arduino+esp8266+relay

arduino.ino

boolean wifiReady = 0;
boolean wifiConnected = 0;

void setup() {
    pinMode(10,OUTPUT);
    pinMode(13,OUTPUT);
    digitalWrite(10,LOW);
    digitalWrite(13,LOW);
    
    Serial.begin(115200);
    Serial.setTimeout(2000);
    
    while (!wifiReady) {
        wifiReset();
        delay(1000);
    }
    
    while (!wifiConnected) {
        digitalWrite(13,LOW);
        wifiConnect();
        delay(1000);
    }
    
   
    setupTCPservice();
    delay(1000);
}
void loop() {
    if(wifiConnected){
        char recvBuf[128];
        
        //bzero(recvBuf,128);
        for( int i = 0; i < sizeof(recvBuf);  ++i )
            recvBuf[i] = (char)0;
        Serial.flush();
        Serial.readBytesUntil('\n',recvBuf,128);
        switch (recvBuf[0]){
            case 'r':
            case 'l':
            case 'u':
            case 'O':
                    // probably initial ready,link,unlink,OK
                    break;
            case '+':
                    // probably +IPD, which is what we want
                    decodeIPD(recvBuf);
                    break;
            default:
                    break;
        }
    }
}
void wifiReset(){
  Serial.setTimeout(5000);  
  Serial.print("AT+RST\r\n"); // Reset the ESP8266
  delay(1000);
  if(Serial.find("ready")){
    wifiReady = 1;
  }else{
    wifiReady = 0;
  }
}
void wifiConnect(){
    Serial.print("AT+CWMODE=3\r\n");
    Serial.find("OK");
    delay(1000);
    Serial.print("AT+CWJAP=\"KIKA\",\"sz123456\"\r\n");
    delay(1000);
    if(Serial.find("OK")){
        wifiConnected = 1;
        digitalWrite(13,HIGH);
    } else {
        wifiConnected = 0;
        digitalWrite(13,LOW);
    }
}
void setupTCPservice(){
    Serial.print("AT+CIPMUX=1\r\n");
    delay(1000);
    Serial.print("AT+CIPSERVER=1,8023\r\n");
    delay(1000);
}
void decodeIPD(char *recvBuf){
    int ch,len;
    unsigned char cmd[128];
    
    //bzero(cmd,128);
    for( int i = 0; i < sizeof(cmd);  ++i )
        cmd[i] = (char)0;
    
    sscanf(&recvBuf[5],"%d,%d:%s", &ch ,&len, cmd);
    
    if(len > 128)
        len=128;
     cmd[len] = 0;
    
        switch (cmd[0]){
            case 'P':
                digitalWrite(10,HIGH);
                break;
            case 'G':
                digitalWrite(10,LOW);
                break;
            default:
                break;
        }
}