MQX Software SolutionsのトピックUsing multiple virtual com ports over single USB connection ?

Using multiple virtual com ports over single USB connection ?

nitinharish — Mon, 30 Mar 2015 21:16:33 GMT

Folks

Is it possible to have multiple virtual COM ports using a single USB connection from Kinetis to host windows PC ?

I am using k64 with MQX 4.1.1, I can run virtual COM port Freescale USB CDC example, but what I want is to have 2 virtual COM ports identified in Windows for my Kinetis's USB connection, so that from Kinetis side of things I can send data to virtual COM port 1 or 2 or to both.

Let me know. Any thoughts mjbcswitzerland

Re: Using multiple virtual com ports over single USB connection ?

mjbcswitzerland — Tue, 31 Mar 2015 01:01:06 GMT

Hi Nitin

See http://www.utasker.com/kinetis/FRDM-K64F.html#CDC5

This will allow 5 virtual COM ports to UART bridges with the FRDM-K64F or

µTasker Kinetis TWR-K64F120M support allows 6 virtual COM port to UART bridges (the K64 on the TWR has 6 UARTs while the one on the FRDM board - with less pins - has 5).

This means that it is possible but I don't know whether the framework that you use can do it without developing the support needed.

Composite devices are discussed here in more detail: http://www.utasker.com/kinetis/USB_Device.html

Regards

Mark

Kinetis: µTasker Kinetis support

K64: µTasker Kinetis FRDM-K64F support / µTasker Kinetis TWR-K64F120M support

Composite USB: µTasker USB Device Configuration

USB User's Guide: http://www.utasker.com/docs/uTasker/USB_User_Guide.PDF

For the complete "out-of-the-box" Kinetis experience and faster time to market

Re: Using multiple virtual com ports over single USB connection ?

soledad — Tue, 07 Apr 2015 20:49:40 GMT

Hello,

Please check the below thread and let me know if this helps!

Dual CDC virtual com device

Questions about "virtual_com" USB CDC driver in MQX 3.6 & under CW10

Have a great day,
Sol

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