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Eth_ESP8266.cpp
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Eth_ESP8266.cpp
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/**
* @file Eth_ESP8266.cpp
*
* ESP8266 library
*
* @author Wu Pengfei (email:<[email protected]>)
* @date 2014/11/17
* @copyright
* Copyright (C) 2013-2014 ITEAD Intelligent Systems Co., Ltd. \n
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*/
#include "Eth_ESP8266.h"
#ifdef NET_USE_ESP8266
/*
* Start communication and reset ESP8266.
*/
void ESP8266::begin(void)
{
boolean result = false;
DebugSerial.println("Init ESP8266...");
ESP8266Serial.begin(ESP8266_BAUD_RATE);
ESP8266Serial.setTimeout(100);
ESP8266Serial.flush();
ESP8266Serial.println("AT");
if (ESP8266Serial.find("OK"))
{
DebugSerial.println("ESP8266 is ready");
}
else
{
delay(5000);
ESP8266Serial.flush();
ESP8266Serial.println("AT");
if (ESP8266Serial.find("OK"))
{
DebugSerial.println("ESP8266 is ready");
}
else
{
DebugSerial.println("No response from ESP8266");
DebugSerial.println("You need to reset your mainboard and ESP8266");
DebugSerial.println("Halt now ...");
while(1);
}
}
ESP8266Serial.setTimeout(ESP8266SERIAL_TIMEOUT_DEFAULT);
}
/*************************************************************************
//Initialize port
mode: setting operation mode
STA: Station
AP: Access Point
AT_STA: Access Point & Station
chl: channel number
ecn: encryption
ESP8266_ENC_OPEN 0
ESP8266_ENC_WEP 1
ESP8266_ENC_WAP_PSK 2
ESP8266_ENC_WAP2_PSK 3
ESP8266_ENC_WAP_WAP2_PSK 4
return:
true - successfully
false - unsuccessfully
***************************************************************************/
bool ESP8266::Initialize(byte mode, String ssid, String pwd, byte chl, byte ecn)
{
if (mode == STA)
{
DebugSerial.println("Set to station mode and reset... ");
bool b = confMode(mode);
if (!b)
{
return false;
}
delay(2000);
DebugSerial.print("Connecting to ");
DebugSerial.println(ssid);
return confJAP(ssid, pwd);
}
else if (mode == AP)
{
bool b = confMode(mode);
if (!b)
{
return false;
}
delay(2000);
confSAP(ssid, pwd, chl, ecn);
}
else if (mode == AP_STA)
{
bool b = confMode(mode);
if (!b)
{
return false;
}
delay(2000);
confJAP(ssid, pwd);
confSAP(ssid, pwd, chl, ecn);
}
return true;
}
/*************************************************************************
//Set up tcp or udp connection
type: tcp or udp
addr: ip address
port: port number
a: set multiple connection
0 for sigle connection
1 for multiple connection
id: id number(0-4)
return:
true - successfully
false - unsuccessfully
***************************************************************************/
boolean ESP8266::ipConfig(byte type, String addr, int32_t port, boolean a, byte id)
{
boolean result = false;
if (a == 0 )
{
confMux(a);
long timeStart = millis();
while (1)
{
long time0 = millis();
if (time0 - timeStart > 5000)
{
break;
}
}
result = newMux(type, addr, port);
}
else if (a == 1)
{
confMux(a);
long timeStart = millis();
while (1)
{
long time0 = millis();
if (time0 - timeStart > 5000)
{
break;
}
}
result = newMux(id, type, addr, port);
}
return result;
}
/*************************************************************************
//receive message from ESP8266
buf: buffer for receiving data
return: size of the buffer
***************************************************************************/
int32_t ESP8266::ReceiveMessage(char *buf)
{
//+IPD,<len>:<data>
//+IPD,<id>,<len>:<data>
String data = "";
if (ESP8266Serial.available()>0)
{
unsigned long start;
start = millis();
char c0 = ESP8266Serial.read();
if (c0 == '+')
{
while (millis()-start<5000)
{
if (ESP8266Serial.available()>0)
{
char c = ESP8266Serial.read();
data += c;
}
if (data.indexOf("\nOK")!=-1)
{
break;
}
}
int32_t sLen = strlen(data.c_str());
int32_t i,j;
for (i = 0; i <= sLen; i++)
{
if (data[i] == ':')
{
break;
}
}
boolean found = false;
for (j = 4; j <= i; j++)
{
if (data[j] == ',')
{
found = true;
break;
}
}
int32_t iSize;
//DBG(data);
//DBG("\r\n");
if(found ==true)
{
String _id = data.substring(4, j);
String _size = data.substring(j+1, i);
iSize = _size.toInt();
//DBG(_size);
String str = data.substring(i+1, i+1+iSize);
strcpy(buf, str.c_str());
//DBG(str);
}
else
{
String _size = data.substring(4, i);
iSize = _size.toInt();
//DBG(iSize);
//DBG("\r\n");
String str = data.substring(i+1, i+1+iSize);
strcpy(buf, str.c_str());
//DBG(str);
}
return iSize;
}
}
return 0;
}
//////////////////////////////////////////////////////////////////////////
/*********************************************
*********************************************
*********************************************
ESP8266 Function Commands
*********************************************
*********************************************
*********************************************
*/
/*************************************************************************
//inquire the current mode of ESP8266 module
return: string of current mode
Station
AP
AP+Station
***************************************************************************/
String ESP8266::showMode()
{
String data;
ESP8266Serial.println("AT+CWMODE?");
unsigned long start;
start = millis();
while (millis()-start<2000) {
if(ESP8266Serial.available()>0)
{
char a =ESP8266Serial.read();
data=data+a;
}
if (data.indexOf("OK")!=-1)
{
break;
}
}
if(data.indexOf("1")!=-1)
{
return "Station";
}else if(data.indexOf("2")!=-1)
{
return "AP";
}else if(data.indexOf("3")!=-1)
{
return "AP+Station";
}
}
/*************************************************************************
//configure the operation mode
a:
1 - Station
2 - AP
3 - AP+Station
return:
true - successfully
false - unsuccessfully
***************************************************************************/
bool ESP8266::confMode(byte a)
{
String data;
ESP8266Serial.print("AT+CWMODE=");
ESP8266Serial.println(String(a));
unsigned long start;
start = millis();
while (millis()-start<2000)
{
if(ESP8266Serial.available()>0)
{
char a =ESP8266Serial.read();
data=data+a;
}
if (data.indexOf("OK")!=-1 || data.indexOf("no change")!=-1)
{
return true;
}
if (data.indexOf("ERROR")!=-1 || data.indexOf("busy")!=-1)
{
return false;
}
}
}
/*************************************************************************
//show the list of ESP8266 hotspot
return: string of ESP8266 information
encryption,SSID,RSSI
***************************************************************************/
String ESP8266::showAP(void)
{
String data;
ESP8266Serial.flush();
ESP8266Serial.print("AT+CWLAP\r\n");
delay(1000);
while(1);
unsigned long start;
start = millis();
while (millis()-start<8000) {
if(ESP8266Serial.available()>0)
{
char a =ESP8266Serial.read();
data=data+a;
}
if (data.indexOf("OK")!=-1 || data.indexOf("ERROR")!=-1 )
{
break;
}
}
if(data.indexOf("ERROR")!=-1)
{
return "ERROR";
}
else{
char head[4] = {0x0D,0x0A};
char tail[7] = {0x0D,0x0A,0x0D,0x0A};
data.replace("AT+CWLAP","");
data.replace("OK","");
data.replace("+CWLAP","WIFI");
data.replace(tail,"");
data.replace(head,"");
return data;
}
}
/*************************************************************************
//show the name of current ESP8266 access port
return: string of access port name
AP:<SSID>
***************************************************************************/
String ESP8266::showJAP(void)
{
ESP8266Serial.flush();
ESP8266Serial.println("AT+CWJAP?");
String data;
unsigned long start;
start = millis();
while (millis()-start<3000) {
if(ESP8266Serial.available()>0)
{
char a =ESP8266Serial.read();
data=data+a;
}
if (data.indexOf("OK")!=-1 || data.indexOf("ERROR")!=-1 )
{
break;
}
}
char head[4] = {0x0D,0x0A};
char tail[7] = {0x0D,0x0A,0x0D,0x0A};
data.replace("AT+CWJAP?","");
data.replace("+CWJAP","AP");
data.replace("OK","");
data.replace(tail,"");
data.replace(head,"");
return data;
}
/*************************************************************************
//configure the SSID and password of the access port
return:
true - successfully
false - unsuccessfully
***************************************************************************/
boolean ESP8266::confJAP(String ssid , String pwd)
{
boolean join = false;
ESP8266Serial.flush();
ESP8266Serial.print("AT+CWJAP=");
ESP8266Serial.print("\""); //"ssid"
ESP8266Serial.print(ssid);
ESP8266Serial.print("\"");
ESP8266Serial.print(",");
ESP8266Serial.print("\""); //"pwd"
ESP8266Serial.print(pwd);
ESP8266Serial.println("\"");
unsigned long start;
start = millis();
while (millis()-start<10000)
{
if(ESP8266Serial.find("OK")==true)
{
join = true;
break;
}
}
if (join)
{
uint32_t n = 0;
while(n++ < 100)
{
ESP8266Serial.flush();
ESP8266Serial.println("AT+CIFSR");
String data = "";
char c;
start = millis();
while (millis()-start<3000)
{
while(ESP8266Serial.available()>0)
{
c = ESP8266Serial.read();
//DebugSerial.print(c);
data += c;
}
if (data.indexOf("0.0.0.0") == -1 &&
data.indexOf("OK") !=-1 )
{
return true;
}
}
delay(100);
}
}
return false;
}
/*************************************************************************
//quite the access port
return:
true - successfully
false - unsuccessfully
***************************************************************************/
boolean ESP8266::quitAP(void)
{
ESP8266Serial.println("AT+CWQAP");
unsigned long start;
start = millis();
while (millis()-start<3000) {
if(ESP8266Serial.find("OK")==true)
{
return true;
}
}
return false;
}
/*************************************************************************
//show the parameter of ssid, password, channel, encryption in AP mode
return:
mySAP:<SSID>,<password>,<channel>,<encryption>
***************************************************************************/
String ESP8266::showSAP()
{
ESP8266Serial.println("AT+CWSAP?");
String data;
unsigned long start;
start = millis();
while (millis()-start<3000) {
if(ESP8266Serial.available()>0)
{
char a =ESP8266Serial.read();
data=data+a;
}
if (data.indexOf("OK")!=-1 || data.indexOf("ERROR")!=-1 )
{
break;
}
}
char head[4] = {0x0D,0x0A};
char tail[7] = {0x0D,0x0A,0x0D,0x0A};
data.replace("AT+CWSAP?","");
data.replace("+CWSAP","mySAP");
data.replace("OK","");
data.replace(tail,"");
data.replace(head,"");
return data;
}
/*************************************************************************
//configure the parameter of ssid, password, channel, encryption in AP mode
return:
true - successfully
false - unsuccessfully
***************************************************************************/
boolean ESP8266::confSAP(String ssid , String pwd , byte chl , byte ecn)
{
ESP8266Serial.print("AT+CWSAP=");
ESP8266Serial.print("\""); //"ssid"
ESP8266Serial.print(ssid);
ESP8266Serial.print("\"");
ESP8266Serial.print(",");
ESP8266Serial.print("\""); //"pwd"
ESP8266Serial.print(pwd);
ESP8266Serial.print("\"");
ESP8266Serial.print(",");
ESP8266Serial.print(String(chl));
ESP8266Serial.print(",");
ESP8266Serial.println(String(ecn));
unsigned long start;
start = millis();
while (millis()-start<3000) {
if(ESP8266Serial.find("OK")==true )
{
return true;
}
}
return false;
}
/*********************************************
*********************************************
*********************************************
TPC/IP Function Command
*********************************************
*********************************************
*********************************************
*/
/*************************************************************************
//inquire the connection status
return: string of connection status
<ID> 0-4
<type> tcp or udp
<addr> ip
<port> port number
***************************************************************************/
String ESP8266::showStatus(void)
{
ESP8266Serial.println("AT+CIPSTATUS");
String data;
unsigned long start;
start = millis();
while (millis()-start<3000) {
if(ESP8266Serial.available()>0)
{
char a =ESP8266Serial.read();
data=data+a;
}
if (data.indexOf("OK")!=-1)
{
break;
}
}
char head[4] = {0x0D,0x0A};
char tail[7] = {0x0D,0x0A,0x0D,0x0A};
data.replace("AT+CIPSTATUS","");
data.replace("OK","");
data.replace(tail,"");
data.replace(head,"");
return data;
}
/*************************************************************************
//show the current connection mode(sigle or multiple)
return: string of connection mode
0 - sigle
1 - multiple
***************************************************************************/
String ESP8266::showMux(void)
{
String data;
ESP8266Serial.println("AT+CIPMUX?");
unsigned long start;
start = millis();
while (millis()-start<3000) {
if(ESP8266Serial.available()>0)
{
char a =ESP8266Serial.read();
data=data+a;
}
if (data.indexOf("OK")!=-1)
{
break;
}
}
char head[4] = {0x0D,0x0A};
char tail[7] = {0x0D,0x0A,0x0D,0x0A};
data.replace("AT+CIPMUX?","");
data.replace("+CIPMUX","showMux");
data.replace("OK","");
data.replace(tail,"");
data.replace(head,"");
return data;
}
/*************************************************************************
//configure the current connection mode(sigle or multiple)
a: connection mode
0 - sigle
1 - multiple
return:
true - successfully
false - unsuccessfully
***************************************************************************/
boolean ESP8266::confMux(boolean a)
{
ESP8266Serial.print("AT+CIPMUX=");
ESP8266Serial.println(a);
unsigned long start;
start = millis();
while (millis()-start<3000) {
if(ESP8266Serial.find("OK")==true )
{
return true;
}
}
return false;
}
/*************************************************************************
//Set up tcp or udp connection (signle connection mode)
type: tcp or udp
addr: ip address
port: port number
return:
true - successfully
false - unsuccessfully
***************************************************************************/
boolean ESP8266::newMux(byte type, String addr, int32_t port)
{
String data;
ESP8266Serial.print("AT+CIPSTART=");
if(type>0)
{
ESP8266Serial.print("\"TCP\"");
}
else
{
ESP8266Serial.print("\"UDP\"");
}
ESP8266Serial.print(",");
ESP8266Serial.print("\"");
ESP8266Serial.print(addr);
ESP8266Serial.print("\"");
ESP8266Serial.print(",");
ESP8266Serial.println(String(port));
unsigned long start;
start = millis();
char c;
while (millis()-start<3000)
{
while(ESP8266Serial.available()>0)
{
c = ESP8266Serial.read();
data = data + c;
}
if (data.indexOf("OK") != -1 ||
data.indexOf("ALREADY CONNECT") != -1)
{
return true;
}
}
return false;
}
/*************************************************************************
//Set up tcp or udp connection (multiple connection mode)
type: tcp or udp
addr: ip address
port: port number
id: id number(0-4)
return:
true - successfully
false - unsuccessfully
***************************************************************************/
boolean ESP8266::newMux( byte id, byte type, String addr, int32_t port)
{
ESP8266Serial.print("AT+CIPSTART=");
ESP8266Serial.print("\"");
ESP8266Serial.print(String(id));
ESP8266Serial.print("\"");
if(type>0)
{
ESP8266Serial.print("\"TCP\"");
}
else
{
ESP8266Serial.print("\"UDP\"");
}
ESP8266Serial.print(",");
ESP8266Serial.print("\"");
ESP8266Serial.print(addr);
ESP8266Serial.print("\"");
ESP8266Serial.print(",");
// ESP8266Serial.print("\"");
ESP8266Serial.println(String(port));
// ESP8266Serial.println("\"");
String data;
unsigned long start;
start = millis();
while (millis()-start<3000) {
if(ESP8266Serial.available()>0)
{
char a =ESP8266Serial.read();
data=data+a;
}
if (data.indexOf("OK")!=-1 || data.indexOf("ALREAY CONNECT")!=-1 )
{
return true;
}
}
return false;
}
/*************************************************************************
//send data in sigle connection mode
str: string of message
return:
true - successfully
false - unsuccessfully
***************************************************************************/
boolean ESP8266::Send(String str)
{
ESP8266Serial.print("AT+CIPSEND=");
// ESP8266Serial.print("\"");
ESP8266Serial.println(str.length());
// ESP8266Serial.println("\"");
unsigned long start;
start = millis();
bool found;
while (millis()-start<5000) {
if(ESP8266Serial.find(">")==true )
{
found = true;
break;
}
}
if(found)
ESP8266Serial.print(str);
else
{
closeMux();
return false;
}
String data;
start = millis();
while (millis()-start<5000) {
if(ESP8266Serial.available()>0)
{
char a =ESP8266Serial.read();
data=data+a;
}
if (data.indexOf("SEND OK")!=-1)
{
return true;
}
}
return false;
}
/*************************************************************************
//send data in multiple connection mode
id: <id>(0-4)
str: string of message
return:
true - successfully
false - unsuccessfully
***************************************************************************/
boolean ESP8266::Send(byte id, String str)
{
ESP8266Serial.print("AT+CIPSEND=");
ESP8266Serial.print(String(id));
ESP8266Serial.print(",");
ESP8266Serial.println(str.length());
unsigned long start;
start = millis();
bool found;
while (millis()-start<5000) {
if(ESP8266Serial.find(">")==true )
{
found = true;
break;
}
}
if(found)
ESP8266Serial.print(str);
else
{
closeMux(id);
return false;
}
String data;
start = millis();
while (millis()-start<5000) {
if(ESP8266Serial.available()>0)
{
char a =ESP8266Serial.read();
data=data+a;
}
if (data.indexOf("SEND OK")!=-1)
{
return true;
}
}
return false;
}
/*************************************************************************
//Close up tcp or udp connection (sigle connection mode)
***************************************************************************/
void ESP8266::closeMux(void)
{
ESP8266Serial.println("AT+CIPCLOSE");
String data;
unsigned long start;
start = millis();
while (millis()-start<3000) {
if(ESP8266Serial.available()>0)
{
char a =ESP8266Serial.read();
data=data+a;
}
if (data.indexOf("Linked")!=-1 || data.indexOf("ERROR")!=-1 || data.indexOf("we must restart")!=-1)
{
break;
}
}
}
/*************************************************************************
//Set up tcp or udp connection (multiple connection mode)
id: id number(0-4)
***************************************************************************/
void ESP8266::closeMux(byte id)
{
ESP8266Serial.print("AT+CIPCLOSE=");
ESP8266Serial.println(String(id));
String data;
unsigned long start;
start = millis();
while (millis()-start<3000) {
if(ESP8266Serial.available()>0)
{
char a =ESP8266Serial.read();
data=data+a;
}
if (data.indexOf("OK")!=-1 || data.indexOf("Link is not")!=-1 || data.indexOf("Cant close")!=-1)
{
break;
}
}
}
/*************************************************************************
//show the current ip address
return: string of ip address
***************************************************************************/
String ESP8266::showIP(void)
{
String data;
unsigned long start;
for(int32_t a=0; a<3;a++)
{
ESP8266Serial.println("AT+CIFSR");
start = millis();
while (millis()-start<3000) {