/*
  main.cpp
  2013 Copyright (c) Seeed Technology Inc.  All right reserved.
 
  Author:lawliet zou(lawliet.zou@gmail.com)
  2014-1-21
 
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.
 
  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/
#include "mbed.h"
#include "USBSerial.h"
 
#define PINPWR          P1_2    // power on EG 10, low enable
#define PINONOFF        P1_7    // switch of EG10, low enable, low for 2s to turn on EG10
 
DigitalOut eg10_pwr(PINPWR);
DigitalOut eg10_on(PINONOFF);
 
Serial gprs(USBTX, USBRX);
USBSerial pc;
 
void EG10_PowerUp(void)
{
    eg10_pwr = 1;
    eg10_on  = 1;
    wait(2);
    eg10_pwr = 0;
    eg10_on = 0;
    wait(2);
    eg10_on = 1;
    wait(2);
}
 
// Called by ISR
void settingsChanged(int baud, int bits, int parity, int stop)
{
    const Serial::Parity parityTable[] = {Serial::None, Serial::Odd, Serial::Even, Serial::Forced0, Serial::Forced1};
 
    if (stop != 2) {
        stop = 1;   // stop bit(s) = 1 or 1.5
    }
 
    gprs.baud(baud);
    gprs.format(bits, parityTable[parity], stop);
}
 
int main()
{
    pc.attach(settingsChanged);
    EG10_PowerUp();
 
    while (1) {
        while (gprs.readable()) {
            pc.putc(gprs.getc());
        }
 
        while (pc.readable()) {
            gprs.putc(pc.getc());
        }
    }
}