Rockwell Automation 6182 SDK - Manual (Page 54)

4–14 RAC6182-Specific Extensions to the CE API
Publication 6182-UM002B-EN-P
The keypad related macros and special IOCTLs defined in KeypadAPI.h
are intended for use by system developers only. Rockwell recommends
against and does not support their use by customers.
Standard I/O streams functions called with these special constants as
arguments provide a means for the calling software module to control the
system keypad driver (keypad.dll). The software module that utilizes
this means is the system keypad handler (kh.dll).
The macros and special IOCTLs defined in atmelapi.h are intended
for use by system developers only. Rockwell recommends against
and does not support their use by customers.
Standard I/O streams functions called with these special constants as
arguments provide a means for the calling software module to control the
system touch screen controller. The software module that utilizes this
means is the system control panel.
Three LEDs are available on the RAC6182 and may be accessed by
applications.
LED 0 – Warning LED. This LED is toggled on and off during the
boot process and is set to off at the end of boot. After boot it is not
used by any operating system components and is available for use by
an application to signal warning conditions.
LED 1 – NUMLOCK LED. The keypad driver in the operating
system controls this LED. When first loaded, the driver assumes the
default state of NUMLOCK on and accordingly turns this LED on.
The driver will set or clear this LED upon change of the keypad
NUMLOCK state. This LED is application accessible, but its use by
applications is not recommended except the RAC6182 is configured
without a keypad.
LED 2 – Power LED. This LED is toggled on and off during the boot
process and is left on at the end of boot. The operating system does
not use this LED after boot. This LED is application accessible, but
its use by applications is not recommended except possibly in a
power fail/brownout condition.
Streams Interface for
Keypad Driver Control
Streams Interface for
Touchscreen Control
Functions for LED Control