Release Notes PN 93000516_F6 Digi Connect EM 82000904_F6 EOS June 23, 2006 INTRODUCTION This is a production release of firmware for the Digi Connect EM. The Digi Connect EM embedded device server module is one of the industry's most powerful and compact embedded system platforms that allows you to add web-enabled networking using a variety of connectivity options. It combines true "plug-and-play" functionality with the freedom and flexibility of complete product customization. SUPPORTED PRODUCTS Digi Connect EM ENHANCEMENTS When TCP_NODELAY is set, also change TCP_ACKDELAYTIME to zero. This addresses latency issues Added additional TCFLOW ioctls BUG FIXES Fixed a memory loss problem in telnet for messages with no data Fixed a panic problem where the file system code was not properly initializing KNOWN ISSUES It is not currently possible to configure the escape characters used by client applications (connect, telnet, and rlogin). When attempting to replace files in the file system, simply overwrite the existing version of the file rather than deleting the file first. Attempting to delete the file first defeats the internal file versioning maintained by the firmware, and can confuse your browser's cache. For the most consistent experience with the user interface, it is suggested that you clear your Internet cache. Microsoft Internet Explorer 6 Service Pack 1 (SP1) has a known problem where it displays the error message "Internet Explorer Cannot Open" when you use an HTTPS URL to access this Digi product. The following Microsoft article explains the problem: http://support.microsoft.com/default.aspx?kbid=812935 Due to certain browsers and their settings, the web interface may not appear proper after after a firmware upgrade. If this occurs, please clear your browser's cache or delete your browser's temporary files. RESETTING THE UNIT One feature of the Digi Connect EM firmware is an ability for a user to both soft reset the unit as well as reset the unit to its factory defaults. Both functions may be invoked via the "reset" button on the edge of the module, labelled SW1 on the board. * If the module is running (i.e. more than a few seconds after power on), holding the button for a second and then releasing it will soft reset the unit. * If the button is pressed for more than 10 seconds from the power on of the unit, it will prepare to reset the unit to its factory default state. Once the unit is prepared to reset, it will blink "1-5-1" on the red LED. Releasing the button will then reset the configuration. ADDITIONAL INFORMATION The configuration save and restore tools will save every configurable parameter (including IP configuration) except for some related to password authentication. ENABLING THE WEB USER INTERFACE The embedded web user interface is ALWAYS available at the following URL: http://ip-address-of-device/home.htm It is also available as the default configuration interface at the following URL: http://ip-address-of-device If your device contains the Java configuration applet it can be executed by connecting to the embedded web user interface and clicking the "Launch" button on the "Home" page under the "User Interfaces". It can be made to be the default configuration interface by clicking the "Set as Default" button on the same page. The Java Configuration Applet may remain in the unit's file system without affecting the embedded web user interface. If you would like to use the Java Configuration Applet as an alternative, simply upload the index.htm file as a file with an alternate name (e.g. applet.htm). You would then be able to use the Java Configuration Applet by accessing the following URL: http://ip-address-of-device/applet.htm HISTORY 82000904_F5 Control flashing of 1-1-1 to allow faster boot up. Added a new feature to set the initial level of GPIO output states to a user configurable setting Added new feature to allow upload of customization files using Connect Programmer. Add support for a user-configurable DHCP host name (DHCP Option 12) to the Digi Connect family of products With the latest combination of POST firmware and embedded operating system, the Digi Connect device servers now offer the ability to select whether some of their power-on self tests will be executed or skipped. The new default behavior of the POST will be to skip some of its tests, including the test of the diagnostic LED which blinks 1 - 1 - 1 before running the EOS. Skipping the tests enables the device to boot more quickly. With a CLI command in the EOS, customers will be able to choose to execute the tests, restoring the previous POST behavior. The new CLI commands are: boot postaction=display boot postaction=skip boot postaction=execute Corrected regression where file upload using the Connect Programmer was not showing up in the web UI Added logic to re-establish a TCP socket connection after a remote host becomes drops off line 82000904_E New SNMP MIBs were added including: RS-232, character, and device info MIBs. SNMP traps were added that allow the generation of SNMP traps when logins, authentication failures, network linkage, and cold startup events occur. In addition SNMP traps are supported with the alarm feature. The alarm feature allows emails and/or SNMP traps to be generated when there is a GPIO signal change or a particuliar data pattern is seen from incoming serial data. The Portbuffering feature was added that allows buffering of incoming ASCII data from the serial port. A memory leak was fixed that occured in rare situations during network data transfer. A problem with data loss on the serial port at 230400 bps was fixed. 82000904_D Connection and session management has been added to the CLI. The commands related to the manipulation of connections and/or sessions includes: who -- list connections kill -- attempt to kill a connection status -- list all sessions associated with a specified connection close -- attempt to close a session associated with a specific connection reconnect -- if we have "escaped" from a client session back to the CLI, this allows us to return control to the session connect -- from the CLI, send data to/from a serial port, escape character is ^[ telnet -- from the CLI, initiate a telnet session with a remote device, escape character is ^] rlogin -- from the CLI, initiate an rlogin session with a remote device, escape character is ~ The ability to list connections and to attempt to kill connections has been added to web interface. The ability to connect the CLI via rlogin has been added. The ability to initiate an automatic connection between a serial port and a remote network device via rlogin has been added. The ability to enable full duplex ethernet as well as auto duplex negotiation has been added. The ability to influence the way that the unit forwards data from the serial port to the network has been added. This serial over TCP forwarding allows one to insert buffering between the serial port and the network socket for a connection. This buffering allows one to "hold off" on pushing received serial data into the queue for network transmission until certain criteria are met, including the amount of data received, gaps of idle time of a certain length, and/or specific data patterns. This new buffering capability is off by default. The ADDP discovery / IP assignment service may now be completely disabled. A low-level serial configuration interface has been added. When enabled, it allows one to use the DSR modem signal to shift serial port 1 into a special mode where received data is interpreted as a set of RCI commands. Since enabling the feature causes the standard interpretation of the DSR signal to be lost, it is disabled by default. Under certain conditions, received serial data would unexpectedly get duplication of 0xFF characters in the data stream. This now only happens when character marking is explicitly requested. The units were not properly detecting RealPort server disconnects, so were not gracefully recovering from network outages for RealPort connections. 82000904_C Initial Release.