The installation, configuration, and usage of kermit are based on the information found on the Internet and the user experience. In linux, minicom does not work well and sometimes does not communicate with each other, minicom cannot connect to the Development Board. Therefore, we recommend using kermit as a Super Terminal. Install kernel # apt-get install ckermit to modify the configuration file configuration of kermit ------------------------------------ # vi/etc/kermit/kermrc. The following configurations are recommended when U-Boot and Linux are used: set line/dev/ttyUSB0 set speed 115200 set carrier-watch off set handshake none set flow-control none robust set file type bin set file name Character set rec pack 1000 set send pack 1000 set window 5 # Add the above settings to "/etc/kermit/kermrc #/Dev/ttyUSB0 indicates that the connection line of usb to serial port is used to connect to the development board. If you only use serial port lines to connect to the host, you need to set/dev/ttyS0 to start ---------------------------- start kermit and connect: # kermit C-Kermit> connect # Now you have successfully connected to the serial port. Switch -------------------------------------- press Ctrl + \, and then press c to jump back to kermit C-Kermit> enter c, that is, connect to the serial port