Project Code

# define SW PORTD.RD7  // switch is connect to RD7
// Lcd module connections
sbit LCD_RS at RB0_bit;
sbit LCD_EN at RB1_bit;
sbit LCD_D4 at RB2_bit;
sbit LCD_D5 at RB3_bit;
sbit LCD_D6 at RB4_bit;
sbit LCD_D7 at RB5_bit;

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

void main() {
     TRISC = 0X00;                 // PORTC in output
     TRISD = 0X80;                  // RD7 is input
     PORTC = 0X00;                 // clear PORTC
     PORTD = 0X00;                 // Clear PORTD
     Lcd_Init();                    // Initialize Lcd module
     Lcd_Cmd(_LCD_CURSOR_OFF);      // Lcd cursor off
     Lcd_Cmd(_LCD_CLEAR);            // Led clear
     Lcd_Out(1,3,"DEVELOPED BY");     // Lcd show "DEVELOPED BY"
     Lcd_Out(2,1,"MINA TECHNOLOGY");   // Lcd show "MINA TECHNOLOGY"
     delay_ms(2000);                   // 2s delay
     Lcd_Cmd(_LCD_CLEAR);               // Lcd clear
     Lcd_Out(1,1,"Relay Interface");             // Lcd show "LATCH"
     Lcd_Out(2,1,"Relay:");              // Lcd show "LED:"
     Lcd_Out(2,8,"Deactive");

     while(1){                              // Endless loop
              if(SW==1){
                        while(SW==1);          // wait for SW release
                        PORTC.F0 = ~PORTC.F0;     // Toggle the PORTC.RC0
                        if(PORTC){
                                  Lcd_Out(2,8,"Active  ");
                                  }
                        else{
                             Lcd_Out(2,8,"Deactive");
                             }
                                           // Increase value
                        }
              }
}