198 lines
3.6 KiB
Markdown
198 lines
3.6 KiB
Markdown
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## Linux嵌入板卡自发热点连接无线网络
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### 介绍
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Linux嵌入板卡发出热点供客户端连接，客户端通过浏览器访问热点，连接到Linux嵌入板卡的热点，并进行交互。
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- 连接逻辑：
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1. 扫描Wi-Fi,并将Wi-Fi list保存为json格式,存储在本地,命名为`scaned_wifi_list.json`;
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2. 检查Wi-Fi连接状态,若已连接,则退出程序;
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3. 关闭Wi-Fi,并启动热点和web服务器,web服务器监听80端口,并提供一个页面,页面中包含Wi-Fi列表;
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4. 等待用户选择 Wi-Fi 网络并输入密码,并连接到用户选择的 Wi-Fi 网络;
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5. 如果Wi-Fi连接成功,则显示Wi-Fi连接成功页面,并提供交互页面;
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6. 如果Wi-Fi连接失败,则重新扫描Wi-Fi,并提示用户重新连接.
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- 灯光指示逻辑:
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1. 当红灯亮起时,热点开启,等待客户端连接,连接成功后,红灯熄灭;
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2. 当蓝灯亮起时,程序正常启动,如果蓝灯不亮起,则程序未启动,如果蓝灯熄灭,则已连接Wi-Fi,程序已关闭.
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### 环境准备
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#### (1) 安装依赖项：
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```
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sudo apt-get update
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sudo apt-get install -y hostapd dnsmasq
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```
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#### (2) 克隆项目到本地并安装依赖：
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```
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// 克隆项目到本地 https or ssh
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git clone http://43.132.157.186:3000/gaohz/wifi_hotpot.git
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cd wifi_hotpot
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```
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#### (3) 安装Python端环境依赖：
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```
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sudo pip install flask psutil
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```
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#### (4) 配置开机自启动服务项:
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##### (4.1) 配置WiFi热点服务项:
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1. 创建一个service文件：
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```
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sudo vim /etc/systemd/system/hotspot.service
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```
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2. 在打开的文件中，添加以下内容：
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```
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[Unit]
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Description=Hotspot Service
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After=network.target
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[Service]
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ExecPre=/bin/sleep 2
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ExecStart=create_ap wlan0 eth0 Takway-Toys --no-virt
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User=root
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[Install]
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WantedBy=multi-user.target
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```
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请确保将`wlan0`替换为你的无线网卡接口，将`eth0`替换为你的有线网卡接口，`Takway-Toys`替换为你想要设置的热点名称。
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3. 保存并关闭文件。
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4. 重新加载systemd配置：
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```
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sudo systemctl daemon-reload
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```
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5. 启用并启动Hotspot service：
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```
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# sudo systemctl enable hotspot.service
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sudo systemctl start hotspot.service
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```
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6. 如果需要停止Hotspot service，可以使用以下命令：
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```
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sudo systemctl stop hotspot.service
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```
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7. 如果需要查看Hotspot service的状态：
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```
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sudo systemctl status hotspot.service
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```
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##### (4.2) 配置WiFi热点管理服务项:
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- 编辑
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```
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sudo vim /etc/systemd/system/wifi_hotspot.service
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```
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- 内容：
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```
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[Unit]
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Description=WiFi Hotspot Wrapper
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After=network.target
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Wants=network.target
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[Service]
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Type=oneshot
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ExecStart=/bin/bash /home/orangepi/wifi_hotpot/start_hotpots.sh
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WorkingDirectory=/home/orangepi/wifi_hotpot
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User=root
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[Install]
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WantedBy=default.target
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```
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- 配置
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```
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sudo systemctl daemon-reload
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sudo systemctl enable wifi_hotspot.service
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# sudo systemctl disable wifi_hotspot.service
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```
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- 开始（测试）
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```
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sudo systemctl start wifi_hotspot.service
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# sudo systemctl stop wifi_hotspot.service
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```
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- 查看输出
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```
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sudo systemctl status wifi_hotspot.service
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```
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#### (5) 配置热点信息:
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- 手动连接`http://192.168.12.1/`
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- 连接成功后，输入用户名密码，即可进入交互界面。
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## 其他参考命令
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- 创建热点:
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```
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sudo systemctl start hotspot.service
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```
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- 关闭热点:
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```
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sudo systemctl stop hotspot.service
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```
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- 开启Wi-Fi连接:
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```
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nmcli dev wifi connect Innoxsz-Public password innox2023
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```
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- 断开Wi-Fi连接:
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```
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nmcli dev disconnect wlan0
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```
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- 扫描Wi-Fi:
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```
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nmcli dev wifi
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```
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- 检查Wi-Fi连接状态:
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```
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nmcli dev status
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```
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### create_ap
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```
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sudo create_ap wlan0 eth0 Takway-Toys --no-virt
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+``` |