File content as of revision 3:b593f43b7251:

#include "mbed.h"
#include "RawSerial.h"

//setup the other wifi pins
DigitalOut rstPin (PTE29);
DigitalOut chpdPin (PTE23);


RawSerial esp (PTC4, PTC3, 115200); //setup a serial to the  (board) Tx = PTC4 and  Rx = PTC3 pins at baud rate 115200

Serial pc(USBTX, USBRX, 115200);

DigitalOut redLED(LED1); // twp leds
DigitalOut greenLED(LED2); // to allow visual check of bidirectional comms
DigitalOut blueLED(LED3);  //to prove it's working
char c;
char * buffer = (char *)malloc(128); //setup a buffer 128 characters long
char * nextBuff; // a pointer to the next character being added to the buffer

char input; //character to store inputs/outputs in communication
char* startCommands[10]= {
    "AT",
    "AT",
    "AT",
    "AT+RST",
    "AT+CWMODE=1",
    "AT+CWJAP=\"Hotspot\",\"password\"",   //name and password of wifi
    "AT+CIFSR",
    "AT+CIPMUX=1",
    "AT+CIPSERVER=1,8080",
    "AT+CIPSEND=0,"
};


int numberOfCommands;
int commandsExecuted;
int gotLine = 0; // boolean for whether we have a line


void start()
{
    pc.printf("Initialising start sequence\r\n");


    //numberOfCommands = sizeof(startCommands)/sizeof(startCommands[0]);
    numberOfCommands = 10;

    commandsExecuted = 0;
    esp.printf("%s\r\n",startCommands[commandsExecuted]);
    while (commandsExecuted < numberOfCommands) { //loop until we have executed all the commands
        if(gotLine) { // if esp signals that it's ready to receive a command, send the next command
            pc.printf("\r\ncommand %d",commandsExecuted);  //identify the command number
            pc.printf("\r\n");

            esp.printf("%s\r\n",startCommands[commandsExecuted]);    //send command
            commandsExecuted ++; //increment the counter
            gotLine = 0;
        }
    }
}

void reset()     //resets the module by turning rst off for 2 seconds then on again
{
    rstPin = 0;
    wait(2);
    rstPin = 1;
    pc.printf("Reset complete\r\n");

}
void esp_recv()
{
    char d;
    nextBuff = buffer; //make nextbuff point to beginning fo buffe

    while(esp.readable()) {
        d = esp.getc(); // get character sent by the esp

        pc.putc(d); // get character sent by the esp
        * nextBuff = d; //store in nextBuff
        nextBuff ++;
        if (d== '\n'  ) { // if our first two characters are return and newline, then we have reached the end of the line
            pc.putc('!');
            nextBuff = buffer; // what does this do????????????/
            gotLine = 1;
        }


    }
}
void pc_recv()
{
    char c;
    greenLED = !greenLED;
    while(pc.readable()) {
        c=pc.getc(); // get typed input


        if(c==13) { //send enter

            esp.putc(10); //send the command by pressing enter
            pc.putc(10); //ie makes enter perform as expected
        }

        else if(c=='y') { // send the startup sequence
            start();
        } else {
            esp.putc(c);
        }
    }
}

void initiateWifi()
{

    //initialise the pins
    rstPin = 1;
    chpdPin = 1;

    reset();    //perform an initial reset

    blueLED = 1; //turn on test light

    pc.attach(&pc_recv, Serial::RxIrq); // attach the two interrupt services
    esp.attach(&esp_recv, Serial::RxIrq);
    for (char i=10; i>0; i--) {
        pc.printf("%d\r\n", i);
        wait(1);
    }
    start();

}