Chip provide cdc_amc driver，default is /ttyACM0

1. Product chip device access on LINUX system
2. Use command lsmod，Check if there cdc acm driver module, if the system already exists in the drive,
3. As  below：
4. Use command lsusb，Inquire USB device ，Corresponding display device VID and PID,
5. 
6. Use su Command to switch to ROOT permissions
7. Query device mapping out of the port number /dev/ttyACM0
8. 
9. Use the cat command to test reading
10.