Added support for original Xbox controller

This commit is contained in:
Kristian Sloth Lauszus 2013-07-18 17:52:23 +02:00
parent c0fde76241
commit 7ff9dea66b
5 changed files with 631 additions and 0 deletions

332
XBOXUSBOLD.cpp Normal file
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/* Copyright (C) 2013 Kristian Lauszus, TKJ Electronics. All rights reserved.
This software may be distributed and modified under the terms of the GNU
General Public License version 2 (GPL2) as published by the Free Software
Foundation and appearing in the file GPL2.TXT included in the packaging of
this file. Please note that GPL2 Section 2[b] requires that all works based
on this software must also be made publicly available under the terms of
the GPL2 ("Copyleft").
Contact information
-------------------
Kristian Lauszus, TKJ Electronics
Web : http://www.tkjelectronics.com
e-mail : kristianl@tkjelectronics.com
*/
#include "XBOXUSBOLD.h"
// To enable serial debugging uncomment "#define DEBUG_USB_HOST" in message.h
//#define EXTRADEBUG // Uncomment to get even more debugging data
#define PRINTREPORT // Uncomment to print the report send by the Xbox controller
/** Buttons on the controllers */
const uint8_t XBOXOLDBUTTONS[] PROGMEM = {
0x01, // UP
0x08, // RIGHT
0x02, // DOWN
0x04, // LEFT
0x20, // BACK
0x10, // START
0x40, // L3
0x80, // R3
// A, B, X, Y, BLACK, WHITE, L1, and R1 are analog buttons
4, // BLACK
5, // WHTIE
6, // L1
7, // R1
1, // B
0, // A
2, // X
3, // Y
};
XBOXUSBOLD::XBOXUSBOLD(USB *p) :
pUsb(p), // pointer to USB class instance - mandatory
bAddress(0), // device address - mandatory
bPollEnable(false) { // don't start polling before dongle is connected
for (uint8_t i = 0; i < XBOX_MAX_ENDPOINTS; i++) {
epInfo[i].epAddr = 0;
epInfo[i].maxPktSize = (i) ? 0 : 8;
epInfo[i].epAttribs = 0;
epInfo[i].bmNakPower = (i) ? USB_NAK_NOWAIT : USB_NAK_MAX_POWER;
}
if (pUsb) // register in USB subsystem
pUsb->RegisterDeviceClass(this); //set devConfig[] entry
}
uint8_t XBOXUSBOLD::Init(uint8_t parent, uint8_t port, bool lowspeed) {
uint8_t buf[sizeof (USB_DEVICE_DESCRIPTOR)];
uint8_t rcode;
UsbDevice *p = NULL;
EpInfo *oldep_ptr = NULL;
uint16_t PID;
uint16_t VID;
// get memory address of USB device address pool
AddressPool &addrPool = pUsb->GetAddressPool();
#ifdef EXTRADEBUG
Notify(PSTR("\r\nXBOXUSB Init"), 0x80);
#endif
// check if address has already been assigned to an instance
if (bAddress) {
#ifdef DEBUG_USB_HOST
Notify(PSTR("\r\nAddress in use"), 0x80);
#endif
return USB_ERROR_CLASS_INSTANCE_ALREADY_IN_USE;
}
// Get pointer to pseudo device with address 0 assigned
p = addrPool.GetUsbDevicePtr(0);
if (!p) {
#ifdef DEBUG_USB_HOST
Notify(PSTR("\r\nAddress not found"), 0x80);
#endif
return USB_ERROR_ADDRESS_NOT_FOUND_IN_POOL;
}
if (!p->epinfo) {
#ifdef DEBUG_USB_HOST
Notify(PSTR("\r\nepinfo is null"), 0x80);
#endif
return USB_ERROR_EPINFO_IS_NULL;
}
// Save old pointer to EP_RECORD of address 0
oldep_ptr = p->epinfo;
// Temporary assign new pointer to epInfo to p->epinfo in order to avoid toggle inconsistence
p->epinfo = epInfo;
p->lowspeed = lowspeed;
// Get device descriptor
rcode = pUsb->getDevDescr(0, 0, sizeof (USB_DEVICE_DESCRIPTOR), (uint8_t*)buf); // Get device descriptor - addr, ep, nbytes, data
// Restore p->epinfo
p->epinfo = oldep_ptr;
if (rcode)
goto FailGetDevDescr;
VID = ((USB_DEVICE_DESCRIPTOR*)buf)->idVendor;
PID = ((USB_DEVICE_DESCRIPTOR*)buf)->idProduct;
if ((VID != XBOX_VID && VID != MADCATZ_VID && VID != JOYTECH_VID) || PID != XBOX_OLD_PID) // We just check if it's a xbox controller using the Vendor ID
goto FailUnknownDevice;
// Allocate new address according to device class
bAddress = addrPool.AllocAddress(parent, false, port);
if (!bAddress)
return USB_ERROR_OUT_OF_ADDRESS_SPACE_IN_POOL;
// Extract Max Packet Size from device descriptor
epInfo[0].maxPktSize = (uint8_t)((USB_DEVICE_DESCRIPTOR*)buf)->bMaxPacketSize0;
// Assign new address to the device
rcode = pUsb->setAddr(0, 0, bAddress);
if (rcode) {
p->lowspeed = false;
addrPool.FreeAddress(bAddress);
bAddress = 0;
#ifdef DEBUG_USB_HOST
Notify(PSTR("\r\nsetAddr: "), 0x80);
#endif
D_PrintHex<uint8_t > (rcode, 0x80);
return rcode;
}
#ifdef EXTRADEBUG
Notify(PSTR("\r\nAddr: "), 0x80);
D_PrintHex<uint8_t > (bAddress, 0x80);
#endif
delay(300); // Spec says you should wait at least 200ms
p->lowspeed = false;
//get pointer to assigned address record
p = addrPool.GetUsbDevicePtr(bAddress);
if (!p)
return USB_ERROR_ADDRESS_NOT_FOUND_IN_POOL;
p->lowspeed = lowspeed;
// Assign epInfo to epinfo pointer - only EP0 is known
rcode = pUsb->setEpInfoEntry(bAddress, 1, epInfo);
if (rcode)
goto FailSetDevTblEntry;
/* The application will work in reduced host mode, so we can save program and data
memory space. After verifying the VID we will use known values for the
configuration values for device, interface, endpoints and HID for the XBOX controllers */
/* Initialize data structures for endpoints of device */
epInfo[ XBOX_INPUT_PIPE ].epAddr = 0x01; // XBOX report endpoint
epInfo[ XBOX_INPUT_PIPE ].epAttribs = EP_INTERRUPT;
epInfo[ XBOX_INPUT_PIPE ].bmNakPower = USB_NAK_NOWAIT; // Only poll once for interrupt endpoints
epInfo[ XBOX_INPUT_PIPE ].maxPktSize = EP_MAXPKTSIZE;
epInfo[ XBOX_INPUT_PIPE ].bmSndToggle = bmSNDTOG0;
epInfo[ XBOX_INPUT_PIPE ].bmRcvToggle = bmRCVTOG0;
epInfo[ XBOX_OUTPUT_PIPE ].epAddr = 0x02; // XBOX output endpoint
epInfo[ XBOX_OUTPUT_PIPE ].epAttribs = EP_INTERRUPT;
epInfo[ XBOX_OUTPUT_PIPE ].bmNakPower = USB_NAK_NOWAIT; // Only poll once for interrupt endpoints
epInfo[ XBOX_OUTPUT_PIPE ].maxPktSize = EP_MAXPKTSIZE;
epInfo[ XBOX_OUTPUT_PIPE ].bmSndToggle = bmSNDTOG0;
epInfo[ XBOX_OUTPUT_PIPE ].bmRcvToggle = bmRCVTOG0;
rcode = pUsb->setEpInfoEntry(bAddress, 3, epInfo);
if (rcode)
goto FailSetDevTblEntry;
delay(200); // Give time for address change
rcode = pUsb->setConf(bAddress, epInfo[ XBOX_CONTROL_PIPE ].epAddr, 1);
if (rcode)
goto FailSetConfDescr;
#ifdef DEBUG_USB_HOST
Notify(PSTR("\r\nXbox Controller Connected\r\n"), 0x80);
#endif
if (pFuncOnInit)
pFuncOnInit(); // Call the user function
XboxConnected = true;
bPollEnable = true;
return 0; // Successful configuration
/* Diagnostic messages */
FailGetDevDescr:
#ifdef DEBUG_USB_HOST
NotifyFailGetDevDescr();
goto Fail;
#endif
FailSetDevTblEntry:
#ifdef DEBUG_USB_HOST
NotifyFailSetDevTblEntry();
goto Fail;
#endif
FailSetConfDescr:
#ifdef DEBUG_USB_HOST
NotifyFailSetConfDescr();
goto Fail;
#endif
FailUnknownDevice:
#ifdef DEBUG_USB_HOST
NotifyFailUnknownDevice(VID, PID);
#endif
rcode = USB_DEV_CONFIG_ERROR_DEVICE_NOT_SUPPORTED;
Fail:
#ifdef DEBUG_USB_HOST
Notify(PSTR("\r\nXbox Init Failed, error code: "), 0x80);
NotifyFail(rcode);
#endif
Release();
return rcode;
}
/* Performs a cleanup after failed Init() attempt */
uint8_t XBOXUSBOLD::Release() {
XboxConnected = false;
pUsb->GetAddressPool().FreeAddress(bAddress);
bAddress = 0;
bPollEnable = false;
return 0;
}
uint8_t XBOXUSBOLD::Poll() {
if (!bPollEnable)
return 0;
uint16_t BUFFER_SIZE = EP_MAXPKTSIZE;
pUsb->inTransfer(bAddress, epInfo[ XBOX_INPUT_PIPE ].epAddr, &BUFFER_SIZE, readBuf); // input on endpoint 1
readReport();
#ifdef PRINTREPORT
printReport(BUFFER_SIZE); // Uncomment "#define PRINTREPORT" to print the report send by the Xbox controller
#endif
return 0;
}
void XBOXUSBOLD::readReport() {
ButtonState = readBuf[2];
for (uint8_t i = 0; i < sizeof(buttonValues); i++)
buttonValues[i] = readBuf[i + 4]; // A, B, X, Y, BLACK, WHITE, L1, and R1
hatValue[LeftHatX] = (int16_t)(((uint16_t)readBuf[12] << 8) | readBuf[13]);
hatValue[LeftHatY] = (int16_t)(((uint16_t)readBuf[14] << 8) | readBuf[15]);
hatValue[RightHatX] = (int16_t)(((uint16_t)readBuf[16] << 8) | readBuf[17]);
hatValue[RightHatY] = (int16_t)(((uint16_t)readBuf[18] << 8) | readBuf[19]);
//Notify(PSTR("\r\nButtonState"), 0x80);
//PrintHex<uint8_t>(ButtonState, 0x80);
if (ButtonState != OldButtonState || memcmp(buttonValues, oldButtonValues, sizeof(buttonValues)) != 0) {
ButtonClickState = ButtonState & ~OldButtonState; // Update click state variable
OldButtonState = ButtonState;
for (uint8_t i = 0; i < sizeof(buttonValues); i++) {
if (oldButtonValues[i] == 0 && buttonValues[i] != 0)
buttonClicked[i] = true; // Update A, B, X, Y, BLACK, WHITE, L1, and R1 click state
oldButtonValues[i] = buttonValues[i];
}
}
}
void XBOXUSBOLD::printReport(uint16_t length) { //Uncomment "#define PRINTREPORT" to print the report send by the Xbox controller
#ifdef PRINTREPORT
if (readBuf == NULL)
return;
for (uint8_t i = 0; i < length; i++) {
D_PrintHex<uint8_t > (readBuf[i], 0x80);
Notify(PSTR(" "), 0x80);
}
Notify(PSTR("\r\n"), 0x80);
#endif
}
uint8_t XBOXUSBOLD::getButtonPress(Button b) {
if (b == A || b == B || b == X || b == Y || b == BLACK || b == WHITE || b == L1 || b == R1) // A, B, X, Y, BLACK, WHITE, L1, and R1 are analog buttons
return buttonValues[pgm_read_byte(&XBOXOLDBUTTONS[(uint8_t)b])]; // Analog buttons
return (ButtonState & pgm_read_byte(&XBOXOLDBUTTONS[(uint8_t)b])); // Digital buttons
}
bool XBOXUSBOLD::getButtonClick(Button b) {
uint8_t button;
if (b == A || b == B || b == X || b == Y || b == BLACK || b == WHITE || b == L1 || b == R1) { // A, B, X, Y, BLACK, WHITE, L1, and R1 are analog buttons
button = pgm_read_byte(&XBOXOLDBUTTONS[(uint8_t)b]);
if (buttonClicked[button])
buttonClicked[button] = false;
return buttonClicked[button];
}
button = pgm_read_byte(&XBOXOLDBUTTONS[(uint8_t)b]); // Digital buttons
bool click = (ButtonClickState & button);
ButtonClickState &= ~button; // clear "click" event
return click;
}
int16_t XBOXUSBOLD::getAnalogHat(AnalogHat a) {
return hatValue[a];
}
/* Xbox Controller commands */
void XBOXUSBOLD::XboxCommand(uint8_t* data, uint16_t nbytes) {
//bmRequest = Host to device (0x00) | Class (0x20) | Interface (0x01) = 0x21, bRequest = Set Report (0x09), Report ID (0x00), Report Type (Output 0x02), interface (0x00), datalength, datalength, data)
pUsb->ctrlReq(bAddress, epInfo[XBOX_CONTROL_PIPE].epAddr, bmREQ_HID_OUT, HID_REQUEST_SET_REPORT, 0x00, 0x02, 0x00, nbytes, nbytes, data, NULL);
}
void XBOXUSBOLD::setRumbleOn(uint8_t lValue, uint8_t rValue) {
writeBuf[0] = 0x00;
writeBuf[1] = 0x06;
writeBuf[2] = 0x00;
writeBuf[3] = rValue; // small weight
writeBuf[4] = 0x00;
writeBuf[5] = lValue; // big weight
XboxCommand(writeBuf, 6);
}

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XBOXUSBOLD.h Normal file
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/* Copyright (C) 2013 Kristian Lauszus, TKJ Electronics. All rights reserved.
This software may be distributed and modified under the terms of the GNU
General Public License version 2 (GPL2) as published by the Free Software
Foundation and appearing in the file GPL2.TXT included in the packaging of
this file. Please note that GPL2 Section 2[b] requires that all works based
on this software must also be made publicly available under the terms of
the GPL2 ("Copyleft").
Contact information
-------------------
Kristian Lauszus, TKJ Electronics
Web : http://www.tkjelectronics.com
e-mail : kristianl@tkjelectronics.com
*/
#ifndef _xboxusbold_h_
#define _xboxusbold_h_
#if defined(ARDUINO) && ARDUINO >= 100
#include "Arduino.h"
#else
#include "WProgram.h"
#endif
#include "Usb.h"
#include "controllerEnums.h"
/* Data Xbox taken from descriptors */
#define EP_MAXPKTSIZE 32 // max size for data via USB
/* Endpoint types */
#define EP_INTERRUPT 0x03
/* Names we give to the 3 Xbox pipes */
#define XBOX_CONTROL_PIPE 0
#define XBOX_INPUT_PIPE 1
#define XBOX_OUTPUT_PIPE 2
// PID and VID of the different devices
#define XBOX_VID 0x045E // Microsoft Corporation
#define XBOX_OLD_PID 0x0289 // The original Xbox controller
#define MADCATZ_VID 0x1BAD // For unofficial Mad Catz controllers
#define JOYTECH_VID 0x162E // For unofficial Joytech controllers
// Used in control endpoint header for HID Commands
#define bmREQ_HID_OUT USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_INTERFACE
#define HID_REQUEST_SET_REPORT 0x09
#define XBOX_MAX_ENDPOINTS 3
/** This class implements support for a Xbox wired controller via USB. */
class XBOXUSBOLD : public USBDeviceConfig {
public:
/**
* Constructor for the XBOXUSB class.
* @param pUsb Pointer to USB class instance.
*/
XBOXUSBOLD(USB *pUsb);
/** @name USBDeviceConfig implementation */
/**
* Initialize the Xbox Controller.
* @param parent Hub number.
* @param port Port number on the hub.
* @param lowspeed Speed of the device.
* @return 0 on success.
*/
virtual uint8_t Init(uint8_t parent, uint8_t port, bool lowspeed);
/**
* Release the USB device.
* @return 0 on success.
*/
virtual uint8_t Release();
/**
* Poll the USB Input endpoins and run the state machines.
* @return 0 on success.
*/
virtual uint8_t Poll();
/**
* Get the device address.
* @return The device address.
*/
virtual uint8_t GetAddress() {
return bAddress;
};
/**
* Used to check if the controller has been initialized.
* @return True if it's ready.
*/
virtual bool isReady() {
return bPollEnable;
};
/**
* Used by the USB core to check what this driver support.
* @param vid The device's VID.
* @param pid The device's PID.
* @return Returns true if the device's VID and PID matches this driver.
*/
virtual boolean VIDPIDOK(uint16_t vid, uint16_t pid) {
return ((vid == XBOX_VID || vid == MADCATZ_VID || vid == JOYTECH_VID) && pid == XBOX_OLD_PID);
};
/**@}*/
/** @name Xbox Controller functions */
/**
* getButtonPress(Button b) will return true as long as the button is held down.
*
* While getButtonClick(Button b) will only return it once.
*
* So you instance if you need to increase a variable once you would use getButtonClick(Button b),
* but if you need to drive a robot forward you would use getButtonPress(Button b).
* @param b ::Button to read.
* @return getButtonClick(Button b) will return a bool, but getButtonPress(Button b)
* will return a byte if reading ::L2 or ::R2.
*/
uint8_t getButtonPress(Button b);
bool getButtonClick(Button b);
/**@}*/
/** @name Xbox Controller functions */
/**
* Return the analog value from the joysticks on the controller.
* @param a Either ::LeftHatX, ::LeftHatY, ::RightHatX or ::RightHatY.
* @return Returns a signed 16-bit integer.
*/
int16_t getAnalogHat(AnalogHat a);
/** Turn rumble off the controller. */
void setRumbleOff() {
setRumbleOn(0, 0);
};
/**
* Turn rumble on.
* @param lValue Left motor (big weight) inside the controller.
* @param rValue Right motor (small weight) inside the controller.
*/
void setRumbleOn(uint8_t lValue, uint8_t rValue);
/**
* Used to call your own function when the controller is successfully initialized.
* @param funcOnInit Function to call.
*/
void attachOnInit(void (*funcOnInit)(void)) {
pFuncOnInit = funcOnInit;
};
/**@}*/
/** True if a Xbox controller is connected. */
bool XboxConnected;
protected:
/** Pointer to USB class instance. */
USB *pUsb;
/** Device address. */
uint8_t bAddress;
/** Endpoint info structure. */
EpInfo epInfo[XBOX_MAX_ENDPOINTS];
private:
/**
* Called when the controller is successfully initialized.
* Use attachOnInit(void (*funcOnInit)(void)) to call your own function.
* This is useful for instance if you want to set the LEDs in a specific way.
*/
void (*pFuncOnInit)(void); // Pointer to function called in onInit()
bool bPollEnable;
/* Variables to store the digital buttons */
uint8_t ButtonState;
uint8_t OldButtonState;
uint8_t ButtonClickState;
/* Variables to store the analog buttons */
uint8_t buttonValues[8]; // A, B, X, Y, BLACK, WHITE, L1, and R1
uint8_t oldButtonValues[8];
bool buttonClicked[8];
int16_t hatValue[4]; // Joystick values
uint8_t readBuf[EP_MAXPKTSIZE]; // General purpose buffer for input data
uint8_t writeBuf[EP_MAXPKTSIZE]; // General purpose buffer for output data
void readReport(); // Read incoming data
void printReport(uint16_t length); // Print incoming date
/* Private commands */
void XboxCommand(uint8_t* data, uint16_t nbytes);
};
#endif

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@ -100,6 +100,8 @@ enum Button {
Y = 15, Y = 15,
XBOX = 16, XBOX = 16,
SYNC = 17, SYNC = 17,
BLACK = 8, // Available on the original Xbox controller
WHITE = 9, // Available on the original Xbox controller
/**@}*/ /**@}*/
}; };

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@ -0,0 +1,97 @@
/*
Example sketch for the original Xbox library - developed by Kristian Lauszus
For more information visit my blog: http://blog.tkjelectronics.dk/ or
send me an e-mail: kristianl@tkjelectronics.com
*/
#include <XBOXUSBOLD.h>
USB Usb;
XBOXUSBOLD Xbox(&Usb);
void setup() {
Serial.begin(115200);
if (Usb.Init() == -1) {
Serial.print(F("\r\nOSC did not start"));
while(1); // halt
}
Serial.print(F("\r\nXBOX Library Started"));
}
void loop() {
Usb.Task();
if(Xbox.XboxConnected) {
if(Xbox.getButtonPress(BLACK) || Xbox.getButtonPress(WHITE)) {
Serial.print("BLACK: ");
Serial.print(Xbox.getButtonPress(BLACK));
Serial.print("\tWHITE: ");
Serial.println(Xbox.getButtonPress(WHITE));
Xbox.setRumbleOn(Xbox.getButtonPress(BLACK),Xbox.getButtonPress(WHITE));
} else
Xbox.setRumbleOn(0,0);
if(Xbox.getAnalogHat(LeftHatX) > 7500 || Xbox.getAnalogHat(LeftHatX) < -7500 || Xbox.getAnalogHat(LeftHatY) > 7500 || Xbox.getAnalogHat(LeftHatY) < -7500 || Xbox.getAnalogHat(RightHatX) > 7500 || Xbox.getAnalogHat(RightHatX) < -7500 || Xbox.getAnalogHat(RightHatY) > 7500 || Xbox.getAnalogHat(RightHatY) < -7500) {
if(Xbox.getAnalogHat(LeftHatX) > 7500 || Xbox.getAnalogHat(LeftHatX) < -7500) {
Serial.print(F("LeftHatX: "));
Serial.print(Xbox.getAnalogHat(LeftHatX));
Serial.print("\t");
}
if(Xbox.getAnalogHat(LeftHatY) > 7500 || Xbox.getAnalogHat(LeftHatY) < -7500) {
Serial.print(F("LeftHatY: "));
Serial.print(Xbox.getAnalogHat(LeftHatY));
Serial.print("\t");
}
if(Xbox.getAnalogHat(RightHatX) > 7500 || Xbox.getAnalogHat(RightHatX) < -7500) {
Serial.print(F("RightHatX: "));
Serial.print(Xbox.getAnalogHat(RightHatX));
Serial.print("\t");
}
if(Xbox.getAnalogHat(RightHatY) > 7500 || Xbox.getAnalogHat(RightHatY) < -7500) {
Serial.print(F("RightHatY: "));
Serial.print(Xbox.getAnalogHat(RightHatY));
}
Serial.println();
}
if(Xbox.getButtonClick(UP))
Serial.println(F("Up"));
if(Xbox.getButtonClick(DOWN))
Serial.println(F("Down"));
if(Xbox.getButtonClick(LEFT))
Serial.println(F("Left"));
if(Xbox.getButtonClick(RIGHT))
Serial.println(F("Right"));
if(Xbox.getButtonClick(START))
Serial.println(F("Start"));
if(Xbox.getButtonClick(BACK))
Serial.println(F("Back"));
if(Xbox.getButtonClick(L3))
Serial.println(F("L3"));
if(Xbox.getButtonClick(R3))
Serial.println(F("R3"));
if(Xbox.getButtonPress(A)) {
Serial.print(F("A: "));
Serial.println(Xbox.getButtonPress(A));
}
if(Xbox.getButtonPress(B)) {
Serial.print(F("B: "));
Serial.println(Xbox.getButtonPress(B));
}
if(Xbox.getButtonPress(X)) {
Serial.print(F("X: "));
Serial.println(Xbox.getButtonPress(X));
}
if(Xbox.getButtonPress(Y)) {
Serial.print(F("Y: "));
Serial.println(Xbox.getButtonPress(Y));
}
if(Xbox.getButtonPress(L1)) {
Serial.print(F("L1: "));
Serial.println(Xbox.getButtonPress(L1));
}
if(Xbox.getButtonPress(R1)) {
Serial.print(F("R1: "));
Serial.println(Xbox.getButtonPress(R1));
}
}
delay(1);
}

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@ -164,6 +164,7 @@ RumbleLow LITERAL1
#################################################### ####################################################
XBOXUSB KEYWORD1 XBOXUSB KEYWORD1
XBOXUSBOLD KEYWORD1
XBOXRECV KEYWORD1 XBOXRECV KEYWORD1
#################################################### ####################################################
@ -195,6 +196,9 @@ BACK LITERAL1
XBOX LITERAL1 XBOX LITERAL1
SYNC LITERAL1 SYNC LITERAL1
BLACK LITERAL1
WHITE LITERAL1
A LITERAL1 A LITERAL1
B LITERAL1 B LITERAL1
X LITERAL1 X LITERAL1