Differences

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

--- ctboard:peripherals:hexsw [2016/02/25 10:47] – feur
+++ ctboard:peripherals:hexsw [2022/12/23 11:01] (current) – ruan
@@ Line 3: / Line 3: @@
 The HEX switch on the CT Board can switch through 16 different states (4 bit). \\ \\
-> {{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 =====
+**Caveat:** Register bits [7:4] are read as '1' and therefore need to be masked.
+The register is read only.
+\\ {{ctboard_hexsw_reg.svg}} \\ \\
+===== Diagram =====
+\\ {{:ctboard:peripherals:ctboard_hexsw.svg?700em}} \\ \\
 ===== Programming Example =====
-The code snippet bellow shows how to use the HEXSW.
+The code snippets below show how to use the HEXSW.
 <code c>
 #include "reg_ctboard.h"
-uint8_t data = CT_HEXSW;       /* Read HEXSW into the lower nibble of a byte. */
+uint8_t data = CT_HEXSW;                    /* Read HEXSW into the lower nibble of a byte. */
 </code>
 \\
-===== Registers =====
+<code asm>
+ADDR_HEXSW      EQU      0x60000211
+                LDR      r0, =ADDR_HEXSW
+                LDRB     r1, [r0, #0]       ; Read HEXSW into the lower nibble of a byte.
+</code>
+\\
-The Registers are read only.
-\\ {{ctboard_hexsw_reg.svg}} \\ \\
-===== Diagram =====
-\\ {{:ctboard:peripherals:ctboard_hexsw.svg?700em}} \\ \\