File content as of revision 2:a8dcb07a1d00:

#include "mbed.h"

Serial pc(USBTX, USBRX);    // computer to mbed board
Serial esp(D1, D0);         // mbed board to target board

int
main()
{
    pc.baud(115200);
    esp.baud(9600);
    wait(0.1);
    pc.printf("\r\n########### ready ###########\r\n");
    esp.printf("AT+RST\r\n");
    while(1) {
        if(pc.readable()) {
            char c = pc.getc();
            //pc.putc(c); // echo character back to computer for sanity
            //if(c == '\r'){
//                esp.printf("\r\n");
//            }
//            else{
            esp.putc(c);
//            }
        }
        if(esp.readable()) {
            char c = esp.getc();
            //if(c == '\n'){
//                pc.printf("\\n");
//                }
//            if(c == '\r'){
//                pc.printf("\\r");
//            }

            pc.putc(c);
        }
    }
}