Hi,
I am having a problem. When trying to initiate Debug, the probe is detected:
But when I pressed OK button, it cannot access to SWD link:
I tried with reset button, restart my computer, but none of them work. How can I fix this?
Best regard,
已解决! 转到解答。
Hi Nguyen,
Do you have both this headers placed? This are the SWD lines connected from the debugger to the MCU.
Also you could try updating the firmware debugger, press the reset button while powering up the board. A mass storage device will be enumerated, download the firmware from the following link and drag and drop to this device.
Let me know if this helps you.
Best Regards,
Alexis Andalon
Hi Nguyen,
Can you let me know which MCUXpresso version are you using and could you try updating the firmware to the one from segger and do the following test?
-Open the J-Link Commander and check that the power is around 3.3 V
-Type the following commands:
-connect
-? (Found your MCU)
-s (SWD)
-Enter (Default)
And check if it can be connected, if this doesn't happen try the command: "unlock kinetis"
Let me know if this helps you.
Best Regards,
Alexis Andalon
Hi Nguyen,
Could you try using the latest MCUXpresso version (11.1.0)?
Also, this is a new brand freedom? or did this happen after you flash a program for the first time.
Best Regards,
Alexis Andalon
Hi,
I have tried with the lastest MCUXpresso version but it still did not work.
In addition, this freedom board is not the new one. Before that, It worked well. I just have met this issue for a couple days.
Best regard.
Hi Nguyen,
Could you try again to change the debugger firmware to the DAPLink one?
After this opening the J-Link Commander the following log should appear, if this no happens something is wrong with the K20 debugging chip.
Best Regards,
Alexis Andalon
Hi,
After a few times I used the J-link debugger to program my board, I tried again with the OpenSDA interface and it worked normally. I don't understand the reason behind this but my board now works well.
Best regards,
Thanks.