File content as of revision 0:4676a90107ca:

//programa para enviar cadenas de caracters y probarlas con app inventor
//el programa tambien recibe cadenas

#include "mbed.h"
#include "DebouncedIn.h"
#include "stdio.h"
#include "string.h"
Timer t;
DigitalOut LedVerde(LED2);
DigitalOut LedRojo(LED1);
DigitalOut LedAzul(LED3);
DebouncedIn button1(PTC12);  
DebouncedIn button2(PTC13); 
DebouncedIn button3(PTC16); 
Serial GSM(PTE0,PTE1);  //puertos del FRDM para el modem
Serial pc(USBTX,USBRX);
void Rx_interrupt();
int position=0;
int lenpack=6;
int longi=0;
char tel[10];
char DE[50];
char buffer[512];
char buffermsg[100];
char buffer1[13];
char mensaje[100];
char NUMBER[13];    
short int index1;
short int index2;
short int index3;
int count;
int i = 0;
int c=0;
int cont=0;
unsigned char CtrlZ = 0x1A; 
bool Flag = false; 
char r[]=""; 
char msg[256];
char char1;
void FlushGSM(void) { 
char1 = 0;
 while (GSM.readable()){
     char1 = GSM.getc();}
     return;}

void callback() {
   
    pc.printf("%c\n", GSM.getc());
    
}
 
int readBuffer(char *buffer,int count)
{
    int i=0; 
    t.start(); 
    while(1) {
        while (GSM.readable()) {
            char c = GSM.getc();
            if (c == '\r' || c == '\n') c = '$';
            buffer[i++] = c;
            if(i > count)break;
        }
        if(i > count)break;
        if(t.read() > 3) {
            t.stop();
            t.reset();
            break;
        }
    }
    wait(0.5);
    while(GSM.readable()) {  
        char c = GSM.getc();
    }
    return 0;
}

void cleanBuffer(char *buffer, int count)
{
    for(int i=0; i < count; i++) {
        buffer[i] = '\0';
    }
}

void sendCmd(char *cmd)
{
    GSM.puts(cmd);
}

int waitForResp(char *resp, int timeout)
{
    int len = strlen(resp);
    int sum=0;
    t.start();

    while(1) {
        if(GSM.readable()) {
            char c = GSM.getc();
            sum = (c==resp[sum]) ? sum+1 : 0;
            if(sum == len)break;  
        }
        if(t.read() > timeout) {  
            t.stop();
            t.reset();
            return -1;
        }
    }
    t.stop();                 
    t.reset();                    
    while(GSM.readable()) {     
        char c = GSM.getc();
    }

    return 0;
}

int sendCmdAndWaitForResp(char *cmd, char *resp, int timeout)
{
    sendCmd(cmd);
    return waitForResp(resp,timeout);
}

int powerCheck(void)
{
    return sendCmdAndWaitForResp("AT\r\n", "OK", 2);    
}

int checkSIMStatus(void)
{
    char gprsBuffer[30];
    int count = 0;
    cleanBuffer(gprsBuffer,30);
    while(count < 3) {
        sendCmd("AT+CPIN?\r\n");
        readBuffer(gprsBuffer,30);
        if((NULL != strstr(gprsBuffer,"+CPIN: READY"))) {
            break;
        }
        count++;
        wait(1);
    }

    if(count == 3) {
        return -1;
    }
    return 0;
}

int checkSignalStrength(void)
{
    char gprsBuffer[100];
    int index,count = 0;
    cleanBuffer(gprsBuffer,100);
    while(count < 3) {
        sendCmd("AT+CSQ\r\n");
        readBuffer(gprsBuffer,25);
        if(sscanf(gprsBuffer, "AT+CSQ$$$$+CSQ: %d", &index)>0) {
            break;
        }
        count++;
        wait(1);
    }
    if(count == 3) {
        return -1;
    }
    return index;
}

int init()
{
    for(int i = 0; i < 3; i++){
        sendCmdAndWaitForResp("AT\r\n", "OK", 1);
        wait(0.5);
    }
    if(0 != checkSIMStatus()) {
        return -1;
    }
    if(checkSignalStrength()<1) {
        return -1;
    }
   
    GSM.attach(&Rx_interrupt, Serial::RxIrq);
    return 0;
}

int readSMSpdu(char *message, int index)
{
    int i = 0;
    char gprsBuffer[100];
    char *p,*s;
    GSM.printf("AT+CMGR=%d\r\n",index);
    cleanBuffer(gprsBuffer,100);
    readBuffer(gprsBuffer,100);
    if(NULL == ( s = strstr(gprsBuffer,"+CMGR"))) {
        return -1;
    }
    if(NULL != ( s = strstr(gprsBuffer,"+32"))) {
        p = s + 6;
        while((*p != '$')&&(i < 5)) {
            message[i++] = *(p++);
        }
        message[i] = '\0';
    }
    return 0;
}

int deleteSMS(int index)
{
    char cmd[32];
    snprintf(cmd,sizeof(cmd),"AT+CMGD=%d\r\n",index);
    sendCmd(cmd);
    return 0;
}

void Rx_interrupt(){
     }
   
int main(void)
       { 
       LedVerde=1;
       LedRojo=1;
       LedAzul=1;
       GSM.baud(9600);
       GSM.format(8,Serial::None,1); 

                    
       while(1){ 
       if (button1.falling())
        { 
          index1=!index1;
           if (index1==0){
           GSM.printf("VERDEON");}
           else{
           GSM.printf("VERDEOF");    
           }
        }   
       if (button2.falling())
        { 
          index2=!index2;
           if (index2==0){
           GSM.printf("ROJOON");}
           else{
           GSM.printf("ROJOOF");    
           }
        }   
        
        if (button3.falling())
        { 
          index3=!index3;
           if (index3==0){
           GSM.printf("AZULON");}
           else{
           GSM.printf("AZULOF");    
           }
        }   
       
       
       
       
       
       
          
       if (GSM.readable()) {
            readBuffer(buffer,100);
            pc.printf("buffer= %s\n\r ",buffer);
            pc.printf("buffer= %c  %c\n\r ",buffer[10],buffer[11]);
                if(buffer[67]=='A'){for(i=0;i<86;i++)
                 {buffermsg[i]=buffer[i];}
                 pc.printf("mensaje= %s\n\r ",buffermsg); 
                 pc.printf("mensaje[72]= %c mensaje[73]=%c\n\r ",buffermsg[72],buffermsg[73]);        
                 buffer[67]='c';
                 }
                 
 if(buffer[10]=='S'&& buffer[11]=='M'){
             for(i=0;i<5;i++)
             {buffer1[i]=buffer[2+i];}
             pc.printf("buffer1= %s\n\r ",buffer1);         
             buffer[10]='c';
             buffer[11]='c';
             }
if(buffer1[3]=='T'){pc.printf("AT+CMGL=0\n\r");
            wait(0.5);
            GSM.printf("AT+CMGL=0\r\n");
            buffer1[3]='p';
            }
            

//   CC3219642FCBC965   ESTO SIGNIFICA "Led verde"  si mandan ese mensaje de texto se prende el led azul
         
if(buffermsg[70]=='C' && buffermsg[71]=='C' && buffermsg[72]=='3' && buffermsg[73]=='2' && buffermsg[74]=='1' && buffermsg[75]=='9' && buffermsg[76]=='6' && buffermsg[77]=='4' && buffermsg[78]=='2' && buffermsg[79]=='F' && buffermsg[80]=='C' && buffermsg[81]=='B' && buffermsg[82]=='C' && buffermsg[83]=='9' && buffermsg[84]=='6' && buffermsg[85]=='5'){LedAzul=0;}
if(buffermsg[72]=='7' && buffermsg[73]=='3'){LedAzul=1;}  //apaga con Lgeverde
               
         
    }            
}
}