Search Results

As I started typing this, I realized what the problem is: it's my error, not SEGGER's. But I'm posting this with the hope that it might save someone else some trouble. Summary: Make sure that you've selected the correct device / core. If you don't, you'll likely get the "CPU could not be halted" error. In my case, I'm working on several projects. One of them uses the ATSAMS70N19A, the other the ATSAME54P20A. When I start SEGGER J-Link Commander, I've gotten in the habit of reflexively typing [En…

I may have bricked my ATSAME54P20A: I was on the way to enabling the watchdog timer, which requires setting the NVM fuses. But when it failed to run, I decided to erase the chip with J-Link Base / J-Link Commander and start over. However, the "erase" command times out with the message: Source Code (3 lines) (That is a suspicious looking PC!) Any suggestions on how to get over this bump would be appreciated! Full transcript follows: Source Code (74 lines)

[Cross posted from a recently submitted support ticket...] I'm developing ARM based apps for the Microchip SAME54. I'm observing that my apps won't run when the SEGGER J-Link is connected: I need to disconnect the J-Link and pulse the reset line to start the app. This works, but it's far from optimal when I'm making many rapid changes. (Note that the apps DO run under the debugger -- that's not an issue, but I need to verify the apps when NOT running under the debugger.) My IDE is the Microchip …

I have suspicions that my J-Link Base is having some issues. For example, it appears to be unable to reset the target processor (and I've swapped in a few different target processors). Is there some diagnostic, or at least simple tests I can run? Just as good: will re-flashing its firmware completely erase its state?

Environment: - J-Link Commander V7.54b - J-Flash V7.54b - Windows 11 Pro Version 10.0.22623 Build 22623 - J-Link Base V10 .1 (not sure how I find the firmware vesrion - Target MCU: ATSAME54P20, SWD, 4000 KHz When I issue command Target => Manual Command => Erase Chip, the log prints out the following: Source Code (44 lines)The questions: - I'd like to make sure the chip is properly erased. How do I interpret this error message? - Is there something I can do to properly erase the chip?

Update: I'm prepared to blame this as a hardware problem: I connected a second (putatively) identical board, and it connects and programs without any error.

J-Link Commander is unable to connect to my ATSAMS70N19A, and I'm not sure why. Some comments: - The J-Link Base is running V7.62A (i.e. recent) - VTref is 3.3V as expected - On the SWD connector, I observe RESET_ going low for 50 mSec, then a clean clock with data - As suggested by J-Link cannot connect to the CPU, I've reduced the clock rate to 100KHz Here's the J-Link Commander output: Source Code (39 lines)And the corresponding traffic over the SWD port. The top group is the zoomed out view,…

I'm running my J-Link base from J-Link Commander V6.62d. When I try to erase my SAME54P20 via SWD, I get an error message "Error while determining flash info". I suspect this is a benign error, since the flash appears to be erased after this command. Is this a known problem, or a user error? Full printout below: SEGGER J-Link Commander V6.62d (Compiled Mar 2 2020 09:23:14) DLL version V6.62d, compiled Mar 2 2020 09:22:41 Connecting to J-Link via USB...O.K. Firmware: J-Link V10 compiled Jan 7 202…

I have a mildly complex JLink.exe script that gets launched from a .bat file via Source Code (1 line)... and I'd like to make it so others (including my future self) can understand what's going on in myscript.jlink. Is there a way to insert comments into a jlink script?

I've started using Hyper-V on my Windows 10 system in order to sandbox different development environments. But my J-Link isn't showing up inside the Hyper-V virtual machine. Reading the web, it appears that (perhaps) Hyper-V will only allow storage devices to be passed through from the primary environment. Is this true? Or is it possible to communicate with the J-Link from inside a Hyper-V environment? If so, how? Thanks!

My J-Link EDU is unable to connect with my target processor (an ATSAME54P20). Here's what J-Link Commander reports upon startup: Source Code (13 lines) The suspicious part is "VTref=0.000V". But when I measure the voltage on pin 1 of the 20 pin JTAG connector, I see 3.3V. Does this indicate a faulty J-Link? Or are there other things that could cause this?

I've developed a Cortex-M4 program under IAR Workbench. In the program, printf() prints to the built-in IAR terminal, and getchar() reads from the built-in terminal. I'm using a J-Link in SWO mode for communication. I've attached a screenshot of the IAR terminal. Now I'd like a colleague to test the same code on his machine. He has a J-Link, but not an IAR license. Is there some terminal-like application that does the same thing, that is, read and write ASCII characters via the J-Link? (I've tri…

I've recently switched to Embedded Studio, and there are many things to like about it. One thing that still tripping me up, though: I've been editing using Emacs-style key bindings since the Pleistocene epoch (give or take), and it's hard for me to give that up. Is there a way to install a "standard" set of Emacs style key bindings (CTRL-A for beginning of line, CTRL-E for end of line, etc...)?