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Original question:

TM4C1294NCPDT: USB CDC does not work

TM4C1294NCPDT: USB Port Crashed

Madhavi Gupta
Prodigy 95 points
Part Number: TM4C1294NCPDT

Hello,

I am working on USB in TM4C1294NCPDT...once I had loaded the usb_host_msc program from examples just to see what happens. At the time the USB was recognized by the laptop but it couldn't connect to it. So, I tried some commands in the terminal. 

Now the situation is that the laptop is showing the device has malfunctioned last time so cannot connect.

Kindly suggest some solution (s) which can fix this and make my device recognizable and I can exchange the data.

Thanks in advance!

  • 0
    TI__Guru**** 191486 points
    Hi,
    What Windows version do you have? is it Windows 10? Have you tried the project Ralph attached in the thread you referenced. He wrote in that thread "If you are using Windows 10, the cserial example has issues with enumeration. I am attaching a CDC device version which should enumerate fine. Please try and that and also compare the initialization code from my example to yours." He attached a modified project in that thread.

    What if you try the the usb_host_msc example on an Windows 7 machine? Do you see any difference?

    You might also want to try restart your Windows machine or unplug and plug the USB to the machine too.