GUF-Yocto-jethro-9.0-r7707-0
i.MX6
User Manual
3
Accessing the target system
A Garz & Fricke hardware platform can be accessed from a host system using the following technologies:
Serial console
console access over RS-232
Telnet
console access over Ethernet
SSH
encrypted console access and file transfer over Ethernet
TFTP
file downoad over Ethernet
SFTP
file upload and download over Ethernet
Each of the following chapters describes one of these possibilities and, where applicable, gives a short example
of how to use it. For all examples, the Garz & Fricke target system is assumed to have the IP address
192.168.1.1
.
3.1
Serial console
The easiest way to access the target is via the serial console. There are two way to connect the serial console:
RS232 on Molex Micro-Fit connector
Virtual console over USB
To use the RS232 connection, connect the first RS232 port of your target system using to a COM port of your PC
or a USB-to-RS232 converter using a null modem cable.
For a working connection, the signals
TXD
and
RXD
have to be connected
cross-over
in the same way like a
null modem cable does. The location of the RS232 connector and the necessary pins can be found in
[
I
Figure
,
[
I
Figure 2]
below. If you received your system as part of a
starter kit
, this kit should also contain a cable to
be used for this connection.
Figure 1: Location of the RS232 connector on a 7" device (upper) and on a 5" device (lower)
Pin
Name
Description
1
GND
Ground
2
RS232_TXD1
Port#1: Transmit data (Output)
3
RS232_RXD1
Port#1: Receive data (Input)
4
RS232_RTS1
Port#1: Request-to-send (Output)
5
RS232_CTS1
Port#1: Clear-to-send (Input)
10
