I have reviewed the USB.org "Universal Serial Bus Class Definitions for Communications Devices", Revision 1.2 which covers the CDC as well as the USB 2.0 specification and the class definition in virtual_com.c seems to be correct. My understanding is that a device that is set up as with the CDC interface provides this capability - but in the "virtual_com" folder, there is the "inf" folder which contains "fsl_ucwxp.inf" which must be installed on a Windows/XP machine for this to work - when I try it on a Windows 7 PC, I get "Unknown Device" in device manager and Windows 7 will not allow loading "fsl_ucwxp.inf". Windows PCs (various flavours XP, Vista 32 & 64 bit and Windows 7 32 & 64 bit) The product that this is being designed for will interface to: The goal for this product's USB interface is for the host app to be a single common Java program which runs on the different PCs listed below, opens and tests the different serial interfaces to find the product and start communicating with it. I am not able to get a connection on a Windows 7 PC. I am running virtual_com successfully on the M52223EVB and I am communicating with a Windows/XP PC using Tera Term. I am using the "virtual_com" example app that comes with MQX 3.6. I want to use the MQX USB driver configured as a CDC device.
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