pic16f1827 and lcd1602 via mcc (mplab x 6.25)

 https://blog.goo.ne.jp/jh7ubc/e/66badf28bae9b9fd3411f486d2b9a785

PIC16F1827 MCC I2Cインターフェース付きLCD1602表示テスト 5v 供給で文字がでた！

ただしカウントアップがでないので

【PICマイコン】LCD(AQM1602)で数字のカウントアップを表示する【PIC16F1938】 | Wak-tech　も参考にして以下で完成

/*

* PIC12F1827 MCC I2C LCD1602 TEST

* 2021.07.10

* JH7UBC Keiji Hata

*/

#include <stdlib.h>

#include <stdio.h>

#include "mcc_generated_files/mcc.h"

#include "mcc_generated_files/examples/i2c1_master_example.h"

#define I2C_LCD_addr 0x27

#define LCD_EN 0b00000100//Enable

#define LCD_BL 0b00001000//Back Light

#define LCD_CMD 0x00

#define LCD_CHR 0x01

#define LCD_LINE1 0x80

#define LCD_LINE2 0xC0

//I2C LCDに1byteのdataを書き込む

void I2C_write_data(uint8_t data){

I2C1_Write1ByteRegister(I2C_LCD_addr, (data | LCD_EN | LCD_BL),(data | LCD_BL));

__delay_us(100);

}

//I2C LCDにコマンドまたは文字を送る

void LCD_write(uint8_t data, uint8_t mode){

//上位4bitを送る

I2C_write_data((data & 0xF0) | mode);

//下位4bitを送る

I2C_write_data(((data << 4) & 0xF0) | mode);

}

//I2C LCD 初期化

void LCD_init(){

__delay_ms(40);

LCD_write(0x33,LCD_CMD);//8bit mode set 2回

LCD_write(0x32,LCD_CMD);//8bit mode set 1回,4bit mode set

LCD_write(0x06,LCD_CMD);//Entry mode set

LCD_write(0x0C,LCD_CMD);//display ON,cursol OFF,blink OFF

LCD_write(0x28,LCD_CMD);//Function set 4bit mode,2line

LCD_write(0x01,LCD_CMD);//Clear display

__delay_ms(1);

}

void LCD_clear(){

LCD_write(0x01,LCD_CMD);

__delay_ms(1);

}

void LCD_home(){

LCD_write(0x02,LCD_CMD);

__delay_ms(1);

}

void LCD_cursor(uint8_t x,uint8_t y){

if(y == 0){

LCD_write(LCD_LINE1 + x,LCD_CMD);

}

if(y == 1){

LCD_write(LCD_LINE2 + x,LCD_CMD);

}

}

//文字列の表示

void LCD_str(char *str){

while(*str)

LCD_write(*str++,LCD_CHR); //pointer increment

}

//1文字表示

void putch(char ch){

LCD_write(ch,LCD_CHR);

}

void main(void)

{

// initialize the device

SYSTEM_Initialize();

// Enable the Global Interrupts

INTERRUPT_GlobalInterruptEnable();

// Enable the Peripheral Interrupts

INTERRUPT_PeripheralInterruptEnable();

LCD_init();

LCD_cursor(2,0);

char msg[] = "Hello World!";

LCD_str(msg);

// below count part

int count = 0;

char moji[] = "";

while (1){    

 LCD_cursor(2,1);

 sprintf(moji,"counter:%d",count);     //mojiにcounter:countを代入

 LCD_str(moji);                

 count++;

 __delay_ms(1000);

 }

}