SEGGER - Alex Administrator

Can you please PM me the S/N of your J-Trace unit?

Not being able to specify the SWO speed is bad… Having it on “max possible” is OK but not being able to change that setting is a bad thing because different models have different max. speeds May be worth opening a ticket at Renesas for this because it…

Hi Steven, I see that you have been in touch with Richard W. at TI. A very capable guy… Pretty sure he can help you out. As J-Link’s Cortex-M4 support is generally working and we are not talking about an issue with our flash algo etc. but a connect…

I doubt that it is a problem with the ULTRA+ firmware but more a setup issue. Probably you have set the SWO speed to “max” and the ULTRA+ (which is capable to handle up to 100 MHz SWO speeds) leads to settings that exceed the max. speed of the…

Hi Pedro, What unit do you use? (Can you please PM me the S/N?) There is currently no official way to do this via J-Link Commander but we should be able to add something like that. Way easier than adding a whole command line handling to a heavy, almost…

Hi Steve, Sounds a bit like the M4 is clocked, so the AHB-AP debug domain is accessible but the core itself is still held in reset. This would explain why it is not responding to halt requests etc. Is that possible in your case?

Hi, There is no RTT support for ARM11, as ARM11 does not support background memory access. The “emulation mode” is also not available for ARM11

That’s not how J-Link is intended to work. Nope, there is no possibility doing what you plan to do, with the available script etc. APIs. We strongly recommend to not further pursue this path but select the correct device in the IDE.

Hi, I see. I will discuss this internally. In the meantime: Current (Windows) installers do not need admin rights for installation. You can also select “install only for this user”, then not even Program Files is touched but the software is…

There is no “reset” API function available from within a script file because the reset itself may call script file functions like BeforeReset(), AfterReset() and ResetTarget(). What core are you working on? Cortex-M…, Cortex-A…, RISC-V, …?

Hi, Why do you think you need the manual update? What is the problem with the regular update path? We manual update is more something like a last resort for units that have a correctly signed etc. but faulty functioning firmware that can no longer be…

Not sure if you understood Fabian’s post… “Sinply pulling nReset” is something that can disturb a debug (and so RTT) session. Pulling the reset pin may also reset the debug interface and cause a connection loss. Even if it does not, it may cause…

I do not specifically know the KV30 into much detail but have worked on many of the various Kinetis flash algorithms for J-Link. For all Kinetis I have encountered, the debug interface does not provide a way to get the backdoor key into the chip. The…

Are you serious? You are wondering that something prevents your target from entering low power modes after you KILL GDBServer and so do not even give it a chance to perform a clean shutdown & clearing debug bits that very possibly may inhibit low power…

Is the target a 3.3V one? If not, that’s the culprit, as the EDU Mini does not have level shifters and therefore only supports 3.3V debug signals. Another thing is TRST. Not sure if the AM33 59 needs that pin… BR Alex

Hi, Here you go: wiki.segger.com/J-Link_Command_Strings#JLinkDevicesXMLPath wiki.segger.com/J-Link_Command…ng_J-Link_Command_Strings

The EDU mini is not guaranteed to work with 1.8V targets, only with 3.3V ones. BR Alex