J-Link does not recognize the NRF54L15

[Evluma]

Issue with debug on the PDK eng_rev_B PCA10156

Segger does not recognize the chip and debug fails across multiple sample applications

debug message results:

JLinkGDBServerCL: SEGGER J-Link GDB Server V7.94i Command Line Version
JLinkGDBServerCL:
JLinkGDBServerCL: JLinkARM.dll V7.94i (DLL compiled Feb 7 2024 17:08:52)
JLinkGDBServerCL:
JLinkGDBServerCL: -----GDB Server start settings-----
JLinkGDBServerCL: GDBInit file: none
JLinkGDBServerCL: GDB Server Listening port: 59049
JLinkGDBServerCL: SWO raw output listening port: 2332
JLinkGDBServerCL: Terminal I/O port: 2333
JLinkGDBServerCL: Accept remote connection: localhost only
JLinkGDBServerCL: Generate logfile: off
JLinkGDBServerCL: Verify download: off
JLinkGDBServerCL: Init regs on start: off
JLinkGDBServerCL: Silent mode: on
JLinkGDBServerCL: Single run mode: on
JLinkGDBServerCL: Target connection timeout: 0 ms
JLinkGDBServerCL: ------J-Link related settings------
JLinkGDBServerCL: J-Link Host interface: USB
JLinkGDBServerCL: J-Link script: none
JLinkGDBServerCL: J-Link settings file: none
JLinkGDBServerCL: ------Target related settings------
JLinkGDBServerCL: Target device: cortex-m33
JLinkGDBServerCL: Target device parameters: none
JLinkGDBServerCL: Target interface: SWD
JLinkGDBServerCL: Target interface speed: 12000kHz
JLinkGDBServerCL: Target endian: little
JLinkGDBServerCL: =thread-group-added,id="i1" =cmd-param-changed,param="pagination",value="off" nrf_event_check (event=304, p_reg=p_reg@entry=0x500c6000) at C:/ncs/v2.7.0/modules/hal/nordic/nrfx/hal/nrf_common.h:264 264 return (bool)*(volatile const uint32_t *)((const uint8_t *)p_reg + (uint32_t)event);
[New Thread 536884376]
[New Thread 536884176]
[New Thread 536878720]

These sample application worked on the nRF54840 Dev board, built from the same code alternate build, and are from 2.7.0 

Segger kicks up the following screens when trying to debug

Thanks in advance

[Simonr]

Hi

Are you using SEGGER Embedded studios here or the just a J-Link viewer of some kind? SEGGER Embedded Studios does not support the nRF54 series, as we have moved to the nRF Connect SDK which is a Zephyr RTOS based SDK. Development is recommended to be done in VS Code with the nRF Connect extension, and building/flashing is done with west.

Best regards,

Simon

[Evluma]

Evluma said:

JLinkGDBServerCL: =thread-group-added,id="i1" =cmd-param-changed,param="pagination",value="off" nrf_event_check (event=304, p_reg=p_reg@entry=0x500c6000) at C:/ncs/v2.7.0/modules/hal/nordic/nrfx/hal/nrf_common.h:264 264 return (bool)*(volatile const uint32_t *)((const uint8_t *)p_reg + (uint32_t)event);

We are using the nRF Connect SDK with Zephyr.

The error is occuring while trying to program and debug an nRF54L15 chip through VSCode. Also worth noting that using the Nordic Programming application I am unable to read the memory of a nRF54L15.

Programmer v4.4.2, PCA10156, NRF54L15_xxAA_ENGB

11:32:06.355

Reading memory for Application core

11:32:06.552

Error: Failed with exit code 1. One or more batch tasks failed: - [Probe] The fw-read operation is not supported, code: Generic. Message: Batch task fw-read failed, [Probe] The fw-read operation is not supported.

[Simonr]

Hi

Then I assume you have the nRF Connect SDK and all its prerequisites installed on your computer as well. If so, can you try running an nrfutil device recover command from your command line tools to see if you can recover the nRF54L15 DK, since if the Programmer app doesn't work for programming the device either. It must be either that or that the correct versions of NCS prerequisites not being installed on your computer.

Best regards,

Simon

[Evluma]

I believe I had a complete install but had no luck in programming the nrf54l15.

I completely removed VC and all nrf tool chains and SDKs

then used Chocolatey to insure I had the support packages and up to date environments

then reinstalled VC and then the tool chain and SDK through VC and this has cleared the issue.

I can now program the DK with applications compiled in VC.

Jlink support is still to be added for the nRF54 chips so that their memory can be read and the RTT can be found automatically for debug support in VC.

Thanks, I miss Segger Embedded Studio