arduino学习笔记PS2无线手柄实验

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   用无线手柄通过arduino控制电机或者舵机之类的，是不是感觉很遥远。。。光那底层的通信协议就吓跑了。。。
不用怕。。有开源社区贡献的arduino PS2X库，一切皆有可能。

先说明一下手柄的要求，此PS2X库，尽量是使用PS2原装手柄，或者与之外观一样的。无线手柄可以直接接arduino使用，有线手柄因为arduino的3.3V供电不足，需要单独供电。
市面上也有不少PS2手柄，但是长得和PS2原装手柄有区别，这种手柄可以在PS2主机上使用，不一定可以配合此库使用，笔者就遇到这个问题。。。。。买回来的罗技手柄虽然手感一流，但是@@部分按键反应不灵敏（PS2主机上完美）。这也是因为这个库是逆向破解PS2协议的原因，所以肯定有哪里不太完美。

先上硬件连接图，按照图示把线接好。

然后把论坛附件中的PS2X库解压缩后放入IDE的libraries文件夹中。把下面代码复制进IDE编译，下载到arduino板子上。此代码就是PS2X库的示例，详细库使用方法请查看库中的说明文件

• #include <PS2X_lib.h>  //for v1.6
• PS2X ps2x; // create PS2 Controller Class
• //right now, the library does NOT support hot pluggable controllers, meaning
• //you must always either restart your Arduino after you conect the controller,
• //or call config_gamepad(pins) again after connecting the controller.
• int error = 0;
• byte type = 0;
• byte vibrate = 0;
• void setup(){
• Serial.begin(57600);
• //CHANGES for v1.6 HERE!!! **************PAY ATTENTION*************
• error = ps2x.config_gamepad(13,11,10,12, true, true);   //setup pins and settings:  GamePad(clock, command, attention, data, Pressures?, Rumble?) check for error
• if(error == 0){
•    Serial.println("Found Controller, configured successful");
•    Serial.println("Try out all the buttons, X will vibrate the controller, faster as you press harder;");
•   Serial.println("holding L1 or R1 will print out the analog stick values.");
•   Serial.println("Go to www.billporter.info for updates and to report bugs.");
• }
•   else if(error == 1)
•    Serial.println("No controller found, check wiring, see readme.txt to enable debug. visit www.billporter.info for troubleshooting tips");
•   else if(error == 2)
•    Serial.println("Controller found but not accepting commands. see readme.txt to enable debug. Visit www.billporter.info for troubleshooting tips");
•   else if(error == 3)
•    Serial.println("Controller refusing to enter Pressures mode, may not support it. ");
•    //Serial.print(ps2x.Analog(1), HEX);
•    type = ps2x.readType();
•      switch(type) {
•        case 0:
•         Serial.println("Unknown Controller type");
•        break;
•        case 1:
•         Serial.println("DualShock Controller Found");
•        break;
•        case 2:
•          Serial.println("GuitarHero Controller Found");
•        break;
•      }
• }
• void loop(){
•    /* You must Read Gamepad to get new values
•    Read GamePad and set vibration values
•    ps2x.read_gamepad(small motor on/off, larger motor strenght from 0-255)
•    if you don't enable the rumble, use ps2x.read_gamepad(); with no values
•    you should call this at least once a second
•    */
• if(error == 1) //skip loop if no controller found
•   return;
• if(type == 2){ //Guitar Hero Controller
•    ps2x.read_gamepad();          //read controller
•    if(ps2x.ButtonPressed(GREEN_FRET))
•      Serial.println("Green Fret Pressed");
•    if(ps2x.ButtonPressed(RED_FRET))
•      Serial.println("Red Fret Pressed");
•    if(ps2x.ButtonPressed(YELLOW_FRET))
•      Serial.println("Yellow Fret Pressed");
•    if(ps2x.ButtonPressed(BLUE_FRET))
•      Serial.println("Blue Fret Pressed");
•    if(ps2x.ButtonPressed(ORANGE_FRET))
•      Serial.println("Orange Fret Pressed");
•     if(ps2x.ButtonPressed(STAR_POWER))
•      Serial.println("Star Power Command");
•     if(ps2x.Button(UP_STRUM))          //will be TRUE as long as button is pressed
•      Serial.println("Up Strum");
•     if(ps2x.Button(DOWN_STRUM))
•      Serial.println("DOWN Strum");
•     if(ps2x.Button(PSB_START))                   //will be TRUE as long as button is pressed
•          Serial.println("Start is being held");
•     if(ps2x.Button(PSB_SELECT))
•          Serial.println("Select is being held");
•     if(ps2x.Button(ORANGE_FRET)) // print stick value IF TRUE
•     {
•         Serial.print("Wammy Bar Position:");
•         Serial.println(ps2x.Analog(WHAMMY_BAR), DEC);
•     }
• }
• else { //DualShock Controller
•     ps2x.read_gamepad(false, vibrate);          //read controller and set large motor to spin at 'vibrate' speed
•     if(ps2x.Button(PSB_START))                   //will be TRUE as long as button is pressed
•          Serial.println("Start is being held");
•     if(ps2x.Button(PSB_SELECT))
•          Serial.println("Select is being held");
•      if(ps2x.Button(PSB_PAD_UP)) {         //will be TRUE as long as button is pressed
•        Serial.print("Up held this hard: ");
•        Serial.println(ps2x.Analog(PSAB_PAD_UP), DEC);
•       }
•       if(ps2x.Button(PSB_PAD_RIGHT)){
•        Serial.print("Right held this hard: ");
•         Serial.println(ps2x.Analog(PSAB_PAD_RIGHT), DEC);
•       }
•       if(ps2x.Button(PSB_PAD_LEFT)){
•        Serial.print("LEFT held this hard: ");
•         Serial.println(ps2x.Analog(PSAB_PAD_LEFT), DEC);
•       }
•       if(ps2x.Button(PSB_PAD_DOWN)){
•        Serial.print("DOWN held this hard: ");
•      Serial.println(ps2x.Analog(PSAB_PAD_DOWN), DEC);
•       }
•       vibrate = ps2x.Analog(PSAB_BLUE);        //this will set the large motor vibrate speed based on
•                                               //how hard you press the blue (X) button
•     if (ps2x.NewButtonState())               //will be TRUE if any button changes state (on to off, or off to on)
•     {
•         if(ps2x.Button(PSB_L3))
•          Serial.println("L3 pressed");
•         if(ps2x.Button(PSB_R3))
•          Serial.println("R3 pressed");
•         if(ps2x.Button(PSB_L2))
•          Serial.println("L2 pressed");
•         if(ps2x.Button(PSB_R2))
•          Serial.println("R2 pressed");
•         if(ps2x.Button(PSB_GREEN))
•          Serial.println("Triangle pressed");
•     }
•     if(ps2x.ButtonPressed(PSB_RED))             //will be TRUE if button was JUST pressed
•          Serial.println("Circle just pressed");
•     if(ps2x.ButtonReleased(PSB_PINK))             //will be TRUE if button was JUST released
•          Serial.println("Square just released");
•     if(ps2x.NewButtonState(PSB_BLUE))            //will be TRUE if button was JUST pressed OR released
•          Serial.println("X just changed");
•     if(ps2x.Button(PSB_L1) || ps2x.Button(PSB_R1)) // print stick values if either is TRUE
•     {
•         Serial.print("Stick Values:");
•         Serial.print(ps2x.Analog(PSS_LY), DEC); //Left stick, Y axis. Other options: LX, RY, RX
•         Serial.print(",");
•         Serial.print(ps2x.Analog(PSS_LX), DEC);
•         Serial.print(",");
•         Serial.print(ps2x.Analog(PSS_RY), DEC);
•         Serial.print(",");
•         Serial.println(ps2x.Analog(PSS_RX), DEC);
•     }
• }
• delay(50);
• }