INTERFACING PENDRIVE TO MICROCONTROLLER

[PICUSB]

HELLO ALL,
i am doing a project to transfer data from one pendrive to other without pc. i am using pic18f4550.it has on chip and off chip transciever. can i connect 2 pendrives to it and transfer data or i need host controller like vinculum to do this.Can this pic micro act as host?

 

[kender]

Can this pic micro [pic18f4550] act as host?

No, it can not.

[do] i need host controller like vinculum to do this?

You need something that will act as a host controller. Vinculum, is probably the shortest path to success. Alternatively, you can find a more sophisticated microcontroller which can act as a host, but that's probably a much longer path.

 

[PICUSB]

why do we need a host controller???????SIE performs almost all functions of host.is it only for initiating communication on bus?can anyone tell me about handshaking signals betwwen host controller and PIC18F4550?

 

[FvM]

As a general remark. I wonder why questions, that have been asked and answered at edaboard a dozen times, are asked a new instead of reviewing the existing discussion and adding new questions, if necessary at all?

why do we need a host controller???????SIE performs almost all functions of host.

Without disccusing in detail what's the difference between almost and all, it simply doesn't work. Microchip has e.g. a PIC24FJxxxGBxxx family, that provides true host capability. To understand, what's exactly missing with a device controller as PIC18F4550, you may want to consult the USB specification, see www.usb.org/developers.

Athough I agree with Kender, that uP host firmware is a complex thing, Microchip's ready-to-use USB host examples for PIC24 can help you a lot.

 

[elrayes]

I think PIC18F4550 can act as a host, also can act OTG, get "Microchip USB framework" from Microchip website, it is free ready made firmwares for USB supported by some types of PIC microcontrollers.

 

[blueroomelectronics]

I think PIC18F4550 can act as a host, also can act OTG, get "Microchip USB framework" from Microchip website, it is free ready made firmwares for USB supported by some types of PIC microcontrollers.

No the 4550 is a slave only device, no host mode.

 

[rajkumarsmail]

hey i am also doing the same project,please help me how to read data from pendrive and how to write it into another?

Added after 1 minutes:

is that possible to do it by using 8051?