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IBOX3588 | User Manual
27
The following is a summary of the commands for the two serial connectors in different
modes.
RS232 mode
UART4
Transmit data
gpioset gpiochip7 4=0
gpioset gpiochip7 5=1
echo "
Test string
" > /dev/ttyS4
Receive data
gpioset gpiochip7 4=0
gpioset gpiochip7 5=1
cat /dev/ttyS4
UART7
Transmit data
gpioset gpiochip7 6=0
gpioset gpiochip7 7=1
echo "
Test string
" > /dev/ttyS7
Receive data
gpioset gpiochip7 6=0
gpioset gpiochip7 7=1
cat /dev/ttyS7
RS485 mode
UART4
Transmit data
gpioset gpiochip7 4=1
gpioset gpiochip7 5=0
echo "
Test string
" > /dev/ttyS4
Receive data
gpioset gpiochip7 4=0
gpioset gpiochip7 5=0
cat /dev/ttyS4
UART7
Transmit data
gpioset gpiochip7 6=1
gpioset gpiochip7 7=0
echo "
Test string
" > /dev/ttyS7
Receive data
gpioset gpiochip7 6=0
gpioset gpiochip7 7=0
cat /dev/ttyS7