/* Exercise 5.3 LCD tester */ /* Created David Miles April 2006 */ /* Updated Ben Rowland Febuary 2014 */ #include // CONFIG1 #pragma config FOSC = HS // Oscillator Selection (HS Oscillator, High-speed crystal/resonator connected between OSC1 and OSC2 pins) #pragma config WDTE = OFF // Watchdog Timer Enable (WDT disabled) #pragma config PWRTE = OFF // Power-up Timer Enable (PWRT disabled) #pragma config MCLRE = ON // MCLR Pin Function Select (MCLR/VPP pin function is MCLR) #pragma config CP = OFF // Flash Program Memory Code Protection (Program memory code protection is disabled) #pragma config CPD = OFF // Data Memory Code Protection (Data memory code protection is disabled) #pragma config BOREN = ON // Brown-out Reset Enable (Brown-out Reset enabled) #pragma config CLKOUTEN = OFF // Clock Out Enable (CLKOUT function is disabled. I/O or oscillator function on the CLKOUT pin) #pragma config IESO = OFF // Internal/External Switchover (Internal/External Switchover mode is disabled) #pragma config FCMEN = OFF // Fail-Safe Clock Monitor Enable (Fail-Safe Clock Monitor is disabled) // CONFIG2 #pragma config WRT = OFF // Flash Memory Self-Write Protection (Write protection off) #pragma config VCAPEN = OFF // Voltage Regulator Capacitor Enable (All VCAP pin functionality is disabled) #pragma config PLLEN = OFF // PLL Enable (4x PLL disabled) #pragma config STVREN = ON // Stack Overflow/Underflow Reset Enable (Stack Overflow or Underflow will cause a Reset) #pragma config BORV = LO // Brown-out Reset Voltage Selection (Brown-out Reset Voltage (Vbor), low trip point selected.) #pragma config LVP = OFF // Low-Voltage Programming Enable (High-voltage on MCLR/VPP must be used for programming) #define _XTAL_FREQ 19660800 // Defines the hardware crystal frequency allowing the delay function to work correctly #include "lcdlib.h" int main (void) { unsigned char x, y; unsigned char i = 0; ANSELB = 0x00; //Put PORTB into Digital mode, defaults to analogue OPTION_REG = 0xC0; lcd_start(); //Startup LCD for (x = 0; x < 16; x = x + 1) //Loop through X 0-15 { for (y = 0; y < 2; y = y + 1) //Loop through Y 0-1 { lcd_cursor(x, y); //Set the cursor position on the LCD lcd_print_ch('A' + i); //Print the character 'A' + the current count value 0-31 i = i + 1; } } lcd_cursor(8, 1); //Move the cursor to a fixed location lcd_cursor_on() ; //Display the cursor while (1) //Loop forever { } return 0; }