Firmware release notes for the GP20 Shredder Hybrid

This is an overview of all GP20 Shredder Hybrid firmware releases, containing information about each individual update.

This update fixes a rare race condition and some small other issues, and adds support for newly produced machines. Upgrading to this version is recommended, but not essential.

• Fix race condition that could occasionally happen when a safety interlock was released (e.g. e-stop pressed or output bin removed) at exactly the right moment and would cause an internal error (ProcessGuard.cpp:233 or 234) to be displayed.
• On startup, let temperature average reading start at the current value instead of at 20° and moving to the actual value in a couple of seconds.
• Fix StartO (start objections) column in log output, it was accidentally printed in decimal instead of hexadecimal (with an incorrect and thus confusing 0x prefix).
• Improve message printend on serial on a watchdog timeout.
• Add support for the GPV2S model. This model will not work with older firmware versions.
• Support newer mainboards and interface boards that store more information about the board manufacturing in a newer (v2) board info block. These boards will not work with older firmware versions.
• Disallow resetting to factory settings while the machine is running.
• Various internal improvements.

• Allow manually controlling the conveyor belt.
• When starting the shredding process, start feeding material sooner (it now takes 8 seconds instead of 13 to detect the chamber is empty).
• Fix internal error that could occur when starting machine very quickly after power-on.
• Fix a software lockup that could in theory occur when some events occurred with very specific timing.
• Improve handling and reporting of memory allocation failures.
• Fix messages show when the safety interlocks between both machines are not engaged (these would confusingly talk about a missing hopper on the bottom machine and missing outlet on the top machine).
• Improve UI when stopping the machine to more accurately reflect what is happening.
• When tough material is processed and the machine is stopped after reversing the motor 10 times, reverse the motor one more time before stopping to disengage the material.
• Various internal improvements.

• Add support for standalone shredder models.
• Improved stability of initial communication with VFD.
• Redesigned user interface for starting to be more clear and friendly.
• Add machinelink support for hybrid setup (granulator + shredder).
• Various internal improvements.

• Various internal improvements.