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-rw-r--r--nuttx/drivers/lcd/Kconfig14
1 files changed, 9 insertions, 5 deletions
diff --git a/nuttx/drivers/lcd/Kconfig b/nuttx/drivers/lcd/Kconfig
index 29a79a068..7673ed5d1 100644
--- a/nuttx/drivers/lcd/Kconfig
+++ b/nuttx/drivers/lcd/Kconfig
@@ -23,8 +23,9 @@ config LCD_MAXCONTRAST
int "LCD maximum contrast"
default 63 if NOKIA6100_S1D15G10
default 127 if NOKIA6100_PCF8833
- default 255 if LCD_P14201
+ default 255 if LCD_P14201 || LCD_LCD1602
default 63
+ range 1 255
---help---
must be 63 with the Epson controller and 127 with
the Phillips controller.
@@ -32,11 +33,14 @@ config LCD_MAXCONTRAST
config LCD_MAXPOWER
int "LCD maximum power"
default 1
+ range 1 255
---help---
- Maximum value of backlight setting. The backlight
- control is managed outside of the 6100 driver so this value has no
- meaning to the driver. Board-specific logic may place restrictions on
- this value.
+ Maximum value of LCD power setting. This normally equates to brightness:
+ The brighter the screen, the hight the power usage.
+
+ On LCDs that have a backlight, this value corresponds directly to that
+ backlight setting. Board-specific logic may place restrictions on this
+ value.
comment "Graphic LCD Devices"