編輯/boot/config.txt 添加
dtoverlay=dwc2
sudo modprobe libcomposite
編譯
sudo apt install libconfig-dev git cmake
git clone https://github.com/Gadgetoid/pi400kb
cd pi400kb
git submodule update --init
mkdir build
cd build
cmake ..
make
執行
sudo modprobe libcomposite
sudo ./pi400kb
Ctrl + Raspberry 本機使用和 USB 間切換
Ctrl + Shift + Raspberry 退出
#安裝相關軟體
apt install -y iptables dnsmasq hostapd
export uap0=192.168.2.1/24
export dhcpr=192.168.2.2,192.168.88.50,12h
#設定網路界面
cat >/etc/network/interfaces.d/wlan0 <<EOF
auto wlan0
allow-hotplug wlan0
iface wlan0 inet dhcp
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
EOF
cat >/etc/network/interfaces.d/uap0 <<EOF
iface uap0 inet static
address 192.168.2.1
netmask 255.255.255.0
network 192.168.2.0
broadcast 192.168.2.255
gateway 192.168.2.1
EOF
#設定 dhcpd uap0 界面
echo >>dhcpcd.conf <<EOF
interface uap0
static ip_address=${uap0}
nohook wpa_supplicant
EOF
#設定 dnsmasq 服務
cat >>/etc/dnsmasq.conf <<EOF
interface=uap0
no-dhcp-interface=lo,wlan0
bind-interfaces
server=8.8.8.8
domain-needed
bogus-priv
dhcp-range=${dhcpr}
EOF
#設定 hostapd 服務
cat >/etc/hostapd/hostapd.conf <<EOF
interface=uap0
ssid=piap
hw_mode=g
channel=11
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=2
wpa_passphrase=password
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP
EOF
echo 'DAEMON_CONF="/etc/hostapd/hostapd.conf"' >>/etc/default/hostapd
systemctl unmask hostapd
#產生執行 script
cat >/root/startap.sh <<EOF
#!/bin/bash
# Create the virtual device
/sbin/iw dev wlan0 interface add uap0 type __ap
ifup uap0
# Route all the packets coming on this interface, this will enable #us to access internet through wlan0
sysctl net.ipv4.ip_forward=1
iptables -t nat -A POSTROUTING -s 192.168.2.0/24 ! -d 192.168.2.0/24 -j MASQUERADE
systemctl start dnsmasq
systemctl start hostapd
EOF
編輯 /boot/config.txt 加入
dtoverlay=dwc2
編輯 /boot/cmdline 加入
modules-load=dwc2,g_serial
console=serial0,115200 console=tty1 root=PARTUUID=738a4d67-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait modules-load=dwc2,g_serial
執行
sudo systemctl enable getty@ttyGS0.service
Linux 登入方式
screen /dev/ttyACM0 115200
fbcpid=$(ps aux|grep [/]usr/local/bin/fbcp|awk '{print $2}');
kill $fbcpid 2>/dev/null;
case $? in 0) dtparam spi=off;dtparam spi=on;;
*) /usr/local/bin/fbcp & ;;
esac;
exit 0;
1.wiringPi updated to 2.52 for the Raspberry Pi 4B
wget https://project-downloads.drogon.net/wiringpi-latest.deb
sudo dpkg -i wiringpi-latest.deb
2.update RPi.GPIO
pip install --ignore-installed RPi.GPIO
安裝軟體
apt install usbmount -y
修改 /lib/systemd/system/systemd-udevd.service
[Service]
PrivateMounts=no
執行
systemctl daemon-reload
systemctl restart systemd-udevd
LCD 驅動程式
sudo rpi-update
wget https://raw.githubusercontent.com/geekworm-com/22LCD-script/master/screen_setup.sh
chmod +x screen_setup.sh
sudo ./screen_setup.sh
How to turn on/off backlight
sudo rpi-update
sudo apt-get install gcc python-pygame python-dev
sudo wget https://pypi.python.org/packages/source/R/RPi.GPIO/RPi.GPIO-0.5.11.tar.gz
sudo tar zxvf RPi.GPIO-0.5.11.tar.gz
cd RPi.GPIO-0.5.11
sudo python setup.py install
gpio -g mode 27 in
gpio -g mode 27 out
按鈕驅動
sudo apt-get update
sudo apt-get install libudev-dev
sudo apt-get install python-pip
sudo pip install rpi.gpio
sudo pip install python-uinput
sudo modprobe uinput
wget https://raspberrypiwiki.com/File:Python-keys.zip
參考文件
https://raspberrypiwiki.com/2.2_LCD
gpio readall
gpio -v
編輯 /lib/systemd/system/danted.service
修改 ReadOnlyDirectories=/bin /etc /lib /lib64 /sbin /usr /var
為 ReadOnlyDirectories=/bin /etc /lib -/lib64 /sbin /usr /var
重新執行
systemctl daemon-reload
/etc/init.d/danted start
git clone https://github.com/waveshare/LCD-show.git
cd LCD-show/
sudo ./LCD35-show
編輯 /boot/config
dtoverlay=waveshare35a:rotate=270
hdmi_force_hotplug=1
#max_usb_current=1
hdmi_group=0
hdmi_mode=1
hdmi_mode=87
hdmi_cvt 640 480 60 6 0 0 0
hdmi_drive=2
#display_rotate=1
#lcd_rotate=2
參考資料
https://t.codebug.vip/questions-171571.htm
https://www.raspberrypi.org/documentation/configuration/config-txt/video.md
screen /dev/ttyACM0 115200
