Key Backlight - Denso BHT-700-CE Reference Manual

(*5)
The backlight specified with the BHT_SetSysSettingDW (BHT_BACKLIGHT_DEVICE,...) function
illuminates.
(*6)
Cold booting is performed from the status at (1) above.
However, cold booting is performed from the status at (1) when the registry is saved with the status at (1)
or (2), and is performed from the status at (3) when the registry is saved with the status at (3).
(*7)
When performing warm booting or when resuming from the suspend status, the process is performed from
(1) if the status prior to warm boot/suspend is (1) or (2), and is performed from (3) if the status prior to
warm boot/suspend is (3).

4.7. Key Backlight

The following settings can be made for the key backlight.
Parameter
Device illuminated
when
BHT_SetBltStatus
called
Key backlight
illumination trigger
Control code
type R/W
(dwCtrlCode)
DW R/W BHT_BACKLIGHT
_DEVICE
DW R/W BHT_BACKLIGHT_
_KEY_FACTOR
Parameter value
(dwSysParam)
One of the following
combinations:
0: None
LIGHTING_LCD(=1)
: LCD
LIGHTING_KEY(=2)
: KEY
LIGHTING_LCD
| LIGHTING_KEY(=3)
: Both
0 : Always OFF
BHT_BLT_KEY
_FACTOR_KEY
: Illuminate only when
keys pressed
BHT_BLT_KEY
_FACTOR_KEYTAP
: Illuminate when keys
pressed or tapped
9
Default Validating timing
1 Immediately after
setting, when
BHT_SetBltStatus
next called
1 Immediately after
setting, first tap or
key press when
"BHT_BLT_KEY
_FACTOR_KEY" or
"BHT_BLT_KEY_
FACTOR_KEYTAP"