[PIC] SD card implementation in GPS device with mikroc

//Memory Card Chip Select Connection
sfr sbit Mmc_Chip_Select at RC2_bit;
sfr sbit Mmc_Chip_Select_Direction at TRISC2_bit;
 
// LCD module connections
sbit LCD_RS at RB4_bit;
sbit LCD_EN at RB5_bit;
sbit LCD_D4 at RB0_bit;
sbit LCD_D5 at RB1_bit;
sbit LCD_D6 at RB2_bit;
sbit LCD_D7 at RB3_bit;

sbit LCD_RS_Direction at TRISB4_bit;
sbit LCD_EN_Direction at TRISB5_bit;
sbit LCD_D4_Direction at TRISB0_bit;
sbit LCD_D5_Direction at TRISB1_bit;
sbit LCD_D6_Direction at TRISB2_bit;
sbit LCD_D7_Direction at TRISB3_bit;
// End LCD module connections

char txt5[] = "GPS with PIC877A";
char txt6[] = "F.M.S.";
            //  "$xxxxx,xxxxxxxxx,xxxx.xxx,x,xxxxx.xxx,x,x,xx,x.x,xxx.x,x,xx.x,x,,*xx"; GPGGA
int i = 0;
int received = 0;
char DataType[] = "GPXXX";
char NMEA[] = "$xxxxx,xxxxxx.xx,x,xxxx.xx,x,xxxxx,x,x.x,x.x,xxxxxx,x.x,x*xx";
char receive;

unsigned char filename[] = "Temp.TXT";
unsigned char error;

void main()
{
while(1)
{
 TRISD = 0x00;
 Lcd_Init();                        // Initialize LCD
 Lcd_Cmd(_LCD_CURSOR_OFF);          // Cursor off
 Lcd_Out(1,1,txt5);                 // Write text in first row
 Lcd_Out(2,6,txt6);                 //displays txt5
 Delay_ms(1000);                    //displays txt6
 Lcd_Cmd(_LCD_CLEAR);               // Clear display
 Delay_ms(250);

 UART1_Init(9600);         // Initialize UART for GPS board connectivity
 SPI1_Init();
 SPI1_Init_Advanced(_SPI_MASTER_OSC_DIV64, _SPI_DATA_SAMPLE_MIDDLE, _SPI_CLK_IDLE_LOW, _SPI_LOW_2_HIGH);
 Delay_us(10);

 Delay_mS(100);
 Lcd_Cmd(_LCD_CLEAR);
 
 while(1)
 {
  if (UART1_Data_Ready() == 1)
  {
   receive = UART1_Read();
   if (receive == '$')  // Check if sentence begins.
   {
    received = 0;
    do
    {
     if (UART1_Data_Ready() == 1)
     {
      UART1_Read_Text(DataType, ",", 10);  // Capture GPXXX word
      received = 1;
     }
    }
    while(received == 0);
    // If it is GPRMC Data, then acquire it.
    if ((DataType[2] == 'R') && (DataType[3] == 'M') && (DataType[4] == 'C'))
    {
     received = 0;
     do
     {
      if (UART1_Data_Ready() == 1)
      {
       UART1_Read_Text(NMEA, "*", 100);   // Stop at *XX checksum data
       received = 1;
      }
     }
     while(received == 0);

     Lcd_Cmd(_LCD_CLEAR);
     // Latitude
     LCD_Out(1,1, "La:");
     LCD_Chr(1, 5, NMEA[13]);
     LCD_Chr(1, 6, NMEA[14]);
     LCD_Chr(1, 7, 223);
     LCD_Chr(1, 8, NMEA[15]);
     LCD_Chr(1, 9, NMEA[16]);
     LCD_Chr(1, 10, NMEA[17]);
     LCD_Chr(1, 11, NMEA[18]);
     LCD_Chr(1, 12, NMEA[19]);
     LCD_Chr(1, 13, NMEA[20]);
     LCD_Chr(1, 14, NMEA[21]);
     LCD_Chr(1, 16, NMEA[23]);

     // Longitude
     LCD_Out(2,1, "Lo:");
     LCD_Chr(2, 5, NMEA[25]);
     LCD_Chr(2, 6, NMEA[26]);
     LCD_Chr(2, 7, 223);
     LCD_Chr(2, 8, NMEA[27]);
     LCD_Chr(2, 9, NMEA[28]);
     LCD_Chr(2, 10, NMEA[29]);
     LCD_Chr(2, 11, NMEA[30]);
     LCD_Chr(2, 12, NMEA[31]);
     LCD_Chr(2, 13, NMEA[32]);
     LCD_Chr(2, 14, NMEA[33]);
     LCD_Chr(2, 15, NMEA[34]);
     LCD_Chr(2, 16, NMEA[36]);

     Delay_Ms(1000);
     Lcd_Cmd(_LCD_CLEAR);

     //DATA
     Lcd_Out(1,1,"Data:");
     LCD_Chr(1, 7, NMEA[50]);
     LCD_Chr(1, 8, NMEA[51]);
     LCD_Chr(1, 9, '/');
     LCD_Chr(1, 10, NMEA[52]);
     LCD_Chr(1, 11, NMEA[53]);
     LCD_Chr(1, 12, '/');
     LCD_Chr(1, 13, NMEA[54]);
     LCD_Chr(1, 14, NMEA[55]);

     //ORA
     Lcd_Out(2,1,"Ora:");
     LCD_Chr(2, 6, NMEA[0]);
     LCD_Chr(2, 7, NMEA[1]);
     LCD_Chr(2, 8, ':');
     LCD_Chr(2, 9, NMEA[2]);
     LCD_Chr(2, 10, NMEA[3]);
     LCD_Chr(2, 11, ':');
     LCD_Chr(2, 12, NMEA[4]);
     LCD_Chr(2, 13, NMEA[5]);

     Delay_Ms(1000);
     Lcd_Cmd(_LCD_CLEAR);
    }
    receive = "x";
    }
   }
  }
 }
}