No COM detected after connecting to PC
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Hi everybody,
when I connect my M5Core2 to a computer - nothing happens. No COM port is added and no unknown hardware is detected.
I've tried multiple computers with Windows 11 and macOS 15.3 Sequoia, and also multiple USB cables.
The latest drivers for both cp210x and ch340 are installed on all computers.My other M5 core grey (BALA2) is connecting without any problems.
Any ideas?
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@Juraj Is the core2 charged?
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@Juraj I can share my issue and solution using an M5Core3SE and a Win11 computer.
When I connected the M5 to the USB-A port on the PC using a USB-A to USB-C cable, I got power, but no COM ports.
When I connected the M5 to the USB-C port on the PC (using a USB-C to USB-C cable), BOOM: COM port.
I haven't dug into it to see particularly why (best guess right now is the M5 connection uses both the legacy USB 2.0 connection as well as the SuperSpeed connection: one for the terminal and one for the M5 program data stream?)
Hope this helps.
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@JourneymanWizard said in No COM detected after connecting to PC:
@Juraj I can share my issue and solution using an M5Core3SE and a Win11 computer.
When I connected the M5 to the USB-A port on the PC using a USB-A to USB-C cable, I got power, but no COM ports.
When I connected the M5 to the USB-C port on the PC (using a USB-C to USB-C cable), BOOM: COM port.
I haven't dug into it to see particularly why (best guess right now is the M5 connection uses both the legacy USB 2.0 connection as well as the SuperSpeed connection: one for the terminal and one for the M5 program data stream?)
Hope this helps.
so you are using 2 different cables and its ok on just one...no issue with pc, no issue with M5..check with dofferent A to C USB
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@JourneymanWizard The USB A cable is power only not a data cable.
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@robski I tried multiple cables. Every USB-A to USB-C cable failed, some of which I had used in the past for data transfer. I am only using 1 cable: USB-C to USB-C
@ajb2k3 To clarify: are you saying that somewhere in the Core3SE documentation it says that USB-A is power only? Could you link that or point me to it? I clearly need to dig into the hardware a bit more :)
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@JourneymanWizard No, I'm saying that not all cables are power+data. some cables are data only.
Also for some reason I have noticed that cables of late have a high failure rate (conductors breaking.
You are a core3, Have you pressed the boot button?
Another thing I have also noticed that I have to use a USB hub between the device and the computer for some reason.
