下载镜像 2021-03-04-raspios-buster-armhf.zip
wifi自启动 /boot/wpa_supplicant.conf 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 country=CN ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev update_config=1 network={ ssid="wifi-name" psk="wifi-passwd" key_mgmt=WPA-PSK priority=1 } network={ ssid="SUSTech-wifi" key_mgmt=NONE priority=2 }
1 2 3 4 5 6 7 8 9 10 11 12 ssid:网络的ssid psk:密码 priority:连接优先级，数字越大优先级越高（不可以是负数） scan_ssid:连接隐藏WiFi时需要指定该值为1 key_mgmt: list of accepted authenticated key management protocols ---支持的协议列表 WPA-PSK = WPA pre-shared key (this requires 'psk' field) ---一般都是这个，这就包括了WPA、WPA2开始的那些方式 WPA-EAP = WPA using EAP authentication ---这个就是WEP开头的，猜的，求验证 IEEE8021X = IEEE 802.1X using EAP authentication and (optionally) dynamically generated WEP keys NONE = WPA is not used; plaintext or static WEP could be used ---这个是开放的，没密码，联通、电信之类的就这个 WPA-PSK-SHA256 = Like WPA-PSK but using stronger SHA256-based algorithms WPA-EAP-SHA256 = Like WPA-EAP but using stronger SHA256-based algorithms If not set, this defaults to: WPA-PSK WPA-EAP ---如果未设置，默认支持WAP、WEP开头那些
ssh ssh自启动 找树莓派的ip 方法一 通过比较树莓派开机前后ping通的ip地址的不同获取
command before RaspberryPi Connect to WiFi RaspberryPi Power On & Connect to WiFi
command after RaspberryPi Connect to WiFi 1 ping_ip_2=$(arp -a) && diff <(echo "$ping_ip_1") <(echo "$ping_ip_2") && unset ping_ip_1 ping_ip_2
从不同的ip地址中找到树莓派的ip
方法二 使用sent-ip
ssh链接树莓派 frp frp frp-v0.34.2 frp_0.34.2_linux_arm.tar.gz
解压到/etc/frp
修改frpc.ini文件 1 2 3 4 5 6 7 8 9 10 11 12 13 [common] server_addr = xx.xx.xx.xx server_port = 7000 [ssh] type = tcp local_ip = 127.0.0.1 local_port = 22 remote_port = 6000 [web1] type = http local_port = 5000 remote_port = 5000 custom_domains = xx.xx.xx.xx
自启动 把systemd文件夹下的frpc.service，放到/etc/systemd/system下
1 2 3 4 5 6 7 8 ln -s /etc/frp/frpc /usr/bin/frpc chmod +x /usr/bin/frpc chmod 754 systemd/frpc.service cp systemd/frpc.service /etc/systemd/system/ systemctl start frpc systemctl enable frpc systemctl status frpc ps -ef|grep frpc
内网测速 设置开机串口启动 修改config.txt文件 最后加上三行
1 2 3 dtoverlay=pi3-miniuart-bt start_x=1 gpu_mem=128
修改cmdline.txt文件 删除rootwait之后的内容
wget https://dl.orbbec3d.com/dist/astra/v2.1.2/AstraSDK-v2.1.2-Linux-arm.zip https://dl.orbbec3d.com/dist/openni2/OpenNI_2.3.0.66.zip
watchdog 支持的是bcm2835_wdt。可以通过指令查询
1 2 3 4 pi@raspberrypi:~ $ sudo cat /lib/modules/$(uname -r)/modules.builtin | grep wdt kernel/drivers/watchdog/bcm2835_wdt.ko pi@raspberrypi:~ $ sudo cat /var/log/kern.log* | grep watchdog Jan 31 02:17:02 raspberrypi kernel: bcm2835-wdt bcm2835-wdt: Broadcom BCM2835 watchdog timer
安装生效步骤 安装watchdog驱动 1 2 3 4 5 6 pi@raspberrypi:~ $ sudo apt update [... output ...] pi@raspberrypi:~ $ sudo apt install watchdog [... output ...] pi@raspberrypi:~ $ sudo systemctl enable watchdog [... output ...]
修改配置 /boot/config.txt 在后面增加一配置项
修改配置文件 /etc/watchdog.conf 里面还有温度等配置可修改
1 2 3 4 max-load-1 = 24 watchdog-device = /dev/watchdog realtime = yes priority = 1
重启 测试是否有效，控制台中输入以下指令