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USB Firmware (Assembly Version
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USB Firmware Users Guide – Assembly version
1. Introducing the USB software interface
Microchip provides a layer of software for the PIC16C745/65 that handles the lowest level interface so your application won’t have to. This provides a simple Put/Get interface for communication. Most of the USB processing takes place in the background through the Interrupt Service Routine. From the application viewpoint, the enumeration process and data communication takes place without further interaction. However substantial setup is required in the form of generating appropriate descriptors.
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