Enable Hardware Features

Some boards require some manual configuration to turn on/off certain features

In some cases, the procedure is "less than obvious", so we document some basic examples here.

H3 based Orange Pi, legacy kernel

Enable serial /dev/ttyS3 on pins 8 and 10 of the 40 pin header

Update the FEX configuration (which is compiled into a .bin) located at /boot/script.bin

Decompile .bin to .fex

cd /boot
bin2fex script.bin > custom.fex
rm script.bin # only removes symbolic link

Edit .fex file

[uart3]
uart_used = 1 ; Change from 0 to 1
uart_port = 3
uart_type = 2 ; In this case we have a 2 pin UART
uart_tx = port:PA13<3><1><default><default>
uart_rx = port:PA14<3><1><default><default>

Compile .fex to .bin

fex2bin custom.fex > script.bin

Reboot

Notice that /dev/ttyS3 appears. That is your new UART device.

893 B Raw Blame History

Enable Hardware Features

H3 based Orange Pi, legacy kernel

Enable serial /dev/ttyS3 on pins 8 and 10 of the 40 pin header

893 B

Raw Blame History