pic16f1827 and acm1602 success code モシニャガ

 /*

 *      I2CLCD_lib

 */

#include <xc.h>

#include "I2CLCD.h"

#define _XTAL_FREQ 8000000

void I2C_init(void){

  TRISB |= 0b00010010;          //RB4(SCL1),RB1(SDA1)

  OPTION_REGbits.nWPUEN = 0;    // 0:PORTB内部プルアップのため

  WPUB  |= 0b00010010;          //RB4 and RB1 are weakpulluped!

  SSP1CON1 = 0b00101000;        // I2C master mode

  SSP1STAT = 0b00000000;        // I2C status

  SSP1ADD = 39;                 // I2C clock 50khz=8mhz/(4(39+1))

  return;

}

void I2C_start(void){

  SSP1CON2bits.SEN=1;

  while(SSP1CON2bits.SEN);

  return;

}

void I2C_stop(void){

  SSP1CON2bits.PEN=1;

  while(SSP1CON2bits.PEN);

  return;

}

void I2C_byte_write(unsigned char byte){

  SSP1IF=0;

  SSP1BUF=byte;

  while(!SSP1IF);

  while(SSP1CON2bits.ACKSTAT);  // wait for ACK return

  SSP1IF=0;

  return;

}

void I2C_LCD_cmd_write(unsigned char command){

  I2C_start();

  I2C_byte_write(0xA0);         //slave address

  I2C_byte_write(0x00);

  I2C_byte_write(command);

  I2C_stop();

  return;

}

void I2C_LCD_data_write(char data){

  I2C_start();

  I2C_byte_write(0xA0);         //slave address

  I2C_byte_write(0x80);

  I2C_byte_write(data);

  I2C_stop();

  return;

}

void LCD_init(void){

  I2C_init();

  I2C_LCD_cmd_write(0x38);

  __delay_ms(5);

  I2C_LCD_cmd_write(0x0C);

  __delay_ms(5);

  I2C_LCD_cmd_write(0x06);

  __delay_ms(5);

  I2C_LCD_cmd_write(0x01);

  __delay_ms(5);

  return;

}

void LCD_clear(void){

  I2C_LCD_cmd_write(0x01);

  __delay_ms(5);

  return;

}

void LCD_locate(unsigned char row,unsigned char col){

  unsigned char addr;

  switch(row){

    case 0: addr=0x00;

            break;

    case 1: addr=0x40;

            break;

  }

  if(col>15)

   col=0;

  addr+=col;

  addr|=0x80;

  I2C_LCD_cmd_write(addr);

  return;

}

void LCD_putc(char word){

  I2C_LCD_data_write(word);

  return;

}

void LCD_puts(char *string){

  unsigned char i;

  for(i=0;string[i]!='\0';++i){

    LCD_putc(string[i]);

    __delay_ms(5);

  }

  return;

}

  /*

 *      I2CLCD

 */

#include <xc.h>

#ifndef I2CLCD_LIB_H

#define I2CLCD_LIB_H

void I2C_init(void);

void I2C_start(void);

void I2C_stop(void);

void I2C_byte_write(unsigned char byte);

void I2C_LCD_cmd_write(unsigned char command);

void I2C_LCD_data_write(char data);

void LCD_init(void);

void LCD_clear(void);

void LCD_locate(unsigned char row,unsigned char col);

void LCD_putc(char word);

void LCD_puts(char *string);

#endif

/*

 *  Ｉ２Ｃ ＡＣＭ１６０２ＮＩ　【16F1827】

 *   ACM1602NI/main.c  Created on 2024/05/06, 12:02

 */

// config1

#pragma config FOSC = INTOSC , WDTE = OFF , PWRTE = ON , MCLRE = ON , CP = OFF , CPD = OFF

#pragma config BOREN = OFF , CLKOUTEN = OFF , IESO = OFF , FCMEN = OFF

// config2

#pragma config WRT = OFF , PLLEN = OFF , STVREN = ON , LVP = OFF 

#include <xc.h>

#include "I2CLCD.h"

#define _XTAL_FREQ 8000000

char moji[] = "Hello,world!";

char moji2[] = "PIC16F1827";

char moji3[] = "OK";

int main(void){

    OSCCON=0x72;            // 8MHz

    ANSELA=0x00;

    ANSELB=0x00;

    TRISA=0x00;

    TRISB=0x12;             // 0b00010010

    PORTB=0x00; // これはあってもなくてもOKだった

　 PORTA=0x00; // これはあってもなくてもOKだった

    

    LCD_init();             // LCDの初期化

    LCD_clear();            // 画面をクリア   

    

    LCD_locate(0,1);        // 1行目、2文字(列)目へ移動

    LCD_puts(moji);

    LCD_locate(1,3);        // 2行目、4文字(列)目へ移動

    LCD_puts(moji2);

    LCD_locate(1,14);       // 2行目、15文字(列)目へ移動

    LCD_puts(moji3);

    

    while(1){}

}    

吉野さんのおかげで成功　最初失敗したのはmain.cでTRISB設定をミスっていた？