Added Boot Keyboard support

If enabled the keyboard will not work in the OS again. This still needs to be fixed.
Experimental!

src/HID-Project.h

@@ -34,6 +34,7 @@ THE SOFTWARE.
 #endif
 
 #define HID_KEYBOARD_LEDS_ENABLED
+//#define USE_BOOT_KEYBOARD_PROTOCOL
 
 //#define LAYOUT_US_ENGLISH
 //#define LAYOUT_CANADIAN_FRENCH
@@ -72,6 +73,8 @@ THE SOFTWARE.
 #define LAYOUT_US_ENGLISH
 #endif
 
+#define HID_REPORTID_NONE 0
+
 #ifndef HID_REPORTID_MOUSE
 #define HID_REPORTID_MOUSE 1
 #endif

src/ImprovedKeyboard.cpp

@@ -101,7 +101,11 @@ void Keyboard_::sendReport(HID_KeyboardReport_Data_t* keys)
 {
 	// Call the inherited function.
 	// This wrapper still saves us some bytes
+#if defined(USE_BOOT_KEYBOARD_PROTOCOL)
+	HID.SendReport(HID_REPORTID_NONE, keys,sizeof(HID_KeyboardReport_Data_t));
+#else
 	SendReport(keys,sizeof(HID_KeyboardReport_Data_t));
+#endif
 }
 
 #if defined(HID_KEYBOARD_LEDS_ENABLED)

src/PluggableHID/HID.cpp

@@ -19,6 +19,7 @@
 #include "PluggableUSB.h"
 #include "HID.h"
 #include "HIDDevice.h"
+#include "HID-Project.h" // Only used for the BootKeyboard setting
 
 #if defined(USBCON)
 
@@ -58,7 +59,11 @@ int HID_GetInterface(u8* interfaceNum)
 	interfaceNum[0] += 1;	// uses 1
 	_hidInterface =
 	{
+#if defined(USE_BOOT_KEYBOARD_PROTOCOL)
+		D_INTERFACE(HID_INTERFACE,1,3,1,1),
+#else
 		D_INTERFACE(HID_INTERFACE,1,3,0,0),
+#endif
 		D_HIDREPORT(sizeof_hidReportDescriptor),
 		D_ENDPOINT(USB_ENDPOINT_IN (HID_ENDPOINT_INT),USB_ENDPOINT_TYPE_INTERRUPT,USB_EP_SIZE,0x01)
 	};
@@ -97,7 +102,10 @@ void HID_::AppendDescriptor(HIDDevice *device)
 
 void HID_::SendReport(u8 id, const void* data, int len)
 {
-	USB_Send(HID_TX, &id, 1);
+	// Only send report ID if it exists
+	if(id){
+		USB_Send(HID_TX, &id, 1);
+	}
 	USB_Send(HID_TX | TRANSFER_RELEASE,data,len);
 }
 
@@ -143,17 +151,22 @@ bool HID_::HID_Setup(USBSetup& setup, u8 i)
 				HIDDevice *current = rootDevice;
 				while(current != NULL) 
 				{
-					// TODO implementation for non reportID HID devices
-					// This would could make rawHID work. reportID 0 could be used as indicator
+					// Search HIDDevice for report ID
 					if(current->reportID == ID)
 					{
 						// Get the data length information and the corresponding bytes
 						uint8_t length = setup.wLength;
 						uint8_t data[length];
 						USB_RecvControl(data, length);
 
-						// Skip report ID data
-						current->setReportData(data+1, length-1);
+						// Skip report ID data, if any
+						if(ID){
+							current->setReportData(data+1, length-1);
+						}
+						// TODO test this case
+						else{
+							current->setReportData(data, length);
+						}
 
 						// Dont search any further
 						break;

src/TeensyKeyboard.cpp

@@ -253,7 +253,11 @@ void usb_keyboard_class::set_media(uint8_t c)
 
 void usb_keyboard_class::send_now(void)
 {
+#if defined(USE_BOOT_KEYBOARD_PROTOCOL)
+	HID.SendReport(HID_REPORTID_NONE, keyboard_report_data,sizeof(keyboard_report_data));
+#else
 	SendReport(keyboard_report_data,sizeof(keyboard_report_data));
+#endif
 }