topic Re: CDC and MSD on the same device in MQX Software Solutions

CDC and MSD on the same device

mircopizzichini — Wed, 03 Sep 2014 15:10:38 GMT

Hi all

I want to add USB device functionalities to my K10 based device: connecting it to a PC via USB, it should emulate a virtual com, and at the same time I should be able to access to the SD card file system.

Is it possible to use simultaneously both CDC and MSD profiles provided in USB stack examples?

I've just implemented CDC, and before adapting MSD example to my project, I would like to know if it's possibile having both profiles.

Thank you very much,

Mirco

Re: CDC and MSD on the same device

RadekS — Wed, 03 Sep 2014 15:36:46 GMT

Unfortunately this isn’t possible with current USB stack (part of MQX 4.1.1).

Current USB stack don’t support composite device.

This will be possible in new USB stack which will be prepared for next MQX release (probably MQX4.2 in 1Q of 2015)

CDC+MSC will be one of example applications.

Have a great day,
RadekS

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Re: CDC and MSD on the same device

mircopizzichini — Wed, 03 Sep 2014 15:45:49 GMT

Thank you Radek, so now I implement only MSC.

I'll wait the next MQX release for both

Mirco

Re: CDC and MSD on the same device

matthewkendall — Sun, 28 Sep 2014 00:09:12 GMT

I hope the new capabilities will include having multiple instances of the same class, e.g. a composite device consisting of two CDC.

Re: CDC and MSD on the same device

RadekS — Tue, 30 Sep 2014 08:26:28 GMT

Yes, the new USB stack will support the multiple instances of the same class in MQX4.2. There will be also document to guide user how to build a multiple instances...