Hi i'm kinda new here but this is my code for 16x2 Lcd It was made with Keil uVision, Enjoy
#include <REGX52.H> #define LCD_data P2 #define LCD_rs P1_0 #define LCD_rw P1_1 #define LCD_en P1_2 void LCD_busy(void); void LCD_poweron(void); void LCD_command(unsigned char var); void LCD_senddata(unsigned char var); void LCD_sendstring(unsigned char *var); void LCD_init(void); void main(void) { unsigned char msg[] ="Learning"; LCD_poweron(); // 15ms delay LCD_init(); LCD_command (0x80); // Set CGRAM adress,data is Avaible from uC LCD_sendstring(msg); while(1); } void LCD_busy() { unsigned char i,j; for(i=0;i<50;i++) for(j=0;j<255;j++); } void LCD_poweron() { unsigned int i; for (i=0;i<22500; i++); } void LCD_command(unsigned char var) { LCD_data = var; //Function set: 2 Line, 8-bit, 5x8 dots LCD_rs = 0; //Selected command register LCD_rw = 0; //We are writing in instruction register LCD_en = 1; //Enable H->L LCD_en = 0; LCD_busy(); //Wait for LCD to process the command } void LCD_sendstring(unsigned char *var) { while(*var) //till string ends LCD_senddata(*var++); //send characters one by one } void LCD_senddata(unsigned char var) { P2 = var; //Function set: 2 Line, 8-bit, 5x7 dots LCD_rs = 1; //Selected data register LCD_rw = 0; //We are writing LCD_en = 1; //Enable H->L LCD_en = 0; LCD_busy(); //Wait for LCD to process the command } void LCD_init(void) { LCD_data = 0x38; //Function set: 2 Line, 8-bit, 5x8 dots LCD_rs = 0; //Selected command register LCD_rw = 0; //We are writing in data register LCD_en = 1; //Enable H->L LCD_en = 0; LCD_busy(); //Wait for LCD to process the command LCD_data = 0x0F; //Display on, Curson blinking command LCD_rs = 0; //Selected command register LCD_rw = 0; //We are writing in data register LCD_en = 1; //Enable H->L LCD_en = 0; LCD_busy(); //Wait for LCD to process the command LCD_data = 0x01; //Clear LCD LCD_rs = 0; //Selected command register LCD_rw = 0; //We are writing in data register LCD_en = 1; //Enable H->L LCD_en = 0; LCD_busy(); //Wait for LCD to process the command LCD_data = 0x06; //Entry mode, auto increment with no shift LCD_rs = 0; //Selected command register LCD_rw = 0; //We are writing in data register LCD_en = 1; //Enable H->L LCD_en = 0; //Enable H->L LCD_busy(); }