#include <SoftwareSerial.h>
#include <EEPROM.h>
SoftwareSerial TJC(A8, A9);
//#define TJC Serial
#define FRAME_LENGTH 5
uint16_t modbus_crc16(unsigned char *data, uint8_t length) {
  uint16_t crc = 0xFFFF;

  for (uint8_t i = 0; i < length; i++) {
    crc ^= data[i];
    for (uint8_t j = 8; j > 0; j--) {
      if (crc & 0x0001) {
        crc = (crc >> 1) ^ 0xA001;
      } else {
        crc >>= 1;
      }
    }
  }

  return crc;
}
char str[100];
int set[8];
int control_outside = 1;
int reset_step = 0;
int height1 = 0;
int height2 = 0;
void refsh_setting() {
  reset_step = 20;
  for  (int i = 0; i < 4; i++) {
    int lb = EEPROM.read(4 + i * 2);
    int hb = EEPROM.read(5 + i * 2);
    lb = hb * 256 + lb;
    set[i] = lb;
    sprintf(str, "x%d.val=%d\xff\xff\xff", i, lb);
    TJC.print(str);
  }
  //control_outside = EEPROM.read(0x14);
  //sprintf(str, "n0.val=%d\xff\xff\xff", control_outside);
  //TJC.print(str);
  //sprintf(str, "bt0.val=%d\xff\xff\xff", control_outside);
  //TJC.print(str);
  //reset_step = EEPROM.read(0x15);
  //sprintf(str, "n1.val=%d\xff\xff\xff", reset_step);
  //TJC.print(str);
  //sprintf(str, "t10.txt=\"-2000\"\xff\xff\xff");
  //TJC.print(str);
  //sprintf(str, "h0.val=2000\xff\xff\xff");
  //TJC.print(str);
  //sprintf(str, "h0.maxval=4000\xff\xff\xff");
  //TJC.print(str);
}

void setup() {
  TJC.begin(9600);
  Serial.begin(9600);
  Serial.println(9600);
  for (int i = 2; i <= 20; i++) {
    pinMode(i, OUTPUT);
  }
  for (int i = 26; i <= 40; i++) {
    pinMode(i , INPUT);
  }
  refsh_setting();
}

//26-38输入2-19输出
byte DI[15] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
byte DO[19] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
void refesh_io() {
  int val = 0;
  for (int i = 0; i < 15; i++) {
    val = digitalRead(i + 26);
    if (val != DI[i]) {
      DI[i] = val;
      sprintf(str, "DI%d.val=%d\xff\xff\xff", i, val);
      TJC.print(str);
    }
  }
  for (int i = 0; i < 19; i++) {
    val = digitalRead(i + 2);
    if (val != DO[i]) {
      DO[i] = val;
      sprintf(str, "DO%d.val=%d\xff\xff\xff", i, val);
      TJC.print(str);
    }
  }
}
void refesh_io1() {
  int val = 0;
  for (int i = 0; i < 15; i++) {
    val = digitalRead(i + 26);
    DI[i] = val;
    sprintf(str, "DI%d.val=%d\xff\xff\xff", i, val);
    TJC.print(str);
  }
  for (int i = 0; i < 19; i++) {
    val = digitalRead(i + 2);
    DO[i] = val;
    sprintf(str, "DO%d.val=%d\xff\xff\xff", i, val);
    TJC.print(str);
  }
}

int step = -1; //外设控制步骤
int tstep = -1;
int tdelayc = 0;
float ma[2];
float pa[2];
void screw() {

  float tpa[2];//start delta
  while (tstep != -1) {

    while (tdelayc > 0) {
      if (digitalRead(27)) { //停止按钮
        tstep = 6;
        tdelayc = 1;
      }

      if (digitalRead(29) && control_outside == 1) { //复位按钮
        tstep = 6;
        tdelayc = 1;
      }


      delay(100);
      tdelayc = tdelayc - 1;
    }
    switch (tstep) {
      case 0://伺服启动
        //sprintf(str, "page 1\xff\xff\xfft2.txt=\"  \"\xff\xff\xfft2.bco=1048\xff\xff\xfft7.txt=\"X10pa\"\xff\xff\xffleak.pco=1048\xff\xff\xff");
        sprintf(str, "t13.txt=\"伺服启动\"\xff\xff\xff");
        TJC.print(str);
        digitalWrite(16, HIGH);
        digitalWrite(18, HIGH);
        tstep = tstep + 1;
        tstep = -1;
        break;
      case 1://检测伺服输出信号
        if (digitalRead(37) && digitalRead(39)) {
          digitalWrite(16, LOW);
          digitalWrite(18, LOW);
          sprintf(str, "t13.txt=\"拧紧完成\"\xff\xff\xff");
          TJC.print(str);
          tstep = tstep + 1;
        }
        if (digitalRead(38) || digitalRead(40)) {
          digitalWrite(3, HIGH);
          digitalWrite(16, LOW);
          digitalWrite(18, LOW);
          sprintf(str, "t13.txt=\"拧紧失败\"\xff\xff\xff");
          TJC.print(str);
          tstep = -1;
        }
        break;
      case 2://滑台上升
        digitalWrite(12, LOW);
        digitalWrite(14, LOW);
        digitalWrite(13, HIGH);
        digitalWrite(15, HIGH);
        tstep = tstep + 1;
        break;
      case 3://上升到位
        if (digitalRead(33) && digitalRead(35)) {
          digitalWrite(13, LOW);
          digitalWrite(15, LOW);
          digitalWrite(10, HIGH);
          tstep = tstep + 1;
          break;
        }
      case 4://向左到位
        if (digitalRead(31)) {
          digitalWrite(10, LOW);
          digitalWrite(12, HIGH);
          digitalWrite(14, HIGH);
          tstep = tstep + 1;
          break;
        }

      case 5://测高度
        if (digitalRead(34) && digitalRead(36)) {
          height1 = analogRead(A0);
          height2 = analogRead(A1);
          sprintf(str, "height1.val=d%\xff\xff\xff", height1);
          TJC.print(str);
          sprintf(str, "height2.val=d%\xff\xff\xff", height2);
          TJC.print(str);
          tstep = tstep + 1;
          break;
        }
      case 6://滑台上升
        digitalWrite(12, LOW);
        digitalWrite(14, LOW);
        digitalWrite(13, HIGH);
        digitalWrite(15, HIGH);
        tstep = tstep + 1;
        break;
      case 7://上升到位
        if (digitalRead(33) && digitalRead(35)) {
          digitalWrite(13, LOW);
          digitalWrite(15, LOW);
          digitalWrite(11, HIGH);
          tstep = tstep + 1;
          break;
        }
      case 8://向右到位
        if (digitalRead(31)) {
          digitalWrite(11, LOW);
          tstep = -1;
        }
        break;
    }
    refesh_io();
  }
}

int cpin = -1; //当前控制引脚
int cdir = HIGH;
int dstep = -1;//延时
int pstep = -1;//暂停
int delayc = 0;//延时时间*10ms
int paused = 0;
void control_device() {
  // delayc=delay_clcle:
  //sprintf(str, "control_outside()");
  //Serial.print(str);
  if (step == -1) {
    return;
  }
  if (step == 0) {
    sprintf(str, "va8.val=0\xff\xff\xff");
    TJC.print(str);
  }
  if (step == reset_step) { //显示复位
    sprintf(str, "t13.txt=\"正在复位\"\xff\xff\xff");
    TJC.print(str);
  }


  while (step != -1) {
    refesh_io();
    Serial.println(step);
    //  height1 =  analogRead(A0);
 // height2 = analogRead(A1);
 // Serial.println(height1);
  //Serial.println(height2);
    //delay(500);
    if (delayc > 0) {
      if (step != -1) {
        dstep = step;
        step = -1;
      }
      delay(10);
      delayc = delayc - 1;
    }
    else if (step == -1 && dstep != -1) {
      step = dstep;
      dstep = -1;
    }

    if (!digitalRead(27)) { //停止按钮
      sprintf(str, "t13.txt=\"急停\"\xff\xff\xfft13.pco=63488\xff\xff\xff");
      TJC.print(str);
      step = -1;
      tstep == -1;
      dstep == -1;
      pstep == -1;
      delayc = 1;
      for (int i = 2; i < 19; i++) {
        digitalWrite(i, LOW);
      }

    }
    if (!digitalRead(28) ) { //光栅暂停
      sprintf(str, "t13.txt=\"光栅暂停\"\xff\xff\xfft13.pco=63488\xff\xff\xff");
      TJC.print(str);
      if ( paused == 0 && cpin !=-1) {
        //digitalWrite(cpin, LOW);
        step = step - 1;
        paused = 1;
      }

      continue;
    }
    else if ( paused == 1) {
      sprintf(str, "t13.txt=\"恢复运行\"\xff\xff\xfft13.pco=0\xff\xff\xff");
      TJC.print(str);
      paused = 0;
    }

    switch (step) {
      case 0://滑台原位确认
        sprintf(str, "t2.bco=65535\xff\xff\xfft3.bco=65535\xff\xff\xff");
        TJC.print(str);
        sprintf(str, "height1.bco=65535\xff\xff\xffheight1.bco=65535\xff\xff\xff");
        TJC.print(str);
        sprintf(str, "height1.val=0\xff\xff\xffheight2.val=0\xff\xff\xff");
        TJC.print(str);
        cpin = -1;
        if (digitalRead(32) && digitalRead(33) && digitalRead(35)) {
          step = step + 1;
        } else {
          sprintf(str, "t13.txt=\"滑台不在原点\"\xff\xff\xfft13.pco=63488\xff\xff\xff");
          TJC.print(str);
          step = -1;
        }
        break;
      case 1://检查伺服状态
        cpin = -1;
        if (!digitalRead(38) && !digitalRead(40)) {
          step = step + 1;
        } else {
          sprintf(str, "t13.txt=\"伺服未复位\"\xff\xff\xfft13.pco=63488\xff\xff\xff");
          TJC.print(str);
          step = -1;
        }
        break;
      case 2://压紧
        sprintf(str, "t13.txt=\"工件压紧\"\xff\xff\xfft13.pco=0\xff\xff\xff");
        TJC.print(str);
        digitalWrite(5, LOW);
        cpin = 4;
        cdir = HIGH;
        digitalWrite(cpin, cdir);
        step = step + 1;
        //delayc = 150;//延迟1.5s
        delay(2000);
        break;
      case 3://压紧到位
        step = step + 1;
        sprintf(str, "va8.val=1\xff\xff\xff");
        TJC.print(str);
        break;//屏蔽压紧到位信号
        if (digitalRead(30)) {
          cpin = -1;
          step = step + 1;
          sprintf(str, "va8.val=1\xff\xff\xff");
          TJC.print(str);
        }
        break;
      case 4://滑台下
      digitalWrite(8, LOW);
          digitalWrite(15, LOW);
        cpin = 12;
        cdir = HIGH;
        digitalWrite(cpin, cdir);
        digitalWrite(14, cdir);
        step = step + 1;
        sprintf(str, "va8.val=2\xff\xff\xff");
        TJC.print(str);
        delay(3000);
        //delayc = 300;//延迟3秒
        break;
      case 5://启动拧紧
        cpin = -1;
        sprintf(str, "t13.txt=\"伺服启动\"\xff\xff\xfft13.pco=0\xff\xff\xff");
        TJC.print(str);
        digitalWrite(16, HIGH);
        digitalWrite(18, HIGH);
        step = step + 1;
        sprintf(str, "va8.val=3\xff\xff\xff");
        TJC.print(str);
        break;
      case 6://检测伺服输出信号
        cpin = -1;
        if (digitalRead(37) && digitalRead(39)) {
          digitalWrite(16, LOW);
          digitalWrite(18, LOW);
          sprintf(str, "t13.txt=\"拧紧完成\"\xff\xff\xfft13.pco=0\xff\xff\xff");
          TJC.print(str);
          sprintf(str, "t2.bco=2016\xff\xff\xfft3.bco=2016\xff\xff\xff");
          TJC.print(str);
          step = step + 1;
        }
        if (digitalRead(38) || digitalRead(40)) {
          digitalWrite(3, HIGH);
          sprintf(str, "t13.txt=\"拧紧失败\"\xff\xff\xfft13.pco=63488\xff\xff\xff");
          TJC.print(str);
          if (digitalRead(38)) {
            digitalWrite(16, LOW);
            sprintf(str, "t2.bco=634488\xff\xff\xff");
            TJC.print(str);
          }
          if (digitalRead(40)) {
            digitalWrite(18, LOW);
            sprintf(str, "t3.bco=634488\xff\xff\xff");
            TJC.print(str);
          }
        }
        if (digitalRead(37) && digitalRead(40)) {
          step = -1;
        }
        if (digitalRead(38) && digitalRead(39)) {
          step = -1;
        }
        if (digitalRead(38) && digitalRead(40)) {
          step = -1;
        }
        break;
      case 7://滑台上升
        sprintf(str, "va8.val=4\xff\xff\xff");
        TJC.print(str);
        cpin = 8;
        cdir = HIGH;
        digitalWrite(12, LOW);
        digitalWrite(14, LOW);
        digitalWrite(8, HIGH);
        digitalWrite(15, HIGH);
        step = step + 1;
        //step=12;
        break;
      case 8://上升到位-向左
        if (digitalRead(33) && digitalRead(35)) {
          sprintf(str, "va8.val=5\xff\xff\xff");
          TJC.print(str);
          //digitalWrite(13, LOW);
          //digitalWrite(15, LOW);
          cpin = 10;
          cdir = HIGH;
          digitalWrite(cpin, cdir);
          step = step + 1;
          break;
        }
        break;
      case 9://向左到位-准备测高度
        if (digitalRead(31)) {
          digitalWrite(10, LOW);
          cpin = 12;
          cdir = HIGH;
          sprintf(str, "va8.val=6\xff\xff\xff");
          TJC.print(str);
          //digitalWrite(8, LOW);
          //digitalWrite(15, LOW);
          //digitalWrite(12, HIGH);
          //digitalWrite(14, HIGH);
          step = step + 1;
          break;
        }
        break;
      case 10://下降到位-测高度
      delay(10);
      height1 =  analogRead(A0);
          height2 = analogRead(A1);
          Serial.println(height1);
          Serial.println(height2);
          sprintf(str, "height1.val=%d\xff\xff\xffheight2.val=%d\xff\xff\xff", height1, height2);
          Serial.print(str);
          step=step+1;
        break;
      case 40://下降到位-测高度
        if (digitalRead(34) && digitalRead(36)) {

          sprintf(str, "va8.val=7\xff\xff\xff");
          TJC.print(str);
          cpin = -1;
          height1 =  analogRead(A0);
          height2 = analogRead(A1);
          Serial.println(height1);
          Serial.println(height2);
          sprintf(str, "height1.val=d%\xff\xff\xffheight2.val=d%\xff\xff\xff", height1, height2);
          TJC.print(str);

          if (height1 > set[0] || height1 < set[1]) {
            sprintf(str, "height1.bco=63448\xff\xff\xff");
            TJC.print(str);
            step = -1;
            break;
          } else {
            sprintf(str, "height1.bco=2016\xff\xff\xff");
            TJC.print(str);
          }
          if (height2 > set[2] || height2 < set[3]) {
            sprintf(str, "height2.bco=63448\xff\xff\xff");
            TJC.print(str);
            step = -1;
            break;
          } else {
            sprintf(str, "height2.bco=2016\xff\xff\xff");
            TJC.print(str);
          }
          step = step + 1;
          break;
        }
        break;
      case 11://滑台上升
        sprintf(str, "va8.val=8\xff\xff\xff");
        TJC.print(str);
        cpin = 13;
        cdir = HIGH;
        digitalWrite(12, LOW);
        digitalWrite(14, LOW);
        digitalWrite(8, HIGH);
        digitalWrite(15, HIGH);
        step = step + 1;
        break;
      case 12://上升到位-向右3
        if (digitalRead(33) && digitalRead(35)) {
          sprintf(str, "va8.val=9\xff\xff\xff");
          TJC.print(str);
          cpin = 11;
          cdir = HIGH;
          //digitalWrite(13, LOW);
          //digitalWrite(15, LOW);
          digitalWrite(11, HIGH);
          step = step + 1;
          break;
        }
        break;
      case 13://向右到位-松开
        if (digitalRead(32)) {
          sprintf(str, "va8.val=10\xff\xff\xff");
          TJC.print(str);
          digitalWrite(11, LOW);
          digitalWrite(2, HIGH);
          cpin = 5;
          cdir = HIGH;
          digitalWrite(5, HIGH);
          digitalWrite(4, LOW);
          step = step + 1;
          step = -1;
          delay(3000);
        }
        break;
      case 14://松开完成
        digitalWrite(5, LOW);
        step = -1;
        break;

      case 20://复位
        //滑台上升
        sprintf(str, "t13.txt=\"复位中\"\xff\xff\xfft13.pco=0\xff\xff\xff");
        TJC.print(str);
        cpin = 8;
        cdir = HIGH;
        digitalWrite(3, LOW);
        digitalWrite(12, LOW);
        digitalWrite(14, LOW);
        digitalWrite(8, HIGH);
        digitalWrite(15, HIGH);
        step = step + 1;
        break;
      case 21://上升到位-向右3
        if (digitalRead(33) && digitalRead(35)) {
          cpin = 11;
          cdir = HIGH;
          //digitalWrite(13, LOW);
          //digitalWrite(15, LOW);
          digitalWrite(11, HIGH);
          step = step + 1;
          break;
        }
        break;
      case 22://向右到位-//伺服复位
        if (digitalRead(32)) {
          digitalWrite(11, LOW);
          cpin = -1;
          digitalWrite(17, HIGH);
          digitalWrite(19, HIGH);
          step = step + 1;
        }
        break;
      case 23://松开
        cpin = 5;
        cdir = HIGH;
        digitalWrite(5, HIGH);
        step = step + 1;
        break;
        if (digitalRead(31)) {
          digitalWrite(11, LOW);
          digitalWrite(2, HIGH);
          cpin = 5;
          cdir = HIGH;
          digitalWrite(5, HIGH);
          digitalWrite(4, LOW);
          step = step + 1;
          //delayc = 200;
        }
        break;
      case 24://伺服复位完成-结束
        cpin = -1;
        //delayc = 100;
        sprintf(str, "t13.txt=\"复位完成\"\xff\xff\xfft13.pco=0\xff\xff\xff");
        TJC.print(str);
        sprintf(str, "t2.bco=65535\xff\xff\xfft3.bco=65535\xff\xff\xff");
        TJC.print(str);
        sprintf(str, "height1.bco=65535\xff\xff\xffheight1.bco=65535\xff\xff\xff");
        TJC.print(str);
        sprintf(str, "height1.val=0\xff\xff\xffheight2.val=0\xff\xff\xff");
        TJC.print(str);
        digitalWrite(17, LOW);
        digitalWrite(19, LOW);
        //digitalWrite(5, LOW);
        step = step + 1;
        break;
      case 25:
        step = -1;
        break;

    }

    refesh_io();
    //执行结束
  }
  //sprintf(str, "t13.txt=\"待机\"\xff\xff\xfft13.pco=0\xff\xff\xff");
  //TJC.print(str);
  step = -1;
}
void loop() {


  if (!digitalRead(27)) { //停止按钮
    sprintf(str, "t13.txt=\"急停\"\xff\xff\xfft13.pco=63488\xff\xff\xff");
    TJC.print(str);
    tstep = -1;
    tdelayc = 1;
    for (int i = 2; i < 19; i++) {
      digitalWrite(i, LOW);
    }

  }
  if (digitalRead(26)) { //开始按钮
    step = 0;
    control_device();
  }
  if (digitalRead(29) ) { //复位
    step = reset_step;
    control_device();
  }
  refesh_io();
  //当串口缓冲区大于等于6时
  while (TJC.available() >= FRAME_LENGTH) {
    unsigned char u[FRAME_LENGTH];
    unsigned char frame_header = TJC.peek();



    //通讯格式5位
    //52 00 00 00 00 刷新IO
    //52 00 01 00 00 读充气、平衡、检测、排气时间、控制设备、复位步骤编号
    //52 00 02 xx 00 读xx步骤的输入输出、地址、执行后延迟时间
    //52 03 00 00 00 启动
    //52 03 01 00 00 停止,停止时，tstep=排气步骤
    //52 04 00 00 00 读取传感器数值
    //52 01 xx xx 00 写1位eeprom,1位地址，一位数据，1位00
    //52 02 xx xx xx 写2位eeprom,一位地址，连续两位数据，串口屏输入低位在前高位在后。如写充气时间、检查参数
    //eeprom 0-3 密码，4-5充气时间、6-7平衡，8-9检测，A-B排气，C-D泄漏量，E-F容积，10控制设备，11复位步骤编号，20以上控制步骤


    if (frame_header == 0x52 || frame_header == 0x50 || frame_header == 0x59 || frame_header == 0x79 || frame_header == 0x53 ) {
      //从串口缓冲区读取7字节
      TJC.readBytes(u, FRAME_LENGTH);
      //Serial.println(u[1]);
      if (u[0] == 0x59) {//Y on

        digitalWrite(u[1] + 2, HIGH);
        //sprintf(str, "DO%d.txt=\"ON\"\xff\xff\xff", u[1]);
        //TJC.print(str);

      }
      else if (u[0] == 0x79) {//Y off
        digitalWrite(u[1] + 2, LOW);
        //sprintf(str, "DO%d.txt=\"OFF\"\xff\xff\xff", u[1]);
        //TJC.print(str);
      }
      else if (u[0] == 0x52) {
        if  (u[1] == 0x00 && u[2] == 0x00) { //R 刷新IO
          for (int i = 0; i < 15; i++) {
            DI[i] = 0;
          }
          for (int i = 0; i < 18; i++) {
            DO[i] = 0;
          }
          refesh_io1();
        }
        else if (u[1] == 0x00 && u[2] == 0x01) { //R 刷新设备参数
          refsh_setting();
        }
        else if (u[1] == 0x00 && u[2] == 0x02) { //读工步参数

          int add1 = EEPROM.read(30 + u[3] * 3);
          if (add1 > 10) {
            add1 = 10;
          }
          int ele1 = EEPROM.read(31 + u[3] * 3);
          int  delay1 = EEPROM.read(32 + u[3] * 3) ;
          sprintf(str, "cb0.val=%d\xff\xff\xff", add1);
          TJC.print(str);
          sprintf(str, "cb1.val=%d\xff\xff\xff",  ele1);
          TJC.print(str);
          sprintf(str, "x9.val=%d\xff\xff\xff", delay1);
          TJC.print(str);
        }
        else if (u[1] == 0x01) { //写1位eeprom
          EEPROM.update(u[2], u[3]);
        }
        else if (u[1] == 0x02) { //写2位eeprom
          EEPROM.update(u[2], u[3]);
          EEPROM.update(u[2] + 1, u[4]);
        }
        else if (u[1] == 0x03) { //启动、停止
          if (u[2] == 0x00) {
            tstep = 0;
            screw();
          }
          else if (u[2] == 0x01) {
            tstep = 6;
            tdelayc = 1;
            screw();
          }
        }
        else if (u[1] == 0x04) { //读取传感器数值
          height1 = 135 - analogRead(A0) * (70 / 1024);
          height2 = 135 - analogRead(A1) * (70 / 1024);
          sprintf(str, "height1.val=d%\xff\xff\xff", (int)(height1 * 100));
          TJC.print(str);
          sprintf(str, "height2.val=d%\xff\xff\xff", (int)(height2 * 100));
          TJC.print(str);
        }
      }
      else if (u[0] == 0x50) {//P核对密码
        int login = 0;
        byte e[4];
        for (int i = 0; i < 4; i++) {
          e[i] = EEPROM.read(i);
        }
        if (u[1] == 0x2D && u[2] == 0x2E && u[3] == 0x2E && u[4] == 0x2D) {
          login = 1;
        }
        if (e[0] == 255 && e[1] == 255 && e[2] == 255 && e[3] == 255) {
          login = 1;
        }
        if (e[0] == u[1] && e[1] == u[2] && e[2] == u[3] && e[3] == u[4]) {
          login = 1;
        }

        if (login == 1) {
          sprintf(str, "login.val=1\xff\xff\xff");//给HMI赋值登录成功
          TJC.print(str);
          sprintf(str, "\x74\x33\x2E\x74\x78\x74\x3D\x22\xB5\xC7\xC2\xBC\xB3\xC9\xB9\xA6\xA3\xAC\xBD\xE2\xCB\xF8\xB2\xCE\xCA\xFD\xC9\xE8\xD6\xC3\xD2\xB3\xC3\xE6\x22\xff\xff\xff");
          TJC.print(str);//t3.txt="登录成功，解锁参数设置页面"
        }
      }
      else if (u[0] == 0x53) {//S设置密码
        for (int i = 0; i < 4; i++) {
          EEPROM.update(i, u[i + 1]);
          delay(30);
        }
        sprintf(str, "t3.txt=\"\xC7\xEB\xC0\xCE\xBC\xC7\xD0\xC2\xC3\xDC\xC2\xEB ASIIC%d%d%d%d\"\xff\xff\xff", u[1], u[2], u[3], u[4]);
        TJC.print(str);
      }
    } else {
      TJC.read();  //从串口缓冲读取1个字节并删除
    }
  }
}