文中相关设备来源于51CTO 鸿蒙技术社区【开发板漂流计划】
开发板型号为[润和蓝牙开发板],搭载Neptune模组,w800芯片，开发板相关介绍略。
| 感谢51cto |
和润和的支持~ |
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注：本文只进行功能介绍与代码实现，具体原理见设计文档（点此跳转）
（：使用neptune开发板参加了一个小比赛
效果演示
视频见附件
实现了语音操控开、关灯
实现方法简介
我们知道浏览器是http的客户端,目的是连接远程的http服务器,然后服务器返回浏览器数据.浏览器接收数据解析数据之后展现出来.我们看到的外在表现就是,浏览器访问一个url,然后就得到相应的web页面.
所以我们需要在Neptune上部署一个http服务器。
为了实现tcp通信，这里使用socket库搭建，代码如下：
文件见附件（可直接编译，由于某些原因智能在ohos1.1版本下运行，后续会更新ohos3.x版本）
代码实现
tcp_service_demo1
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include "net_demo_common.h"
#include "net_common.h"
#include "cmsis_os2.h"
#include "ohos_init.h"
#include "wifiiot_gpio.h"
#include "wifiiot_gpio_ex.h"
#include "wifiiot_gpio_w800.h"
#define LED_TASK_STACK_SIZE 1024
#define LED_TASK_PRIO 25
static void my_demo()
{
printf("\n\n\nhello!\n\n\n\n");
GpioInit();
GpioSetDir(WIFI_IOT_GPIO_PB_08, WIFI_IOT_GPIO_DIR_OUTPUT);
GpioSetDir(WIFI_IOT_GPIO_PB_09, WIFI_IOT_GPIO_DIR_INPUT);
IoSetPull(WIFI_IOT_GPIO_PB_09, WIFI_IOT_GPIO_ATTR_PULLHIGH);
GpioRegisterIsrFunc(WIFI_IOT_GPIO_PB_09, WIFI_IOT_INT_TYPE_EDGE, WIFI_IOT_GPIO_EDGE_FALL_LEVEL_LOW, NULL, NULL);
GpioSetOutputVal(WIFI_IOT_GPIO_PB_08, WIFI_IOT_GPIO_VALUE0);
printf("\n\ndone\n\n\n\n");
}
static char request[128] = "";
void TcpServerTest(unsigned short port)
{
printf("*********************TCP server test *****************\n");
int retval = 0;
int backlog = 1;
int sockfd = socket(AF_INET, SOCK_STREAM, 0);
int connfd = -1;
struct sockaddr_in clientAddr = {0};
socklen_t clientAddrLen = sizeof(clientAddr);
struct sockaddr_in serverAddr = {0};
serverAddr.sin_family = AF_INET;
serverAddr.sin_port = htons(port);
serverAddr.sin_addr.s_addr = htonl(INADDR_ANY);
retval = bind(sockfd, (struct sockaddr *)&serverAddr, sizeof(serverAddr));
if (retval < 0) {
printf("bind failed, %ld!\r\n", retval);
goto do_cleanup;
}
printf("bind to port %d success!\r\n", port);
retval = listen(sockfd, backlog);
if (retval < 0) {
printf("listen failed!\r\n");
goto do_cleanup;
}
printf("listen with %d backlog success!\r\n", backlog);
connfd = accept(sockfd, (struct sockaddr *)&clientAddr, &clientAddrLen);
if (connfd < 0) {
printf("accept failed, %d, %d\r\n", connfd, errno);
goto do_cleanup;
}
printf("accept success, connfd = %d!\r\n", connfd);
printf("client addr info: host = %s, port = %d\r\n", inet_ntoa(clientAddr.sin_addr), ntohs(clientAddr.sin_port));
my_demo();
const char buffer[9162]="HTTP/1.1 200 OK\r\nDate: Fri, 22 May 2009 06:07:21 GMT\r\nContent-Type: text/html; charset=UTF-8\r\n\r\n<html><head></head><body style="text-align:center;font-size: larger;"><h1>Hello Openharmony!</h1><div style="background-color:green ;height: 20%;color:white;">开灯</div><div style="background-color:red ;height: 20%;">关灯</div></body></html>";
send(connfd,buffer,sizeof(buffer),0);
retval = recv(connfd, request, sizeof(request), 0);
if (retval < 0) {
printf("recv request failed, %ld!\r\n", retval);
goto do_disconnect;
}
printf("recv request{%s} from client done!\r\n", request);
retval = send(connfd, request, strlen(request), 0);
if (retval <= 0) {
printf("send response failed, %ld!\r\n", retval);
goto do_disconnect;
}
printf("send response{%s} to client done!\r\n", request);
do_disconnect:
osDelay(500);
close(connfd);
osDelay(500);;
do_cleanup:
printf("do_cleanup...\r\n");
close(sockfd);
}
SERVER_TEST_DEMO(TcpServerTest);
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要让开发板连接网络，需要在 net_params.h里修改配网参数
修改my_demo/Build.gn
修改build.gn:
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