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.

 

[jayanth.devarayanadurga]

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.

 

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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.

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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.

 

[jayanth.devarayanadurga]

What do you mean by MSD present in Proteus. There is no MSD in Proteus. If you simulate MSD in Proteus it will hang or crash.

Edit: You are right. Labcenter has added USB MSD Simulation to Proteus. You can simulate MSD, CDC, and HID with Proteus 8.

Did you see this. https://www.limpkin.fr/index.php?po...SB-CDC/MSD-FAT32-with-AT91LIB-Chan-s-fat-code

Have you installed CDC Drivers for your OS?

 

[xpress_embedo]

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.

 

[jayanth.devarayanadurga]

If Possible post your code and Proteus file.