#include <ESP8266WiFi.h>

#define Dong1 D6
#define Dong2 D7
#define Zhuan1 D4
#define Zhuan2 D5
#define Echo D2
#define Trig D8

char* ssid = "126587"; //WiFi热点名称
char* passwd = "12345678"; //WiFi热点密码
int port = 8888;
WiFiServer server(port);//设置服务端口号

long getTime()
{ 
  digitalWrite(Trig, HIGH); //*******************
  delayMicroseconds(10);    //发送一个10微秒的脉冲
  digitalWrite(Trig, LOW); //************

  return pulseIn(Echo, HIGH); //波传输过程echo高电平，计算高电平时间就获取波传输的时间，单位是微秒
}

void initWifiSta()
{ 
  WiFi.mode(WIFI_STA);//设置STA模式
  WiFi.begin(ssid, passwd); //连接网络
  while (WiFi.status() != WL_CONNECTED) { 
    Serial.print(".");
    delay(500);
  }
  Serial.println(WiFi.localIP());//通过串口打印wemos的ip地址
}

void initChaoShengBo()
{ 
  pinMode(Echo, INPUT);
  pinMode(Trig, OUTPUT);

}

void initL9110s()
{ 
  pinMode(Dong1, OUTPUT);
  pinMode(Dong2, OUTPUT);
  pinMode(Zhuan1 , OUTPUT);
  pinMode(Zhuan2, OUTPUT);
}
void qian()
{ 
  digitalWrite(Dong1, HIGH);
  digitalWrite(Dong2, LOW);
}
void hou()
{ 
  digitalWrite(Dong1, LOW);
  digitalWrite(Dong2, HIGH);
}
void ting()
{ 
  digitalWrite(Dong1, LOW);
  digitalWrite(Dong2, LOW);
}

void zuo()
{ 
  digitalWrite(Zhuan1, HIGH);
  digitalWrite(Zhuan2, LOW);

} void you()
{ 
  digitalWrite(Zhuan1, LOW);
  digitalWrite(Zhuan2, HIGH);
}
void zheng()
{ 
  digitalWrite(Zhuan1, LOW);
  digitalWrite(Zhuan2, LOW);
}
void setup() { 
  // put your setup code here, to run once:
  initL9110s();
  initChaoShengBo();
  Serial.begin(115200);
  initWifiSta();
  server.begin();
}

void loop() { 
  // put your main code here, to run repeatedly:
  char cmd;
  long dis;
  int mark = 0;

  WiFiClient client = server.available();//服务器初始化
  while (client.connected()) {     //等待客户端接入
    while (client.available() > 0) { 
      cmd = client.read();
      Serial.println(cmd);
      dis = getTime() / 58;
      if (dis < 10) { 
        hou();
        delay(300);
        ting();
        mark = 1;
      } else { 
        mark = 0;
      }
      if (mark == 0) { 
        switch (cmd) { 
          case'q':
            qian();
            break;
          case'h':
            hou();
            break;
          case'z':
            zuo();
            break;
          case'y':
            you();
            break;
          case's':
            ting();
            break;
          case'p':
            zheng();
            break;
        }
      }
    }
  }
}