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  • Hi, We are already aware of a regression in the current V7.00 of the J-Link software, which affects exactly this device (actually it was me internally running into this). We are already working on a fix and plan to have it available by Friday.

  • That’s why I asked for additional info.... I already suspected that it is the rules file but now we know it. We will fix this in one of the next versions.

  • By the way: The correct tool to use for Flasher RX is the "J-Flash" software. The "Flasher V2.x" software is only compatible to the legacy Flasher 5 / Flasher 5 PRO programmers which do not even support RX. J-Flash is part of the software package:

  • There may be a misunderstanding here. You wrote: 1250000 baud => 1,250,000 baud => 1.25 MBaud The J-Link EDU V10 does not have any hardware UART on the VCOM pins, so it does things in software. This means it has a certain limit of what is doable. Max. baudrate for the V10 is about 180 kBaud. There is no way of unlocking higher baudrates for this model. As Nino wrote, the current ULTRA+ / PRO models support up to 10 MBaud. And before this comes up as a topic: Yes, we are aware of the FTDI USB to …

  • You have an TMS470R1VF67 but selected a TMS470R1B512 in the J-Link software. These two devices are not guaranteed to be compatible from the flash programming point of view. We do not give any warranty that what you are doing will work. You are on your own with this. The TMS470R1VF67 is not supported by J-Link and support is not planned to be added, as this is a legacy ARM7 based device and this is the 2nd request for supporting it we got, since the device was released by TI a looong time ago. So…

  • Hi Guillaume, Thanks for providing the log file. I do not see anything in the log file that indicates a crash / segmentation fault. The connection to the device is established, followed by a very loooong sequence of IsOpen() IsConnected() IsHalted() calls. In the end there is a Close() call and the log file is cleaned gracefully at the end. If a segmentation fault occurs, I would expect the software to crash somewhere, so we should see the log to stop abruptly, even in the middle of any API call…

  • Hello, So far, your chip seems to be the only one out there that does not support the traditional JTAG / SWD selection sequences. We do not have seen any other request reg. this in the last couple of years since we support SWD. There are currently no plans to add the Source Code (1 line)sequence within the next 6-12 months, as this makes the connection sequence for *all* other devices slower because J-Link does not know if it is talking to a device that needs this or supports this new special se…

  • Hi Christian, To answer your question reg. closing J-Flash with an error code if called with command line parameters, in case no license is found: We will think about that in the next team meeting which is scheduled for Tuesday. However, I cannot promise anything at this point. BR Alex

  • Hi, You are confusing J-Link name with hostname here. The -ip <Name> command was never meant to resolve hostnames but was meant to resolve J-Link nick names to an actual IP. J-Links can be discovered via a special UDP broadcast packet in LAN (This is what J-Link Configurator does to find and list them). The response also contains the nickname of the J-Link. The hostname of your machine / VM / docker container etc. is something completely different. IP connections made by J-Link utilities are not…

  • Hi, We need some add. information to be able to help here. 1. What does "unsuccessful" mean? (J-Link not listed in configurator anymore once switched to CMSIS-DAP mode? Listed but re-configure throws an error? If there is an error message, can you send a screenshot?) 2. Does it work under ArchLinux if JLinkConfigExe is started with superuser access rights? 3. Does it work under Windows?

  • Hi, If you can provide your S/N, we can tell you if your model supports “fixed VTref” and so can avoid having VTH connected.

  • I could think about rich-text-format (rtf) output or HTML as an option for streaming to out files. This would allow colored text. For rtf of course an editor with rtf support would need to be used but there are quite some out there

  • Hi, to a) Correct to b) Correct


    SEGGER - Alex - - J-Link/Flasher related


    Hi Jakob, There are 2 signals that sound very similar: nRST This is the reset pin of the MCU. This signal is used during programming. nTRST Test-logic-reset. Nowadays, most MCus do not even provide this signal. It is not really used during programming. So you can usually safely leave out this signal.

  • Hi, - Eval board or custom hardware? - Can you please get us a J-Link log file? ( - Is the board powered externally or by the J-Trace 5V output?

  • Quote from hrb: “ I tought the ST-Link might be not that different from the the one on the other discovery boards so it might work out of the box. ” Let me say it this way: Your assumption is wrong. This board implements an ST-LINK V3 which is fundamentally different to the V1 and V2 ones. It is more or less a complete redesign of ST-LINK. If you search this forum, you will find multiple threads where we say that we do not support the ST-LINK V3 and that there are no actual plans to do so. This …

  • Hi, Sorry to say that I have no idea what you are talking about. What is a “constraints file”? Actually, we are not chip / core designers, so not really heavy FPGA users. We do not really care about which pins you choose as the ARTY boards allow easy access to all of them Feel free to choose any pins.

  • Hi, Wrong forum. J-Flash Lite: SEGGER product. Seems to work fine. nrfjprog: NordicSemi product. Seems to work fine. nRF Connect Programmer: NordicSemi(?) product. Does not work. Problem inside this software, not J-Link. No support provided by SEGGER because it is not a SEGGER product. You better seek the Nordic forum for an answer reg. this. My guess: They have some kind of J-Link S/N filter in this tool and this filter does not cover the EDU Mini. We will consider this thread as closed.

  • Hi, We will order one as well and make sure that J-Link supports it. BR Alex

  • Hi, We have seen this before but only in combination with loading an RTOS plugin. As you also found out it is not a generic problem but only seems to happen under specific Ubuntu versions (18.x is fine, 20.x throws the error). It is a message from outside GDBServer (probably from GLIBC or so) that ends up in the terminal. When debugging the issue, there was a system call which triggered the error message but it was not obvious why because the buffer that was passed (to store a path) was way larg…