Update HID API

libraries/HID/HID.cpp

@@ -84,12 +84,12 @@ void HID_::AppendDescriptor(HIDSubDescriptor *node)
 	descriptorSize += node->length;
 }
 
-void HID_::SendReport(uint8_t id, const void* data, int len)
+int HID_::SendReport(uint8_t id, const void* data, int len)
 {
 	uint8_t p[64];
 	p[0] = id;
 	memcpy(&p[1], data, len);
-	USBDevice.send(pluggedEndpoint, p, len+1);
+	return USBDevice.send(pluggedEndpoint, p, len+1);
 }
 
 bool HID_::setup(USBSetup& setup)

libraries/HID/HID.h

@@ -88,7 +88,7 @@ class HID_ : public PluggableUSBModule
 public:
   HID_(void);
   int begin(void);
-  void SendReport(uint8_t id, const void* data, int len);
+  int SendReport(uint8_t id, const void* data, int len);
   void AppendDescriptor(HIDSubDescriptor* node);
 
 protected: