4. UART Usage¶

4.1. Description¶

EXT-iCore-3576Q38 use UART11 for RS485, which is /dev/ttyS11 in system. Extended interface using UART8 for common uart,which is /dev/ttyS8 in system.

Interfaces:

_images/usage_uart_interface.jpg

_images/usage_uart_interface2.jpg

4.2. RS485 Usage¶

# close echo
sudo stty -F /dev/ttyS11 -echo
# transmit
sudo echo "firefly uart test..." > /dev/ttyS11
# receive
sudo cat /dev/ttyS11