Question

我正在制作pic单片机编程并最近向lcd制作了2个代码，一个在mplab中，另一个在mikroc中实际上都在isis中工作但是当我在实际中尝试它时只在微控制器中工作的mikroc代码我没有知道实际上是什么问题/为什么会发生这种情况我不认为这是硬件或软件代码，因为它是相同的电路，并且两个代码都在isis中工作如果有人想查看代码，所以这里是：

MIKROC：

    // Lcd pinout settings
    sbit LCD_RS at RC0_bit;
    sbit LCD_EN at RC1_bit;
    sbit LCD_D7 at RB7_bit;
    sbit LCD_D6 at RB6_bit;
    sbit LCD_D5 at RB5_bit;
    sbit LCD_D4 at RB4_bit;

    // Pin direction
    sbit LCD_RS_Direction at TRISC0_bit;
    sbit LCD_EN_Direction at TRISC1_bit;
    sbit LCD_D7_Direction at TRISB7_bit;
    sbit LCD_D6_Direction at TRISB6_bit;
    sbit LCD_D5_Direction at TRISB5_bit;
    sbit LCD_D4_Direction at TRISB4_bit;

    void main() {
         Lcd_Init();
         Lcd_Cmd(_LCD_CLEAR);               // Clear display
         Lcd_Cmd(_LCD_CURSOR_OFF);          // Cursor off

         Lcd_Out(1, 3, "Hello!");

    }

MPLAB：

main.c中：

       #include "config.h"

        unsigned char CurvyObject[8] = { 0x01,0x02,0x04,0x08,0x10,0x11,0x1f,0x00 };

        void main(){
            TRISB = 0;
            TRISC = 0;
            send_command(0x38);
            __delay_us(40);
            send_command(0x01);
            __delay_ms(1.75);
            send_command(0x0C);
            __delay_us(40);
            moveto(0, 0, 0, 0, 0, 0, 0);
            __delay_us(40);
            write_character(70);
            __delay_us(50);
            write_character(97);
            __delay_us(50);
            write_character(100);
            __delay_us(50);
            write_character(121);
            __delay_us(50);

            while(1);


        }

的config.h：

/* 
             * File:   config.h
             * Author: Fady
             *
             * Created on August 14, 2014, 6:19 PM
             */


            // PIC16F877A Configuration Bit Settings

            // 'C' source line config statements

            #include <xc.h>

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

            // CONFIG
            #pragma config FOSC = XT        
            #pragma config WDTE = OFF       
            #pragma config PWRTE = OFF      
            #pragma config BOREN = ON       
            #pragma config LVP = ON         
            #pragma config CPD = OFF        
            #pragma config WRT = OFF        
            #pragma config CP = OFF         

            #define _XTAL_FREQ 4000000

            unsigned char i;

            //Library Declaration:
            void send_command(int command);
            void write_character(int character);
            void enable_blink();
            void moveto(char b6, char b5, char b4, char b3, char b2, char b1, char b0);

            void send_command(int command){
                PORTB = command;
                PORTCbits.RC0 = 0;
                enable_blink();

            }

            void write_character(int character){
                PORTB = character;
                PORTCbits.RC0 = 1;
                enable_blink();

            }

            void enable_blink(){
                PORTCbits.RC1 = 1;
                __delay_ms(10);
                PORTCbits.RC1 = 0;
                __delay_ms(10);

            }

            void moveto(char b6, char b5, char b4, char b3, char b2, char b1, char b0){
                PORTCbits.RC0 = 0;
                PORTBbits.RB7 = 1;

                PORTBbits.RB6 = b6;
                PORTBbits.RB5 = b5;
                PORTBbits.RB4 = b4;
                PORTBbits.RB3 = b3;
                PORTBbits.RB2 = b2;
                PORTBbits.RB1 = b1;
                PORTBbits.RB0 = b0;

                enable_blink();

            }

Answer 1

最好在启动程序之前确保所有外围设备和输出都处于已知状态。如评论中所述，您从未确定LCD是否正确配置了R / W引脚。

PORTCbits.RC2=0; // The Microcontroller will always write to the LCD   
                 // Replace RC2 with your R/W pin

除此之外，我将您的LCD库与您制作的LCD库进行了比较，但未配置输入模式，请尝试添加：

send_command(6);      //Cursor Move direction and Display Shift

查看此通用数据表，了解您是否根据需要配置了模块：http://www.lcd-module.com/eng/pdf/doma/dip162-de.pdf

另一方面，我看到了moveto（）;函数用于定位光标，我可以建议我的方法：

// L1=128,L2=192,L3=144,L4=208 
send_command(L1+6);    // Go to the 6th character of the first line

MPLAB代码无法正常工作

1 个答案: