C++语言在嵌入式系统中的各个功能模块应用案例分析

#include <iostream>
#include <wiringPi.h>

int main() {
    wiringPiSetupGpio();
    pinMode(17, OUTPUT);
    
    while (true) {
        char cmd;
        std::cout << "请输入1（开）或0（关）: ";
        std::cin >> cmd;
        
        if (cmd == '1') {
            digitalWrite(17, HIGH);
        }
        else if (cmd == '0') {
            digitalWrite(17, LOW);
        }
        else {
            std::cout << "输入无效，请重新输入！" << std::endl;
        }
    }
    
    return 0;
}

#include <iostream>
#include <chrono>
#include <thread>

int main() {
    auto start = std::chrono::steady_clock::now();
    
    while (true) {
        auto end = std::chrono::steady_clock::now();
        auto duration = std::chrono::duration_cast<std::chrono::seconds>(end - start).count();
        
        std::cout << "已经运行了" << duration << "秒！" << std::endl;
        
        std::this_thread::sleep_for(std::chrono::seconds(1));
    }
    
    return 0;
}

#include <iostream>
#include <wiringPi.h>
#include <wiringSerial.h>

int main() {
    int fd = serialOpen("/dev/ttyAMA0", 9600);
    
    if (fd == -1) {
        std::cout << "串口打开失败！" << std::endl;
        return -1;
    }
    
    while (true) {
        if (serialDataAvail(fd)) {
            char data = serialGetchar(fd);
            std::cout << "接收到的数据: " << data << std::endl;
        }
    }
    
    return 0;
}