char serial_data; // 将从串口读入的消息存储在该变量中 int wheel_R_1 = 5; // 右轮in1对应Arduino 5号引脚 int wheel_R_2 = 6; // 右轮in2对应Arduino 6号引脚 int wheel_L_1 = 9; // 左轮in1对应Arduino 9号引脚 int wheel_L_2 = 10; // 左轮in2对应Arduino 10号引脚 void setup(){ // 配置所有控制轮的引脚为...-Go服务器开发

你的代码看起来是一个Arduino项目的一部分，主要用于通过串口控制一个小车的前进和后退。下面我将根据你的代码，继续完成这个控制逻辑，并添加对其他按键（’a’, ’s’, ’d’, ‘x’）的处理，以便实现不同的移动方向：

            // 前进
            digitalWrite(wheel_L_1, HIGH);
            digitalWrite(wheel_L_2, LOW);
            digitalWrite(wheel_R_1, HIGH);
            digitalWrite(wheel_R_2, LOW);
        } else if (serial_data == 's') {
            // 后退
            Serial.println("The car is moving backward!");
            digitalWrite(wheel_L_1, LOW);
            digitalWrite(wheel_L_2, HIGH);
            digitalWrite(wheel_R_1, LOW);
            digitalWrite(wheel_R_2, HIGH);
        } else if (serial_data == 'a') {
            // 左转
            Serial.println("The car is turning left!");
            digitalWrite(wheel_L_1, LOW);
            digitalWrite(wheel_L_2, HIGH);
            digitalWrite(wheel_R_1, HIGH);
            digitalWrite(wheel_R_2, LOW);
        } else if (serial_data == 'd') {
            // 右转
            Serial.println("The car is turning right!");
            digitalWrite(wheel_L_1, HIGH);
            digitalWrite(wheel_L_2, LOW);
            digitalWrite(wheel_R_1, LOW);
            digitalWrite(wheel_R_2, HIGH);
        } else if (serial_data == 'x') {
             // 停止
             Serial.println("The car has stopped!");
             // 停止所有轮子
             digitalWrite(wheel_L_1, LOW);
             digitalWrite(wheel_L_2, LOW);
             digitalWrite(wheel_R_1, LOW);
             digitalWrite(wheel_R_2, LOW);
        }
    }
}