使用ps2通讯

ps2使用了2.4g无线通讯技术，频段在2.405GHz到2.485GHz之间，

也是国际规定的免费频道，属全双工模式。传输距离远，抗干扰性强。

接线说明：

#include <PS2X_lib.h>


////////////定义通讯器变量///////////////////////////////////////////////////////////
PS2X ps2x;
int error = 0;
byte type = 0;
byte vibrate = 0;
//通讯针脚
int pin_data = 12;
int pin_command = 11;
int pin_attention = 10;
int pin_clk = 13;
//定义初始化通讯器方法
void initPs2() {
  error = ps2x.config_gamepad(pin_clk, pin_command, pin_attention, pin_data, true, true);
  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 setup() {
  Serial.begin(57600);//打开串口监听
  initPs2();
}
void loop() {
  if (error == 1) {
    return;
  }
  if (type == 2) {
    ps2x.read_gamepad();
    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))
      Serial.println("Up Strum");
    if (ps2x.Button(DOWN_STRUM))
      Serial.println("DOWN Strum");
    if (ps2x.Button(PSB_START))
      Serial.println("Start is being held");
    if (ps2x.Button(PSB_SELECT))
      Serial.println("Select is being held");
    if (ps2x.Button(ORANGE_FRET))
    {
      Serial.print("Wammy Bar Position:");
      Serial.println(ps2x.Analog(WHAMMY_BAR), DEC);
    }
  }
  else {
    ps2x.read_gamepad(false, vibrate);
    if (ps2x.Button(PSB_START))
      Serial.println("Start is being held");
    if (ps2x.Button(PSB_SELECT))
      Serial.println("Select is being held");
    if (ps2x.Button(PSB_PAD_UP)) {
      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);
    if (ps2x.NewButtonState())
    {
      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))
      Serial.println("Circle just pressed");
    if (ps2x.ButtonReleased(PSB_PINK))
      Serial.println("Square just released");
    if (ps2x.NewButtonState(PSB_BLUE))
      Serial.println("X just changed");
    if (ps2x.Button(PSB_L1) || ps2x.Button(PSB_R1))
    {
      Serial.print("Stick Values:");
      Serial.print(ps2x.Analog(PSS_LY), DEC);
      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);
}