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Sending data to thumb drive

 
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Sending data to thumb drive
PostPosted: Mon Jun 19, 2006 10:47 am     Reply with quote

I need to send data from my PIC to a storage device. I would like that device to be a USB thumb drive. Since both the PIC and the USB are "slave" devices, is it possible to do this and what would be involved?

Thanks,
iso9001



Joined: 02 Dec 2003
Posts: 262

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PostPosted: Mon Jun 19, 2006 10:55 am     Reply with quote

Run.... Run away quickly! There is a lot more work to this then you think. Also, combining slave devices isn't going to work. You need 1 master to talk to any number of slaves.... Where is you master ?

Look into MMC cards instead. They are driven over SPI, and be read or written to directly by the PIC or a PC. They are CHEAP. Large capacity. You don't even 'need' to implement a complicated file system for them. Etc Etc Etc.

Also, if you want anyone to take you seriously, register here.
rwyoung



Joined: 12 Nov 2003
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PostPosted: Mon Jun 19, 2006 12:23 pm     Reply with quote

http://www.ghielectronics.com/USBwiz.htm
Or just buy your own ARM7 and do it all for yourself.
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Rob Young
The Screw-Up Fairy may just visit you but he has crashed on my couch for the last month!
iso9001



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PostPosted: Mon Jun 19, 2006 2:24 pm     Reply with quote

Thats pretty cool!

Expensive, but I could see a use if you needed SMS or FAT in a hurry.
Eugeneo



Joined: 30 Aug 2005
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PostPosted: Mon Jun 19, 2006 5:58 pm     Reply with quote

I could see were this would be useful. Has anybody actually used this.
asmallri



Joined: 12 Aug 2004
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Re: Sending data to thumb drive
PostPosted: Mon Jun 19, 2006 6:39 pm     Reply with quote

Guest wrote:
I need to send data from my PIC to a storage device. I would like that device to be a USB thumb drive. Since both the PIC and the USB are "slave" devices, is it possible to do this and what would be involved?

Thanks,


MAXIM have a new USB host controller that you can integrate to the PIC via the SPI bus.

I use SD cards for this type of function but if you plan to make a product with SD or MMC cards then your customers will require some form of reader - usually a cheap SD/MMC to USB adapter. If you take the USB approach then no reader is need for current generation systems.
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