1. Purpose
The article provides information that is useful when starting with ckermit.
2. Introduction
C-Kermit is a combined network and serial communication software package offering a consistent, transport-independent, cross-platform approach to: connection establishment, terminal sessions, file transfer, file management, character-set translation, numeric and alphanumeric paging, automation of file transfer and management, dialogs, and communication tasks through its built-in scripting language.
In this article, we focus only on file-transfer between a host PC and an STMicroelectronics board via a serial console.
3. Installation on your target
Kermit is installed on the STMicroelectronics images via the ckermit package
4. Installation on your PC
The ckermit package MUST be installed on your PC to perform file tranfers via a serial console
On ubuntu
sudo apt-get install ckermit
 Information
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| Depending of Linux Distibution and Distribution version, ckermit tools can be not present. Please in this case search the solution on Linux forum, search engine to find a solution adapted to your setup |
5. Getting started
- generate a configuration file for kermit
Content of kermit_ttyACM0.cfg
set line /dev/ttyACM0 set speed 115200 set carrier-watch off set flow-control none set prefixing all set parity none set stop-bits 1 set modem none
| Information
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| ttyACM0 corresponds to the serial port on Linux connected to the board. It can vary depending on the type of serial connection (ttyS0, ttyUSB0,... |
- Download a file from a board to your PC:
Get the file /etc/hosts from the board:
kermit kermit_ttyACM0.cfg -g /etc/hosts
- Upload a file from your PC to a board:
Put the local file myfile.txt on the board at specific location: /home/root/
kermit kermit_ttyACM0.cfg -s myfile.txt
| Information
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To close the kermit session properly, don't forget to send the following command:
kermit kermit_ttyACM0.cfg -f |
6. Tips
- Serial port already in use
If you encounter this kind of message (or if the command line is stuck, and displays random characters)
kermit kermit_ttyACM0.cfg -s /etc/hosts Locked by process 24320 can't open device
Please kill/close the serial console application (generaly Minicom on Linux)