Linux虚拟机VMware Workstation中安装VMware Tools

您好，我可以回答您的问题。以下是代码示例： #include <reg52.h> #include <stdio.h> sbit LED = P1^0; // LED连接的IO口 sbit DQ = P3^7; // DS18B20连接的IO口 unsigned char code table[] = { // 数码管显示表 0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f, 0x6f }; void delay(unsigned int i) { // 延时函数 while(i--); } void init_ds18b20() { // 初始化DS18B20 unsigned char i; DQ = 1; delay(5); DQ = 0; delay(500); DQ = 1; delay(50); i = DQ; delay(500); } void write_ds18b20(unsigned char dat) { // 写入一个字节 unsigned char i; for(i=0; i<8; i++) { DQ = 0; DQ = dat & 0x01; delay(5); DQ = 1; dat >>= 1; } } unsigned char read_ds18b20() { // 读取一个字节 unsigned char i, dat = 0; for(i=0; i<8; i++) { DQ = 0; dat >>= 1; DQ = 1; if(DQ) dat |= 0x80; delay(5); } return dat; } void start_ds18b20() { // 启动温度转换 init_ds18b20(); write_ds18b20(0xcc); write_ds18b20(0x44); } int read_temperature() { // 读取温度值 unsigned char tl, th; int temp; init_ds18b20(); write_ds18b20(0xcc); write_ds18b20(0xbe); tl = read_ds18b20(); th = read_ds18b20(); temp = th; temp <<= 8; temp |= tl; return temp; } void display_temperature(int temp) { // 显示温度值 unsigned char i, j, k; unsigned char code disp[] = { // 数码管连接的IO口 0xfe, 0xfd, 0xfb, 0xf7 }; unsigned char buf[4]; sprintf(buf, "%.1f", temp / 16.0); for(i=0; i<4; i++) { j = buf[i] - &#39;0&#39;; k = table[j]; P2 = disp[i]; P0 = k; delay(100); } } void main() { int temp, set_temp = 25; unsigned char i; while(1) { start_ds18b20(); temp = read_temperature(); display_temperature(temp); if(temp > set_temp * 16) { // 温度高于设定值 for(i=0; i<6; i++) { // LED闪烁3秒 LED = ~LED; delay(500); } } } }