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第一個(gè)函數(shù)通過(guò)ds18b20檢測(cè)溫度然后控制加熱模塊加熱，第二個(gè)函數(shù)是DHT11函數(shù)的濕度顯示�，F(xiàn)在我想將dht11的代碼加進(jìn)來(lái)實(shí)現(xiàn)濕度顯示，我該怎么樣將兩個(gè)代碼融合，網(wǎng)上說(shuō)利用定時(shí)器，定時(shí)器和中斷代碼我都懂，但僅限于讓led燈閃爍。
DHT11函數(shù)
#include <reg52.h> //包含頭文件，一般情況不需要改動(dòng)，頭文件包含特殊功能寄存器的定義
#include <stdio.h>
#include "lcd1602.h"
#include "delay.h"
#include <DTH11.h>
#include <intrins.h>
#define uchar unsigned char
#define uint unsigned int
uchar wendu [4];
uchar sidu [4];
uchar i;
int j;
void main()
{
DHT11_delay_ms(100);
DHT11_receive();
LCD_Init(); //初始化液晶
DelayMs(20); //延時(shí)有助于穩(wěn)定
LCD_Clear(); //清屏
DHT11_delay_ms(100);
DHT11_receive();
while(1)
{
for(i=0;i<7;i++)
{
if(i<=2)
{
sidu[ i]= rec_dat[ i]; //[ i][ i]讀取濕度
}
}
LCD_DispStr(2, 0, sidu);
LCD_DispStr(5,0,"%");
LCD_DispStr(0,0,"H:");
}
}
網(wǎng)上找到的工程主函數(shù)（）
#include <reg52.h> //包含頭文件，一般情況不需要改動(dòng)，頭文件包含特殊功能寄存器的定義
#include <stdio.h>
#include "18b20.h"
#include "lcd1602.h"
#include "delay.h"
#include "pid.h"
#define ON 0
#define OFF 1
/************************* 引腳定義 *************************/
sbit BUZZER = P2^3;
sbit KEY_ADD = P3^4; //按鍵引腳定義
sbit KEY_SUB = P3^6;
sbit KEY_SET = P3^3;
sbit KEY_ENTER = P3^5;
sbit RELAY_HEAT = P2^1; //控制升溫繼電器
sbit RELAY_COOL = P2^0; //控制降溫繼電器
/************************* 變量定義 *************************/
PID_Calibration_Def xdata PID_Calibration;
PID_State_Def PID_State;
int temp; //溫度讀取
int a;
float temperature; //實(shí)際溫度
int xdata tempMin = 30; //溫度下限
int xdata tempMax = 34; //最高上限
char dis0[16]; //定義顯示區(qū)域臨時(shí)存儲(chǔ)數(shù)組
bit refreshFlag = 1; //刷新標(biāo)志
bit heatFlag = 0; //加熱啟動(dòng)標(biāo)志
bit coolFlag = 0; //制冷啟動(dòng)標(biāo)志
unsigned char setIndex = 0;
unsigned char time500ms = 0;
unsigned char PWMCnt = 0;
/************************* 函數(shù)聲明 *************************/
void Timer0_Init(void); //函數(shù)聲明
void KeyProcess(void); //按鍵處理
void Set_PID_Parameter(void); //PID參數(shù)初始化
void main(void)
{
/************************* 初始化 *************************/
Timer0_Init();
LCD_Init(); //初始化液晶
DelayMs(20); //延時(shí)有助于穩(wěn)定
LCD_Clear(); //清屏
Set_PID_Parameter();
/************************* 主循環(huán) *************************/
while (1)
{
a=50;
if (refreshFlag == 1)
{
refreshFlag = 0;
TR0 = 0;
while(!DS18B20_Start());
DS18B20_GetTemp(&temp); //讀取溫度
temperature = (float)temp * 0.0625; //溫度轉(zhuǎn)換
if (temperature >= -55)
{
sprintf(dis0,"T:%4.1f", temperature);
LCD_DispStr(0, 0, dis0);
LCD_DispOneChar(6, 0, 0xdf);
LCD_DispOneChar(7, 0, 'C');
}
PID_State.actual = temperature; //當(dāng)前溫度
TR0 = 1;
sprintf(dis0,"S:%2d", tempMax);
LCD_DispStr(10, 0, dis0);
LCD_DispOneChar(14, 0, 0xdf);
LCD_DispOneChar(15, 0, 'C');
if ( temperature > a) //高于溫度上限，或低于溫度下限
{
if (time500ms >=2) //計(jì)時(shí)1分鐘
{
BUZZER = 0; //打開(kāi)蜂鳴器
}
else
{
time500ms++;
}
}
else
{
time500ms = 0;
BUZZER = 1; //關(guān)閉蜂鳴器
}
if (temperature < tempMax)
{
heatFlag = 1;
}
if (heatFlag == 1)
{
// 增量式PID
PID_State.target = tempMax; //加熱至閾值均值
PID_State = PID_Increament(PID_Calibration, PID_State);
if (PID_State.actual == PID_State.target)
{
heatFlag = 0;
}
}
else
{
PID_State.last_error = 0;
PID_State.previous_error = 0;
PID_State.output = 0;
}
}
if (heatFlag == 1)
{
if (PWMCnt <= PID_State.output) //占空比調(diào)節(jié)
{
RELAY_HEAT = ON;
}
else if ((PWMCnt > PID_State.output)) //關(guān)閉時(shí)間段
{
RELAY_HEAT = OFF;
}
}
else
{
RELAY_HEAT = OFF;
}
KeyProcess();
}
}
void Set_PID_Parameter(void)
{
PID_Calibration.kp = 5;
PID_Calibration.ki = 1;
PID_Calibration.kd = 0.1;
PID_State.actual = 0;
PID_State.target = 35;
PID_State.integral = 0;
PID_State.last_error = 0;
PID_State.previous_error = 0;
PID_State.output = 0;
}
void KeyProcess(void)
{
if (!KEY_SET) //設(shè)置按鍵按下
{
DelayMs(5);
if (!KEY_SET)
{
setIndex++;
if (setIndex > 2)
{
setIndex = 0;
}
if (setIndex == 0)
{
LCD_DispOneChar(9, 0, ' ');
}
else if (setIndex == 1)
{
LCD_DispOneChar(9, 0, '>');
}
}
while (!KEY_SET);
}
if (!KEY_ENTER) //確認(rèn)鍵按下
{
DelayMs(5);
if (!KEY_ENTER)
{
setIndex = 0;
LCD_DispOneChar(9, 0, ' ');
}
while (!KEY_ENTER);
}
if (!KEY_ADD) //加鍵按下
{
DelayMs(180);
if (!KEY_ADD)
{
if (setIndex == 1)
{
tempMax++;
if (tempMax >= 99)
{
tempMax = tempMin + 1;
}
}
}
//while (!KEY_ADD);
if (!KEY_SUB) //減鍵按下
{
DelayMs(180);
if (!KEY_SUB)
{
if (setIndex == 1)
{
tempMax--;
if (tempMax <= 0)
{
tempMax = tempMin + 1;
}
}
}
//while (!KEY_SUB);
}
}
void Timer0_Init(void)
{
TMOD &= 0xF0; //使用模式1，16位定時(shí)器，使用"|"符號(hào)可以在使用多個(gè)定時(shí)器時(shí)不受影響
TMOD |= 0x01; //使用模式1，16位定時(shí)器，使用"|"符號(hào)可以在使用多個(gè)定時(shí)器時(shí)不受影響
TL0 = 0x00; //設(shè)置定時(shí)初值
TH0 = 0xEE; //設(shè)置定時(shí)初值 5ms
PT0 = 1; //設(shè)置高優(yōu)先級(jí)
EA = 1; //總中斷打開(kāi)
ET0 = 1; //定時(shí)器中斷打開(kāi)
TR0 = 1; //定時(shí)器開(kāi)關(guān)打開(kāi)
}
void Timer0_isr(void) interrupt 1
{
static unsigned int numCount = 0;
TL0 = 0x00; //設(shè)置定時(shí)初值
TH0 = 0xEE; //設(shè)置定時(shí)初值 5ms
numCount++;
if (numCount > 100)
{
numCount = 0;
refreshFlag = 1;
}
if (heatFlag == 1)
{
if (PWMCnt < 200)
{
PWMCnt++;
}
else
{
PWMCnt = 1; //一個(gè)周期結(jié)束
}
}
if (coolFlag == 1)
{
if (PWMCnt < 200)
{
PWMCnt++;
}
else
{
PWMCnt = 1; //一個(gè)周期結(jié)束
}
}
}
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