Antonio Quevedo / ESP8266

Library for using the Wifi module ESP8266, first version with basic commands, soon new commands will be added

Dependents:   PIR_Sensor_wifi myESP8266forLOstFound Motin_Activated_Temperature_Humidity_BluetoothHC-06_ESP8266_IOT 1Project3_Robot1_Final ... more

Library updated in Dec 28, 2014. Now the ESP baudrate is passed as a parameter in the constructor. Also, some new functions were added. Here is an example code:

ESP8266 example code

#include "mbed.h"
#include <string>
#include "ESP8266.h"

// Objects
Serial pc(USBTX, USBRX);
ESP8266 esp(PTE0, PTE1, 115200);

// Global variables
char snd[255], rcv[1000]; // Strings for sending and receiving commands / data / replies

int main() {
    pc.baud(115200);
    pc.printf("START\r\n");
    wait(3);
    
    pc.printf("Reset ESP\r\n");
    esp.Reset();
    esp.RcvReply(rcv, 400);
    pc.printf("%s", rcv);
    wait(2);
    pc.printf("Sending AT\r\n");
    strcpy(snd, "AT");
    esp.SendCMD(snd);
    esp.RcvReply(rcv, 400);
    pc.printf("%s", rcv);
    wait(2);
    pc.printf("Set mode to AP\r\n");
    esp.SetMode(1);
    esp.RcvReply(rcv, 1000);
    pc.printf("%s", rcv);
    
    pc.printf("Receiving Wifi List\r\n");
    esp.GetList(rcv);
    pc.printf("%s", rcv);
    
    pc.printf("Connecting to AP\r\n");
    esp.Join("MyAP", "MyPasswd"); // Replace MyAP and MyPasswd with your SSID and password
    esp.RcvReply(rcv, 1000);
    pc.printf("%s", rcv);
    wait(8);
    pc.printf("Getting IP\r\n");
    esp.GetIP(rcv);
    pc.printf("%s", rcv);
    pc.printf("Setting multiple connections\r\n");
    esp.SetMultiple();
    esp.RcvReply(rcv, 1000);
    pc.printf("%s", rcv);
    pc.printf("Getting Connection Status\r\n");
    esp.GetConnStatus(rcv);
    pc.printf("%s", rcv);
    pc.printf("Start server mode on port 80\r\n");
    esp.StartServerMode(80);
    esp.RcvReply(rcv, 1000);
    pc.printf("%s", rcv);
    wait(4);
    pc.printf("Close server mode\r\n");
    esp.CloseServerMode();
    esp.RcvReply(rcv, 1000);
    pc.printf("THE END");
    while(1);
}

Diff: ESP8266.h

Revision:
0:e58f27687450
Child:
1:399414d48048
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ESP8266.h	Tue Dec 16 01:08:47 2014 +0000
@@ -0,0 +1,58 @@
+#ifndef ESP8266_H
+#define ESP8266_H
+
+#include <string>
+#include "mbed.h"
+
+class ESP8266
+{
+public:
+/**
+  * ESP8266 constructor
+  *
+  * @param tx TX pin
+  * @param rx RX pin
+  */
+  ESP8266(PinName tx, PinName rx);
+
+  /**
+  * ESP8266 destructor
+  */
+  ~ESP8266();
+
+void SendCMD(char * s);
+void Reset(void);
+void RcvReply(char * r, int to);
+void GetList(char * l);
+void Join(char * id, char * pwd);
+void GetIP(char * ip);
+
+private:
+Serial comm;
+void AddEOL(char * s);
+void AddChar(char * s, char c);
+
+};
+  
+#endif
+/*
+    COMMAND TABLE
+    Basic:
+    AT: Just to generate "OK" reply
+    Wifi:
+    AT+RST:  restart the module
+    AT+CWMODE: define wifi mode; AT+CWMODE=<mode> 1= Sta, 2= AP, 3=both; Inquiry: AT+CWMODE? or AT+CWMODE=?
+    AT+CWJAP: join the AP wifi; AT+ CWJAP =<ssid>,< pwd > - ssid = ssid, pwd = wifi password, both between quotes; Inquiry: AT+ CWJAP?
+    AT+CWLAP: list the AP wifi
+    AT+CWQAP: quit the AP wifi; Inquiry: AT+CWQAP=?  
+    AT+CWSAP: set the parameters of AP; AT+CWSAP= <ssid>,<pwd>,<chl>,<ecn> - ssid, pwd, chl = channel, ecn = encryption; Inquiry: AT+CWJAP?
+    TCP/IP:
+    AT+CIPSTATUS: get the connection status
+    AT+CIPSTART: set up TCP or UDP connection 1)single connection (+CIPMUX=0) AT+CIPSTART= <type>,<addr>,<port>; 2) multiple connection (+CIPMUX=1) AT+CIPSTART= <id><type>,<addr>, <port> - id = 0-4, type = TCP/UDP, addr = IP address, port= port; Inquiry: AT+CIPSTART=?
+    AT+CIPSEND: send data; 1)single connection(+CIPMUX=0) AT+CIPSEND=<length>; 2) multiple connection (+CIPMUX=1) AT+CIPSEND= <id>,<length>; Inquiry: AT+CIPSEND=?
+    AT+CIPCLOSE: close TCP or UDP connection; AT+CIPCLOSE=<id> or AT+CIPCLOSE; Inquiry: AT+CIPCLOSE=?
+    AT+CIFSR: Get IP address; Inquiry: AT+ CIFSR=?
+    AT+CIPMUX:  set mutiple connection; AT+ CIPMUX=<mode> - 0 for single connection 1 for mutiple connection; Inquiry: AT+CIPMUX?
+    AT+CIPSERVER: set as server; AT+ CIPSERVER= <mode>[,<port> ] - mode 0 to close server mode, mode 1 to open; port = port; Inquiry: AT+CIFSR=?
+    +IPD: received data
+*/
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