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Thanks for your reply Alex. I did some more testing, I moved one Jlink connection to one of the USB port on the computer and let the other Jlink connected to the USB hub, this time it works without any issues! So you may be right about the current being insufficient. It didn't occur to me previously that this might be the root cause since the 'disruption' occurs only one time, at the beginning. Henry

Sorry, I must add that when only one Jlink is connected to the computer this problem does not occur.

Hello, I have one Jlink Ultra and one Jlink Base Compact connected to my computer (via a USB hub). I used these Jlinks to debug two separate MCUs on my board. One instance of SES (7.30) is associated to the Jlink Ultra, and another separate instance of SES is associated with the Jlink Base. The problem that I'm seeing is this: The first time I connect to the board using any one of the two Jlinks my computer immediately goes haywire, screen goes black, the USB seems to get disconnected and then c…

@ifmPhilipp thanks so much!

I did find a document that specifically mentions the very question I was asking, it's the J-link user guide document (UM08001, Jun 2021, page 300), but the information is far from clear. it just says "For direct SPI flash programming, J-Link needs to be wired to the SPI flash in a specific way. For more information about the pinout for the J-Link SPI target interface, please refer to the J-Link Manual (UM08001)." ~ it's referring to the document itself, I searched the whole document but couldn't…

The Segger Wiki page for J-Flash SPI says: "J-Flash SPI is able to program all kinds of SPI flashes, even if the CPU connected to them, is not supported by J-Link / Flasher. This is because J-Flash SPI communicates directly with the SPI flash, bypassing all other components of the hardware. Directly communicates with the SPI flash via SPI protocol, no MCU in between required." So if I understand this correctly, J-Flash SPI will interface directly to a SPI flash chip via a J-link or a Flasher uni…

I must add, the problem arises ONLY when the DMA module is selected for examination, selecting other modules or peripherals worked fine.

I'm working with the NXP iMXRT1011 chip using Segger Embedded Studio. For debugging. I managed to get the SVD file (MIMXRT1011_Registers.svd, dated August 2022) which was included in an installation package Rowley Associates IDE. However I encountered an issue when using that SVD file during debugging, every time I selected the DMA0 module for examination, Segger IDE becomes completely unresponsive when debugging is started, Windows task manager shows that memory usage shot up to over 250MB, The…

Is there any way to make the address information appear in the Assembler listing file generated when a project is built? Currently what I'm seeing in the assembler listing file is only what seems like a byte index and the instruction, beside of course the assembly codes. The .elf file which is also generated provides both the assembly listing AND the addresses, however I found that this is only true when the codes resides in flash, when I relocated a part of the codes to SRAM that part of the co…