File content as of revision 8:04b6a042595f:

/* USSDInterface.h */
/*
Copyright (C) 2012 ARM Limited.

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.
*/

#ifndef USSDINTERFACE_H_
#define USSDINTERFACE_H_

#include "core/fwk.h"

#include "rtos.h"

#include "drv/at/ATCommandsInterface.h"

/** Component to send/receive Unstructured Supplementary Service Data (USSD)
 *
 */
class USSDInterface : protected IATEventsHandler
{
public:
  /** Create USSDInterface instance
     @param pIf Pointer to the ATCommandsInterface instance to use
   */
  USSDInterface(ATCommandsInterface* pIf);

  /** Initialize interface
   Configure USSD commands & register for USSD-related unsolicited result codes
  */
  int init();

  /** Send a USSD command & wait for its result
    @param command The command to send
    @param result Buffer in which to store the result
    @param maxLength Maximum result length that can be stored in buffer (including null-terminating character)
    @return 0 on success, error code on failure
  */
  int send(const char* command, char* result, size_t maxLength);

protected:
  //IATEventsHandler
  virtual bool isATCodeHandled(const char* atCode); //Is this AT code handled
  virtual void onDispatchStart();
  virtual void onDispatchStop();
  virtual void onEvent(const char* atCode, const char* evt);

private:
  ATCommandsInterface* m_pIf;
  Mutex m_responseMtx; //To protect concurrent accesses btw the user's thread and the AT thread
  Semaphore m_responseSphre;

  //Result
  char* m_result;
  size_t m_maxResultLength;

};


#endif /* USSDINTERFACE_H_ */