General Purpose Leds; General Purpose Led Function - Kontron CP308 User Manual

CP308
2.3.1.2

General Purpose LEDs

The CP308 provides four General Purpose LEDs (LED0..3) on the front panel. They are de-
signed to indicate the boot-up POST code after which they are available to the application.
If the LED0..3 are lit red during boot-up, a failure is indicated before the uEFI BIOS has started.
In this case, check the power supply. If the power supply appears to be functional and the LEDs
are still red, please contact Kontron.
The POST code is indicated during the boot-up phase. After boot-up, the LEDs indicate Gen-
eral Purpose or Port 80 signals, depending on the uEFI BIOS settings. The default setting after
boot-up is General Purpose.
Table 2-6:

General Purpose LED Function

LED COLOR
LED3 red
green
red+green --
LED2 red
green
red+green --
LED1 red
green
red+green --
LED0 red
green
red+green --
For further information regarding the configuration of the General Purpose LEDs, refer to Chap-
ter 4.3.13, LED Configuration Register, and Chapter 4.3.14, LED Control Register.
Note ...
The bit allocation for Port 80 is the same as for the POST code.
ID 1027-4487, Rev. 3.0
FUNCTION
DURING BOOT-UP
When lit up during boot-up, it indi-
cates a power failure.
--
When lit up during boot-up, it indi-
cates a hardware reset.
--
When lit up during boot-up, it indi-
cates a uEFI BIOS boot failure.
--
When lit up during boot-up, it indi-
cates a uEFI BIOS boot failure.
--
Functional Description
FUNCTION DURING
uEFI BIOS POST
(if POST code config. is
enabled)
--
General Purpose or Port 80
Default: General Purpose
uEFI BIOS POST bit 3
and bit 7
--
--
General Purpose or Port 80
uEFI BIOS POST bit 2
Default: General Purpose
and bit 6
--
--
General Purpose or Port 80
uEFI BIOS POST bit 1
Default: General Purpose
and bit 5
--
--
General Purpose or Port 80
uEFI BIOS POST bit 0
Default: General Purpose
and bit 4
--
FUNCTION
AFTER BOOT-UP
Page 2 - 11