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help with ST link

ulao
Associate III

i have a blue EVAL board (STM32H735G-DK) that I think stopped working.

There is a ST-com LED that starts green but changes to RED and stays that way. The driver shows up on COM 3 in device manger. The STM32CubeIDE that I use does this at time but this time its not finding it.

Target no device found
Error in initializing ST-LINK device.

I also tried STM32Cube Programmer but never used this before. It seems not to find it either. I'm sure its ok as it comes up and runs fine and installs a driver. I just have no info and how to troubles shoot this. Could the com port change, is that set somewhere in the IDE?Did I bump a jumper? This is windows 11.

 

If I reboot the ST-link com lights blinks and goes green. But still no luck programming. If I unplug the USB and plug it back in the light stays red.

10 REPLIES 10
ulao
Associate III

yeah but I can power up the whit board and jump the 3v3 from the output of that chip to the output of the other and it works.