pic16f18877lcd_ok.cpp

// PIC16F18877 Configuration Bit Settings

// 'C' source line config statements

// CONFIG1
#pragma config FEXTOSC = OFF    // External Oscillator mode selection bits (Oscillator not enabled)
#pragma config RSTOSC = HFINT1  // Power-up default value for COSC bits (HFINTOSC (1MHz))
#pragma config CLKOUTEN = OFF   // Clock Out Enable bit (CLKOUT function is disabled; i/o or oscillator function on OSC2)
#pragma config CSWEN = ON       // Clock Switch Enable bit (Writing to NOSC and NDIV is allowed)
#pragma config FCMEN = ON       // Fail-Safe Clock Monitor Enable bit (FSCM timer enabled)

// CONFIG2
#pragma config MCLRE = ON       // Master Clear Enable bit (MCLR pin is Master Clear function)
#pragma config PWRTE = OFF      // Power-up Timer Enable bit (PWRT disabled)
#pragma config LPBOREN = OFF    // Low-Power BOR enable bit (ULPBOR disabled)
#pragma config BOREN = ON       // Brown-out reset enable bits (Brown-out Reset Enabled, SBOREN bit is ignored)
#pragma config BORV = LO        // Brown-out Reset Voltage Selection (Brown-out Reset Voltage (VBOR) set to 1.9V on LF, and 2.45V on F Devices)
#pragma config ZCD = OFF        // Zero-cross detect disable (Zero-cross detect circuit is disabled at POR.)
#pragma config PPS1WAY = ON     // Peripheral Pin Select one-way control (The PPSLOCK bit can be cleared and set only once in software)
#pragma config STVREN = ON      // Stack Overflow/Underflow Reset Enable bit (Stack Overflow or Underflow will cause a reset)

// CONFIG3
#pragma config WDTCPS = WDTCPS_31// WDT Period Select bits (Divider ratio 1:65536; software control of WDTPS)
#pragma config WDTE = OFF       // WDT operating mode (WDT Disabled, SWDTEN is ignored)
#pragma config WDTCWS = WDTCWS_7// WDT Window Select bits (window always open (100%); software control; keyed access not required)
#pragma config WDTCCS = SC      // WDT input clock selector (Software Control)

// CONFIG4
#pragma config WRT = OFF        // UserNVM self-write protection bits (Write protection off)
#pragma config SCANE = available// Scanner Enable bit (Scanner module is available for use)
#pragma config LVP = ON         // Low Voltage Programming Enable bit (Low Voltage programming enabled. MCLR/Vpp pin function is MCLR.)

// CONFIG5
#pragma config CP = OFF         // UserNVM Program memory code protection bit (Program Memory code protection disabled)
#pragma config CPD = OFF        // DataNVM code protection bit (Data EEPROM code protection disabled)

// #pragma config statements should precede project file includes.
// Use project enums instead of #define for ON and OFF.


#include <xc.h>
#include <stdint.h>
#include <stdio.h>

// LCD module connections
#define LCD_RS PORTCbits.RC2
#define LCD_EN PORTCbits.RC3
#define LCD_D4 PORTCbits.RC4
#define LCD_D5 PORTCbits.RC5
#define LCD_D6 PORTCbits.RC6
#define LCD_D7 PORTCbits.RC7
#define LCD_DATA_PORT PORTC
#define _XTAL_FREQ  4000000

// Function prototypes
void LCD_Init();
void LCD_Cmd(unsigned char);
void LCD_Char(unsigned char);
void LCD_String(const char*);
void LCD_Clear();
void LCD_Send(int RS,unsigned char data);



void main(void) {
    char name[16] = "Aung Win Htut";
    int i = 32;
    LCD_Init();
    LCD_Clear();
    while (1) {
        i++;
        if(i>127)
        {
            i = 32;
        }
        LCD_Clear();
        LCD_Cmd(0x00);
        LCD_Char((char)i);
        __delay_ms(100);
    }
    return;
}

void LCD_Init() {

    TRISC = 0x00; //all C port pins are output
    __delay_ms(15);

    LCD_Cmd(0x02);  // Return home
    LCD_Cmd(0x28);  // 4-bit mode - 2 line display - 5x7 font
    LCD_Cmd(0x0C);  // Display ON - Cursor OFF - Blink OFF
    LCD_Cmd(0x06);  // Increment cursor - No shift
    LCD_Cmd(0x80);  // Address DDRAM with 0 offset 80h
}

void LCD_Cmd(unsigned char command) {
    LCD_Send(0,command);
}

void LCD_Char(unsigned char data) {
    LCD_Send(1,data);
}

void LCD_Send(int RS,unsigned char data)
{

    LCD_RS = RS;     // Data mode data = 1101, 1001
    LCD_DATA_PORT = (LCD_DATA_PORT & 0x0F) | (data & 0xF0);   // Send higher nibble 1101,0000

    LCD_EN = 1;     // Enable pulse
    __delay_us(1);
    LCD_EN = 0;
    __delay_us(200);
    LCD_DATA_PORT = (LCD_DATA_PORT & 0x0F) | ((data << 4) & 0xF0);   // Send lower nibble 1001,0000

    LCD_EN = 1;     // Enable pulse
    __delay_us(1);
    LCD_EN = 0;
    __delay_ms(2);

}

void LCD_String(const char* text) {
    while (*text != '\0') {
        LCD_Char(*text++);
    }
}

void LCD_Clear() {
    LCD_Cmd(0x01);  // Clear display
    __delay_ms(2);
}