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2) If the HDMI display has image output after starting the linux system, it means that the
HDMI interface is in normal use
3) In the absence of network and serial port, you can use HDMI display, and then
connect the mouse and keyboard to control the development board
3.13. WIFI connection test
Please do not modify the /etc/network/interfaces configuration file to connect to the
WIFI. Connecting to the WIFI network in this way will cause problems.
3.13.1. The server version image connects to WIFI by command
When the development board is not connected to the Ethernet or HDMI display, but
only the serial port, it is recommended to use the commands demonstrated in this section
to connect to the WIFI network. Because nmtui can only display characters in some serial
port software (such as minicom), the graphical interface cannot be displayed normally. Of
course, if the development board is connected to an Ethernet or HDMI display, you can
also use the commands demonstrated in this section to connect to the WIFI network.
1) Log in to the linux system first, there are three ways
a. If the development board is connected to the network cable, you can log in to the
Linux system remotely via SSH
b. If the debug serial port is connected to the development board, you can use the
serial terminal to log in to the Linux system
c. If you connect the development board to the HDMI display, you can log in to the
Linux system through the HDMI display terminal
1) First use the nmcli dev wifi command to scan the surrounding WIFI hotspots
root@orangepi:~# nmcli dev wifi
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