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ESP01_UNO_MyFirmata.ino
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/*
ESP-01 + Arduino Uno (AT Command)
Author : ChungYi Fu (Kaohsiung, Taiwan) 2018-08-27 22:30
Update AT Firmware(V2.0_AT_Firmware)
https://www.youtube.com/watch?v=QVhWVu8NnZc
http://www.electrodragon.com/w/File:V2.0_AT_Firmware(ESP).zip
nodemcu-flasher
https://github.com/nodemcu/nodemcu-flasher
(Baudrate:115200, Flash size:1MByte, Flash speed:26.7MHz, SPI Mode:QIO)
Expanding Arduino Serial Port Buffer Size
https://internetofhomethings.com/homethings/?p=927
https://www.facebook.com/francefu/videos/10211231615856099/
Control Page (http)
https://github.com/fustyles/Arduino/blob/master/ESP8266_MyFirmata.html
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： 192.168.4.1
http://192.168.4.1/?ip
http://192.168.4.1/?mac
http://192.168.4.1/?restart
http://192.168.4.1/?resetwifi=ssid;password
http://192.168.4.1/?at=AT+Command
http://192.168.4.1/?tcp=domain;port;request
http://192.168.4.1/?inputpullup=pin
http://192.168.4.1/?pinmode=pin;value
http://192.168.4.1/?digitalwrite=pin;value
http://192.168.4.1/?analogwrite=pin;value
http://192.168.4.1/?digitalread=pin
http://192.168.4.1/?analogread=pin
STAIP：
Query： http://192.168.4.1/?ip
Link：http://192.168.4.1/?resetwifi=ssid;password
*/
// Enter your WiFi ssid and password
String WIFI_SSID = ""; //your network SSID
String WIFI_PWD = ""; //your network password
String AP_SSID = "MyFirmata ESP01";
String AP_PWD = "12345678"; //AP password require at least 8 characters.
#include <SoftwareSerial.h>
SoftwareSerial mySerial(10, 11); // ESP01 TX->D10, RX->D11
String ReceiveData="", command="",cmd="",str1="",str2="",str3="",str4="",str5="",str6="",str7="",str8="",str9="";
String APIP="",APMAC="",STAIP="",STAMAC="",CID="";
boolean debug = false;
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);
//If you want to execute command quickly, please don't execute "Feedback"!
if (cmd=="yourcmd")
{
//you can do anything
//if (debug == true) Feedback(CID,"<font color=\"red\">"+cmd+"="+str1+";"+str2+";"+str3+"</font>",0); --> HTML
//if (debug == true) Feedback(CID,cmd+"="+str1+";"+str2+";"+str3,1); --> XML
//if (debug == true) Feedback(CID,cmd+"="+str1+";"+str2+";"+str3,2); --> JSON
//if (debug == true) Feedback(CID,"<html>"+cmd+"="+str1+";"+str2+";"+str3+"</html>",3); --> Custom definition
}
else if (cmd=="ip")
{
Feedback(CID,"<html>APIP: "+APIP+"<br>STAIP: "+STAIP+"</html>",3);
}
else if (cmd=="mac")
{
Feedback(CID,"<html>APMAC: "+APMAC+"<br>STAMAC: "+STAMAC+"</html>",3);
}
else if (cmd=="resetwifi")
{
if (debug == true) Feedback(CID,"<html>"+str1+","+str2+"</html>",3);
if (debug == false) SendData("AT+CIPCLOSE="+CID,0);
delay(3000);
SendData("AT+CWQAP",2000);
SendData("AT+CWJAP_CUR=\""+str1+"\",\""+str2+"\"",5000);
}
else if (cmd=="restart")
{
if (debug == true) Feedback(CID,"<html>"+command+"</html>",3);
if (debug == false) SendData("AT+CIPCLOSE="+CID,0);
delay(3000);
SendData("AT+RST",2000);
delay(2000);
setup();
initial();
}
else if (cmd=="at") // ?cmd=str1 -> ?at=AT+RST
{
if (debug == true) Feedback(CID,"<html>"+WaitReply(3000)+"</html>",3);
if (debug == false) SendData("AT+CIPCLOSE="+CID,0);
delay(1000);
mySerial.println(str1);
mySerial.flush();
}
else if (cmd=="tcp")
{
if (debug == true) Feedback(CID,"<html>"+command+"</html>",3);
delay(1000);
String Domain=str1;
/*
If request length is too long, it can't work!
Expanding Arduino Serial Port Buffer Size
https://internetofhomethings.com/homethings/?p=927
If you change buffer size to 256 bytes, request length must be less than or equal to 128.
*/
String request = "GET /"+str3+" HTTP/1.1\r\nHost: "+Domain+"\r\n\r\n";
SendData("AT+CIPSTART=4,\"TCP\",\""+Domain+"\","+str2, 4000);
SendData("AT+CIPSEND=4," + String(request.length()+2), 4000);
SendData(request, 2000);
delay(1);
SendData("AT+CIPCLOSE=4",2000);
}
else if (cmd=="inputpullup")
{
pinMode(str1.toInt(), INPUT_PULLUP);
if (debug == true) Feedback(CID,"<html>"+command+"</html>",3);
if (debug == false) SendData("AT+CIPCLOSE="+CID,0);
}
else if (cmd=="pinmode")
{
pinMode(str1.toInt(), str2.toInt());
if (debug == true) Feedback(CID,"<html>"+command+"</html>",3);
if (debug == false) SendData("AT+CIPCLOSE="+CID,0);
}
else if (cmd=="digitalwrite")
{
pinMode(str1.toInt(), OUTPUT);
digitalWrite(str1.toInt(),str2.toInt());
if (debug == true) Feedback(CID,"<html>"+command+"</html>",3);
if (debug == false) SendData("AT+CIPCLOSE="+CID,0);
}
else if (cmd=="digitalread")
{
Feedback(CID,"<html>"+String(digitalRead(str1.toInt()))+"</html>",3);
}
else if (cmd=="analogwrite")
{
pinMode(str1.toInt(), OUTPUT);
analogWrite(str1.toInt(),str2.toInt());
if (debug == true) Feedback(CID,"<html>"+command+"</html>",3);
if (debug == false) SendData("AT+CIPCLOSE="+CID,0);
}
else if (cmd=="analogread")
{
Feedback(CID,"<html>"+String(analogRead(str1.toInt()))+"</html>",3);
}
else
{
Feedback(CID,"<html>Command is not defined</html>",3);
}
}
void setup()
{
Serial.begin(9600);
//You must change uart baud rate of ESP-01 to 9600.
mySerial.begin(115200); //Default uart baud rate -> 19200,38400,57600,74880,115200
SendData("AT+UART_CUR=9600,8,1,0,0",2000); //Change uart baud rate of ESP-01 to 9600
mySerial.begin(9600); // 9600 ,you will get more stable data without junk chars.
mySerial.setTimeout(10);
initial();
}
void initial()
{
SendData("AT+CWMODE_CUR=3",2000);
SendData("AT+CIPMUX=1",2000);
SendData("AT+CIPSERVER=1,80",2000); //port=80
SendData("AT+CIPSTO=5",2000); //timeout= 5 seconds
SendData("AT+CIPAP_CUR=\"192.168.4.1\"",2000); //APIP: 192.168.4.1
SendData("AT+CWSAP_CUR=\""+AP_SSID+"\",\""+AP_PWD+"\",3,4",2000);
//String STA_ip="192.168.0.100";
//String STA_gateway="192.168.0.1";
//String STA_netmask="255.255.255.0";
//SendData("AT+CIPSTA_CUR=\""+STA_ip+"\",\""+STA_gateway+"\",\""+STA_netmask+"\"",2000);
if (WIFI_SSID!="")
SendData("AT+CWJAP_CUR=\""+WIFI_SSID+"\",\""+WIFI_PWD+"\"",5000);
else
Serial.print("Please check your network SSID and password settings");
}
void loop()
{
getCommand();
if ((ReceiveData.indexOf("/?")!=-1)&&(ReceiveData.indexOf(" HTTP")!=-1))
{
CID=String(ReceiveData.charAt(ReceiveData.indexOf("+IPD,")+5));
executecommand();
}
else if ((ReceiveData.indexOf("/?")!=-1)&&(ReceiveData.indexOf(" HTTP")==-1))
{
if(ReceiveData.indexOf("+IPD,")!=-1)
{
CID=String(ReceiveData.charAt(ReceiveData.indexOf("+IPD,")+5));
Feedback(CID,"<html>It can't work!Check command length.</html>",3);
}
}
else if ((ReceiveData.indexOf("/?")==-1)&&(ReceiveData.indexOf(" HTTP")!=-1))
{
CID=String(ReceiveData.charAt(ReceiveData.indexOf("+IPD,")+5));
Feedback(CID,"<html>Hello World</html>",3);
}
/*
if (SensorValue>LimitValue)
{
cmd="yourcmd";
str1="yourstr1";
str2="yourstr2";
str3="yourstr3";
...
str9="yourstr9";
ExecuteCommand();
delay(10000);
}
*/
}
void SendData(String data,int TimeLimit)
{
mySerial.println(data);
mySerial.flush();
delay(10);
WaitReply(TimeLimit);
}
void Feedback(String CID,String Response,int datatype)
{
/*
If response length is too long, it can't work!
If you change buffer size to 256 bytes, response length must be less than or equal to 128.
*/
if (datatype==0)
{
Response="<!DOCTYPE HTML><html><head><meta charset=\"UTF-8\"></head><body>"+Response+"</body></html>";
}
else if (datatype==1)
{
Response="<?xml version=\"1.0\" encoding=\"UTF-8\"?><ESP8266><Data><Text>"+Response+"</Text></Data></ESP8266>";
}
else if (datatype==2)
{
Response="[{\"ESP8266\":\""+Response+"\"}]";
}
else
Response=Response;
SendData("AT+CIPSEND="+CID+","+(Response.length()+2),2000);
SendData(Response,2000);
delay(1);
SendData("AT+CIPCLOSE="+CID,2000);
}
String WaitReply(long int TimeLimit)
{
String ReceiveData="";
long int StartTime=millis();
while( (StartTime+TimeLimit) > millis())
{
if (mySerial.available())
{
delay(4);
while(mySerial.available())
{
ReceiveData=ReceiveData+String(char(mySerial.read()));
}
//Serial.println(ReceiveData);
if (ReceiveData.indexOf("OK")!=-1) return ReceiveData;
}
}
return ReceiveData;
}
void getCommand()
{
ReceiveData="";command="";cmd="";str1="";str2="";str3="";str4="";str5="";str6="";str7="";str8="";str9="";
byte ReceiveState=0,cmdState=1,strState=1,questionstate=0,equalstate=0,semicolonstate=0;
if (mySerial.available())
{
while (mySerial.available())
{
char c=mySerial.read();
ReceiveData=ReceiveData+String(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;
}
if (ReceiveData.indexOf(" HTTP")!=-1)
{
while (mySerial.available())
{
mySerial.read();
}
}
}
Serial.println(ReceiveData);
if (ReceiveData.indexOf("WIFI GOT IP")!=-1)
{
while(!mySerial.find('OK')){}
delay(10);
APIP="";APMAC="";STAIP="";STAMAC="";
int apipreadstate=0,staipreadstate=0,apmacreadstate=0,stamacreadstate=0,j=0;
mySerial.println("AT+CIFSR");
mySerial.flush();
delay(6);
while(mySerial.available())
{
char c=mySerial.read();
String t=String(c);
if (t=="\"") j++;
if (j==1)
apipreadstate=1;
else if (j==2)
apipreadstate=0;
if ((apipreadstate==1)&&(t!="\"")) APIP=APIP+t;
if (j==3)
apmacreadstate=1;
else if (j==4)
apmacreadstate=0;
if ((apmacreadstate==1)&&(t!="\"")) APMAC=APMAC+t;
if (j==5)
staipreadstate=1;
else if (j==6)
staipreadstate=0;
if ((staipreadstate==1)&&(t!="\"")) STAIP=STAIP+t;
if (j==7)
stamacreadstate=1;
else if (j==8)
stamacreadstate=0;
if ((stamacreadstate==1)&&(t!="\"")) STAMAC=STAMAC+t;
}
pinMode(13,1);
for (int i=0;i<20;i++)
{
digitalWrite(13,1);
delay(50);
digitalWrite(13,0);
delay(50);
}
Serial.println("APIP: "+APIP+"\nAPMAC: "+APMAC+"\nSTAIP: "+STAIP+"\nSTAMAC: "+STAMAC);
}
}
}