I’m trying to connect my new SODAQ Sara N211 to my win10 notebook, however I always get unknown USB device. Device Manager says: Unknown USB device (device descriptor request failed).
How to solve this? I’m on a vanilla (fresh installed) win10 machine.
Or is my board broken (I ordered it May 2018!)
Yes I installed the board files. Added the respective boards to the IDE.
Can you double press the reset button while the usb is connected?
Does this give you a new COM port?
Now the board is working again. What can be the reason why suddenly the serial port isn’t available anymore?
Can be some faulty code uploaded to the board.
Or when a sketch immidiatly goes into sleep/usb detach.
The double press feature puts the SAMD21 into bootloader mode to make sure you can upload new code.