【HarmonyOS开发板试用】在Neptune上搭建http服务器【FFH】 原创 精华
dancehole
发布于 2022-5-28 10:49
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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~ |
---|---|
==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);// output is 0 PB08 control led
GpioSetDir(WIFI_IOT_GPIO_PB_09, WIFI_IOT_GPIO_DIR_INPUT);// input is PB09
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); // TCP socket
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); // 端口号,从主机字节序转为网络字节序
serverAddr.sin_addr.s_addr = htonl(INADDR_ANY); // 允许任意主机接入, 0.0.0.0
retval = bind(sockfd, (struct sockaddr *)&serverAddr, sizeof(serverAddr)); // 绑定端口
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); // 开始监听
if (retval < 0) {
printf("listen failed!\r\n");
goto do_cleanup;
}
printf("listen with %d backlog success!\r\n", backlog);
// 接受客户端连接,成功会返回一个表示连接的 socket , clientAddr 参数将会携带客户端主机和端口信息 ;失败返回 -1
// 此后的 收、发 都在 表示连接的 socket 上进行;之后 sockfd 依然可以继续接受其他客户端的连接,
// UNIX系统上经典的并发模型是“每个连接一个进程”——创建子进程处理连接,父进程继续接受其他客户端的连接
// 鸿蒙liteos-a内核之上,可以使用UNIX的“每个连接一个进程”的并发模型
// liteos-m内核之上,可以使用“每个连接一个线程”的并发模型
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();
//send http pages
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);
// 后续 收、发 都在 表示连接的 socket 上进行;
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);; // for debug
do_cleanup:
printf("do_cleanup...\r\n");
close(sockfd);
}
SERVER_TEST_DEMO(TcpServerTest);
要让开发板连接网络,需要在 net_params.h里修改配网参数
#ifndef NET_PARAMS_H
#define NET_PARAMS_H
#define PARAM_HOTSPOT_SSID "FsrLab" // your AP SSID
#define PARAM_HOTSPOT_PSK "12345678" // your AP PSK
#define PARAM_HOTSPOT_TYPE WIFI_SEC_TYPE_PSK // defined in wifi_device_config.h
#define PARAM_SERVER_ADDR "192.168.0.113" // your PC IP address
#define PARAM_SERVER_PORT 5678 //设置端口号
#endif // NET_PARAMS_H
修改my_demo/Build.gn
static_library("demo") {
sources = [
"tcp_service_test.c"
]
include_dirs = [
"//utils/native/lite/include",
"//kernel/liteos_m/components/cmsis/2.0",
"//foundation/communication/interfaces/kits/wifi_lite/wifiservice",
"//base/iot_hardware/interfaces/kits/wifiiot_lite",
]
if (board_name == "w800" || board_name == "hi3861v100") {
sources += ["wifi_connecter.c", "net_demo_ohos.c"]
}
if (board_name == "w800") {
include_dirs += [
"//vendor/winnermicro/w800/src/network/lwip2.0.3/include/",
"//vendor/winnermicro/w800/include/arch/xt804/csi_core",
"//vendor/winnermicro/w800/include/arch/xt804",
"//vendor/winnermicro/w800/include/platform",
"//vendor/winnermicro/w800/include/os",
"//vendor/winnermicro/w800/include/net",
"//vendor/winnermicro/w800/include/app",
"//vendor/winnermicro/w800/include/wifi",
"//vendor/winnermicro/w800/include",
]
}
}
import("//build/lite/config/component/lite_component.gni")
lite_component("app") {
features = [
"my_demo:demo",
]
}
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已于2022-5-28 11:04:46修改
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