1. Example 7 Liquid Crystal Display
Lecture L4.1

2. miniDragon+
2 pushbutton switches
LCD Header
Serial cable
A/D Pot
I/O headers
Run/Load switch
Reset button
7-segment display
Power plug
Keypad header

4. LCD on miniDragon+ Board

5. RS, R/W, and E Signals

10. Example 7 // Example 7: LCD Display
#include <hidef.h> /* common defines and macros */
#include <mc9s12dp256.h> /* derivative information */
#include "main_asm.h" /* interface to the assembly module */
#pragma LINK_INFO DERIVATIVE "mc9s12dp256b"
void main(void) {
char* q1;
char* q2;
char* q3;
char* q4;
q1 = "Programming";
q2 = "Microcontrollers";
q3 = "is";
q4 = "FUN";
PLL_init(); // set system clock frequency to 24 MHz

11. Example 7 (cont.) lcd_init(); // enable lcd set_lcd_addr(0x04);
type_lcd(q1); // write q1 - Programming
set_lcd_addr(0x42);
type_lcd(q2); // write q2 - Microcontrollers
set_lcd_addr(0x1D);
type_lcd(q3); // write q3 - is
set_lcd_addr(0x5C);
type_lcd(q4); // write q4 - FUN
for(;;){
} // wait forever }