File content as of revision 0:075ea2812998:

/*

Copyright (c) 2012-2014 RedBearLab

Permission is hereby granted, free of charge, to any person obtaining a copy of this software 
and associated documentation files (the "Software"), to deal in the Software without restriction, 
including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, 
and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, 
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 
PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE 
FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

*/

/*
 *    The application works with the BLEController iOS/Android App.
 *    Type something from the Terminal to send
 *    to the BLEController App or vice verse.
 *    Characteristics received from App will print on Terminal.
 */
 
// Import libraries 
#include "Arduino.h"
#include "BLEPeripheral.h"

Serial serial(USBTX, USBRX);

// The SPI construct, REQN and RDYN IO construct should be modified manually
// It depend on the board you are using and the REQN&RDYN configuration on BLE Shield
SPI spi(PTD2, PTD3, PTD1);      
DigitalInOut BLE_RDY(PTA13);  
DigitalInOut BLE_REQ(PTD5);   

unsigned char buf[16] = {0};
unsigned char len = 0;

/*----- BLE Utility -------------------------------------------------------------------------*/
// create peripheral instance, see pinouts above
BLEPeripheral            blePeripheral        = BLEPeripheral(&BLE_REQ, &BLE_RDY, NULL);

// create service
BLEService               uartService          = BLEService("713d0000503e4c75ba943148f18d941e");

// create characteristic
BLECharacteristic    txCharacteristic = BLECharacteristic("713d0002503e4c75ba943148f18d941e", BLENotify, 20);
BLECharacteristic    rxCharacteristic = BLECharacteristic("713d0003503e4c75ba943148f18d941e", BLEWriteWithoutResponse, 20);
/*--------------------------------------------------------------------------------------------*/
 
int main()
{ 
  serial.baud(9600);
  serial.printf("Serial begin!\r\n");

/*----- BLE Utility ---------------------------------------------*/
  // set advertised local name and service UUID
  blePeripheral.setLocalName("BLE Shield");
  
  blePeripheral.setAdvertisedServiceUuid(uartService.uuid());
  
  // add service and characteristic
  blePeripheral.addAttribute(uartService);
  blePeripheral.addAttribute(rxCharacteristic);
  blePeripheral.addAttribute(txCharacteristic);

  // begin initialization
  blePeripheral.begin();
/*---------------------------------------------------------------*/

  serial.printf("BLE UART Peripheral begin!\r\n");
  
  while(1)
  {
      BLECentral central = blePeripheral.central();
    
      if (central) 
      {
        // central connected to peripheral
        serial.printf("Connected to central\r\n");
    
        while (central.connected()) 
        {
          // central still connected to peripheral
          if (rxCharacteristic.written()) 
          {
            unsigned char len = rxCharacteristic.valueLength();
            const unsigned char *val = rxCharacteristic.value();
            serial.printf("didCharacteristicWritten, Length: %d\r\n", len); 
            unsigned char i = 0;
            while(i<len)
            {
              serial.printf("%d, ",val[i++]);
            }
            serial.printf("\r\n");
          }
          
          len = 0;
          if(serial.readable())
          {
              while( serial.readable() )
              {
                buf[len] = serial.getc();
                len++;
                delay(20);
              }
              serial.printf("Received from terminal: %d bytes\r\n", len);
              txCharacteristic.setValue((const unsigned char *)buf, len);
              len = 0;
          }
        }
        
        // central disconnected
        serial.printf("Disconnected from central\r\n");
      }
    }
}