GPRS.h

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#ifndef GPRS_H_
#define GPRS_H_


#include "Bitmanip.h"                   // due to: the bit manipulations macros
#include "Dinamic_Array.h"              // due to: dinamic array
#include "Time.h"                       // due to: software rtc
#include "UART2.h"                      // due to: serial communications functions
#include "GPS.h"                        // due to: GPS_setPostGPSInfoPacketsCallbackFunction function
#include <stdio.h>                      // due to: sprintf function

//*****************************************************************************
//
// Types and definitions
//
//*****************************************************************************

#ifndef DEFINE_TBOOLEAN                 // define unsigned char as tBoolean in only that case when it hasn't been defined yet somewhere else in the scope

typedef unsigned char tBoolean;         // use as bool
#define DEFINE_TBOOLEAN

#endif                                  // DEFINE_TBOOLEAN

//*****************************************************************************
//
// Types and definitions
//
//*****************************************************************************

#define AT_COMMAND_AT                               "AT\r\n"
#define AT_COMMAND_ECHO_OFF                         "ATE0\r\n"
#define AT_COMMAND_RESTART                          "AT+CFUN=1\r\n"
#define AT_COMMAND_ENABLE_ERROR_MESSAGES            "AT+CMEE=1\r\n"
#define AT_COMMAND_START_WIP_PACKET                 "AT+WOPEN=1\r\n"
#define AT_COMMAND_ENABLE_CLIP                      "AT+CLIP=1\r\n"
#define AT_COMMAND_SELECT_CHARACTERSET              "AT+CSCS=\"GSM\"\r\n"
#define AT_COMMAND_START_IP_STACK                   "AT+WIPCFG=1\r\n"
#define AT_COMMAND_CLOSE_IP_STACK                   "AT+WIPCFG=0\r\n"
#define AT_COMMAND_CONF_IP_STACK                    "AT+WIPCFG?\r\n"
#define AT_COMMAND_OPEN_BEARER                      "AT+WIPBR=1,6\r\n"
#define AT_COMMAND_CLOSE_BEARER                     "AT+WIPBR=0,6\r\n"
#define AT_COMMAND_START_BEARER                     "AT+WIPBR=4,6,0\r\n"
#define AT_COMMAND_SET_TCP_PARAMETERS               "AT+WIPOPT=2,1,2,51,1600\r\n"
#define AT_COMMAND_SET_TCP_IN_PARAMETERS            "AT+WIPOPT=2,1,2,50,1600\r\n"
#define AT_COMMAND_SWITCH_TO_AT_MODE                "+++"
#define AT_COMMAND_CLOSE_IP                         "AT+WIPCLOSE=2,1\r\n"
#define AT_COMMAND_OPEN_TCP_SOCKET                  "AT+WIPDATA=2,1,1\r\n"
#define AT_COMMAND_CLOSE_TCP_SOCKET                 "AT+WIPCLOSE=2,1\r\n"

#define AT_COMMAND_DUMP_BR                          "AT+WIPBR?\r\n"

#define GPRS_RESPONSE_BUFFER_SIZE                   1024

#define ATTEMPT_NUMBER                              5

#define PIN                                         "5003"

#define GPRS_ETX_CHAR                               '\x03'


typedef enum
{

    GPRS_Uninitialized = 0,
    GPRS_EscapeToCommandMode,
    GPRS_RestartGSM,
    GPRS_EchoOff,
    GPRS_ErrorOn,
    GPRS_AddPin,
    GPRS_OpenGSM,
    GPRS_ChangeCharSet,

    GPRS_Initialized,       // 8


    GPRS_OpenGPRS,
    GPRS_OpenBearer,
    GPRS_SetConnectionPoint,
    GPRS_AddUsername,
    GPRS_AddPassword,
    GPRS_ConnectToBearer,

    GPRS_ConnectedToBearer, // 15

    GPRS_WIPCreate,
    GPRS_WIPData,
    GPRS_SendingData,
    GPRS_Connected,
    GPRS_EscapeFromDataMode,
    GPRS_WIPClose,
    GPRS_DisconnectingFromBearer,
    GPRS_CloseGPRS,         // 23

    GPRS_Waiting

}tGPRS_state;


typedef struct
{
    char* pcCommand;
    tDateTime sWaitingDuration;
    
}tCommandInstance;


//*****************************************************************************
//
// Global variables.
//
//*****************************************************************************

//*****************************************************************************
//
// Function declarations
//
//*****************************************************************************

void GPRS_initGPRS(void);


void GPRS_executeGPRS(void);


void GPRS_processResponse(void);


void GPRS_addCommand(char* pcCommand, tDateTime sTimeoutDuration);


void GPRS_processCommand(void);


void GPRS_setState(tGPRS_state newState);


void GPRS_initCommandQueue(tDinamicArray* pDinamicArray);


void GPRS_appendResponse(const char* pcResponse);


void GPRS_clearResponseBuffer(void);


void GPRS_wait(tDateTime sWaitDuration, tGPRS_state eNextState);


tBoolean GPRS_isDeadlinePassed(void);


void GPRS_connectToBearer(void);


void GPRS_disconnectFromBearer(void);


void GPRS_httpPost(char* pcHost, char* pcPort, char* pcURL, char* pcData, unsigned int uiDataLength);


#endif /*GPRS_H_*/