Differences

This shows you the differences between two versions of the page.

--- ctboard:peripherals:lcd_bg [2016/02/25 13:33] – created feur
+++ ctboard:peripherals:lcd_bg [2022/12/27 16:35] (current) – ruan
@@ Line 1: / Line 1: @@
-====== Background Light ======
+====== LCD Background Light ======
-Each colour of the background light is controlled by a 16 bit PWM generator. \\
+Each RGB colour of the background light is controlled by an individual 16 bit PWM generator. \\
-The brightness can be regulated from 0x0000 (0% / off) to 0xffff (100%). To adapt the brightness curve to the human eye a adadption to a logarithmic scale has to be done manually. \\ \\
+The brightness of each RGB colour can be regulated from 0x0000 (0% / off) to 0xffff (100%). To adapt the brightness curve to the human eye an adaption to a logarithmic scale has to be done manually. \\ \\
-> {{ctboard:ctboard_mode_1.svg?48px }} {{ctboard:ctboard_mode_2.svg?48px }} {{ctboard:ctboard_mode_3.svg?48px }} Please make sure the CT Board is in the correct mode.
+> {{ctboard:ctboard_mode_1.svg?48px }} {{ctboard:ctboard_mode_2.svg?48px }} {{ctboard:ctboard_mode_3.svg?48px }} {{ctboard:ctboard_mode_4.svg?48px }} Please make sure the CT Board is in the correct mode.
-> Supported [[ctboard:mode_switch|modes]]: **1**, **2**, **3**
+> Supported [[ctboard:mode_switch|modes]]: **1**, **2**, **3**, **4**
 \\
+===== Registers =====
+The Registers are read / write.
+\\ {{ctboard_lcd_pwm_reg.svg}} \\ \\
 ===== Programming Example =====
-The code snippet bellow shows how to set the background light on the LCD.
+The code snippets below show how to set the background light on the LCD.
 <code c>
@@ Line 22: / Line 28: @@
 <code asm>
-ADDR_LCD_BG     EQU      0x60000304
+ADDR_LCD_BG     EQU      0x60000340
                 LDR      r0, =ADDR_LCD_BG
+                LDR      r1, =0xffff
                 STRH     r1, [r0, #0]             ; Set PWM value for red background light.
                 STRH     r1, [r0, #2]             ; Set PWM value for green background light.
@@ Line 30: / Line 37: @@
 </code>
 \\
-===== Registers =====
-The Registers are read / write.
-\\ {{ctboard_lcd_pwm_reg.svg}} \\ \\