Differences

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

--- ctboard:peripherals:led [2016/02/25 10:44] – feur
+++ ctboard:peripherals:led [2022/12/23 11:06] (current) – ruan
@@ Line 1: / Line 1: @@
 ====== LED ======
-On the CT Board are 32 LEDs mounted. They are arranged in 4 groups of 8 LEDs and are **"active-high"**. \\
+The CT Board features 32 LEDs. They are arranged in 4 groups of 8 LEDs and are **"active-high"**. \\
 E.g. the LEDs are on if a logical **"1"** is written. \\ \\
-> {{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_led_reg.svg}} \\ \\
+===== Diagram =====
+\\ {{:ctboard:peripherals:ctboard_led.svg?700em}} \\ \\
 ===== Programming Example =====
-The code snippet bellow shows how to use the LEDs.
+The code snippets below show how to use the LEDs.
 <code c>
@@ Line 15: / Line 26: @@
 CT_LED->BYTE.LED7_0 = (uint8_t) data_byte;            /* Write byte of data to LED7..0. */
-CT_LED->HWORD.LED15_0 = (uint16_t) data_halfword;     /* Write half word of data to LED15..0. */
+CT_LED->HWORD.LED31_16 = (uint16_t) data_halfword;    /* Write half word of data to LED31..16. */
 CT_LED->WORD = (uint32_t) data_word;                  /* Write word of data to all LEDs. */
 </code>
 \\
-===== Registers =====
+<code asm>
+ADDR_LED        EQU      0x60000100
-The Registers are read / write.
+                LDR      r0, =ADDR_LED
+                STRB     r1, [r0, #0]                     ; Write byte of data to LED7..0.
+                STRH     r1, [r0, #2]                     ; Write half word of data to LED31..16. */
+                STR      r1, [r0, #0]                     ; Write word of data to all LEDs. */
+</code>
+\\
-\\ {{ctboard_led_reg.svg}} \\ \\
-===== Diagram =====
-\\ {{:ctboard:peripherals:ctboard_led.svg?700em}} \\ \\