使用51单片机驱动TM1668显示DHT11温湿度的简单代码程序

以下是使用51单片机驱动TM1668显示DHT11温湿度的简单代码程序： ```c #include<reg52.h> #include<intrins.h> #define uchar unsigned char #define uint unsigned int sbit DHT11=P3^5; sbit STB=P1^0; sbit CLK=P1^1; sbit DIO=P1^2; uchar code table[]={ 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f, 0x77,0x7c,0x39,0x5e,0x79,0x71 }; //共阴数码管0~9,A~F的段码 void delay(uint z) //延时函数 { uint x,y; for(x=z;x>0;x--) for(y=110;y>0;y--); } void write_byte(uchar dat) //写入一个字节 { uchar i; for(i=0;i<8;i++) { CLK=0; if(dat&0x01) DIO=1; else DIO=0; dat>>=1; CLK=1; } } void write_com(uchar com) //写入命令 { STB=0; write_byte(com); STB=1; } void write_data(uchar addr,uchar dat) //写入数据 { write_com(0x44); STB=0; write_byte(0xc0|addr); write_byte(dat); STB=1; } void init() //初始化 { write_com(0x88); //亮度全调 write_com(0x40); //点地址方式 write_com(0xc0); //从第一位开始显示 } void display(uchar x,uchar y) //显示温度和湿度 { uchar wendu,shidu; write_data(y,table[x/10]); //显示十位 write_data(y+1,table[x%10]); //显示个位 write_data(y+2,0x38); //显示小数点 write_data(y+3,table[shidu/10]); //显示十位 write_data(y+4,table[shidu%10]); //显示个位 } void main() { uchar h,l,check; init(); while(1) { DHT11=1; delay(1); DHT11=0; //起始信号 delay(18); DHT11=1; delay(1); if(!DHT11) //判断DHT11响应信号是否存在 { while(!DHT11); while(DHT11); h=0; l=0; h|=DHT11<<7; h|=DHT11<<6; h|=DHT11<<5; h|=DHT11<<4; h|=DHT11<<3; h|=DHT11<<2; h|=DHT11<<1; h|=DHT11; l|=DHT11<<7; l|=DHT11<<6; l|=DHT11<<5; l|=DHT11<<4; l|=DHT11<<3; l|=DHT11<<2; l|=DHT11<<1; l|=DHT11; check=0; check|=DHT11<<7; check|=DHT11<<6; check|=DHT11<<5; check|=DHT11<<4; check|=DHT11<<3; check|=DHT11<<2; check|=DHT11<<1; check|=DHT11; if(h+l==check) display(h,l); //判断数据是否正确 } } } ``` 请注意，上述代码仅供参考，实际使用时需要根据具体硬件和软件环境进行适当修改。