Firmware Version 3/4.31.37
2/3/11 WJP
Transaction archive lockup issue resolved.
After a card out on 3.29.xx firmware, there was a slight possibility of the
following issues occurring:
- Lockup on preset screen while displaying a status of clearing on one or
more arms.
- Lockup on transaction complete screen.
- Real time clock updates stop.
- Loss of serial or Ethernet communication.
- Loss of keypad operation.
Upon power cycle after the issue:
- Lockup on preset screen display with status as blank or clearing on one or
more arms.
- Lockup on blank white screen.
- Real time clock stuck at 00/00/00 00:00:00.
- Factory defaults were required to regain control.
- Multiple power cycle operations to regain real time clock operations.
Root Cause:
- Operating System flash routines were flushing and disabling the CPU cache
with both the scheduler and interrupts enabled.
- If a task switch or interrupt occurred while flushing the cache, but before
disabling the cache, DRAM memory updates were lost.
- When this occurred, one of more tasks would stop running, the system could
lock up or the system state would become invalid.
Solution:
- Disable CPU cache in the MMU at startup for the flash memory area.
- Use application flash routines that do not modify CPU cache states.
- Added check for all presets complete to end transaction in case previous
end transaction was interrupted.
- Remove background processing in end transaction routine to prevent
recursion with previous change.
Build now links with pxa255-rcu-lib-romram-net-11 with cache disabled on flash
address space.
Use application flash routines for firmware and transaction updates. (Verify
firmware update functionality)
For PXA255, Flash block unlock routine checks lock status before unlocking
flash blocks. Transaction archive blocks are left unlocked.
Corrected issue with reading transaction details on the Modbus interface.
Restored ability to remotely modify time without an active W&M switch (changes
are W&M logged)
Updated copyright date.
2/8/11 WJP
Increased the number of allowable additives in a recipe from 6 to 12.
Changed firmware version to 3/4.31.00.
Realigned all NVRAM structures for new fields (totalizers will not be preserved
from previous versions)
Changed all NVRAM DBASE versions to 3.31.00.
Added ability to place compartment number on standalone ticket.
Added column position to R203 command. (MultiMate update needed)
Adjusted default ticket to display compartment number and also have room for
totalizer widths.
Added remote clear input to clear batch on external input. (No Flow, No Alarm,
Load Complete)
remote_clear bit added to preset status.
Added new Preset configuration parameter, "Remote Clear FCM#".
Added ability to read a live relative density.
Density error will be reported for a density or relative density error.
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