USBDevice: fixed some minor warnings

Author: cmaglie

cores/arduino/USB/CDC.cpp

@@ -58,11 +58,11 @@ static volatile int32_t breakValue = -1;
 _Pragma("pack()")
 
 // CDC
-#define CDC_ACM_INTERFACE	pluggedInterface	// CDC ACM
-#define CDC_DATA_INTERFACE	pluggedInterface+1	// CDC Data
-#define CDC_ENDPOINT_ACM	pluggedEndpoint
-#define CDC_ENDPOINT_OUT	pluggedEndpoint+1
-#define CDC_ENDPOINT_IN		pluggedEndpoint+2
+#define CDC_ACM_INTERFACE  pluggedInterface              // CDC ACM
+#define CDC_DATA_INTERFACE uint8_t(pluggedInterface + 1) // CDC Data
+#define CDC_ENDPOINT_ACM   pluggedEndpoint
+#define CDC_ENDPOINT_OUT   pluggedEndpoint + 1
+#define CDC_ENDPOINT_IN    pluggedEndpoint + 2
 
 #define CDC_RX CDC_ENDPOINT_OUT
 #define CDC_TX CDC_ENDPOINT_IN
@@ -91,7 +91,7 @@ int Serial_::getInterface(uint8_t* interfaceNum)
 	return USBDevice.sendControl(&_cdcInterface, sizeof(_cdcInterface));
 }
 
-int Serial_::getDescriptor(USBSetup& setup)
+int Serial_::getDescriptor(USBSetup& /* setup */)
 {
 	return 0;
 }

cores/arduino/USB/PluggableUSB.h

@@ -35,7 +35,7 @@ class PluggableUSBModule {
   virtual bool setup(USBSetup& setup) = 0;
   virtual int getInterface(uint8_t* interfaceCount) = 0;
   virtual int getDescriptor(USBSetup& setup) = 0;
-  virtual void handleEndpoint(int ep) {/* Do nothing */}
+  virtual void handleEndpoint(int /* ep */) { /* Do nothing */ }
   virtual uint8_t getShortName(char *name) { name[0] = 'A'+pluggedInterface; return 1; }
 
   uint8_t pluggedInterface;

cores/arduino/USB/USBCore.h

@@ -33,8 +33,8 @@
 
 // bEndpointAddress in Endpoint Descriptor
 #define USB_ENDPOINT_DIRECTION_MASK            0x80
-#define USB_ENDPOINT_OUT(addr)                 ((addr) | 0x00)
-#define USB_ENDPOINT_IN(addr)                  ((addr) | 0x80)
+#define USB_ENDPOINT_OUT(addr)                 uint8_t((addr) | 0x00)
+#define USB_ENDPOINT_IN(addr)                  uint8_t((addr) | 0x80)
 
 #define USB_ENDPOINTS                          7