Method receive

src/XInput.cpp:453–487

}

int XInputController::receive() {
#ifdef USB_XINPUT
	if (XInputUSB::available() == 0) {
		return 0;  // No packet available
	}

	// Grab packet and store it in rx array
	uint8_t rx[8];
	const int bytesRecv = XInputUSB::recv(rx, sizeof(rx));

	// Only process if received 3 or more bytes (min valid packet size)
	if (bytesRecv >= 3) {
		const uint8_t PacketType = rx[0];

		// Rumble Packet
		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 (PacketType == (uint8_t)XInputReceiveType::LEDs) {
			parseLED(rx[2]);
		}

		// User-defined receive callback
		if (recvCallback != nullptr) {
			recvCallback(PacketType);
		}
	}

	return bytesRecv;
#else
	return 0;
#endif
}

void XInputController::parseLED(uint8_t leds) {
	if (leds > 0x0D) return;  // Not a known pattern