Digi Connect ME 9210 Bedienungsanleitung
Digi Connect ME 9210
Linux: serial port 2 for JTAG modules
Digi Customizing Platform Code In Digi Embedded Linux
Copyright 2009 Digi International Page 2/8
V1.0
Document History
Date
Version
Change Description
08/05/2009
V1.0
Initial entry/outline
Table of Contents
Document History ............................................................................................................... 2
Table of Contents ................................................................................................................ 2
1Problem Description ................................................................................................... 3
2Requirements .............................................................................................................. 3
3Software Setup ............................................................................................................ 3
4Hardware Setup ........................................................................................................... 7
5Testing......................................................................................................................... 7
Digi Customizing Platform Code In Digi Embedded Linux
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1 Problem Description
The Digi Connect ME 9210 module with JTAG has only one serial line (port A of
the NS9210 processer) connected.
If you want to activate the second serial line on the development board “P2 Serial
Port 2”, follow the instructions below. Click here for source files.
Note: a kernel compiled for the modules with JTAG connectors, using second
serial line on board, might not startup on modules without JTAG connector.
2 Requirements
To try the example in this document you need:
Digi Connect ME 9210 module with Linux (DC-ME-Y402-LX).
Digi Embedded Linux (DEL) 5.0 or above development environment.
For DEL 5.0 you need to have installed the latest patches via the package manager.
With DEL 5.1 it should work out of the box.
The Digi Connect ME development board.
You can get everything together in a Digi Connect ME 9210 Linux JumpStart Kit:
DC-ME-9210-LX
3 Software Setup
Install Digi Embedded Linux (DEL) 5.0 or higher, apply latest patches with the
Package Manager.
Create a new Digi EL Kernel/Rootfs/U-Boot Project for Platform Digi Connect
ME 9210, but select only Kernel as project components:
Digi Customizing Platform Code In Digi Embedded Linux
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Configure the project (right click on the project an select configure)
Digi Customizing Platform Code In Digi Embedded Linux
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Select Linux Kernel Configuration, Type->NS9xxx Implementations->Digi
Connect ME 9210 on Devboard->Serial Port C
(CONFIG_CME9210JS_SERIAL_PORTC):
Select Digi Connect ME 9210 on Devboard in the Linux Kernel Configuration
System Type. Enable Serial port A with RX/TX only
(CONFIG_CME9210JS_SERIAL_PORTA_RXTX):
Digi Customizing Platform Code In Digi Embedded Linux
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Select Device Drivers, Character devices, Serial drivers, Digi NS921x serial port
support, Console on Digi NS921x serial
(CONFIG_SERIAL_NS921X_CONSOLE):
Build and install the project
Digi Customizing Platform Code In Digi Embedded Linux
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V1.0
4 Hardware Setup
Turn off the development board.
Connect the power cable.
Plug Connect ME 9210 module to the development board.
Connect Ethernet cable to Connect ME 9210 to your development PC (for
updating firmware).
Connect a serial null modem cable (pins 2 and 3 crossed) to your host computer
(e.g. COMA is the CONSOLE). Plug the cable into Serial Port A of the Digi
development board.
Connect a serial null modem cable (pins 2 and 3 crossed) to your host computer
(e.g. COMB is the serial Port 2). Plug the cable into Serial Port B of the Digi
development board.
Set the devboard SW3 dip switches to any hardware handshake you have enabled
in the kernel config
5 Testing
Run the new build kernel on the Digi Connect ME 9210 module (e.g. update the image in
flash build in section 3).
Start a terminal program with 38400 8N1 on your development host on COM1 (console)
and COM2 (serial port 2). Boot Linux on the Digi Connect ME 9210 module. On the
serial console (COM1), configure the serial interface:
# stty -F /dev/ttyNS2 38400
Send some test string from the ConnectME 9210 serial port A (console) to the
development host (COM2 serial port B):
# echo “Hello World” >/dev/ttyNS2
Check if the test string is received by your terminal program on COM2.
Send some test string from the development host via the serial port 2 to the Digi Connect
ME 9210. First start a program on the Connect ME 9210 which is able to receive the
chars, e.g.:
# cat /dev/ttyNS2
Enter some string on the COM2 serial port 2 terminal program of your development host
(press Enter, if everything is configured in line mode which is the default) and check if it
is received on the Connect ME 9210 console.
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