Advanced Vehicle Technologies, Inc. - AVT-440 Firmware
ADVANCED VEHICLE TECHNOLOGIES, Inc.

AVT-440
Firmware Version Descriptions
Updated: 3 December 2018

Version 0001
Release date: Never released. Very early testing only.

Version 0002
Release date: 4 October 2018
Initial release including fully operational functional "Read ID" function.
Manual is in 'Draft' status - but is available.

Version 0003
Release date: 3 November 2018
Taken from version: 0002.
Changed the start-up message to '92 40'.  (It was '92 3A' which was wrong.  '3A' is for the AVT-423.)
Changed start priority to 46.
Disabled the TCP Ethernet "Nagle Algorithm".  Doing so greatly improved the command / response turn around time as measured at the client computer using Wireshark.
For example, command to response time for the '42 03 01' "Read ID" function went from about 190 msec to about 28 msec.

Version 0004
Release date: 3 December 2018
Taken from version 0003
Completely re-organized the variables with the goal to enable dual channel operations.
All channel specific variables are in a structure.
Fixed the "App Name" issue.  The application name and firmware version number now appear in the IP_Setup and Auto_Update window as well as announced via the debug port on reset.
I no longer turn off the +9.3 vdc supply when the "Read ID" function completes.  Instead I disable channel 0.
The user has to enable +9.3 vdc supply when first starting out.  But after that each bus can be enabled and disable using the '4x 06' command.
When disabled, the bus is turned off.  Therefore a Slave device is protected from possible damage when plugging into or being removed from a bus.
Added the following commands:
'4x 06' - disable / enable a channel.
'4x 07' - command pause
'4x 08' - write to Slave NO read.
'4x 09' - write to Slave with read (of Slave immediate response).

The manual has been updated.

Version xxxx
Release date: xxx
Taken from version xxx

Version xxxx
Release date: xxx
Taken from version xxx

Version xxxx
Release date: xxx
Taken from version xxx

Version xxxx
Release date: xxx
Taken from version xxx



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