![]() HID usages identify the intended use of HID controls and what the controls actually Protocol and meaning assigned to HID control data. IfĪ device supports more than one report of the same type, each report isĪssigned a unique report ID. Input and output reports specify control dataĪnd feature reports specify configuration data. A report descriptor defines the format of a Use only for configuration information of the device (in our example, a timerĪ HID report is used to transmit HID control data to and from a control. Source, or input control, is the thermometer. Source or data sink associated with a control descriptor. The meaning of the reports (orĪlternatively – the functionality of the control) is determined by its control Interacts directly with, and most often takes input from, humans and may deliver output to humans.Ĭlick here to learn more. The idea was to encapsulate Win32 API C methods with Perl interface. ![]() The implementation was done for Windows XP 32 bit OS, and tested with LPC2148 board. 17 Introduction Our final project in "Embedded Systems" course at Tel-Aviv University was to design, implement, and test host-side native libraries that will allow Perl programs to communicate with USB HID devices. Support Hardware Unplug/Replug detection. Preparing the environment for demonstration.
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