一步步教你使用云端服务器yeelink远程监控

ADC_Init(); // ADC初始化 LPC_GPIO2->FIODIR = 0x000000ff; // LED配置 LPC_GPIO0->FIODIR = 0x00; LPC_GPIO0->FIOPIN |= 0x00; while(1) { tcpclient("42.96.164.52",80 ,1); //AD转换值上传 tcpclient("42.96.164.52",80 ,2); //获取LED状态并改变开发板LED状态 rt_thread_delay(RT_TICK_PER_SECOND * 4); //延时4s } //TCP客户端实验 int tcpclient(const char* url, int port,int num) { char *recv_data; struct hostent *host; int sock, bytes_received; struct sockaddr_in server_addr; int Buf = 0; /* 通过函数入口参数url获得host地址（如果是域名，会做域名解析） */ host = gethostbyname(url); /* 分配用于存放接收数据的缓冲 */ recv_data = rt_malloc(BUFSZ); if (recv_data == RT_NULL) { rt_kprintf("No memory\n"); return; } /* 创建一个socket，类型是SOCKET_STREAM，TCP类型 */ if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) { /* 创建socket失败 */ rt_kprintf("Socket error\n"); /* 释放接收缓冲 */ rt_free(recv_data); return 1; } if(num == 1) / { Buf = ADC_Get(); Buf = (Buf * 3300)/4096; INT_CHAR(Buf); send_data1[234] = dis[0]; //更改上传数据内容即AD值 send_data1[234+1] = '.'; send_data1[234+2] = dis[0+1]; send_data1[234+3] = dis[0+2]; } /* 初始化预连接的服务端地址 */ server_addr.sin_family = AF_INET; server_addr.sin_port = htons(port); server_addr.sin_addr = *((struct in_addr *)host->h_addr); rt_memset(&(server_addr.sin_zero), 0, sizeof(server_addr.sin_zero)); /* 连接到服务端 */ while (connect(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1) { /* 连接失败 */ rt_kprintf("Connect fail!\n"); lwip_close(sock); /*释放接收缓冲 */ rt_free(recv_data); return 1; } rt_kprintf("Connect OK!\n"); if(num == 1) { /* 发送数据到sock连接 */ if(send(sock,send_data1,strlen(send_data1), 0) < 0) { /* 发送失败，关闭这个连接 */ rt_kprintf("\nSend error "); lwip_close(sock); /* 释放接收缓冲 */ rt_free(recv_data); } else { rt_kprintf("\nSend OK "); bytes_received = recv(sock, recv_data, BUFSZ - 1, 0); lwip_close(sock); /* 释放接收缓冲 */ rt_free(recv_data); } } else if(num == 2) { /* 发送数据到sock连接 */ if(send(sock,send_data2,strlen(send_data2), 0) < 0) { /* 发送失败，关闭这个连接 */ rt_kprintf("\nSend error "); lwip_close(sock); /* 释放接收缓冲 */ rt_free(recv_data); } else { rt_kprintf("\nSend OK "); /* 从sock连接中接收最大BUFSZ - 1字节数据 */ bytes_received = recv(sock, recv_data, BUFSZ - 1, 0); Buf = Search_str(recv_data,"\"value\":"); if(recv_data[Buf] == '0') LPC_GPIO2->FIOPIN &= ~0xff; //关闭LED else LPC_GPIO2->FIOPIN |= 0xff; //打开LED rt_kprintf("\n%s ",recv_data+Buf); lwip_close(sock); /* 释放接收缓冲 */ rt_free(recv_data); } } return 1; }