Recent Activities

Hi Simon, Can JLinkSWOViewerCLExe and JLink Commander sessions coexist at the same time? best regards Max

Hello, The SWO Viewer should be a suitable tool for this use case. It is included as part of the J-Link Software & Documentation Pack. For instructions on how to attach it to your target, please refer to: kb.segger.com/J-Link_SWO_Viewer#-swoattach Best…

Hello, Please note that the support period is not tied to the J-Link Software and Documentation Pack itself. Once your support period ends, you simply no longer have entitlement to direct technical support. Regarding your issue: Could you try…

Problem solved: The STM32WB55 requires writing double word (64-bit) to flash.

Same setup and conditions: Example for V8.24 ... working condition (Capture_V8_24.PNG). Example for V8.34 ... not working condition (Capture_V8_34.PNG). In addition, for SEGGER staff, release notes for V8.34 are still missing: Release notes for the…

Is it possible to flash the option bytes on an STM32WB55VC chip using Segger products (preferably J-Link or J-Trace). From the target menu (J-Flash) I do not see the (allow opt. bytes) for this chip. When I write to the option bytes registers directly…

Just upgraded from 3.38 to 3.38g I have an "intentional" divide by zero error to test HardFault handling .. when the exception fires, the Cortex-M UsageFault Exception window shows but the Exception Registers section is empty. This is using a SAME7021B…

I’m working in a production setup (not a development/debug session), where each board must be prepared before its main flash image is programmed. Our process is (simulated with EVK): 1. Connect to the MIMXRT1021-EVK via a Segger J-Link (SWD + SWO). 2. …

Hello, I have a custom flash loader that works with JLink and is able to do a basic operations like write, read, erase and L1 verification (L2 is not implemented for now). I'm using python pylink library to handle the JLink device and automate these…

Hi everyone, question for J-Link BASE Classic in combination with J-Link Software and Documentation pack versions (currently the latest version is V8.34). Is a J-Link Software and Documentation pack version somehow connected with the end of support…

I'm working on a project that uses a Nordic nRF chip and the Zephyr RTOS. I've started using SystemView to try and debug an issue that I believe is related to thread management. I set everything up correctly and I'm able to use SystemView, but after a…

Hey folks! Apologies if this has been answered before and my forum search skill are lacking. I'm trying to confirm my understanding of the behavior of "-speed auto" parameter of "JLinkGDBServerCL". Is it basically equal to "best possible speed given the…

Following the example MCE_ExecuteAESCryptedCode in STM32Cube for STM32H7S78-DK, I noticed that XSPIs are swapped wrt other examples. This is because AES decoding is supported by MCE1 only and this is hardware-linked to XSPI1. …

Hi Sarthak, Yes, WHEEL_MoveToPosEx() runs an animation but there is no interface to hook in custom code into this animation. My guess is, you want to create a GUI for selecting a date, and based on the month, you want to show a different amount of…

Hi Sarthak, Unfortunately, there currently are no such API functions to retrieve information about the current WHEEL mode(s). We will consider adding such functions with future updates. Best regards, Florian

Microchip ATSAMs70n20 If I step in disassembly, it is fine. but when I step in the c source, it crashes at the switch/case statement. key = getkey(); switch (key) // crash to hard fault if step this. { case RS_TRIG_CMD_PARTIAL: Mon May 05, 2025…

It appears that SEGGER does not specify which Linux distros and versions can be used to run SystemView. I'm hoping someone at Segger will know. These Segger webpages specify Linux can be used to run SystemView. But, the distros and versions are not…

Hello, I read this: kb.segger.com/ConfigTargetSettings()#Exclude_illegal_regions and I tried this script: forum.segger.com/index.php/Att…23f64a779dc8da06ce848e70d Then I try to attach to MIMXRT1021-EVK: /opt/SEGGER/JLink/JLinkExe -if SWD -speed auto…

Hello everyone, I’m using Segger J-Link v8.30 and an NXP RT1xxx MCU that boots from external QSPI-NOR flash mapped, for example, at 0x3000 0000. Although the NOR flash supports 4 KiB sector erases at the hardware level, J-Link Commander (and the GDB…

STLinkReflash is used to convert an ST-Link debugger to a Segger J-Link debugger. For STLinkReflash, I can't find specs for the Windows versions it officially runs on. In particular, does Segger support it on Windows 11? I'm hoping someone at Segger…