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用户手册对应的I/O
工厂模式实现继电器灯控制
代码段

• controlDevice.h（设备设备）
• main.c（主函数）
• bathroomLight.c（浴室灯）
• bedroomLight.c（卧室灯）
• restaurantLight.c（餐厅灯）
• livingroomLight.c（客厅灯）
• 编译
• 运行结果

用户手册对应的I/O

工厂模式实现继电器灯控制

代码段

controlDevice.h（设备类）

#include <wiringPi.h>					//wiringPi库
#include <stdio.h>
#include <stdlib.h>struct Devices                          //设备类
{char deviceName[128];               //设备名int status;                         //状态int pinNum;							//引脚号int (*Init)(int pinNum);			//“初始化设备”函数指针int (*open)(int pinNum);			//“打开设备”函数指针int (*close)(int pinNum);			//“关闭设备”函数指针int (*readStatus)(int pinNum);		//“读取设备状态”函数指针  为火灾报警器准备int (*changeStatus)(int status);	//“改变设备状态”函数指针struct Devices *next;
};struct Devices* addBathroomLightToDeviceLink(struct Devices *phead);		//“浴室灯”加入设备链表函数声明 2
struct Devices* addBedroomLightToDeviceLink(struct Devices *phead);	        //“卧室灯”加入设备链表函数声明 8
struct Devices* addRestaurantLightToDeviceLink(struct Devices *phead);		//“餐厅灯”加入设备链表函数声明 13
struct Devices* addLivingroomLightToDeviceLink(struct Devices *phead);		//“客厅灯”加入设备链表函数声明 16

main.c（主函数）

#include <stdio.h>
#include <string.h>
#include <errno.h>
#include "controlDevice.h"// 按名称查找设备
struct Devices *findDeviceByName(char *name, struct Devices *phead)
{struct Devices *tmp =phead;if (phead == NULL) {return NULL;}else {while (tmp != NULL) {if (strcmp(tmp->deviceName,name)==0) {return tmp;}tmp = tmp->next;}return NULL;}
}int main()
{char name[128];struct Devices *tmp = NULL;// 初始化wiringPi库if (wiringPiSetup() == -1) {fprintf(stdout, "Unable to start wiringPi: %s\n", strerror(errno));return 1;}// 定义初始设备链表头struct Devices *pdeviceHead = NULL;// “浴室灯”加入设备链表pdeviceHead = addBathroomLightToDeviceLink(pdeviceHead);// “卧室灯”加入设备链表pdeviceHead = addBedroomLightToDeviceLink(pdeviceHead);// “餐厅灯”加入设备链表pdeviceHead = addRestaurantLightToDeviceLink(pdeviceHead);// “客厅灯”加入设备链表pdeviceHead = addLivingroomLightToDeviceLink(pdeviceHead);// 无限循环，接受用户输入while (1){printf("Input:\n");scanf("%s", name);tmp = findDeviceByName(name, pdeviceHead);// 如果找到设备if (tmp != NULL) {tmp->Init(tmp->pinNum); // 先初始化tmp->open(tmp->pinNum); // 打开设备}}return 0;
}

bathroomLight.c（浴室灯）

#include "controlDevice.h"			//自定义设备类的文件int bathroomLightInit(int pinNum)           //C语言必须要传参，JAVA不用，可直接访问变量的值
{pinMode(pinNum,OUTPUT);					//配置引脚为输出模式digitalWrite(pinNum,HIGH);				//引脚置高电平，断开继电器
}int bathroomLightOpen(int pinNum)
{digitalWrite(pinNum,LOW);				//引脚置低电平，闭合继电器
}int bathroomLightClose(int pinNum)
{digitalWrite(pinNum,HIGH);				//引脚置高电平，断开继电器
}int bathroomLightStatus(int status)
{}struct Devices bathroomLight = {			//定义浴室灯（对象）.deviceName = "bathroomLight",			//名字.pinNum = 2,							//香橙派 2号(wPi)引脚.Init = bathroomLightInit,				//指定初始化函数.open = bathroomLightOpen,				//指定“打开灯”函数.close = bathroomLightClose,			//指定“关闭灯”函数.changeStatus = bathroomLightStatus
};struct Devices* addBathroomLightToDeviceLink(struct Devices *phead)		//浴室灯（对象）加入设备链表函数
{if (phead == NULL) {return &bathroomLight;}else {bathroomLight.next = phead;  //以前的头变成.nextphead = &bathroomLight;      //更新头return phead;}
}

bedroomLight.c（卧室灯）

#include "controlDevice.h"int bedroomLightInit(int pinNum)            //C语言必须要传参，JAVA不用，可直接访问变量的值
{pinMode(pinNum,OUTPUT);					//配置引脚为输出模式digitalWrite(pinNum,HIGH);				//引脚置高电平，断开继电器
}int bedroomLightOpen(int pinNum)
{digitalWrite(pinNum,LOW);				//引脚置低电平，闭合继电器
}int bedroomLightClose(int pinNum)
{digitalWrite(pinNum,HIGH);				//引脚置高电平，断开继电器
}int bedroomLightStatus(int status)
{}struct Devices bedroomLight = {			//定义卧室灯（对象）.deviceName = "bedroomLight",		//名字.pinNum = 8,						//香橙派 8号(wPi)引脚.Init = bedroomLightInit,			//指定初始化函数.open = bedroomLightOpen,			//指定“打开灯”函数.close = bedroomLightClose,			//指定“关闭灯”函数.changeStatus = bedroomLightStatus
};struct Devices* addBedroomLightToDeviceLink(struct Devices *phead)		//卧室灯（对象）加入设备链表函数
{if (phead == NULL) {return &bedroomLight;}else {bedroomLight.next = phead;  //以前的头变成.nextphead = &bedroomLight;      //更新头return phead;}
}

restaurantLight.c（餐厅灯）

#include "controlDevice.h"			//自定义设备类的文件int restaurantLightInit(int pinNum)         //C语言必须要传参，JAVA不用，可直接访问变量的值
{pinMode(pinNum,OUTPUT);					//配置引脚为输出模式digitalWrite(pinNum,HIGH);				//引脚置高电平，断开继电器
}int restaurantLightOpen(int pinNum)
{digitalWrite(pinNum,LOW);				//引脚置低电平，闭合继电器
}int restaurantLightClose(int pinNum)
{digitalWrite(pinNum,HIGH);				//引脚置高电平，断开继电器
}int restaurantLightStatus(int status)
{}struct Devices restaurantLight = {			//定义餐厅灯（对象）.deviceName = "restaurantLight",		//名字.pinNum = 13,							//香橙派 13号(wPi)引脚.Init = restaurantLightInit,			//指定初始化函数.open = restaurantLightOpen,			//指定“打开灯”函数.close = restaurantLightClose,			//指定“关闭灯”函数.changeStatus = restaurantLightStatus
};struct Devices* addRestaurantLightToDeviceLink(struct Devices *phead)		//餐厅灯（对象）加入设备链表函数
{if (phead == NULL) {return &restaurantLight;}else {restaurantLight.next = phead;  //以前的头变成.nextphead = &restaurantLight;      //更新头return phead;}
}

livingroomLight.c（客厅灯）

#include "controlDevice.h" //自定义设备类的文件int livingroomLightInit(int pinNum) // C语言必须要传参，JAVA不用，可直接访问变量的值
{pinMode(pinNum, OUTPUT);	// 配置引脚为输出模式digitalWrite(pinNum, HIGH); // 引脚置高电平，断开继电器
}int livingroomLightOpen(int pinNum)
{digitalWrite(pinNum, LOW); // 引脚置低电平，闭合继电器
}int livingroomLightClose(int pinNum)
{digitalWrite(pinNum, HIGH); // 引脚置高电平，断开继电器
}int livingroomLightStatus(int status)
{
}struct Devices livingroomLight = {	 // 定义客厅灯（对象）.deviceName = "livingroomLight", // 名字.pinNum = 16,					 // 香橙派 16号(wPi)引脚.Init = livingroomLightInit,	 // 指定初始化函数.open = livingroomLightOpen,	 // 指定“打开灯”函数.close = livingroomLightClose,	 // 指定“关闭灯”函数.changeStatus = livingroomLightStatus};struct Devices *addLivingroomLightToDeviceLink(struct Devices *phead) // 客厅灯（对象）加入设备链表函数
{if (phead == NULL) {return &livingroomLight;}else {livingroomLight.next = phead; // 以前的头变成.nextphead = &livingroomLight;	  // 更新头return phead;}
}

编译

gcc *.c -lwiringPi -lwiringPiDev -lpthread -lm -lcrypt -lrt

运行结果