rn-42

back :)

a quick update on the subjetc: I just finished writing a USB HID GamePad module ( yaaaaaayyyyy! ^^ ), and I'll digg that RN42 thing as soon as can do.

this being said, I now better grasp some stuff from the data provided:

using the RN42 HID firmware & sending a 'raw' hid report is done as ( p7 of their manual at https://cdn.sparkfun.com/datasheets/Wireless/Bluetooth/RN-HID-User-Guide-v1.0r.pdf):

// Serial points to either an RN42 or a flashed HC-05 with HID support
//E.sendUSBHID([
Serial.write(
    0xFD,                // indicates raw hid report
    0x06,                 // bLength
    0x01,                 // bDescriptorType - constant ( String assigned by USB )
    x1,                     // Byte0
    y1,                     // Byte1
    x2,                    // Byte2
    y2                      // Byte3
    btnState & 0xFF,             // Byte4
    (btnState>>8) & 0xFF, // Byte5
);
//]);

to the contrary, USB HID ( & maybe Espruino's bluetooth HID )

E.sendUSBHID([
    // 0xFD,                // indicates raw hid report
    //0x06,                 // bLength
    //0x01,                 // bDescriptorType - constant ( String assigned by USB )
    btnState & 0xFF,      // Byte0
    (btnState>>8) & 0xFF, // Byte1
    x1,                   // Byte2
    y1,                   // Byte3
    x2,                   // Byte4
    y2                   // Byte5
]);

One good thing to do 'd be summarizing the REALLY interesting parts from their doc to gain a huge amount of scroll time & cie .. ;)