEM_LIB_TRACE_BACKEND_RTT=y
CONFIG_USE_SEGGER_RTT=y
CONFIG_SERIAL=y


# AT host library
CONFIG_AT_HOST_LIBRARY=y
CONFIG_UART_INTERRUPT_DRIVEN=y

# Stacks and heaps
CONFIG_MAIN_STACK_SIZE=3072
CONFIG_HEAP_MEM_POOL_SIZE=16384

RE: Can' get modem trace from custom board

Hakon — Mon, 23 Jun 2025 11:35:06 GMT

Make sure you are using the JLink v8.18. Did you check the "Default logfile path: /Users/XXXXX/Library/Application Support/SEGGER/" for any log files?

RE: Can' get modem trace from custom board

simon884 — Thu, 19 Jun 2025 12:10:16 GMT

Yes I've followed your link but when I try to run

 nrfjprog --reset && JLinkRTTLogger -Device NRF9151_XXAA -If SWD -Speed 50000 /test.bin

My bord reboot and I got this result:

Applying system reset.
Run.
SEGGER J-Link RTT Logger
Compiled Jun 11 2025 12:25:04
(c) 2016-2017 SEGGER Microcontroller GmbH, www.segger.com
         Solutions for real time microcontroller applications

Default logfile path: /Users/XXXXX/Library/Application Support/SEGGER

------------------------------------------------------------


Shutting down... Done.%

And If I open JLinkRTTViewer and connect to my bord I see on the windows log coming from LOG_INF

And my prj.conf

CONFIG_NRF_MODEM_LOG=y
CONFIG_NEWLIB_LIBC=y
CONFIG_NEWLIB_LIBC_FLOAT_PRINTF=y
CONFIG_NEWLIB_LIBC_FLOAT_SCANF=y

CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048

CONFIG_LOG=y
CONFIG_LOG_BUFFER_SIZE=4096
CONFIG_DEBUG=y
CONFIG_ASSERT=y
CONFIG_REBOOT=y

CONFIG_MODEM_KEY_MGMT=y

CONFIG_NETWORKING=y
CONFIG_NET_SOCKETS=y
CONFIG_NET_NATIVE=n
CONFIG_NET_SOCKETS_OFFLOAD=y
CONFIG_NET_SOCKETS_POSIX_NAMES=y

CONFIG_LTE_LINK_CONTROL=y

CONFIG_SERIAL=y
CONFIG_AT_HOST_LIBRARY=y

CONFIG_NRF_MODEM_LIB_TRACE_BACKEND_RTT=y
CONFIG_USE_SEGGER_RTT=y
CONFIG_NRF_MODEM_LIB_TRACE=y

CONFIG_TFM_PARTITION_PROTECTED_STORAGE=n
CONFIG_PSA_CRYPTO_DRIVER_CC3XX=n

CONFIG_TRUSTED_EXECUTION_NONSECURE=y

RE: Can' get modem trace from custom board

Hakon — Thu, 19 Jun 2025 10:45:40 GMT

[quote user="simon884"]Ok so I've try to use RTTviewer with my nrf9160-DK board, I'm able to connect to my custom board build with nrf9151.
But In therminal I only see my LOG_INF message, don't see any log from modem. Should I use AT_CLIENT sample? I've added in my prj.conf 3 above lines.[/quote]

The modem trace is not supposed to be output on the same channel as the application log. It is most likely being written to a file, if things are set up correctly. Please review this document for how to perform modem trace over RTT.

RE: Can' get modem trace from custom board

simon884 — Thu, 19 Jun 2025 07:54:57 GMT

Ok thanks, but now in vscode I don't have the snippet nrf91-modem-trace-rtt?. Can I add to my prj.conf/

CONFIG_NRF_MODEM_LIB_TRACE_BACKEND_RTT=y
CONFIG_USE_SEGGER_RTT=y
CONFIG_NRF_MODEM_LIB_TRACE=y

Is it the same as the snippet?

EDIT: Ok so I've try to use RTTviewer with my nrf9160-DK board, I'm able to connect to my custom board build with nrf9151.
But In therminal I only see my LOG_INF message, don't see any log from modem. Should I use AT_CLIENT sample? I've added in my prj.conf 3 above lines.

EDIT2: I've try this command

nrfjprog --reset && JLinkRTTLogger -Device NRF9151_XXAA -If SWD -Speed 50000  /test.bin

Without sucess

▶ nrfjprog --reset && JLinkRTTLogger -Device NRF9151_XXAA -If SWD -Speed 50000 /test.bin
Applying system reset.
Run.
SEGGER J-Link RTT Logger
Compiled Jun 11 2025 12:25:04
(c) 2016-2017 SEGGER Microcontroller GmbH, www.segger.com
         Solutions for real time microcontroller applications

Default logfile path: /Users/XXXXX/Library/Application Support/SEGGER

------------------------------------------------------------


Shutting down... Done.%

RE: Can' get modem trace from custom board

Hakon — Wed, 11 Jun 2025 13:26:55 GMT

What version of JLink? This is what it looks like for me

RE: Can' get modem trace from custom board

simon884 — Tue, 10 Jun 2025 08:35:13 GMT

Ok, but when I open JLinkRTTviewer, I don't have the choise to select nrf9151 I only Have these chip

Can I use nrf9161 for 9151 ?

RE: Can' get modem trace from custom board

Hakon — Tue, 10 Jun 2025 08:25:58 GMT

You can try. I don't see any reason why it wouldn't work.

RE: Can' get modem trace from custom board

simon884 — Thu, 05 Jun 2025 14:36:52 GMT

I can try it, but just a question if I use RTT with JLINK EDU (only have this one) it will work with only swd pin?

RE: Can' get modem trace from custom board

Hakon — Thu, 05 Jun 2025 14:15:42 GMT

Can you try to use the snippet for modem trace over RTT, nrf91-modem-trace-rtt? To check if it works with RTT.

RE: Can' get modem trace from custom board

simon884 — Thu, 05 Jun 2025 12:50:00 GMT

Yes I've posted my zephyr.dts and you can see uart1 is okay. I've already followed your link, and add this 2 snippets.

Right now it's really look like AT command are only interpreted by uart0, send AT commad on uart1 seems to have no effect.

Repost my zephyr.dts

/dts-v1/;

/ {
	#address-cells = < 0x1 >;
	#size-cells = < 0x1 >;
	model = "Nordic Custom NRF9151";
	compatible = "nordic,nrf9151-dk-nrf9151";
	chosen {
		zephyr,entropy = &psa_rng;
		zephyr,flash-controller = &flash_controller;
		zephyr,console = &uart0;
		zephyr,shell-uart = &uart0;
		zephyr,uart-mcumgr = &uart0;
		zephyr,flash = &flash0;
		zephyr,sram = &sram0_ns;
		zephyr,code-partition = &slot0_ns_partition;
		zephyr,modem-trace-uart = &uart1;
		nordic,modem-trace-uart = &uart1;
	};
	aliases {
	};
	soc {
		#address-cells = < 0x1 >;
		#size-cells = < 0x1 >;
		compatible = "nordic,nrf9151-laca", "nordic,nrf9120", "nordic,nrf91", "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";
		};
		sram0: memory@20000000 {
			compatible = "mmio-sram";
			reg = < 0x20000000 0x40000 >;
		};
		peripheral@40000000 {
			#address-cells = < 0x1 >;
			#size-cells = < 0x1 >;
			ranges = < 0x0 0x40000000 0x10000000 >;
			flash_controller: flash-controller@39000 {
				compatible = "nordic,nrf91-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 0x35000 >;
						};
						slot1_partition: partition@85000 {
							label = "image-1";
							reg = < 0x85000 0x40000 >;
						};
						slot1_ns_partition: partition@c5000 {
							label = "image-1-nonsecure";
							reg = < 0xc5000 0x35000 >;
						};
						storage_partition: partition@fa000 {
							label = "storage";
							reg = < 0xfa000 0x6000 >;
						};
					};
				};
			};
			adc: adc@e000 {
				compatible = "nordic,nrf-saadc";
				reg = < 0xe000 0x1000 >;
				interrupts = < 0xe 0x1 >;
				status = "okay";
				#io-channel-cells = < 0x1 >;
			};
			dppic: dppic@17000 {
				compatible = "nordic,nrf-dppic";
				reg = < 0x17000 0x1000 >;
				status = "okay";
			};
			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";
			};
			ipc: ipc@2a000 {
				compatible = "nordic,nrf-ipc";
				reg = < 0x2a000 0x1000 >;
				interrupts = < 0x2a 0x1 >;
				status = "okay";
			};
			i2s0: i2s@28000 {
				compatible = "nordic,nrf-i2s";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0x28000 0x1000 >;
				interrupts = < 0x28 0x1 >;
				status = "disabled";
			};
			kmu: kmu@39000 {
				compatible = "nordic,nrf-kmu";
				reg = < 0x39000 0x1000 >;
				interrupts = < 0x39 0x1 >;
				status = "okay";
			};
			pdm0: pdm@26000 {
				compatible = "nordic,nrf-pdm";
				reg = < 0x26000 0x1000 >;
				interrupts = < 0x26 0x1 >;
				status = "disabled";
			};
			regulators: regulator@4000 {
				compatible = "nordic,nrf-regulators";
				reg = < 0x4000 0x1000 >;
				status = "okay";
			};
			vmc: vmc@3a000 {
				compatible = "nordic,nrf-vmc";
				reg = < 0x3a000 0x1000 >;
				status = "okay";
			};
			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";
			};
			uart1: uart@9000 {
				compatible = "nordic,nrf-uarte";
				reg = < 0x9000 0x1000 >;
				interrupts = < 0x9 0x1 >;
				status = "okay";
				current-speed = < 0xf4240 >;
				pinctrl-0 = < &uart1_default >;
				pinctrl-1 = < &uart1_sleep >;
				pinctrl-names = "default", "sleep";
			};
			uart2: uart@a000 {
				compatible = "nordic,nrf-uarte";
				reg = < 0xa000 0x1000 >;
				interrupts = < 0xa 0x1 >;
				status = "disabled";
			};
			uart3: uart@b000 {
				compatible = "nordic,nrf-uarte";
				reg = < 0xb000 0x1000 >;
				interrupts = < 0xb 0x1 >;
				status = "disabled";
			};
			i2c0: i2c@8000 {
				compatible = "nordic,nrf-twim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0x8000 0x1000 >;
				clock-frequency = < 0x186a0 >;
				interrupts = < 0x8 0x1 >;
				easydma-maxcnt-bits = < 0xd >;
				status = "disabled";
			};
			i2c1: i2c@9000 {
				compatible = "nordic,nrf-twim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0x9000 0x1000 >;
				clock-frequency = < 0x186a0 >;
				interrupts = < 0x9 0x1 >;
				easydma-maxcnt-bits = < 0xd >;
				status = "disabled";
				pinctrl-0 = < &i2c1_default >;
				pinctrl-1 = < &i2c1_sleep >;
				pinctrl-names = "default", "sleep";
			};
			i2c2: i2c@a000 {
				compatible = "nordic,nrf-twim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0xa000 0x1000 >;
				clock-frequency = < 0x186a0 >;
				interrupts = < 0xa 0x1 >;
				easydma-maxcnt-bits = < 0xd >;
				status = "disabled";
			};
			i2c3: i2c@b000 {
				compatible = "nordic,nrf-twim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0xb000 0x1000 >;
				clock-frequency = < 0x186a0 >;
				interrupts = < 0xb 0x1 >;
				easydma-maxcnt-bits = < 0xd >;
				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 = < 0xd >;
				status = "disabled";
			};
			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 = < 0xd >;
				status = "disabled";
			};
			spi2: spi@a000 {
				compatible = "nordic,nrf-spim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0xa000 0x1000 >;
				interrupts = < 0xa 0x1 >;
				max-frequency = < 0x7a1200 >;
				easydma-maxcnt-bits = < 0xd >;
				status = "disabled";
			};
			spi3: spi@b000 {
				compatible = "nordic,nrf-spim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0xb000 0x1000 >;
				interrupts = < 0xb 0x1 >;
				max-frequency = < 0x7a1200 >;
				easydma-maxcnt-bits = < 0xd >;
				status = "okay";
				cs-gpios = < &gpio0 0x7 0x1 >;
				pinctrl-0 = < &spi3_default >;
				pinctrl-1 = < &spi3_sleep >;
				pinctrl-names = "default", "sleep";
				w25q01jv: w25q01jv@0 {
					compatible = "jedec,spi-nor";
					reg = < 0x0 >;
					spi-max-frequency = < 0x2625a00 >;
					wp-gpios = < &gpio0 0x8 0x1 >;
					hold-gpios = < &gpio0 0xa 0x1 >;
					size = < 0x2000000 >;
					has-dpd;
					t-enter-dpd = < 0xbb8 >;
					t-exit-dpd = < 0x7530 >;
					jedec-id = [ EF 40 21 ];
					partitions {
						compatible = "fixed-partitions";
						#address-cells = < 0x1 >;
						#size-cells = < 0x1 >;
						lfs1_part: partition@0 {
							label = "littlefs_storage";
							reg = < 0x0 0x2000000 >;
						};
					};
				};
			};
			pwm0: pwm@21000 {
				compatible = "nordic,nrf-pwm";
				reg = < 0x21000 0x1000 >;
				interrupts = < 0x21 0x1 >;
				status = "disabled";
				#pwm-cells = < 0x3 >;
			};
			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 >;
			};
			gpio0: gpio@842500 {
				compatible = "nordic,nrf-gpio";
				gpio-controller;
				reg = < 0x842500 0x300 >;
				#gpio-cells = < 0x2 >;
				status = "okay";
				port = < 0x0 >;
				gpiote-instance = < &gpiote >;
				phandle = < 0x8 >;
			};
			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 >;
			};
			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 {
					#address-cells = < 0x1 >;
					#size-cells = < 0x1 >;
					compatible = "nordic,nrf-gpregret";
					reg = < 0x551c 0x1 >;
					status = "okay";
				};
				gpregret2: gpregret2@5520 {
					#address-cells = < 0x1 >;
					#size-cells = < 0x1 >;
					compatible = "nordic,nrf-gpregret";
					reg = < 0x5520 0x1 >;
					status = "okay";
				};
			};
			wdt: wdt0: watchdog@18000 {
				compatible = "nordic,nrf-wdt";
				reg = < 0x18000 0x1000 >;
				interrupts = < 0x18 0x1 >;
				status = "okay";
			};
			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 >;
				phandle = < 0xc >;
			};
			timer2: timer@11000 {
				compatible = "nordic,nrf-timer";
				status = "disabled";
				reg = < 0x11000 0x1000 >;
				cc-num = < 0x6 >;
				max-bit-width = < 0x20 >;
				interrupts = < 0x11 0x1 >;
				prescaler = < 0x0 >;
			};
		};
		gpiote: gpiote1: gpiote@40031000 {
			compatible = "nordic,nrf-gpiote";
			reg = < 0x40031000 0x1000 >;
			interrupts = < 0x31 0x5 >;
			status = "okay";
			instance = < 0x1 >;
			phandle = < 0xb >;
		};
	};
	pinctrl: pin-controller {
		compatible = "nordic,nrf-pinctrl";
		uart0_default: uart0_default {
			phandle = < 0x2 >;
			group1 {
				psels = < 0x6 >, < 0x10005 >;
			};
		};
		uart0_sleep: uart0_sleep {
			phandle = < 0x3 >;
			group1 {
				psels = < 0x6 >, < 0x10005 >;
				low-power-enable;
			};
		};
		uart1_default: uart1_default {
			phandle = < 0x4 >;
			group1 {
				psels = < 0x17 >, < 0x10018 >;
			};
		};
		uart1_sleep: uart1_sleep {
			phandle = < 0x5 >;
			group1 {
				psels = < 0x17 >, < 0x10018 >;
				low-power-enable;
			};
		};
		i2c1_default: i2c1_default {
			phandle = < 0x6 >;
			group1 {
				psels = < 0xc001a >, < 0xb001b >;
			};
		};
		i2c1_sleep: i2c1_sleep {
			phandle = < 0x7 >;
			group1 {
				psels = < 0xc001a >, < 0xb001b >;
				low-power-enable;
			};
		};
		spi3_default: spi3_default {
			phandle = < 0x9 >;
			group1 {
				psels = < 0x4000b >, < 0x50009 >, < 0x6001c >;
			};
		};
		spi3_sleep: spi3_sleep {
			phandle = < 0xa >;
			group1 {
				psels = < 0x4000b >, < 0x50009 >, < 0x6001c >;
				low-power-enable;
			};
		};
	};
	rng_hci: entropy_bt_hci {
		compatible = "zephyr,bt-hci-entropy";
		status = "okay";
	};
	sw_pwm: sw-pwm {
		compatible = "nordic,nrf-sw-pwm";
		status = "disabled";
		generator = < &timer1 >;
		clock-prescaler = < 0x0 >;
		#pwm-cells = < 0x3 >;
	};
	cpus {
		#address-cells = < 0x1 >;
		#size-cells = < 0x0 >;
		cpu@0 {
			device_type = "cpu";
			compatible = "arm,cortex-m33f";
			reg = < 0x0 >;
			#address-cells = < 0x1 >;
			#size-cells = < 0x1 >;
			mpu: mpu@e000ed90 {
				compatible = "arm,armv8m-mpu";
				reg = < 0xe000ed90 0x40 >;
				arm,num-mpu-regions = < 0x10 >;
			};
		};
	};
	psa_rng: psa-rng {
		compatible = "zephyr,psa-crypto-rng";
		status = "okay";
	};
	leds {
		compatible = "gpio-leds";
		ledr: led_r {
			label = "LED_R";
			gpios = < &gpio0 0x0 0x1 >;
		};
		ledg: led_g {
			label = "LED_G";
			gpios = < &gpio0 0x1 0x1 >;
		};
		ledb: led_b {
			label = "LED_B";
			gpios = < &gpio0 0x2 0x1 >;
		};
	};
	reserved-memory {
		#address-cells = < 0x1 >;
		#size-cells = < 0x1 >;
		ranges;
		sram0_s: image_s@20000000 {
			reg = < 0x20000000 0x16000 >;
		};
		sram0_modem: image_modem@20016000 {
			reg = < 0x20016000 0xa000 >;
		};
		sram0_ns: image_ns@20020000 {
			reg = < 0x20020000 0x20000 >;
		};
	};
};

prj.conf

# Network
CONFIG_NETWORKING=y
CONFIG_NET_NATIVE=n
CONFIG_NET_SOCKETS=y
CONFIG_NET_SOCKETS_OFFLOAD=y
CONFIG_NET_SOCKETS_POSIX_NAMES=y

# Modem library
CONFIG_NRF_MODEM_LIB=y
CONFIG_NRF_MODEM_LIB_TRACE=y
CONFIG_NRF_MODEM_LIB_TRACE_BACKEND_UART=y
CONFIG_UART_ASYNC_API=y
CONFIG_SERIAL=y


# AT host library
CONFIG_AT_HOST_LIBRARY=y
CONFIG_UART_INTERRUPT_DRIVEN=y

# Stacks and heaps
CONFIG_MAIN_STACK_SIZE=3072
CONFIG_HEAP_MEM_POOL_SIZE=16384

and my overlay

/ {
    chosen {
        zephyr,modem-trace-uart = &uart1;
    };
};

&i2c1 {
    status = "disabled";
};

&uart1 {
	status = "okay";
    current-speed = <1000000>;
    pinctrl-0 = <&uart1_default>;
    pinctrl-1 = <&uart1_sleep>;
    pinctrl-names = "default", "sleep";
};

RE: Can' get modem trace from custom board

Hakon — Thu, 05 Jun 2025 12:30:50 GMT

You should make sure that the uart instance used for modem trace is enabled and working. This can be checked in zephyr.dts.

[quote user="simon884"]Ok I think I've found the root issue for my bad/corrupted data coming from uart1, the issue was TF-M.[/quote]

I think this part of the documentation can be helpful. https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/app_dev/device_guides/nrf91/nrf91_snippet.html#tfm-enable-share-uart

RE: Can' get modem trace from custom board

simon884 — Tue, 03 Jun 2025 07:25:33 GMT

Ok I think I've found the root issue for my bad/corrupted data coming from uart1, the issue was TF-M. So here is what I have try create new build configuration select my custom board and add 2 snipets:

nrf91-modem-trace-uart and tfm-enable-share-uart

If I open serial temrinal (selecting terminal serial port in cellular monitor) when I clicked on start button I can see AT+CGMR send.

But no return, it's look like my uart1 doesn't receive/transmit anything. Because if I send AT+CGMR to uart0 I got an answer.

It's look like AT command only works on UART0 and not on UART1, and I pressume cellular monitor use AT command...

should I specify wich uart is use with at_host config ?

My dts

/dts-v1/;

/ {
	#address-cells = < 0x1 >;
	#size-cells = < 0x1 >;
	model = "Nordic Custom NRF9151";
	compatible = "nordic,nrf9151-dk-nrf9151";
	chosen {
		zephyr,entropy = &psa_rng;
		zephyr,flash-controller = &flash_controller;
		zephyr,console = &uart0;
		zephyr,shell-uart = &uart0;
		zephyr,uart-mcumgr = &uart0;
		zephyr,flash = &flash0;
		zephyr,sram = &sram0_ns;
		zephyr,code-partition = &slot0_ns_partition;
		nordic,modem-trace-uart = &uart1;
	};
	aliases {
	};
	soc {
		#address-cells = < 0x1 >;
		#size-cells = < 0x1 >;
		compatible = "nordic,nrf9151-laca", "nordic,nrf9120", "nordic,nrf91", "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";
		};
		sram0: memory@20000000 {
			compatible = "mmio-sram";
			reg = < 0x20000000 0x40000 >;
		};
		peripheral@40000000 {
			#address-cells = < 0x1 >;
			#size-cells = < 0x1 >;
			ranges = < 0x0 0x40000000 0x10000000 >;
			flash_controller: flash-controller@39000 {
				compatible = "nordic,nrf91-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 0x35000 >;
						};
						slot1_partition: partition@85000 {
							label = "image-1";
							reg = < 0x85000 0x40000 >;
						};
						slot1_ns_partition: partition@c5000 {
							label = "image-1-nonsecure";
							reg = < 0xc5000 0x35000 >;
						};
						storage_partition: partition@fa000 {
							label = "storage";
							reg = < 0xfa000 0x6000 >;
						};
					};
				};
			};
			adc: adc@e000 {
				compatible = "nordic,nrf-saadc";
				reg = < 0xe000 0x1000 >;
				interrupts = < 0xe 0x1 >;
				status = "okay";
				#io-channel-cells = < 0x1 >;
			};
			dppic: dppic@17000 {
				compatible = "nordic,nrf-dppic";
				reg = < 0x17000 0x1000 >;
				status = "okay";
			};
			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";
			};
			ipc: ipc@2a000 {
				compatible = "nordic,nrf-ipc";
				reg = < 0x2a000 0x1000 >;
				interrupts = < 0x2a 0x1 >;
				status = "okay";
			};
			i2s0: i2s@28000 {
				compatible = "nordic,nrf-i2s";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0x28000 0x1000 >;
				interrupts = < 0x28 0x1 >;
				status = "disabled";
			};
			kmu: kmu@39000 {
				compatible = "nordic,nrf-kmu";
				reg = < 0x39000 0x1000 >;
				interrupts = < 0x39 0x1 >;
				status = "okay";
			};
			pdm0: pdm@26000 {
				compatible = "nordic,nrf-pdm";
				reg = < 0x26000 0x1000 >;
				interrupts = < 0x26 0x1 >;
				status = "disabled";
			};
			regulators: regulator@4000 {
				compatible = "nordic,nrf-regulators";
				reg = < 0x4000 0x1000 >;
				status = "okay";
			};
			vmc: vmc@3a000 {
				compatible = "nordic,nrf-vmc";
				reg = < 0x3a000 0x1000 >;
				status = "okay";
			};
			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";
			};
			uart1: uart@9000 {
				compatible = "nordic,nrf-uarte";
				reg = < 0x9000 0x1000 >;
				interrupts = < 0x9 0x1 >;
				status = "okay";
				current-speed = < 0xf4240 >;
				pinctrl-0 = < &uart1_default >;
				pinctrl-1 = < &uart1_sleep >;
				pinctrl-names = "default", "sleep";
			};
			uart2: uart@a000 {
				compatible = "nordic,nrf-uarte";
				reg = < 0xa000 0x1000 >;
				interrupts = < 0xa 0x1 >;
				status = "disabled";
			};
			uart3: uart@b000 {
				compatible = "nordic,nrf-uarte";
				reg = < 0xb000 0x1000 >;
				interrupts = < 0xb 0x1 >;
				status = "disabled";
			};
			i2c0: i2c@8000 {
				compatible = "nordic,nrf-twim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0x8000 0x1000 >;
				clock-frequency = < 0x186a0 >;
				interrupts = < 0x8 0x1 >;
				easydma-maxcnt-bits = < 0xd >;
				status = "disabled";
			};
			i2c1: i2c@9000 {
				compatible = "nordic,nrf-twim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0x9000 0x1000 >;
				clock-frequency = < 0x186a0 >;
				interrupts = < 0x9 0x1 >;
				easydma-maxcnt-bits = < 0xd >;
				status = "disabled";
				pinctrl-0 = < &i2c1_default >;
				pinctrl-1 = < &i2c1_sleep >;
				pinctrl-names = "default", "sleep";
			};
			i2c2: i2c@a000 {
				compatible = "nordic,nrf-twim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0xa000 0x1000 >;
				clock-frequency = < 0x186a0 >;
				interrupts = < 0xa 0x1 >;
				easydma-maxcnt-bits = < 0xd >;
				status = "disabled";
			};
			i2c3: i2c@b000 {
				compatible = "nordic,nrf-twim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0xb000 0x1000 >;
				clock-frequency = < 0x186a0 >;
				interrupts = < 0xb 0x1 >;
				easydma-maxcnt-bits = < 0xd >;
				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 = < 0xd >;
				status = "disabled";
			};
			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 = < 0xd >;
				status = "disabled";
			};
			spi2: spi@a000 {
				compatible = "nordic,nrf-spim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0xa000 0x1000 >;
				interrupts = < 0xa 0x1 >;
				max-frequency = < 0x7a1200 >;
				easydma-maxcnt-bits = < 0xd >;
				status = "disabled";
			};
			spi3: spi@b000 {
				compatible = "nordic,nrf-spim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0xb000 0x1000 >;
				interrupts = < 0xb 0x1 >;
				max-frequency = < 0x7a1200 >;
				easydma-maxcnt-bits = < 0xd >;
				status = "okay";
				cs-gpios = < &gpio0 0x7 0x1 >;
				pinctrl-0 = < &spi3_default >;
				pinctrl-1 = < &spi3_sleep >;
				pinctrl-names = "default", "sleep";
				w25q01jv: w25q01jv@0 {
					compatible = "jedec,spi-nor";
					reg = < 0x0 >;
					spi-max-frequency = < 0x2625a00 >;
					wp-gpios = < &gpio0 0x8 0x1 >;
					hold-gpios = < &gpio0 0xa 0x1 >;
					size = < 0x2000000 >;
					has-dpd;
					t-enter-dpd = < 0xbb8 >;
					t-exit-dpd = < 0x7530 >;
					jedec-id = [ EF 40 21 ];
					partitions {
						compatible = "fixed-partitions";
						#address-cells = < 0x1 >;
						#size-cells = < 0x1 >;
						lfs1_part: partition@0 {
							label = "littlefs_storage";
							reg = < 0x0 0x2000000 >;
						};
					};
				};
			};
			pwm0: pwm@21000 {
				compatible = "nordic,nrf-pwm";
				reg = < 0x21000 0x1000 >;
				interrupts = < 0x21 0x1 >;
				status = "disabled";
				#pwm-cells = < 0x3 >;
			};
			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 >;
			};
			gpio0: gpio@842500 {
				compatible = "nordic,nrf-gpio";
				gpio-controller;
				reg = < 0x842500 0x300 >;
				#gpio-cells = < 0x2 >;
				status = "okay";
				port = < 0x0 >;
				gpiote-instance = < &gpiote >;
				phandle = < 0x8 >;
			};
			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 >;
			};
			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 {
					#address-cells = < 0x1 >;
					#size-cells = < 0x1 >;
					compatible = "nordic,nrf-gpregret";
					reg = < 0x551c 0x1 >;
					status = "okay";
				};
				gpregret2: gpregret2@5520 {
					#address-cells = < 0x1 >;
					#size-cells = < 0x1 >;
					compatible = "nordic,nrf-gpregret";
					reg = < 0x5520 0x1 >;
					status = "okay";
				};
			};
			wdt: wdt0: watchdog@18000 {
				compatible = "nordic,nrf-wdt";
				reg = < 0x18000 0x1000 >;
				interrupts = < 0x18 0x1 >;
				status = "okay";
			};
			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 >;
				phandle = < 0xc >;
			};
			timer2: timer@11000 {
				compatible = "nordic,nrf-timer";
				status = "disabled";
				reg = < 0x11000 0x1000 >;
				cc-num = < 0x6 >;
				max-bit-width = < 0x20 >;
				interrupts = < 0x11 0x1 >;
				prescaler = < 0x0 >;
			};
		};
		gpiote: gpiote1: gpiote@40031000 {
			compatible = "nordic,nrf-gpiote";
			reg = < 0x40031000 0x1000 >;
			interrupts = < 0x31 0x5 >;
			status = "okay";
			instance = < 0x1 >;
			phandle = < 0xb >;
		};
	};
	pinctrl: pin-controller {
		compatible = "nordic,nrf-pinctrl";
		uart0_default: uart0_default {
			phandle = < 0x2 >;
			group1 {
				psels = < 0x6 >, < 0x10005 >;
			};
		};
		uart0_sleep: uart0_sleep {
			phandle = < 0x3 >;
			group1 {
				psels = < 0x6 >, < 0x10005 >;
				low-power-enable;
			};
		};
		uart1_default: uart1_default {
			phandle = < 0x4 >;
			group1 {
				psels = < 0x17 >, < 0x10018 >;
			};
		};
		uart1_sleep: uart1_sleep {
			phandle = < 0x5 >;
			group1 {
				psels = < 0x17 >, < 0x10018 >;
				low-power-enable;
			};
		};
		i2c1_default: i2c1_default {
			phandle = < 0x6 >;
			group1 {
				psels = < 0xc001a >, < 0xb001b >;
			};
		};
		i2c1_sleep: i2c1_sleep {
			phandle = < 0x7 >;
			group1 {
				psels = < 0xc001a >, < 0xb001b >;
				low-power-enable;
			};
		};
		spi3_default: spi3_default {
			phandle = < 0x9 >;
			group1 {
				psels = < 0x4000b >, < 0x50009 >, < 0x6001c >;
			};
		};
		spi3_sleep: spi3_sleep {
			phandle = < 0xa >;
			group1 {
				psels = < 0x4000b >, < 0x50009 >, < 0x6001c >;
				low-power-enable;
			};
		};
	};
	rng_hci: entropy_bt_hci {
		compatible = "zephyr,bt-hci-entropy";
		status = "okay";
	};
	sw_pwm: sw-pwm {
		compatible = "nordic,nrf-sw-pwm";
		status = "disabled";
		generator = < &timer1 >;
		clock-prescaler = < 0x0 >;
		#pwm-cells = < 0x3 >;
	};
	cpus {
		#address-cells = < 0x1 >;
		#size-cells = < 0x0 >;
		cpu@0 {
			device_type = "cpu";
			compatible = "arm,cortex-m33f";
			reg = < 0x0 >;
			#address-cells = < 0x1 >;
			#size-cells = < 0x1 >;
			mpu: mpu@e000ed90 {
				compatible = "arm,armv8m-mpu";
				reg = < 0xe000ed90 0x40 >;
				arm,num-mpu-regions = < 0x10 >;
			};
		};
	};
	psa_rng: psa-rng {
		compatible = "zephyr,psa-crypto-rng";
		status = "okay";
	};
	leds {
		compatible = "gpio-leds";
		ledr: led_r {
			label = "LED_R";
			gpios = < &gpio0 0x0 0x1 >;
		};
		ledg: led_g {
			label = "LED_G";
			gpios = < &gpio0 0x1 0x1 >;
		};
		ledb: led_b {
			label = "LED_B";
			gpios = < &gpio0 0x2 0x1 >;
		};
	};
	reserved-memory {
		#address-cells = < 0x1 >;
		#size-cells = < 0x1 >;
		ranges;
		sram0_s: image_s@20000000 {
			reg = < 0x20000000 0x16000 >;
		};
		sram0_modem: image_modem@20016000 {
			reg = < 0x20016000 0xa000 >;
		};
		sram0_ns: image_ns@20020000 {
			reg = < 0x20020000 0x20000 >;
		};
	};
};

Hakon any thougths?

RE: Can' get modem trace from custom board

Hakon — Mon, 02 Jun 2025 13:19:51 GMT

Try setting

status = "okay"

for uart1 in your overlay file. If that doesn't work, you can post your zephyr.dts file.

RE: Can' get modem trace from custom board

simon884 — Tue, 20 May 2025 08:00:51 GMT

I hope so, because I really don't understand what happen

RE: Can' get modem trace from custom board

Hakon — Mon, 19 May 2025 07:29:05 GMT

I asked modem team for assistance. Hopefully they will know how to handle this.