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ESP12E_ElectricFan.ino
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ESP12E_ElectricFan.ino
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/*
Electric Fan (NodeMCU ESP12E)
You must provide stable and large enough current for ESP or the fan will not work properly.
Author : ChungYi Fu (Kaohsiung, Taiwan) 2018-08-05 22:00
https://www.facebook.com/francefu
Servo -> D8 (GPIO15)
Motor Driver IC -> D1 (GPIO5), D2 (GPIO4)
Command Format :
http://APIP/?cmd=str1;str2;str3;str4;str5;str6;str7;str8;str9
http://STAIP/?cmd=str1;str2;str3;str4;str5;str6;str7;str8;str9
Default APIP:
http://192.168.4.1
STAIP：
http://192.168.4.1/?resetwifi=ssid;password
If you don't need to get response from ESP8266 and want to execute commands quickly,
you can append a parameter value "stop" at the end of command.
For example:
http://192.168.4.1/?digitalwrite=gpio;value;stop
http://192.168.4.1/?restart=stop
*/
#include <ESP8266WiFi.h>
// Enter your WiFi ssid and password
const char* ssid = ""; //your network SSID
const char* password = ""; //your network password
const char* apssid = "ElectricFan";
const char* appassword = "12345678"; //AP password require at least 8 characters.
WiFiServer server(80);
#include <Servo.h>
Servo myservo;
int servoPin=15; //Servo PIN -> D8 (GPIO15)
int motorPin1=5; //Motor Driver IC PIN1 -> D1 (GPIO5)
int motorPin2=4; //Motor Driver IC PIN2 -> D2 (GPIO4)
int angle=90; //Angle of Servo position (0~180)
int degree=5; //Degrees in angle of rotation
int rotateState=0; //Rotation 1=Start, 0=Stop
int rotationInterval=500; //Rotation interval (ms)
int speed=0; //Fan speeds (0~1023)
String Feedback="", Command="",cmd="",str1="",str2="",str3="",str4="",str5="",str6="",str7="",str8="",str9="";
byte ReceiveState=0,cmdState=1,strState=1,questionstate=0,equalstate=0,semicolonstate=0;
void setup()
{
Serial.begin(115200);
delay(10);
WiFi.mode(WIFI_AP_STA);
//WiFi.config(IPAddress(192, 168, 201, 100), IPAddress(192, 168, 201, 2), IPAddress(255, 255, 255, 0));
WiFi.begin(ssid, password);
delay(1000);
Serial.println("");
Serial.print("Connecting to ");
Serial.println(ssid);
long int StartTime=millis();
while (WiFi.status() != WL_CONNECTED)
{
delay(500);
if ((StartTime+5000) < millis()) break;
}
Serial.println("");
Serial.println("STAIP address: ");
Serial.println(WiFi.localIP());
if (WiFi.status() == WL_CONNECTED)
WiFi.softAP((WiFi.localIP().toString()+"_"+(String)apssid).c_str(), appassword);
else
WiFi.softAP(apssid, appassword);
//WiFi.softAPConfig(IPAddress(192, 168, 4, 1), IPAddress(192, 168, 4, 1), IPAddress(255, 255, 255, 0));
Serial.println("");
Serial.println("APIP address: ");
Serial.println(WiFi.softAPIP());
server.begin();
pinMode(motorPin1, OUTPUT);
pinMode(motorPin2, OUTPUT);
myservo.attach(servoPin);
myservo.write(angle);
}
void loop()
{
Command="";cmd="";str1="";str2="";str3="";str4="";str5="";str6="";str7="";str8="";str9="";
ReceiveState=0,cmdState=1,strState=1,questionstate=0,equalstate=0,semicolonstate=0;
WiFiClient client = server.available();
if (client)
{
String currentLine = "";
while (client.connected())
{
if (client.available())
{
char c = client.read();
getCommand(c);
if (c == '\n')
{
if (currentLine.length() == 0)
{
client.println("HTTP/1.1 200 OK");
client.println("Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept");
client.println("Access-Control-Allow-Methods: GET,POST,PUT,DELETE,OPTIONS");
client.println("Content-Type: text/html; charset=utf-8");
client.println("Access-Control-Allow-Origin: *");
//client.println("Connection: close");
client.println();
client.println("<!DOCTYPE HTML>");
client.println("<html><head>");
client.println("<meta charset=\"UTF-8\">");
client.println("<meta http-equiv=\"Access-Control-Allow-Origin\" content=\"*\">");
client.println("<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">");
client.println("</head><body><form>");
client.println("Fan Speeds (0 ~ 1023)<br/>");
client.println("<input type=\"range\" name=\"speed\" min=\"0\" max=\"1023\" step=\"20\" value=\""+String(speed)+"\" onchange=\"setspeed.value='Set '+speed.value;\">");
client.println("<input type=\"button\" onclick=\"location.href='?speed=0'\" value=\"Stop\">");
client.println("<input type=\"button\" name=\"setspeed\" onclick=\"location.href='?speed='+speed.value;\" value=\"Set "+String(speed)+"\">");
client.println("<br/><br/>");
client.println("Servo Rotation <br/>");
client.println("<input type=\"button\" onclick=\"location.href='?rotateState=1'\" value=\"Start\">");
client.println("<input type=\"button\" onclick=\"location.href='?rotateState=0'\" value=\"Stop\">");
client.println("<br/><br/>");
client.println("Angle Of Servo Position (0 ~ 180)<br/>");
client.println("<input type=\"range\" name=\"angle\" min=\"0\" max=\"180\" step=\"10\" value=\""+String(angle)+"\" onchange=\"setAngle.value='Set '+angle.value;\">");
client.println("<input type=\"button\" name=\"setAngle\" onclick=\"location.href='?angle='+angle.value;\" value=\"Set "+String(angle)+"\">");
client.println("<br/><br/>");
client.println("Servo Angle Degrees (-30 ~ +30)<br/>");
client.println("<input type=\"range\" name=\"degree\" min=\"-30\" max=\"30\" step=\"5\" value=\""+String(degree)+"\" onchange=\"setDegree.value='Set '+degree.value;\">");
client.println("<input type=\"button\" name=\"setDegree\" onclick=\"location.href='?degree='+degree.value;\" value=\"Set "+String(degree)+"\">");
client.println("<br/><br/>");
client.println("Servo Rotation Interval (ms)<br/>");
client.println("<input type=\"range\" name=\"rotationInterval\" min=\"100\" max=\"2000\" step=\"100\" value=\""+String(rotationInterval)+"\" onchange=\"setRotationInterval.value='Set '+rotationInterval.value;\">");
client.println("<input type=\"button\" name=\"setRotationInterval\" onclick=\"location.href='?rotationInterval='+rotationInterval.value;\" value=\"Set "+String(rotationInterval)+"\">");
client.println("<br/><br/>");
client.println(Feedback);
client.println("</form></body></html>");
client.println();
Feedback="";
break;
} else {
currentLine = "";
}
}
else if (c != '\r')
{
currentLine += c;
}
if ((currentLine.indexOf("/?")!=-1)&&(currentLine.indexOf(" HTTP")!=-1))
{
if (Command.indexOf("stop")!=-1) {
client.println();
client.println();
client.stop();
}
currentLine="";
Feedback="";
ExecuteCommand();
}
}
}
delay(1);
client.stop();
}
if (rotateState==1)
{
angle+=degree;
if ((angle<0)||(angle>180))
{
degree*=(-1);
angle+=degree*2;
}
myservo.write(angle);
delay(rotationInterval);
}
}
void ExecuteCommand()
{
Serial.println("");
Serial.println("Command: "+Command);
Serial.println("cmd= "+cmd+" ,str1= "+str1+" ,str2= "+str2+" ,str3= "+str3+" ,str4= "+str4+" ,str5= "+str5+" ,str6= "+str6+" ,str7= "+str7+" ,str8= "+str8+" ,str9= "+str9);
Serial.println("");
if (cmd=="rotateState")
{
rotateState=str1.toInt();
Feedback="rotateState is changed to "+str1;
}
else if (cmd=="speed")
{
speed=str1.toInt();
analogWrite(motorPin1,0);
analogWrite(motorPin2,speed);
Feedback="speed is changed to "+str1;
}
else if (cmd=="angle")
{
rotateState=0;
angle=str1.toInt();
myservo.write(angle);
Feedback="angle is changed to "+str1;
}
else if (cmd=="degree")
{
degree=str1.toInt();
Feedback="degree is changed to "+str1;
}
else if (cmd=="rotationInterval")
{
rotationInterval=str1.toInt();
Feedback="rotationInterval is changed to "+str1;
}
else if (cmd=="resetwifi")
{
WiFi.begin(str1.c_str(), str2.c_str());
Serial.print("Connecting to ");
Serial.println(str1);
long int StartTime=millis();
while (WiFi.status() != WL_CONNECTED)
{
delay(500);
if ((StartTime+5000) < millis()) break;
}
Serial.println("");
Serial.println("STAIP: "+WiFi.localIP().toString());
Feedback="STAIP: "+WiFi.localIP().toString();
}
else
{
Feedback="Command is not defined";
}
}
void getCommand(char c)
{
if (c=='?') ReceiveState=1;
if ((c==' ')||(c=='\r')||(c=='\n')) ReceiveState=0;
if (ReceiveState==1)
{
Command=Command+String(c);
if (c=='=') cmdState=0;
if (c==';') strState++;
if ((cmdState==1)&&((c!='?')||(questionstate==1))) cmd=cmd+String(c);
if ((cmdState==0)&&(strState==1)&&((c!='=')||(equalstate==1))) str1=str1+String(c);
if ((cmdState==0)&&(strState==2)&&(c!=';')) str2=str2+String(c);
if ((cmdState==0)&&(strState==3)&&(c!=';')) str3=str3+String(c);
if ((cmdState==0)&&(strState==4)&&(c!=';')) str4=str4+String(c);
if ((cmdState==0)&&(strState==5)&&(c!=';')) str5=str5+String(c);
if ((cmdState==0)&&(strState==6)&&(c!=';')) str6=str6+String(c);
if ((cmdState==0)&&(strState==7)&&(c!=';')) str7=str7+String(c);
if ((cmdState==0)&&(strState==8)&&(c!=';')) str8=str8+String(c);
if ((cmdState==0)&&(strState>=9)&&((c!=';')||(semicolonstate==1))) str9=str9+String(c);
if (c=='?') questionstate=1;
if (c=='=') equalstate=1;
if ((strState>=9)&&(c==';')) semicolonstate=1;
}
}