Question

系统使用的模块有AT89C51单片机+LCD1602显示屏+光敏电阻模块+ADC0832+小灯。编写完整程序当检测到光照强度低于设定阈值小灯就会亮起。其中cs,clk,dl,模数分别接1.5/1.6/1.7，小灯接2.3

Answer 1

问：系统使用的模块有AT89C51单片机+LCD1602显示屏+光敏电阻模块+ADC0832+小灯。编写完整程序当检测到光照强度低于设定阈值小灯就会亮起。其中cs,clk,dl,模数分别接1.5/1.6/1.7，小灯接2.3

答：以下是使用AT89C51单片机+LCD1602显示屏+光敏电阻模块+ADC0832+小灯的详细程序： #include #define LCD1602_DB P0 //LCD1602的数据口sbit LCD1602_RS = P2^0; //LCD1602的命令/字符选择端口sbit LCD1602_RW = P2^1; //LCD1602的读写命令选择端口sbit LCD1602_E = P2^2; //LCD1602的使能端口sbit lightSensorOut = P1^0; //光敏电阻模块的输出端口

答：sbit ADC0832_CS = P1^5; //ADC0832的片选端口sbit ADC0832_CLK = P1^6; //ADC0832的时钟端口sbit ADC0832_DIO = P1^7; //ADC0832的输入/输出端口sbit led = P2^3; //小灯的输出端口unsigned char disBuffer[] = "Bright:"; //在LCD1602上显示的字符串unsigned char result = 0; //保存光敏电阻模块测量的光照强度值//函数声明

答：void delayMs(unsigned int n);void initLCD1602();void writeLCD1602Cmd(unsigned char cmd);void writeLCD1602Dat(unsigned char dat);void readLightSensor();void initADC0832();unsigned char readADC0832(unsigned char ch);void main(){ initLCD1602(); //初始化LCD1602 initADC0832(); //初始化ADC0832 while(1) {

答：readLightSensor(); //读取光敏电阻模块的输出值 if(result < 50) //如果光照强度低于设定阈值，小灯亮起 { led = 0; } else { led = 1; } }}//延时函数，n为要延时的毫秒数void delayMs(unsigned int n){ unsigned int i, j; for(i = 0; i < n; i++) { for(j = 0; j < 125; j++); }}

答：//LCD1602初始化函数void initLCD1602(){ delayMs(15); //上电后延时15ms以上 writeLCD1602Cmd(0x38); //显示模式设置：16*2，5*7点阵，8位数据接口 writeLCD1602Cmd(0x0c); //显示控制：开显示，不显示光标，不闪烁 writeLCD1602Cmd(0x06); //光标/显示移动设置：光标右移，字符不移动 writeLCD1602Cmd(0x01); //清屏，将地址指针指向起始位置}//LCD1602发送命令

答：void writeLCD1602Cmd(unsigned char cmd){ LCD1602_RS = 0; //选择命令端口 LCD1602_RW = 0; //选择写入模式 LCD1602_E = 1; LCD1602_DB = cmd; //将命令写入数据口 delayMs(1); //延时 LCD1602_E = 0;}//LCD1602发送数据void writeLCD1602Dat(unsigned char dat){

答：LCD1602_RS = 1; //选择数据端口 LCD1602_RW = 0; //选择写入模式 LCD1602_E = 1; LCD1602_DB = dat; //将数据写入数据口 delayMs(1); //延时 LCD1602_E = 0;}//读取光敏电阻模块输出的模拟信号，转换成数字信号，并保存在result中

答：void readLightSensor(){ unsigned char lightValue = 0; ADC0832_CS = 0; //片选信号有效 ADC0832_DIO = 1; //启动转换，将输入信号置高 delayMs(1); ADC0832_CLK

答：亲您自己组合一下

答：太长了