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USB Host facility : Electronic Development Assistance
We wish to add a basic USB HOST capability to one of our products so that a USB Thumb Drive can be connected to it.
Our product needs to access files on the USB Thumb Drive and transfer these files to on board flash memory.
What we require is a fully working USB HOST program which we can load into a microprocessor, preferably a Microchip PIC series chip, which we will add to our circuit.
The USB HOST program (lets call it the USB interface) need only meet USB1 standard, as transfer speed is not important. USB2 support is advantageous, but not essential.
We feel the best solution is to incorporate a dedicated micro with custom firmware which will operate as a host for the USB thumb drive and to provide an SPI Input/Output interface which our device can interface to.
The Interface to consist of
• Chip select input
• Thumb Drive In/Out status
• SPI (Data In/Data Out/Clock at min 4Mhz)
The micro should run between 3V and 5V...
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