Help me to use sim900DevIde to implement users application in SIM900

Code C - [expand]
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void fl_entry()
{
    u16 i;
    ebdat7_01DebugTrace((const char *)"\r\n<<<Entry Customer Task Work>>>\r\n");    
 
    ebdat9_03SetModemdataToFL(TRUE);
    ebdat9_01SendToModem((u8*)"AT+ICF=3,3;+IPR=115200\r",strlen("AT+ICF=3,3;+IPR=115200\r"));
 
    p1=9;
    p2=3;
    p3=68;//4;
    p4=5;
    p5=1;
    fl_memset(ByteBuf, 0x00, 20);
    //i = sprintf(ByteBuf, "AT+CRWP=%d,%d,%d",p1, p2, p3);
    //ebdat7_01DebugTrace((const char *)"Sprintf %d : %d, %d, %d\r\n", p1, p2, p3);
    
//  SysTick = ebdat8_08GetSystemTickCounter( );
//  SysTick += 20;
//  while(ebdat8_08GetSystemTickCounter( )<=SysTick);
    
    //i = sscanf(ByteBuf, "AT+CRWP=%d,%d,%d",&p1, &p2, &p3);
    //ebdat7_01DebugTrace((const char *)"sscanf %d para: %d, %d, %d\r\n", i, p1, p2, p3);
    
    
    //ebdat7_01DebugTrace((const char *)"<<<<<<<EAT Task Work Loop begin>>>>>>>");
if (ebdat6_08pinConfigureToUnused((FlPinName)p3) == FL_OK) /*set pin to UNUSED status successfully*/
{
    if(ebdat9_05GetSerialPortTxStatus())
    {
        ebdat9_02SendToSerialPort((char *)"\r\nset PIN to UNUSED status successfully\r\n", sizeof("\r\nset PIN to UNUSED status successfully\r\n"));
    }
    while(!ebdat9_05GetSerialPortTxStatus());
    fl_memset(ByteBuf, 0x00, sizeof(ByteBuf));
    if (ebdat6_02GpioSubscribe((FlPinName)p3, (FlGpioDirection)p4, (bool)p5) == FL_OK)/*set GPIO to UNUSED status successfully*/
    {
        if(ebdat9_05GetSerialPortTxStatus())
        {
            ebdat9_02SendToSerialPort((char *)"\r\nset PIN successfully\r\n", sizeof("\r\nset PIN successfully\r\n"));
        }
    }
    else
    {
    if(ebdat9_05GetSerialPortTxStatus())
    {
        ebdat9_02SendToSerialPort((char *)"\r\nset PIN failed\r\n", sizeof("\r\nset PIN failed\r\n"));
    }
}
else
{
    if(ebdat9_05GetSerialPortTxStatus())
    {
        ebdat9_02SendToSerialPort((char *)"\r\nset PIN to UNUSED status failed\r\n", sizeof("\r\nset PIN to UNUSED status failed\r\n"));
    }
}