Portenta H7 Lite not recognized by macOS or Windows 10 over USB-C

Official Hardware Portenta Family Portenta H7
1

Hi all,

I have a rather peculiar problem with the Portenta H7 Lite.
It is not being recognized by Windows or macOS and does not show as an uploadable board in the Arduino IDE (Version: 2.1.0; Date: 2023-04-19T15:31:10.185Z; CLI Version: 0.32.2) while also not showing up in the Device Manager on Windows or System Information on macOS. The green LED does not light up and go away after connecting, and double pressing the reset button does not lead to the green LED lighting up and down. It is as though nothing is on on the board.

But if I connect it only to a power supply over USB-C (without data transmission), I see the green LED lighting up briefly and if I double press the reset button, the board goes into DFU mode, leading to the green LED lighting up and down.

Has anybody else had the same issue?

2

Hi @alpohree ,

Please, make sure your system is updated by:

  • Installing/Updating the latest core version of Arduino Mbed OS Portenta Boards. In Arduino IDE go to Tools > Board > Boards Manager.

  • Updating Portenta H7 bootloader: Inside the Arduino IDE select your Portenta H7 (M7 core) under Tools > Board and then go to File > Examples > STM32H747_System > STM32H747_manageBootloader. Open the Serial Monitor, select 115200 baud rate and proceed with the update following the instructions in the monitor.

Also, try to test the board with a different USB C data compatible cable and avoid using a USB hub to connect the board to the PC.

If the board will be detected by the IDE without port assignment, double-press the reset button to set the board to bootloader mode.

I hope this will be useful for you.

Best,

3

Dear @Hm_pro,

Thank you for the reply. I think the USB transceiver is fried, since the LED does not light up anymore if I connect it to a power supply without data. I had soldered pins onto my Portenta H7 Lite, I maybe shorted out something without knowing or the soldering temperature was too high and the traces were damaged somehow. I just tried out with another board (Portenta H7 non-lite version) and it is being recognized by my PC with the same cable...

Kind regards

4

Dear @alpohree ,

Sorry for the inconvenience you had with your Portenta H7 lite board.

I wanted to mention that the possibility of low power provided by the USB port of your PC is to be taken into consideration.

However, according to your description maybe the board was affected after the soldering process.

Please do not hesitate to contact us if you have any further questions or queries.

Wishing you success with the Portenta H7.

Best regards,