tmk_core/tool/mbed/mbed-sdk/libraries/net/cellular/CellularModem/ussd/USSDInterface.h

   1 /* USSDInterface.h */
   2 /* Copyright (C) 2012 mbed.org, MIT License
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
   5  * and associated documentation files (the "Software"), to deal in the Software without restriction,
   6  * including without limitation the rights to use, copy, modify, merge, publish, distribute,
   7  * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
   8  * furnished to do so, subject to the following conditions:
   9  *
  10  * The above copyright notice and this permission notice shall be included in all copies or
  11  * substantial portions of the Software.
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
  14  * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  16  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  17  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  18  */
  19
  20 #ifndef USSDINTERFACE_H_
  21 #define USSDINTERFACE_H_
  22
  23 #include "core/fwk.h"
  24
  25 #include "rtos.h"
  26
  27 #include "at/ATCommandsInterface.h"
  28
  29 /** Component to send/receive Unstructured Supplementary Service Data (USSD)
  30  *
  31  */
  32 class USSDInterface : protected IATCommandsProcessor, IATEventsHandler
  33 {
  34 public:
  35   /** Create USSDInterface instance
  36      @param pIf Pointer to the ATCommandsInterface instance to use
  37    */
  38   USSDInterface(ATCommandsInterface* pIf);
  39
  40   /** Initialize interface
  41    Configure USSD commands & register for USSD-related unsolicited result codes
  42   */
  43   int init();
  44
  45   /** Send a USSD command & wait for its result
  46     @param command The command to send
  47     @param result Buffer in which to store the result
  48     @param maxLength Maximum result length that can be stored in buffer (including null-terminating character)
  49     @return 0 on success, error code on failure
  50   */
  51   int send(const char* command, char* result, size_t maxLength);
  52
  53 protected:
  54   //IATCommandsProcessor, needed for implementations of 3GGP standard < r06
  55   virtual int onNewATResponseLine(ATCommandsInterface* pInst, const char* line);
  56   virtual int onNewEntryPrompt(ATCommandsInterface* pInst);
  57
  58   //IATEventsHandler, needed for implementations of 3GGP standard >= r06
  59   virtual bool isATCodeHandled(const char* atCode); //Is this AT code handled
  60   virtual void onDispatchStart();
  61   virtual void onDispatchStop();
  62   virtual char* getEventsEnableCommand();
  63   virtual char* getEventsDisableCommand();
  64   virtual void onEvent(const char* atCode, const char* evt);
  65
  66 private:
  67   void processResult(const char* data);
  68
  69   ATCommandsInterface* m_pIf;
  70   Mutex m_responseMtx; //To protect concurrent accesses btw the user's thread and the AT thread
  71   Semaphore m_responseSphre;
  72
  73   //Result
  74   volatile char* m_result;
  75   volatile size_t m_maxResultLength;
  76
  77 };
  78
  79
  80 #endif /* USSDINTERFACE_H_ */