remove setupUSB weak hook and replace with global constructors

thanks @matthijskooijman

Author: Martino Facchin

Diff for: hardware/arduino/avr/cores/arduino/main.cpp

@@ -37,7 +37,6 @@ int main(void)
 	initVariant();
 
 #if defined(USBCON)
-	setupUSB();
 	USBDevice.attach();
 #endif
 

Diff for: libraries/HID/HID.cpp

@@ -111,8 +111,7 @@ bool WEAK HID_Setup(Setup& setup, u8 i)
 	}
 }
 
-// to be called by begin(), will trigger USB disconnection and reconnection
-int8_t HID_Plug(void)
+HID_::HID_(void)
 {
 	static uint8_t endpointType[1];
 
@@ -137,17 +136,10 @@ int8_t HID_Plug(void)
 		D_HIDREPORT(getsizeof_hidReportDescriptor()),
 		D_ENDPOINT(USB_ENDPOINT_IN (HID_ENDPOINT_INT),USB_ENDPOINT_TYPE_INTERRUPT,0x40,0x01)
 	};
-
-	return HID_ENDPOINT_INT;
-}
-
-HID_::HID_(void)
-{
 }
 
 int HID_::begin(void)
 {
-	return HID_Plug();
 }
 
 #endif /* if defined(USBCON) */

Diff for: libraries/Keyboard/Keyboard.cpp

@@ -200,10 +200,6 @@ size_t getsizeof_hidReportDescriptor() {
 	return sizeof(_hidReportDescriptor);
 }
 
-void WEAK setupUSB() {
-	HID.begin();
-}
-
 uint8_t USBPutChar(uint8_t c);
 
 // press() adds the specified key (printing, non-printing, or modifier)

Diff for: libraries/MIDIUSB/MIDIUSB.cpp

@@ -39,10 +39,6 @@ ring_bufferMIDI midi_rx_buffer = {{0,0,0,0 }, 0, 0};
 
 static MIDIDescriptor _midiInterface;
 
-void WEAK setupUSB() {
-	MidiUSB.begin();
-}
-
 int8_t WEAK MIDI_GetInterface(uint8_t* interfaceNum)
 {
 	interfaceNum[0] += 2;	// uses 2
@@ -171,9 +167,8 @@ void MIDI_::sendMIDI(midiEventPacket_t event)
 	write(data, 4);
 }
 
-int8_t MIDI_plug(void)
+MIDI_::MIDI_(void)
 {
-
 	static uint8_t endpointType[2];
 
 	endpointType[0] = EP_TYPE_BULK_OUT_MIDI;	// MIDI_ENDPOINT_OUT
@@ -210,13 +205,10 @@ int8_t MIDI_plug(void)
 		D_MIDI_JACK_EP(USB_ENDPOINT_IN(MIDI_ENDPOINT_IN),USB_ENDPOINT_TYPE_BULK,512),
 		D_MIDI_AC_JACK_EP (1, 3)
 	};
-
-	return MIDI_ENDPOINT_IN;
 }
 
 int8_t MIDI_::begin()
 {
-	return MIDI_plug();
 }
 
 

Diff for: libraries/MIDIUSB/MIDIUSB.h

@@ -26,6 +26,8 @@ class MIDI_
 // private:
 // 	RingBuffer *_midi_rx_buffer;
 public:
+	MIDI_(void);
+
 	int8_t begin();
 
 	virtual uint32_t available(void);

Diff for: libraries/Mouse/Mouse.cpp

@@ -45,10 +45,6 @@ Mouse_ Mouse;
 //================================================================================
 //	Mouse
 
-void WEAK setupUSB() {
-  HID.begin();
-}
-
 Mouse_::Mouse_(void) : _buttons(0)
 {
 }

Diff for: libraries/MouseAndKeyboard/MouseAndKeyboard.cpp

@@ -91,10 +91,6 @@ size_t getsizeof_hidReportDescriptor() {
     return sizeof(_hidReportDescriptor);
 }
 
-void WEAK setupUSB() {
-    HID.begin();
-}
-
 Mouse_ Mouse;
 
 //================================================================================