Details about the stty command are available at the following link
http://www.gnu.org/software/coreutils/manual/coreutils.html
4.2 the USB interface
The EC300 provides a USB 2.0 Host interface, which is mainly used to expand
storage devices
The EC300 supports USB storage device hotplugging.
Note
Remember to enter the sync sync command before disconnecting your USB mass storage
device to prevent data loss. When you disconnect the storage device, exit from the
mount directory.
4.3 Mount the micro SD card
The EC300 supports micro SD memory cards without hotplugging. Mount the reference
https://www.man7.org/linux/man-pages/man8/mount.8.html
4.4 CAN bus interface
The three-way CAN port of the EC300 supports the CAN bus.
4.4.1 Configure the connection CAN interface
By default, the CAN port will be initialized. If you need any other
configuration, check the CAN device using the ip link command. To check the
status of the CAN device, use the ip link command:
To configure a CAN device, use ip link set can* down to first turn off the
device