7 Segment Display

There are 4 7 segment displays mounted on the CT Board. The displays can be accessed over two different interfaces:

• The binary interface, for HEX representation of binary values
• The "raw" interface, for independent controll over each segment

Depending on the used addresses the display will switch automatically.

Additionally the display can be used as HEX display. All 4 displays can directly show a 16 bit binary value.
In this mode the display can't be switched off, use the raw interface.

The code snippet bellow shows how to use the 7 segment display as HEX display.

#include "reg_ctboard.h"
 
CT_SEG7->BIN.BYTE.DS1_0 = (uint8_t) data_byte;        /* Write byte of binary data to DS1..0. */
CT_SEG7->BIN.HWORD = (uint16_t) data_halfword;        /* Write half word of binary data to all displays. */

ADDR_SEG7_BIN   EQU      0x60000120
 
                LDR      r0, =ADDR_SEG7_BIN
                STRB     r1, [r0, #0]                     ; Write byte of binary data to DS1..0.
                STRH     r1, [r0, #0]                     ; Write half word of binary data to all displays.

The Registers are read / write.