Kontron JRexplus-LX - Manual (Page 20)

KTD-S0004-A Page 17 JIDA32 Interface
JRexplus LX Software Guide
7 JIDA32 Interface
Most KONTRON single board computers (SBCs) are equipped with unique hardware features that cannot be
accessed with standard API. The JIDA32 interface allows you to access this features in a hardware inde-
pendent manner under popular 32-bit operating systems.
Not mentioned parts of the JIDA32 interface are not supported and can lead to wrong results.
7.1 Generic Part
Each SBC has a unique seven letter name that corresponds directly with the physical type of board.
Examples are
PLX8, PDOT, BQBA and B690. Boards are also divided into classes. The currently defined
classes are CPU, VGA and IO. Each board has one primary class but it can also have any number of
secondary classes. This allows you to talk to a class of boards that has a particular functionality without
knowing the exact name of the board.
Identifier Value
Board name BLX8
Primary class CPU
Secondary class VGA
Boot counter 0 ... 65535
Note: The boot counter is only incremented when a cold boot is performed. For a warm boot this value is not changed.
7.2 Display Part
In this part only the backlight control can be used. The contrast control is generally not supported (modern
graphic controllers don't anymore contain a STN LCD interface).
Identifier Value
Backlight on/off On or Off
Backlight brightness 0 ... 255
Contrast on/off Not supported
Contrast value Not supported
End of dark boot Not supported
7.3 I2C-Bus Part
This part allows the access to serial busses. A write access is not allowed on every device though. KONTRON
does not guarantee the correct function of the component respectively the warranty claim is lost in case of
unallowed write cycles.