關于單片機+lcd1602在proteus仿真中亮了但無顯示問題

ID:1026277 · 發表于 2022-5-13 19:28

根據原理圖在proteus中仿真，但是代碼在實物上可以跑，仿真就沒有顯示了

原理圖和proteus圖
單片機代碼如下，純小白，希望幫幫
#include <reg52.h>

#define LCD1602_DB P2//lcd相關端口
#define state_wait 0 //系統等待按鍵信號狀態
#define state_temp_choose 1//等待光電傳感器信號，選擇溫度狀態

/***lcd相關端口***/
sbit LCD1602_RS = P0^7;
sbit LCD1602_RW = P0^6;
sbit LCD1602_E = P0^5;

sbit key_start = P3^5;//啟動按鍵
sbit temp_up = P2^4;//繼電器開關
sbit temp_set = P3^4;//光電傳感器讀取

void InitLcd1602();//lcd初始化
void LcdShowStr(unsigned char x, unsigned char y, unsigned char *str);//lcd顯示函數

int       readtemp();//讀取溫度傳感器值，實際溫度*10
int now_time = 0;
int state = state_wait;//系統狀態
int set_temp = 0;//設定溫度
char my_char[11] = "temp = 00.0";
char my_time[10] = "time = 000";
int show_flag = 0;//防止lcd刷新過于頻繁，1秒刷新一次

void main()
{
      InitLcd1602();//lcd初始化
      LcdShowStr(1, 0, "System ready");//lcd顯示系統準備完成
      /***定時器相關配置，定時50ms，方便計算***/
      TMOD = 0x01;//啟動定時器0
      TH0 = (65535-45872)/256;
      TL0 = (65535-45872)%256;
      EA = 1;
      ET0 = 1;

      while(state == state_wait)//檢測啟動按鍵
      {
            if(key_start == 0)
            {
                     state = state_temp_choose;
                     TR0 = 1;//啟動定時器
            }
      }
      LcdShowStr(1, 0, "          ");//lcd顯示系統啟動
      while(state == state_temp_choose)//檢測光電傳感器數據
      {
            if(temp_set == 0)
            {
                     set_temp = readtemp();
                     TR0 = 0;//停止計時
            }
      }
      set_temp = readtemp();
      my_char[7] = (int)(set_temp%1000/100) + '0';//提取溫度十位并轉換
      my_char[8] = (int)(set_temp%100/10) + '0';//提取溫度個位并轉換
      my_char[10] = (int)(set_temp%10) + '0';//顯示小數點后一位
      LcdShowStr(1, 1, my_char);//lcd顯示系統確定溫度成功
      while(1);
}
void T0_time() interrupt 1 //50ms中斷，每1秒（20次進入）刷新時間與溫度顯示
{
      TH0 = (65535-45872)/256;
      TL0 = (65535-45872)%256;
      show_flag ++;
      if(show_flag >= 20)
      {
            show_flag = 0;
            now_time++;
            my_time[7] = (int)(now_time/100) + '0';//提取時間百位并轉換
            my_time[8] = (int)(now_time%100/10) + '0';//提取時間十位并轉換
            my_time[9] = (int)(now_time%10) + '0';//提取時間個位并轉換
            LcdShowStr(1, 0, my_time);//lcd顯示時間
            set_temp = readtemp();
            my_char[7] = (int)(set_temp/100) + '0';//提取溫度十位并轉換
            my_char[8] = (int)(set_temp%100/10) + '0';//提取溫度個位并轉換
            my_char[10] = (int)(set_temp%10) + '0';//顯示小數點后一位
            LcdShowStr(1, 1, my_char);//lcd顯示溫度
      }
}
int readtemp()
{
      return 345;
}
void LcdWaitReady()//lcd等待
{
      unsigned char sta;
      LCD1602_DB = 0xFF;
      LCD1602_RS = 0;
      LCD1602_RW = 1;
      do{
            LCD1602_E = 1;
            sta = LCD1602_DB;
            LCD1602_E = 0;
      } while (sta & 0x80);
}

void LcdWriteCmd(unsigned char cmd)//lcd寫指令
{
      LcdWaitReady();
      LCD1602_RS = 0;
      LCD1602_RW = 0;
      LCD1602_DB = cmd;
      LCD1602_E = 1;
      LCD1602_E = 0;
}

void LcdWriteDat(unsigned char dat)//lcd寫數據
{
      LcdWaitReady();
      LCD1602_RS = 1;
      LCD1602_RW = 0;
      LCD1602_DB = dat;
      LCD1602_E = 1;
      LCD1602_E = 0;
}
void LcdSetCursor(unsigned char x, unsigned char y)//設定坐標
{
      unsigned char addr;
      if (y == 0)
      addr = 0x00 + x;
      else
      addr = 0x40 + x;
      LcdWriteCmd(addr | 0x80);
}
void LcdShowStr(unsigned char x, unsigned char y, unsigned char *str)//字符串顯示代碼
{
      LcdSetCursor(x, y);
      while (*str != '\0')
      {
            LcdWriteDat(*str++);
      }
}
void InitLcd1602()//lcd初始化
{
      LcdWriteCmd(0x38);
      LcdWriteCmd(0x0C);
      LcdWriteCmd(0x06);
      LcdWriteCmd(0x01);
}