PIC16F-12-I2C-LCD-MAIN.C

// PIC16F877A Configuration Bit Settings
#pragma config FOSC = HS        // Oscillator Selection bits (HS oscillator)
#pragma config WDTE = OFF       // Watchdog Timer Enable bit (WDT disabled)
#pragma config PWRTE = OFF      // Power-up Timer Enable bit (PWRT disabled)
#pragma config BOREN = OFF      // Brown-out Reset Enable bit (BOR disabled)
#pragma config LVP = OFF        // Low-Voltage (Single-Supply) In-Circuit Serial Programming Enable bit (RB3 is digital I/O, HV on MCLR must be used for programming)
#pragma config CPD = OFF        // Data EEPROM Memory Code Protection bit (Data EEPROM code protection off)
#pragma config WRT = OFF        // Flash Program Memory Write Enable bits (Write protection off; all program memory may be written to by EECON control)
#pragma config CP = OFF         // Flash Program Memory Code Protection bit (Code protection off)

unsigned char i2c_add, BackLight_State = LCD_BACKLIGHT;
unsigned char RS;

void main(void) {
    
    // Initialize I2C and LCD
    I2C_Master_Init();
    LCD_Init(0x4E);    // Initialize LCD module with I2C address = 0x4E
 
    // Write strings to LCD
    LCD_Set_Cursor(1, 1);
    LCD_Print_String("  THE EMBEDDED  ");
    LCD_Set_Cursor(2, 1);  
    LCD_Print_String("     THINGS     ");
    __delay_ms(2500);

    // Animation loop
    while(1)
    {
       LCD_SR();
       __delay_ms(350); 
       LCD_SR();
       __delay_ms(350); 
       LCD_SL();
       __delay_ms(350);
       LCD_SL();
       __delay_ms(350);
    }
    return;
}

void I2C_Master_Init(void)
{
    SSPCON  = 0x28;
    SSPCON2 = 0x00;
    SSPSTAT = 0x00;
    SSPADD = ((_XTAL_FREQ/4)/I2C_BaudRate) - 1;
    SCL_D = 1;
    SDA_D = 1; 
}

void I2C_Master_Wait(void)
{
    while ((SSPSTAT & 0x04) || (SSPCON2 & 0x1F));
}

void I2C_Master_Start(void)
{
    I2C_Master_Wait();
    SEN = 1;
}

void I2C_Master_Stop(void)
{
    I2C_Master_Wait();
    PEN = 1;
}