Use enum for USB receive packet types

I've seen 0x02 before as well although I don't know what it's used for. Byte 0 is the message type and byte 1 is the length

Author: dmadison

keywords.txt

@@ -14,6 +14,7 @@ XInputGamepad	KEYWORD1
 
 # Enums
 XInputControl	KEYWORD1
+XInputReceiveType	KEYWORD1
 XInputLEDPattern	KEYWORD1
 
 #######################################
@@ -89,6 +90,10 @@ TRIGGER_RIGHT	LITERAL1
 JOY_LEFT	LITERAL1
 JOY_RIGHT	LITERAL1
 
+# USB Receive Packet Types
+Rumble	LITERAL1
+LEDs	LITERAL1
+
 # LED Patterns
 Off	LITERAL1
 Blinking	LITERAL1

src/XInput.cpp

@@ -347,14 +347,16 @@ size_t XInputGamepad::receive() {
 	// Grab packet and store it in rx array
 	uint8_t rx[8];
 	size_t bytesRecv = XInputUSB::recv(rx, USB_Timeout);
+
+	const uint8_t PacketType = rx[0];
 
 	// Rumble Packet
-	if ((rx[0] == 0x00) & (rx[1] == 0x08)) {
+	if(PacketType == (uint8_t) XInputReceiveType::Rumble) {
 		rumble[RumbleLeft.bufferIndex]  = rx[RumbleLeft.rxIndex];   // Big weight (Left grip)
 		rumble[RumbleRight.bufferIndex] = rx[RumbleRight.rxIndex];  // Small weight (Right grip)
 	}
 	// LED Packet
-	else if (rx[0] == 0x01) {
+	else if (PacketType == (uint8_t) XInputReceiveType::LEDs) {
 		parseLED(rx[2]);
 	}
 	return bytesRecv;

src/XInput.h

@@ -51,6 +51,11 @@ enum XInputControl {
 	JOY_RIGHT,
 };
 
+enum class XInputReceiveType {
+	Rumble = 0x00,
+	LEDs = 0x01,
+};
+
 enum class XInputLEDPattern {
 	Off = 0x00,
 	Blinking = 0x01,