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write to usb memory device

 
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delene



Joined: 13 Oct 2003
Posts: 32

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write to usb memory device
PostPosted: Mon Aug 20, 2007 9:07 am     Reply with quote
Please can someone give an example on how to write data to a usb memory stick - flash drive.

Would really appreciate it if code could be posted

Many thanks
Delene
franck
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PostPosted: Mon Aug 20, 2007 9:19 am     Reply with quote
You need an usb host device to write something in a memory stick. Pic are only usb devices...
Douglas Kennedy



Joined: 07 Sep 2003
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PostPosted: Mon Aug 20, 2007 10:01 am     Reply with quote
Remember USB is the horse that when designed by a committee becomes a camel. It might be said if RS232 (USB serial forerunner) is a flea then USB is the camel.Most often the PC is the host and USB devices are slaves. To have a PIC become the host is possible but it would need to be specifically written to support a specific USB device. Code to support all devices requires a bloated OS like windows with googles of space for driver after driver. Alternatives are MMC/SD cards since they have a PIC compatible SPI interface or there are specific chips that can interface with USB as a host and pass through data to a PIC. Search this forum I think FTDI has a usb host chip.
kender



Joined: 09 Aug 2004
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PostPosted: Wed Aug 22, 2007 10:23 am     Reply with quote
Douglas Kennedy wrote:
Search this forum I think FTDI has a usb host chip.

Yes. It's called Vinculum http://www.vinculum.com
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