What is USB MSD-CDC and USB-HID in USB Framework??

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Few months back i started using Microchip Application Framework for Experimenting with USB, and i had used HID and CDC Class of the USB Framework with PIC18F4550 Micro-Controller.

I am using this Microchip Solutions v2011-12-05 USB Framework.

PIC18F4550 Doesn't support MDD Framework but it supports mass storage or not ??

I found example in USB Folder which is as follow:-

Device - Composite - HID + MSD

Device - Composite - CDC + MSD

What is this, i am not getting exactly what is this.

When i tried to simulate it (the CDC+MSD) one i am getting a mass storage device but not any cdc device, can any one explain me what is this.
 

CDC means Communication Device Class and MSD means Mass Storage Device like Pen Drives. An example is if you have a dongle which also has MSD then dongle is the CDC and MSD is the MSD.

Dongle can also be USB HID device. Another example of CDC is if you have a USB bluetooth device then it is CDC.


Edit: I might be wrong with the dongle example.
 
Last edited:
Thanks for your reply sir.
But i want to know when i run the code in proteus only mass syorage device is present.
No cdc this is what i am asking.
Actually i need a device which must have cdc as well as mass storage device.

- - - Updated - - -

Thanks for your reply sir.
But i want to know when i run the code in proteus only mass syorage device is present.
No cdc this is what i am asking.
Actually i need a device which must have cdc as well as mass storage device.
 

Last edited:
Hello sir
msd cdc and hid are present in previous version of proteus i.e in version 7

And yes i had installed cdc driver for my os bit no cdc device has been detected by my os.
Only msd device is detected.

When i just simulate cdc example it works for me.
 

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