I'm trying to implement a dedicated multimedia controller (Play/Pause, Vol +/- Next/previous track) on Windows7 with little success.
I started with the Arduino Keyboard sketch (http://blog.petrockblock.com/2012/05/19/usb-keyboard-with-arduino-and-v-usb-library-an-example/ with vusb-for-arduino-005.zip. Got that to work (1/2W Zener Diodes NOT 1W, libusb).
Then changed the report descriptor to a consumer device.
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PROGMEM char usbHidReportDescriptor[31] = { // USB report descriptor
0×05, 0×0c, // USAGE_PAGE (Consumer Devices)
0×09, 0×06, // USAGE (Keyboard)
0xa1, 0×01, // COLLECTION (Application)
0×05, 0x0c, // USAGE_PAGE (Consumer Devices)
0×09, 0xcd, // play/pause
0×09, 0xe9, // volume up
0×09, 0xea, // volume down
0×09, 0xb5, // next track
0×09, 0xb6, // previous track
0×09, 0xec, // mute
0×15, 0×00, // LOGICAL_MINIMUM (0)
0×25, 0×01, // LOGICAL_MAXIMUM (1)
0×95, 0×06, // REPORT_COUNT (6)
0×75, 0×01, // REPORT_SIZE (1)
0×81, 0×02, // INPUT (Data,Var,Abs)
0xc0
};
Changed the VID/PID, reset libusb...
Changed code in USBKeyboard.h
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void sendKeyStroke(byte keyStroke, byte modifiers) {
while (!usbInterruptIsReady()) {
// Note: We wait until we can send keystroke
// so we know the previous keystroke was
// sent.
}
memset(reportBuffer, 0, sizeof(reportBuffer));
reportBuffer[0] = keyStroke;Windows reports a USB Inout Device (with proper VID/PID). Sending 1 or 2 as a keystroke should Play/Pause and Vol. +.
Nothing happens.
Any assistance Sensi's.
I am but a grasshopper.
Mike G.