File content as of revision 0:803792acd19e:

#include "mbed.h"
#include "SoftSerial.h"

SoftSerial nucleo (D8,D9);
Serial pc(SERIAL_TX, SERIAL_RX);
char sent,rec;
int i =0;
int k =0;
int main()
{
    char msm[25]= {};
    char led[25]= {};
    char com[3] = {'o','f','f'};

    while(1) {

        if (pc.readable()>0) {
            sent=pc.getc();
            if(sent == 13) {
                for (int j = 0; j<i; j++) {
                    nucleo.printf("%c",msm[j]);
                    pc.printf("%c",msm[j]);
               wait(0.01);}
               nucleo.printf("\n\r");
               pc.printf("\n\r");
                i=0;
            } else {
                msm[i]=sent;
                i++;
            }
        }
        if(nucleo.readable()>0) {
             rec=nucleo.getc();             
             pc.printf("%c",rec);
     wait(0.01);
     led[k]=rec; 
     k++;
     
         }
     
    }
}