Communicate with your board from a Linux Host (Basics)

RS232 configuration

We suggest you to use Kermit as Terminal emulator for RS232 connection. Minicom was sadly reported to have problems when communicating with U-Boot.

Kermit installation

• On Ubuntu:

apt-get install gkermit

or use Synaptic graphical package manager.

• On Fedora:

rpm -q gkermit

Kermit configuration

• Edit/Create .kermrc file in your $HOME directory and put it in:

set line /dev/ttyS0
set speed 115200
set carrier-watch off
set handshake none
set flow-control none
robust
set file type bin
set file name lit
set rec pack 1000
set send pack 1000
set window 5
set transmit linefeed on

• In this example, we assume that your serial port is ttyS0 (first serial port). Change this to correct value if necessary.
• If you use an USB<->Serial converter then serial port would surely be named like that: ttyUSB0

Kermit usage

• To launch it:

kermit -c

• To switch from terminal mode to command mode:

CTRL + \ + c

• To switch from command mode to terminal mode:

C-Kermit>c

TFTP server

In order to send your files (uBoot, Linux, rootfs ...) with higher speed to the armadeus board, you can use a tftp server. Once the server started, the files located in the server shared directory (or current directory) will be accessible from the U-Boot TFTP client.

Server configuration

• Select the directory in which the files you want to sent to the Armadeus board are located ("Browse" button)
• Set the server address if necessary (must be your Host IP address)

If the Armadeus board has been correctly configured (host address, netmask ...) the transfer will start immediately.

Links

• Kermit Homepage