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EZ Loader custom USB firmware loader driver

Posted: 08 Jun 2010     Print Version  Bookmark and Share

Keywords:firmware loader driver  custom USB firmware  device driver 

A unique feature of the Cypress EZ-USB, EZ-USB FX and EZ-USB FX2 family of microcontrollers is the ability to change device personality through firmware download and ReNumeration. An EZ-USB-based device may have only enough non-volatile storage in an EEPROM to store a unique Vendor ID (VID) and Product ID (PID). This VID/PID combination can be bound to a specific device driver on the host system. This VID/PID combination can also be bound to a driver whose only function is to download firmware to the device. This application note describes such a driver. The EZ Loader Driver discussed in this application note is a template that peripheral designers can use to create a custom driver that knows how to download their firmware to their specific device.

View the PDF document for more information.

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