Differences

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

--- ctboard:peripherals:dipsw [2016/02/25 10:47] – feur
+++ ctboard:peripherals:dipsw [2022/12/27 16:38] (current) – [Registers] ruan
@@ Line 1: / Line 1: @@
 ====== DIPSW ======
-On the CT Board are 32 DIP switches mounted. They are arranged in 4 groups of 8 DIP switches. \\
+The CT Board features 32 DIP switches. They are arranged in 4 groups of 8 DIP switches. \\
 If a DIP switch is in the position "high" (see [[#diagram]] below) it provides a logical **"1"**. \\ \\
-> {{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 only.
+\\ {{ctboard_dipsw_reg.svg}} \\ \\
+===== Diagram =====
+\\ {{:ctboard:peripherals:ctboard_dipsw.svg?700em}} \\ \\
 ===== Programming Example =====
-The code snippet bellow shows how to use the DIPSW.
+The code snippets below show how to use the DIPSW.
 <code c>
@@ Line 21: / Line 31: @@
 \\
-===== Registers =====
+<code asm>
+ADDR_DIPSW      EQU      0x60000200
-The Registers are read only.
+                LDR      r0, =ADDR_DIPSW
-\\ {{ctboard_dipsw_reg.svg}} \\ \\
+                LDRB     r1, [r0, #0]          ; Read byte from S7..0.
+                LDRH     r1, [r0, #2]          ; Read half word from S31..16.
-===== Diagram =====
+                LDR      r1, [r0, #0]          ; Read all DIPSW at once into a word.
+</code>
-\\ {{:ctboard:peripherals:ctboard_dipsw.svg?700em}} \\ \\
+\\