USB Interfaces

The following USB Interfaces are exposed to the Host, broadly based on the hardware modules provided by the PIC32MM0256GPM028.

ID	Name	Description
0	Core	Device-, pin- and configuration-related functions, such as GPIO, interrupt-on-change, etc.
3	USB	USB (Universal Serial Bus) information, such as Debug Accessory Mode detection and general status.
4	I2C	I2C (Inter-Integrated Circuit) bus functions.

Reports

Each HID interface has its own set of IN and OUT Reports and the IDs can overlap. However, there are some generic reports that are consistent across all interfaces:

Report ID	Direction	Description
0x01	IN	Command Acknowledgement

Reports are categorised as IN, Interrupt IN and OUT:

Direction	Description
IN	The Host can request the report via a standard USB Get_Report transaction.
Interrupt IN	The device sends the report to the Host, possibly in response to a previous command or as a notification of an external or periodic event.
OUT	The Host sends the report to the device.