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TM4C123GH6PM: multiple usb-cdc on the tiva-c

can altineller
Expert 1720 points
Part Number: TM4C123GH6PM
Other Parts Discussed in Thread: EK-TM4C1294XL

Tool/software:

Hello,

Could it be possible to have multiple virtual serial ports using usb-cdc having seperate handlers and methods to write to usb?

Best regards,

Can

  • +1
    TI__Guru**** 191296 points

    Hi Can,

      Yes, it is possible. Please take at look at this example C:\ti\TivaWare_C_Series-2.2.0.295\examples\boards\ek-tm4c1294xl\usb_dev_cserial for TM4C129. This example will create a composite device with two CDC class devices. In another word, you will see two different COM ports on Windows Device Manager after enumeration. The example is for TM4C129. You will need to port it to TM4C123.