Implementing CCD-bus state calculation in the background.

[laszlodaniel]

Four bus-states need to be determined on-the-fly:

• busy,
• busy / idle transition,
• idle / tx possible and
• arbitration detector result.

Right now the first two states are established by an interrupt / timer task.
The third state is a simple 256 us delay right before writing data to the CCD-bus.
The fourth arbitration state is determined during the transmission of the first ID byte.
It would be much better if the same idle-timer would determine the first 3 states in the background.
The third state is especially sensitive to blocking delays.
An enumerated variable could store all 4 states in one place.

[panarama22]

Hi, could the library be used to make a clone of Chrysker's SKIM? Is it possible to develop a system that clones the SKIM module of a Wrangler 98-2006?

[laszlodaniel]

Hi, this has already been done by this company:

SKIM CCD emulator (1996-2001):
https://cartools.lv/Shop/product_info.php?products_id=145

SKIM PCI emulator (2001-2004):
https://cartools.lv/Shop/product_info.php?products_id=133