單片機(jī)dht11在仿真時(shí)，通過按鈕轉(zhuǎn)到調(diào)濕度上限和濕度下限畫面時(shí)，顯示光標(biāo)亂竄的情況

ID:941024 · 發(fā)表于 2021-6-20 18:28

由于本論壇禁止直接求程序,禁止伸手黨,所以向大家請(qǐng)教一下大致的實(shí)現(xiàn)方法與思路,理清頭緒后我自己去實(shí)現(xiàn),謝謝大家

用的51單片機(jī)和DHT11做的控制濕度系統(tǒng)。
現(xiàn)在出現(xiàn)問題是：在仿真時(shí)，通過按鈕轉(zhuǎn)到調(diào)濕度上限和濕度下限畫面時(shí)，顯示光標(biāo)亂竄的情況。
希望大佬們幫我看看！謝謝！

ID:941024 · 發(fā)表于 2021-6-20 22:50

這個(gè)是LCD的代碼
#include<reg51.h>
#include<intrins.h>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include <absacc.h>
#include <math.h>
#define U8INT unsigned    char
#define U16INT unsigned       int
#define U32INT unsigned    long
#define LCD_Port P0
//定義LCD1602端口

sbit EN=P1^3; //使能
sbit RW=P2^6; //讀寫
sbit RS=P1^2; //數(shù)據(jù)/命令選擇
U8INT humidity;
U8INT temperature;
U8INT Mode;
bit bdata humid,dry,BJ;

void delay_ms(U16INT x)    //延時(shí)
{
   U8INT i=0;
   while(x--)
   {
      for(i=0;i<120;i++);
   }
}
void Busy_Wait() //忙等待
{
U8INT LCD_Status=0x00;
do
{
LCD_Port=0xFF;
EN=0;RS=0;RW=1;
EN=1;_nop_();
LCD_Status=LCD_Port ;
EN=0;_nop_();
}
while(LCD_Status&0x80);
}
void LCD_Write_CMD(U8INT cmd)    //寫入LCD的命令
{
Busy_Wait();
EN=0;RS=0;RW=0;
LCD_Port=cmd;
EN=1;_nop_();
EN=0;_nop_();

// delay_ms(10); //
}
void LCD_Write_Data(U8INT dat)    //寫入LDE的數(shù)據(jù)
{
Busy_Wait();
EN=0;RS=1;RW=0;
LCD_Port=dat;
EN=1;_nop_();
EN=0;_nop_();
Busy_Wait();
// delay_ms(10);    //
}
void LCD_Init()    //初始化LCD
{
LCD_Write_CMD(0x38);//設(shè)置顯示模式：16x2顯示，5x7點(diǎn)陣，8位數(shù)據(jù)接口
LCD_Write_CMD(0x0c);//開顯示，不顯示光標(biāo)，光標(biāo)不閃爍
LCD_Write_CMD(0x06);//寫一個(gè)字符后地址指針加1，且光標(biāo)加1，整屏顯示不移動(dòng)
LCD_Write_CMD(0x01);//清屏

}
void L1602_char(U8INT hang,U8INT lie,U8INT sign) //行、列、單個(gè)字符
{
U8INT a;
if(hang == 1) a = 0x80;    //上行首地址
if(hang == 2) a = 0xc0;    //下行首地址
a = a + lie - 1; //從第零位加(lie-1)位開始顯示
LCD_Write_CMD(a);
LCD_Write_Data(sign);
}
void L1602_string(U8INT hang,U8INT lie,U8INT *p) //行、列、字符串
{
U8INT a;
if(hang == 1) a = 0x80; //
if(hang == 2) a = 0xc0;    //
a = a + lie - 1;
LCD_Write_CMD(a);
while(1)
{
if(*p == '\0') break;    //從P字符串第一個(gè)字符打到最后一個(gè)字符
LCD_Write_Data(*p);    //每次循環(huán)加一個(gè)P，‘\0’是加在字符串后的結(jié)束標(biāo)志
p++;    //    當(dāng)碰到結(jié)束標(biāo)志就break結(jié)束循環(huán)
}
}
void L1602_int(U8INT hang, U8INT lie, int num) //行、列、整形 / /顯示整形的濕度
{
U16INT temp;
U16INT gewei,shiwei,baiwei,sign;    //geshibai
if (num >= 0)
sign = 0;
else
sign = 1;
temp = abs(num);    //絕對(duì)值
baiwei = temp / 100;    // 百
temp = temp - baiwei*100;
shiwei = temp / 10;    // 十
gewei = temp - shiwei*10;    // 個(gè)
num = abs(num);
if (num>=100)
{

   L1602_char(hang, lie+2, shiwei+48);    //ASCII碼48起0
   L1602_char(hang, lie+3, gewei+48);
}
else if (num>=10)
{
   if (sign == 1)
   L1602_char(hang, lie+1, ' ');
   L1602_char(hang, lie+2, shiwei+48);
   L1602_char(hang, lie+3, gewei+48);
}
else
{
   if (sign == 1)
   L1602_char(hang, lie+1, ' ');
   else
   L1602_char(hang, lie+2, ' ');
   L1602_char(hang, lie+3, gewei+48);
}
}
void display()    //顯示濕度狀態(tài)
{
if(Mode==0)
{
L1602_int(1,3,humidity);
if(humid==1&&dry==0)
{L1602_string(2,1,"It's very humid!");BJ=1;}
else if(humid==0&&dry==1)
{L1602_string(2,1," It's very dry! ");BJ=1;}
else if(humid==0&&dry==0)
{L1602_string(2,1," It's normal! ");BJ=0;}
}
}

ID:941024 · 發(fā)表于 2021-6-20 22:50

這個(gè)是DHT11的代碼
#include<reg51.h>
#include<intrins.h>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include <absacc.h>
#include <math.h>
#define U8INT unsigned char
#define U16INT unsigned int
sbit Led_jiashi=P3^4;//定義濕度控制功能
sbit Led_qushi=P3^3;
sbit DATA= P1^7; //定義DHT11數(shù)據(jù)口
sbit buzz= P3^5;
sbit SCL = P1^0; //定義24C02數(shù)據(jù)口
sbit SDA = P1^1;
U8INT U8checkdata_temp;
U8INT U8RH_data_H_temp;
U8INT U8RH_data_L_temp;
U8INT U8T_data_H_temp; //
U8INT U8T_data_L_temp; //
U8INT U8RH_data_H;       //高8位濕度整數(shù)
U8INT U8RH_data_L;    //低8位濕度小數(shù)
U8INT U8T_data_H;
U8INT U8T_data_L;
U8INT U8checkdata; //8位數(shù)據(jù)檢查數(shù)據(jù)
U8INT U8temp;    //8位數(shù)據(jù)寄存(用來對(duì)比檢差數(shù)據(jù)
U8INT U8FLAG; // 用來計(jì)數(shù)溢出等待
U8INT U8comdata; //8位數(shù)據(jù)寄存（用來存濕度數(shù)據(jù)
bit bdata FlagStartRH;//定義一個(gè)位變量flag
extern bit humid,dry,BJ; // 0或者1
void Timer0_Init()    //初始化定時(shí)器0
{
ET0 = 1;       //允許定時(shí)器0中斷
TMOD = 0x11;    //定時(shí)器工作方式選擇
TL0 = 0xFF;
TH0 = 0x4B;    //定時(shí)器賦予初值
TR0 = 1;       //啟動(dòng)定時(shí)器
}

void Timer0_ISR (void) interrupt 1 using 0    //定時(shí)器0中斷
{    //第0組寄存器
U8INT RHCounter;
TL0 = 0xFF;
TH0 = 0x4B;    //定時(shí)器賦予初值
RHCounter++;
if(RHCounter%10==0&&BJ==1)
buzz=!buzz;
else if(BJ==0)
buzz=1;
//每1秒鐘啟動(dòng)一次溫濕度轉(zhuǎn)換
if (RHCounter >= 20)
{
   FlagStartRH = 1;
   RHCounter = 0;
}
}

void DELAY (U16INT t)    //    延時(shí)
{
while(t!=0)
t--;
} //SCL 時(shí)鐘線    //SDA 雙向控制線
void IICStart(void)    //開始
{
   SCL=0;       //SCL為高電平,SDA由高跳低，開始傳送數(shù)據(jù)
   DELAY(1);
   SDA=1; SCL=1; DELAY(1);
   SDA=0; DELAY(1); //脈沖表示應(yīng)答信號(hào)，無反應(yīng)為故障
   SCL=0; //鉗住I2C總線，準(zhǔn)備發(fā)送或接收數(shù)據(jù)
}

void IICStop(void)    // 結(jié)束
{
   SDA=0;SCL=1; DELAY(1);    //SCL為高電平,SDA由低跳高，結(jié)束傳送數(shù)據(jù)
   SDA=1; DELAY(1);
   SCL=0; //發(fā)送I2C總線結(jié)束信號(hào)
}
void SEND0(void)      //發(fā)送數(shù)據(jù)函數(shù)
{ //sda為0時(shí)，傳輸狀態(tài)，scl由高變低
SDA=0;
SCL=1;
DELAY(1);
SCL=0;
}

void SEND1(void)
{    //sda為1時(shí)，空閑狀態(tài)，scl由高變低
SDA=1;
DELAY(1);
SCL=1;
DELAY(1);
SCL=0;
}
void  Delay_10us(void)    //延時(shí)10毫秒
{
U8INT i;
i--;
i--;
i--;
i--;
i--;
i--;
}
void Delay1(U16INT j)
{
U8INT i;
for(;j>0;j--)
{
for(i=0;i<27;i++);
}
}
bit Check_Ack(void) //返回信號(hào)
{
U8INT errtime=250;
DELAY(1);
SCL=1;
DELAY(1);
CY=SDA;
while(CY)
{
errtime--;
CY=SDA;
if (!errtime)
{
IICStop();
return 1;
}
}
DELAY(1);
SCL=0;
return 0;
}
void Write_byte(U8INT dat)
{
U8INT i;
for(i=0;i<8;i++)
{
if((dat<<i)&0x80)
SEND1();
else
SEND0();
}
}

U8INT Read_byte(void)
{
U8INT i,temp=0;
for(i=0;i<8;i++)
{
      SDA=1;
      SCL=1;
      DELAY(1);
if(SDA==1)
{
temp=temp<<1;
temp=temp|0x01;
}
else
temp=temp<<1;
   SCL=0;
   }
   return temp;
}
U8INT rdeeprom(U8INT addr)
{
      U8INT temp=0;
bit flag=0;
IICStart();
Write_byte(0xa0);
      Check_Ack();
Write_byte(addr);
Check_Ack();
IICStart();
Write_byte(0xa1);
Check_Ack();
temp=Read_byte();
SEND1();
IICStop();
      return temp;
}

void wrteeprom(U8INT addr,U8INT dat)
{
   IICStart();
Write_byte(0xa0);
Check_Ack();
Write_byte(addr);
Check_Ack();
Write_byte(dat);
Check_Ack();
IICStop();
}

void Data_Init()      //數(shù)據(jù)初始化
{
Led_qushi  = 1;          //qushi
Led_jiashi = 1;         //jiashi

}
void  COM(void) //存8位數(shù)據(jù)
{
U8INT i;
for(i=0;i<8;i++)
{
          U8FLAG=2;
   while((!DATA)&&U8FLAG++);
Delay_10us();    //yan時(shí)30us
Delay_10us();
Delay_10us();
    U8temp=0;
      if(DATA)U8temp=1;    //30us后當(dāng)DHT11信號(hào)為為高，收到的數(shù)據(jù)為1 否則為0
      U8FLAG=2;
while((DATA)&&U8FLAG++); //超時(shí)則跳出for循環(huán)
   if(U8FLAG==1)break; //判斷數(shù)據(jù)位是0還是1 如果高電平高過預(yù)定0高電平值則數(shù)據(jù)位為 1
U8comdata<<=1;    //左移1位
   U8comdata|=U8temp;       //0
}
}
U8INT RH(void)    //工作DH11
{

DATA=0;    //主機(jī)拉低18ms
Delay1(180);  //原來為5
DATA=1; //再拉高電平  主機(jī)延時(shí)40us 不然會(huì)亂碼
Delay_10us();
Delay_10us();
Delay_10us();
Delay_10us();
DATA=1;    //主機(jī)設(shè)為輸入判斷從機(jī)響應(yīng)信號(hào)
if(!DATA)    //T !       //判斷從機(jī)是否有低電平響應(yīng)信號(hào) 如不響應(yīng)則跳出，響應(yīng)則向下運(yùn)行
{
      U8FLAG=2;
      while((!DATA)&&U8FLAG++); //判斷從機(jī)是否發(fā)出 80us 的低電平響應(yīng)信號(hào)是否結(jié)束
      U8FLAG=2;
      while((DATA)&&U8FLAG++); //判斷從機(jī)是否發(fā)出 80us 的高電平如發(fā)出則進(jìn)入數(shù)據(jù)接收狀態(tài)
      //數(shù)據(jù)接收狀態(tài)
      COM();
      U8RH_data_H_temp=U8comdata;
      COM();
      U8RH_data_L_temp=U8comdata;
      COM();
U8T_data_H_temp=U8comdata;    //    必須要有，不然檢驗(yàn)不了數(shù)據(jù)
      COM();
      U8T_data_L_temp=U8comdata; //
      COM();
      U8checkdata_temp=U8comdata;
      DATA=1;
      U8temp=(U8T_data_H_temp+U8T_data_L_temp+U8RH_data_H_temp+U8RH_data_L_temp);    //數(shù)據(jù)校驗(yàn) ？？？？
      if(U8temp==U8checkdata_temp)
      {
      U8RH_data_H=U8RH_data_H_temp;
      U8RH_data_L=U8RH_data_L_temp;
   U8T_data_H=U8T_data_H_temp;
      U8T_data_L=U8T_data_L_temp;
      U8checkdata=U8checkdata_temp;
      }
return 1;
}
else //傳感器不響應(yīng)    沒有檢測到低電位所以不響應(yīng)
{
   return 0;
}
}

ID:941024 · 發(fā)表于 2021-6-20 22:51

這個(gè)是主函數(shù)的代碼
#include<reg51.h>
#include<intrins.h>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include <absacc.h>
#include <math.h>
#define U8INT unsigned char
#define U16INT unsigned    int
#define U32INT unsigned    long int
sbit Key_SET = P2^0; //定義三個(gè)設(shè)置按鍵
sbit Key_ADD = P2^1;
sbit Key_SUB = P2^2;
sbit Key_OK  = P2^3;
sbit Led_jiashi=P3^4;//定義濕度控制功能
sbit Led_qushi=P3^3;

extern Mode;
extern  humidity;
char HH,HL;
extern U8RH_data_H; //高8位濕度整數(shù)
extern U8RH_data_L;    //低8位濕度小數(shù)
extern void L1602_string(U8INT hang,U8INT lie,U8INT *p);
extern void L1602_char(U8INT hang,U8INT lie,U8INT sign);
extern void L1602_int(U8INT hang, U8INT lie, int num);
extern void LCD_Write_Data(U8INT dat);
extern void LCD_Write_CMD(U8INT cmd);
extern void LCD_Init();
extern void display();
extern void wrteeprom(U8INT addr,U8INT dat);
extern void IICStart(void);
extern void IICStop(void);
extern void Timer0_Init();
extern void Timer0_ISR (void) ; //    interrupt 1 using 0
extern void SEND0(void);
extern void SEND1(void);
extern void  Delay_10us(void)    ;
extern void Delay1(U16INT j);
extern void Write_byte(unsigned char dat) ;
extern void Data_Init();
extern void  COM(void) ;
extern bit Check_Ack(void);
extern void Delay1(U16INT j);
extern void Data_Init() ;
U8INT Read_byte(void)  ;
U8INT RH(void) ;
U8INT rdeeprom(U8INT addr);
extern bit FlagStartRH,humid,dry,BJ;

void KEY()    //設(shè)置按鍵
{
if(Key_SET==0)
{
Delay1(200);
//解決不了問題LCD_Write_CMD(0x01);
if(Key_SET==0) //一開始是0
{
Mode++;
if(Mode==1)    //后加一
{
L1602_string(1,1," HH: % HL:  %");    //初始顯示
L1602_int(1,4,HH);
L1602_int(1,12,HL);
LCD_Write_CMD(0x80+6);
LCD_Write_CMD(0x0f);    //閃爍
}
else if(Mode>=2)
{    //2

LCD_Write_CMD(0x80+14);
LCD_Write_CMD(0x0f);
}
else if(Mode>=3)
{    //循環(huán)條件
Mode=1;
LCD_Write_CMD(0x80+6);
LCD_Write_CMD(0x0f);
}
while(!Key_SET);
}
}
else if(Key_ADD==0) //增加
{
Delay1(100);
if(Key_ADD==0)
{
if(Mode==1)
{
HH++;
if(HH>=100)
HH=99;
L1602_int(1,4,HH);
LCD_Write_CMD(0x80+6);
}
else if(Mode==2)
{
HL++;
if(HL>=HH)
HL=HH-1;
L1602_int(1,12,HL);
LCD_Write_CMD(0x80+14);
}
while(!Key_ADD);
}
}
else if(Key_SUB==0)
{
Delay1(100);
if(Key_SUB==0)
{
if(Mode==1)
{
HH--;
if(HH<=HL)
HH=HL+1;
L1602_int(1,4,HH);
LCD_Write_CMD(0x80+6);
}
else if(Mode==2)
{
HL--;
if(HL<=0)
HL=0;
L1602_int(1,12,HL);
LCD_Write_CMD(0x80+14);
}
while(!Key_SUB);
}
}
if(Key_OK==0&&Mode!=0)
{
Delay1(100);
if(Key_OK==0)
{
L1602_string(1,1,"Hum: %       ");
L1602_string(2,1,"Good environment");
Mode=0;
wrteeprom(0,HH);
Delay1(20);
wrteeprom(1,HL);
Delay1(20);
LCD_Write_CMD(0x0c); //xia
while(Key_OK==0);
}
}
}

void main()
{
U16INT i, j, testnum;
EA = 0; //di wai  gao nei
Timer0_Init();
Data_Init();
EA = 1;
LCD_Init();
L1602_string(1,1,"Welcome Humidity");
L1602_string(2,1,"Control System! ");
   for (i=0;i<500;i++)
   for (j=0;j<500;j++)
   {;}
L1602_string(1,1,"             ");
L1602_string(2,1,"             ");
L1602_string(1,1,"Hum:  %       ");
L1602_string(2,1,"Good environment");
HH=rdeeprom(0);
Delay1(20);
HL=rdeeprom(1);
Delay1(20);
while(1)
{

   if (FlagStartRH == 1)    //濕度轉(zhuǎn)換標(biāo)志檢查
   {
      TR0 = 0;
         testnum = RH();
   FlagStartRH = 0;
   TR0 = 1;
   humidity = U8RH_data_H;    //讀出濕度，只取整數(shù)部分



   if(Mode==0) //濕度控制
   {
if (humidity > HH)
{
Led_qushi = 0;
humid=1;
Led_jiashi = 1;
dry=0;

}
else if(humidity<HL)
{
Led_jiashi = 0;
dry=1;
Led_qushi = 1;
humid=0;

}
else
{
Led_qushi=1;
Led_jiashi=1;
humid=0;
dry=0;
}
   }
}
display();
KEY();
}
}

ID:941024 · 發(fā)表于 2021-6-21 17:14

有大佬嗎，暖一下

ID:941024 · 發(fā)表于 2021-6-24 00:16

問題還有一個(gè)：跳轉(zhuǎn)到控制臺(tái)的時(shí)候，濕度SUM:60會(huì)一直在lcd顯示屏

ID:748788 · 發(fā)表于 2021-6-24 16:07

程序有沒有上真機(jī)測試？應(yīng)該以真機(jī)為準(zhǔn)。

ID:941024 · 發(fā)表于 2021-6-28 23:49

wwh2382 發(fā)表于 2021-6-24 16:07
程序有沒有上真機(jī)測試？應(yīng)該以真機(jī)為準(zhǔn)。

用的仿真

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