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
receive_interface.c
#include <pthread.h>
#include <mqueue.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include "receive_interface.h"
#include "control.h"
#include "mq_queue.h"
#include "global.h"
#include "face.h"
#include "myoled.h"
/*
接收模块:
对接收到消息做出相应处理
包括 oled 人脸识别 语言播报 GPIO 引脚状态配置
*/
static int oled_fd = -1;
typedef struct
{
int msg_len;
unsigned char*buffer;
ctrl_info_t *ctrl_info;
}recv_msg_t;
static int receive_init(void)
{
// 设备类链表添加
oled_fd = myoled_init(); // 初始化oled
face_init(); // 初始化人脸识别
return 0;
}
static void receive_final(void)
{
face_final();
if(-1 != oled_fd)
{
close(oled_fd); // 关闭oled 打开的文件
oled_fd = -1; //复位
}
}
// 处理设备 -- 比如打开灯 和风扇等
static void*handler_device(void *arg)
{
pthread_detach(pthread_self()); // 和主线程(他的父线程)分离
recv_msg_t *recv_msg = NULL;
if(NULL != arg)
{
recv_msg = (recv_msg_t *)arg;
printf("recv_len = %d\n",recv_msg->msg_len);
printf("%s|%s|%d, handler: 0x%x,0x%x,0x%x,0x%x,0x%x,0x%x\n",__FILE__,__func__,__LINE__,
recv_msg->buffer[0],recv_msg->buffer[1],recv_msg->buffer[2],recv_msg->buffer[3],recv_msg->buffer[4],recv_msg->buffer[5]);
}
// need to do something
pthread_exit(0);
}
static void* receive_get(void *arg) // 接收消息队列里面的 数据
{
printf("enter receive_get\n");
// 通过参数 初始化我们 定义的recv_msg_t 结构体
recv_msg_t *recv_msg = NULL;
unsigned char*buffer = NULL;
struct mq_attr attr;
pthread_t tid = -1;
ssize_t read_len = -1;
if(NULL != arg)
{
recv_msg = (recv_msg_t *)malloc(sizeof(recv_msg_t));
recv_msg->ctrl_info = (ctrl_info_t *)arg;// 这里实际上就获取到了mqd 和 phead(我们需要操作的struct control 链表 的头节点)
recv_msg->msg_len = 0;
recv_msg->buffer = NULL;
}
else
pthread_exit(0);
if(mq_getattr(recv_msg->ctrl_info->mqd,&attr) == -1)
{ // 获取消息队列失败 -- 异常
pthread_exit(0);
}
// 能获取到消息队列
recv_msg->buffer = (unsigned char *)malloc(attr.mq_msgsize); // 分配内存
buffer = (unsigned char *)malloc(attr.mq_msgsize);
// mq_msgsize -- 每条消息的大小
memset(recv_msg->buffer,0,attr.mq_msgsize); // 初始化
memset(buffer,0,attr.mq_msgsize); // 初始化
pthread_detach(pthread_self()); // 和主线程(他的父线程)分离
while (1)
{
read_len = mq_receive(recv_msg->ctrl_info->mqd,buffer,attr.mq_msgsize,NULL) ;
printf("%s|%s|%d, recv: 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]);
printf("%s|%s|%d: read_len = %ld\n",__FILE__,__func__,__LINE__,read_len);
if(-1 == read_len)
{// 接收失败
if(errno == EAGAIN)
{
printf("queue is empty\n");
}
else
{
break;
}
}
// 以下是接收到正常数据的情况
else if(buffer[0] == 0xAA && buffer[1] == 0x55
&&buffer[4]==0x55 && buffer[5]==0xAA)
{
recv_msg->msg_len = read_len;
memcpy(recv_msg->buffer,buffer,read_len);
// 创建线程去 处理我们的接收到的信号
pthread_create(&tid,NULL,handler_device,(void*)recv_msg);
}
}
if(NULL != recv_msg)
free(recv_msg);
if(NULL != buffer)
free(buffer);
pthread_exit(0);
}
struct control receive_control ={
.control_name = "receive",
.init = receive_init,
.final = receive_final,
.get = receive_get,
.set = NULL, //不需要实现 设置
.next = NULL
};
struct control *add_receive_to_ctrl_list(struct control *phead)
{
//头插法实现 添加链表节点
return add_interface_to_ctrl_list(phead,&receive_control);
};
receive_interface.h
#ifndef ___RECEIVE_INTERFACE_H___
#define ___RECEIVE_INTERFACE_H___
#include "control.h"
struct control *add_receive_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_create
int 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;
}
编译执行:
编译:
make
发送到arm-64平台
scp ./obj/smarthome orangepi@192.168.1.11:/home/orangepi
// 需要用到阿里云人脸识别接口，需要调用 py文件，一起传过去
scp src/face.py orangepi@192.168.1.11:/home/orangepi
执行：
sudo -E ./smarthome
可以看到我们的 hanler 函数已经接收到对的数据了，剩下的就是对这些数据的处理了，我们将在下一篇实现，让代码和关联设备们起来，进一步完善我们的功能。
