Arduino WiFi Lamp Controller

WiFiLampController.ino

#include <SerialESP8266wifi.h>

#define PIN_WIFI_RESET 8
#define PIN_RELAY_SIGNAL 9

SerialESP8266wifi wifi(Serial1, Serial1, PIN_WIFI_RESET, Serial);

char vBuff[64] = "";

String ipAddress = "0.0.0.0";

void handleWiFiIncoming() {
  while (Serial1.available()) {
    char inByte = Serial1.read();
    Serial.write(inByte);
  }
}
void handleSerialComms() {
  while (Serial1.available()) {
    char inByte = Serial1.read();
    Serial.write(inByte);
  }
  while (Serial.available()) {
    int inByte = Serial.read();
    Serial1.write(inByte);
  }
}

void sendCmd(String s) {
  Serial1.println(s);
  Serial1.flush();
  Serial.println("Executing [" + s + "]");
}

void sendCmdExpect(String s, String x) {
  sendCmd(s);
  if (Serial1.find(const_cast<char*>(x.c_str())), "link is not valid", "ERROR") {
    Serial.println("Successfully executed [" + s + "]");
  } else {
    Serial.println("Timeout executing [" + s + "]");
  }
  handleSerialComms();
}

void setup() {
  pinMode(PIN_WIFI_RESET, OUTPUT);
  digitalWrite(PIN_WIFI_RESET, HIGH);

  pinMode(PIN_RELAY_SIGNAL, OUTPUT);
  digitalWrite(PIN_RELAY_SIGNAL, LOW);

  Serial.begin(115200);
  Serial.println("Booting up...");

  Serial1.setTimeout(5000);
  Serial1.begin(115200);

  if (!wifi.begin()) {
    Serial.println("\n\nWiFi module could not be set up.");
  } else {
    Serial.println("\n\nWiFi Module succesfully set up.");
  }

  if (wifi.connectToAP("AFRODITA", "A38sJjf3X7ByyFJ3")) {
    Serial.println("\n\nWiFi was connected successfully.");
  } else {
    Serial.println("\n\nError connecting to WiFi.");
  }

  strcpy(vBuff, wifi.getIP());
  ipAddress = String(vBuff);

  Serial.println("\n\nWiFi IP: " + String(ipAddress));

  wifi.startLocalServer("80");

  Serial.println("\n\nWiFi connection completed.");
  handleSerialComms();
}

void changeLampStatus(bool lampState) {
  if (lampState) {
    digitalWrite(PIN_RELAY_SIGNAL, HIGH);
  } else {
    digitalWrite(PIN_RELAY_SIGNAL, LOW);
  }
}

String inMessage = "";

void processMessage() {
  Serial.println("========================");
  Serial.println(inMessage);
  Serial.println("------------------------");
  String respMessage="none";
  String respStatus="unknown";
  if (inMessage.startsWith("+IPD")) {
    String connID = inMessage.substring(5,6);
    String cmdLine = inMessage.substring(0, inMessage.indexOf("\x0D\x0A"));
    String cmdString = cmdLine.substring(inMessage.indexOf(":")+1, cmdLine.lastIndexOf(" "));
    Serial.println("ConnID: "+connID);
    Serial.println("CmdLine: "+cmdLine);
    Serial.println("CmdString: "+cmdString);
    if (cmdString == "GET /lamp/on") {
        Serial.println("Turning lamp on.");
        respMessage="lamp turned on";
        respStatus="ok";
        changeLampStatus(true);
    } else if (cmdString == "GET /lamp/off") {
        Serial.println("Turning lamp off.");
        respMessage="lamp turned off";
        respStatus="ok";
        changeLampStatus(false);
    } else {
        Serial.println("Unknown command.");
        respMessage="unknown action";
        respStatus="error";
    }
    String doneMessage="HTTP/1.1 200 OK\nContent-Type: application/json\n\n{\"status\":\""+respStatus+"\", \"message\":\""+respMessage+"\"}";
    sendCmd("AT+CIPSEND="+connID+","+String(doneMessage.length()));
    handleWiFiIncoming();
    Serial.println();
    sendCmdExpect(doneMessage, "SEND OK");
    sendCmdExpect("AT+CIPCLOSE="+connID, "OK");
  }
}

void loop() {
  while (Serial1.available()) {
    char inByte = Serial1.read();
    inMessage += inByte;
    if (inByte == '\x0A' or inByte == '\x0D') {
      if (inMessage.endsWith("\x0D\x0A\x0D\x0A")) {
        processMessage();
        inMessage = "";
      }
    }
  }
}