Differences

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--- ctboard:peripherals:lcd_ascii [2020/09/05 15:40] – [Programming Example] ruan
+++ ctboard:peripherals:lcd_ascii [2026/06/25 15:14] (current) – scbj
@@ Line 1: / Line 1: @@
 ====== LCD ASCII Interface ======
-Every position on the LCD corresponds to an address. See below for the realation. \\ \\
+Every position on the LCD corresponds to an address. See below for the relation. \\ \\
 > {{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**, **4**
 \\
+===== Registers =====
+The registers are write only.
+\\ {{ctboard_lcd_ascii_reg_new.svg}} \\ \\
+===== Display Positions =====
+\\ {{ctboard_lcd_ascii_new.svg?700em}} \\ \\
+Base address: 0x6000'0300
 ===== Programming Example =====
-The code snippet bellow shows how to use the ASCII interface of the LCD.
+The code snippets below shows how to use the ASCII interface of the LCD.
 <code c>
 #include "reg_ctboard.h"
+const char text[] = "hello";
-CT_LCD->ASCII[13u] = (char) ascii_char;    /* Write ascii_char at position 13 on the LCD. */
+CT_LCD->ASCII[13u] = 'c';         /* Write character 'c' at position 13 on the LCD. */
+CT_LCD->ASCII[18u] = text[0u];    /* Write character 'h' from string "hello" at position 18 on the LCD. */
 </code>
 \\
-<code asm>
+<code text>
-ADDR_LCD_ASCII  EQU      0x60000300
+.equ ADDR_LCD_ASCII, 0x60000300
-                LDR      r0, =ADDR_LCD_ASCII
+        ldr     r0,  =ADDR_LCD_ASCII
-                LDR      r1, "E"                          ; Load value of ASCII char 'E' into r2.
+        ldr     r1,  ="E"                 // load value of ASCII char 'E' into r1.
-                STRH     r1, [r0, #13]                    ; Write 'E' at position 13 on the LCD.
+        strb    r1,  [r0, #12]            // write 'E' at position 13 on the LCD.
 </code>
 \\
-===== Registers =====
-The Registers are write only.
-\\ {{ctboard_lcd_ascii_reg_new.svg}} \\ \\
-===== Display Positions =====
-\\ {{ctboard_lcd_ascii_new.svg?700em}} \\ \\
-Base address: 0x6000'0300