====== LED ======

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 }} {{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 read / write.

\\ {{ctboard_led_reg.svg}} \\ \\

===== Diagram =====

\\ {{:ctboard:peripherals:ctboard_led.svg?700em}} \\ \\

===== Programming Example =====

The code snippets below show how to use the LEDs.

<code c>
#include "reg_ctboard.h"

CT_LED->BYTE.LED7_0 = (uint8_t) data_byte;            /* Write byte of data to LED7..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>
\\

<code asm>
ADDR_LED        EQU      0x60000100

                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>
\\