智能家居3 - 实现烟雾报警模块

这一模块的思路和前面的语言控制模块很相似，差别只是调用TCP 去控制

废话少说，放码过来

增添/修改代码

smoke_interface.c


#include <pthread.h>
#include <wiringPi.h>
#include <stdio.h>#include "smoke_interface.h"
#include "control.h"
#include "mq_queue.h"
#include "global.h"
#include <netinet/tcp.h> // 设置 tcp 心跳 的参数#define SMOKE_PIN   6 // 烟雾报警模块接的引脚
#define SMOKE_MODE INPUTstatic int s_fd = -1;static int  smoke_init(void)
{printf("%s|%s|%d\n",__FILE__,__func__,__LINE__);pinMode(SMOKE_PIN, SMOKE_MODE); // 引脚 和 模式配置return 0;
}static void smoke_final(void) 
{// do nothing
}static void* smoke_get(void *arg)
{// AA 55 45 00  55 AA -->  45 00 -->触发警报int status = HIGH; //低电平有效 -- 默认设置为高电平int switch_status = 0;  // 报警开关 -- 默认设置为不开 -- 0ssize_t byte_send = -1;unsigned char buffer[6] = {0xAA,0x55,0x00,0x00,0x55,0xAA};mqd_t mqd = -1;ctrl_info_t * ctrl_info = NULL; if(NULL != arg)ctrl_info = (ctrl_info_t*)arg;if(NULL != ctrl_info)mqd = ctrl_info->mqd;      if((mqd_t)-1 == mqd){pthread_exit(0);  }pthread_detach(pthread_self());  // 父子线程分离printf("%s thread start.\n",__func__);while(1){status = digitalRead(SMOKE_PIN); // 读取当前引脚状态if(LOW == status) //  探测到烟雾 -- 发生报警{switch_status = 1; // 打开报警器开关buffer[2] = 0x45;buffer[3] = 0x00;// 低电平触发警报 --//蜂鸣器是低电平触发 --> 我们这里把buffer 修改得与beep匹配，方便与他产生联系printf("%s|%s|%d,  0x%x,0x%x,0x%x,0x%x,0x%x,0x%x\n",__FILE__,__func__,__LINE__,buffer[0],buffer[1],buffer[2],buffer[3],buffer[4],buffer[5]);byte_send = mq_send(mqd, buffer, 6,0); // 向消息队列里面发送数据 -- 接收到后语言模块会识别播报 - 火灾警报if (-1 == byte_send){continue;}}else if(HIGH == status && 1 == switch_status) // 未探测到烟雾，并且报警器开关还没关闭 -- 关闭报警器开关{switch_status = 0; //  关闭报警器开关buffer[2] = 0x45;buffer[3] = 0x01;//警报结束printf("%s|%s|%d,  0x%x,0x%x,0x%x,0x%x,0x%x,0x%x\n",__FILE__,__func__,__LINE__,buffer[0],buffer[1],buffer[2],buffer[3],buffer[4],buffer[5]);byte_send = mq_send(mqd, buffer, 6,0);if (-1 == byte_send){continue;}}sleep(5);}pthread_exit(0); // 退出线程
}struct  control smoke_control ={.control_name = "smoke",.init = smoke_init,.final = smoke_final,.get = smoke_get,.set = NULL, //不需要实现 设置.next = NULL
};struct control *add_smoke_to_ctrl_list(struct control *phead)
{return add_interface_to_ctrl_list(phead,&smoke_control);}

smoke_interface.h

#ifndef ___SMOKE_INTERFACE_H___
#define ___SMOKE_INTERFACE_H___#include "control.h"
struct control *add_smoke_to_ctrl_list(struct control *phead);#endif

修改的main.c

#include <stdio.h>
#include <pthread.h>
#include <stdlib.h>
#include <wiringPi.h>#include "control.h"
#include "mq_queue.h"
#include "voice_interface.h"
#include "socket_interface.h"
#include "smoke_interface.h"
#include "receive_interface.h"
#include "global.h"// msg_queue_createint main() {pthread_t thread_id;struct control *control_phead = NULL;struct control *pointer = NULL;ctrl_info_t *ctrl_info = NULL;ctrl_info = (ctrl_info_t *)malloc(sizeof(ctrl_info_t));ctrl_info->ctrl_phead = NULL;ctrl_info->mqd = -1;int node_num = 0; // 统计节点数if(-1 == wiringPiSetup())// 初始化 wiringPi 库{perror("wiringPi Init");return -1;}// 创建消息队列ctrl_info->mqd = msg_queue_create();if(-1 == ctrl_info->mqd)// 创建消息队列失败{printf("%s|%s|%d, mqd= %d\n",__FILE__,__func__,__LINE__,ctrl_info->mqd);return -1;}//  头插法插入 ， so 头一直在变化ctrl_info->ctrl_phead = add_voice_to_ctrl_list(ctrl_info->ctrl_phead);ctrl_info->ctrl_phead = add_tcpsocket_to_ctrl_list(ctrl_info->ctrl_phead);ctrl_info->ctrl_phead = add_smoke_to_ctrl_list(ctrl_info->ctrl_phead);ctrl_info->ctrl_phead = add_receive_to_ctrl_list(ctrl_info->ctrl_phead);pointer = ctrl_info->ctrl_phead;while(NULL!=pointer) // 对所有控制结构体初始化，并且统计节点数{if(NULL != pointer->init){printf("%s|%s|%d   control_name = %s\n",__FILE__,__func__,__LINE__,pointer->control_name);pointer->init();}pointer = pointer->next;node_num++; // 统计节点数}// 根据节点的总数 --> 创建对应数目的线程pthread_t *tid = (pthread_t *)malloc(sizeof(int) *node_num);pointer = ctrl_info->ctrl_phead;for(int i=0;i<node_num;++i)//遍历所有节点{if(NULL != pointer->get){printf("%s|%s|%d   control_name = %s\n",__FILE__,__func__,__LINE__,pointer->control_name);pthread_create(&tid[i],NULL,(void *)pointer->get,(void *)ctrl_info); // 传入这个结构体参数，方便同时调用多组线程里面的API}pointer = pointer->next;}for(int i=0;i<node_num;++i){pthread_join(tid[i],NULL);}for(int i=0;i<node_num;++i){if(NULL != pointer->final)pointer->final(); // 接打开的使用接口关闭pointer = pointer->next;}msq_queue_final(ctrl_info->mqd);if(NULL != ctrl_info)free(ctrl_info); // 这个是malloc 堆区申请的内存 -->  需要手动的释放if(NULL != tid)free(tid);return 0;
}