Paul Staron / Mbed 2 deprecated ESP8266-configuaration-baudrate

ESP8266 set up for AT version 1.7.0

Dependencies:   mbed

Use this to set and test the ESP8266.

For ESP8266 firmware v1.7.0 and v1.7.1

restore.. resets the ESP8266 to factory settings with baud rate 115200 this is MBED-OS default setting.

config.. use this if you want to set ssid, password and mode in the ESP8266 flash.

setbaud.. set the ESP8266 baud rate that will stored in ESP8266 flash.

Most platforms will work up to 460800 baud, 921600 works on platforms with a MCU clock speed of 100MHz and above. MBED-OS built in ESP8266 driver only works up to 460800 at time of writing but is considerably faster than the default 115200 .

In most cases use 'restore' and 'setbaud' to reset the ESP8266 back to factory settings with your required baud rate.

main.cpp

Committer:
star297
Date:
2015-02-10
Revision:
3:14e33fec26c3
Parent:
2:c5515c7eba46
Child:
4:cd4543cf2f9c

File content as of revision 3:14e33fec26c3:

#include "mbed.h"

Serial pc(USBTX, USBRX);
Serial esp(PTE0, PTE1); // tx, rx 

Timer t;

int  count,ended,timeout;
char buf[1024];
char snd[255];

char ssid[32] = "ssid";     // enter router ssid inside the quotes
char pwd [32] = "password"; // enter router password inside the quotes

void SendCMD(),getreply(),ESPconfig(),ESPsetbaudrate();


int main() {
    
    pc.baud(115200);  // set what you want here depending on your terminal program speed
    esp.baud(9600);   // change this to the new ESP8266 baudrate if it is changed at any time.    
    
    //ESPsetbaudrate();   //******************  include this routine to set a different ESP8266 baudrate  ******************

    ESPconfig();        //******************  include Config to set the ESP8266 configuration  ***********************
    
   
   // contiuosly get AP list and IP
    while(1){
        pc.printf("\n---------- Listing Acces Points ----------\r\n");
        strcpy(snd, "AT+CWLAP\r\n");
        SendCMD();
        timeout=3;
        getreply();   
        pc.printf(buf);

        pc.printf("\n---------- Get IP's ----------\r\n"); 
        strcpy(snd, "AT+CIFSR\r\n");
        SendCMD();
        timeout=2;
        getreply(); 
        pc.printf(buf);
    }    
     
}

// Sets new ESP8266 baurate, change the esp.baud(xxxxx) to match your new setting once this has been executed
void ESPsetbaudrate()
{
    strcpy(snd, "AT+CIOBAUD=115200\r\n");   // change the numeric value to the required baudrate
    SendCMD();    
}    

//  +++++++++++++++++++++++++++++++++ This is for ESP8266 config only, run this once to set up the ESP8266 +++++++++++++++
void ESPconfig()
{

    pc.printf("---------- Starting ESP Config ----------\r\n\n");
    wait(2);
    pc.printf("---------- Reset & get Firmware ----------\r\n");
    strcpy(snd,"AT+RST\r\n");
    SendCMD();
    timeout=2;
    getreply();
    pc.printf(buf);
    
    wait(1);   
   
    pc.printf("\n---------- Get Version ----------\r\n");
    strcpy(snd,"AT+GMR\r\n");
    SendCMD();
    timeout=1;
    getreply();
    pc.printf(buf);    
    
    wait(1);
        
    // set CWMODE to 1=Station,2=AP,3=BOTH, default mode 1 (Station)
    pc.printf("\n---------- Setting Mode ----------\r\n");
    strcpy(snd, "AT+CWMODE=1\r\n");
    SendCMD();
    timeout=1;
    getreply();
    pc.printf(buf);
    
    wait(1);
    
    // set CIPMUX to 0=Single,1=Multi 
    pc.printf("\n---------- Setting Connection Mode ----------\r\n");
    strcpy(snd, "AT+CIPMUX=1\r\n"); 
    SendCMD();
    timeout=1;
    getreply();
    pc.printf(buf);
    
    wait(1);
    
    pc.printf("\n---------- Listing Acces Points ----------\r\n");
    strcpy(snd, "AT+CWLAP\r\n");
    SendCMD();
    timeout=3;
    getreply();   
    pc.printf(buf);
    
    wait(1);    
    
    pc.printf("\n---------- Connecting to AP ----------\r\n");
    pc.printf("ssid = %s   pwd = %s\r\n",ssid,pwd);
    strcpy(snd, "AT+CWJAP=\"");
    strcat(snd, ssid);
    strcat(snd, "\",\"");
    strcat(snd, pwd);
    strcat(snd, "\"\r\n");   
    SendCMD();
    timeout=8;
    getreply();    
    pc.printf(buf);
    
    wait(5);
    
    pc.printf("\n---------- Get IP's ----------\r\n"); 
    strcpy(snd, "AT+CIFSR\r\n");
    SendCMD();
    timeout=2;
    getreply(); 
    pc.printf(buf);
    
    wait(1);
    
    pc.printf("\n---------- Get Connection Status ----------\r\n"); 
    strcpy(snd, "AT+CIPSTATUS\r\n");
    SendCMD();
    timeout=2;
    getreply(); 
    pc.printf(buf);   
    
    pc.printf("\n\n\n  If you get a valid IP, ESP8266 has been set up.\r\n");
    pc.printf("  Run this if you want to reconfig the ESP8266 at any time.\r\n");
} 

void SendCMD()
{    
    esp.printf("%s", snd);    
} 

void getreply()
{    
    memset(buf, '\0', sizeof(buf));
    t.start();
    ended=0;count=0;
    while(!ended) {
        if(esp.readable()) {
            buf[count] = esp.getc();count++;
            }
        if(t.read() > timeout) {
                ended = 1;t.stop();t.reset();
            }
        }   
}