VS Arduino - Arduino project (Teensy 3.6): hardware debugger interface J-Link absent

Apr 20^th, 2024 at 4:47am (UTC)

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VS Arduino › Visual Micro › Installation & Troubleshooting › Arduino project (Teensy 3.6): hardware debugger interface J-Link absent

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Arduino project (Teensy 3.6): hardware debugger interface J-Link absent (Read 1227 times)

labblduddel Newbies Offline Posts: 4 Joined: Nov 11^th, 2020	Arduino project (Teensy 3.6): hardware debugger interface J-Link absent Nov 12^th, 2020 at 10:45am	Print Post
	I’m a newcomer in this forum and have this problem in debugging Teensy 3.6 with J-Link: The System itselves works fine (test project: blink led) in serial debug mode, but when I choose “Debug: Hardware“, the device list contains only “Manual/Custom” and “GDBStub”. J-Link is missing there. Before started I did the following steps: - Installation of the Segger J-Link - downloading and extracting Arduino 1.8.13, - installation of Teensyduino 1.5.3 - installation of Visual Studio 2019 - integration of the”Arduino IDE for Visual Studio (Visual Micro)” with 45 day license - modify the Teensy 3.6 in the way described in https://mcuoneclipse.com/2017/04/29/modifying-the-teensy-3-5-and-3-6-for-arm-swd.... J-Link GDB Server V6.86 connects to the Teensy (target: MK66FX1M0xxx18) correctly via SWD-protokoll. The log file answers: “..... Connected to target, Waiting for GDB connection...”. Did I forget anything or is the debugger hardware not integrated in the 45 day test license? How can I integrate the J-Link? Thank you for your help!


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Simon@Visual Micro Administrator Offline Posts: 2174 Joined: Feb 13^th, 2019	Re: Arduino project (Teensy 3.6): hardware debugger interface J-Link absent Reply #1 - Nov 12^th, 2020 at 12:05pm	Print Post
	Thanks for the report, and at present we haven't integrated the JLink into the setup for Teensy at present, due the hardware modifications needed to the Teensy board. To integrate the JLink you would need to create a debugger.json file in the project, and add in the relevant commands for your board. We do have a video on achieving this for other boards using the JLink, and the instructions would be very similar as you are running the JLink software as well (you may need to take the base JSON from a different board which has the JLink already): Advanced GDB Configuration Using JLink Drivers and Software We will update this thread when any further workarounds or information is known.
	« Last Edit: Nov 12^th, 2020 at 1:41pm by Tim@Visual Micro »

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labblduddel Newbies Offline Posts: 4 Joined: Nov 11^th, 2020	Arduino project (Teensy 3.6): hardware debugger interface J-Link Reply #2 - Nov 13^th, 2020 at 1:53pm	Print Post
	Dear Simon, Thank you for your prompt and helpful reply. With the modified debugger.json file JLink does connect in vMicro to Teensy 3.6 board. But there is another problem: The ability for working with J-Link presumes removing the small Kinetis KL02Z processor, which acts as onboard interface and Bootloader between the Arduino IDE and the main processor ARM Cortex-M4F (look at: https://mcuoneclipse.com/2017/04/29/modifying-the-teensy-3-5-and-3-6-for-arm-swd...; The bad effect of removing this chip is making impossible uploading the program, because the USB-Port can’t work without its interface. Is there any solution for real hardware debugging with JLink? Is it possible without losing the USB-Port? Thank you for your help! @ Simon@Visual Micro


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Simon@Visual Micro Administrator Offline Posts: 2174 Joined: Feb 13^th, 2019	Re: Arduino project (Teensy 3.6): hardware debugger interface J-Link absent Reply #3 - Nov 13^th, 2020 at 1:59pm	Print Post
	Thanks for the update on the issues here... Could you send the JSON File which has worked for your debugger so we can review the changes? If the JLink works for debugging it should be possible to perform the upload using the JLink tools directly. It may also be possible to get Debug + Upload working via the OpenOCD tools we use normally in vMicro, and we can send back a test file for this after reviewing your JSON.


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labblduddel Newbies Offline Posts: 4 Joined: Nov 11^th, 2020	Arduino project (Teensy 3.6): hardware debugger interface J-Link Reply #4 - Nov 13^th, 2020 at 2:46pm	Print Post
	With this JSON File Teensy 3.6 will be connected, but the logfile shows, that reading of the registers doesn't work properly.

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labblduddel Newbies Offline Posts: 4 Joined: Nov 11^th, 2020	Re: Arduino project (Teensy 3.6): hardware debugger interface J-Link absent Reply #5 - Nov 13^th, 2020 at 2:48pm	Print Post
	Here are the pictures of the J-Link GDB Server logfile...

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