LAB 4, 5, 6, 7, 8, 9, 10, 11
- P_DISPLAY.VHD
library ieee; use ieee.std_logic_1164.all; package P_DISPLAY is type T_DIGITS is array (2 downto 0) of integer range 0 to 10; type T_DISPLAY is array (2 downto 0) of std_ulogic_vector(6 downto 0); constant SEG_0 : std_ulogic_vector(6 downto 0):= "0111111"; constant SEG_1 : std_ulogic_vector(6 downto 0):= "0000011"; constant SEG_2 : std_ulogic_vector(6 downto 0):= "1101101"; constant SEG_3 : std_ulogic_vector(6 downto 0):= "1100111"; constant SEG_4 : std_ulogic_vector(6 downto 0):= "1010011"; constant SEG_5 : std_ulogic_vector(6 downto 0):= "1110110"; constant SEG_6 : std_ulogic_vector(6 downto 0):= "1111110"; constant SEG_7 : std_ulogic_vector(6 downto 0):= "0100011"; constant SEG_8 : std_ulogic_vector(6 downto 0):= "1111111"; constant SEG_9 : std_ulogic_vector(6 downto 0):= "1110111"; constant SEG_E : std_ulogic_vector(6 downto 0):= "1111100"; -- pragma translate_off procedure DISPLAY_DIGIT(signal DISPLAY:T_DISPLAY); -- pragma translate_on end P_DISPLAY; -- pragma translate_off use std.textio.all; package body P_DISPLAY is ------------------------------ -- -- 111111111112222 -- 123456789012345678901234 -- 1 #5## #### #### -- 2 # # # # # # -- 3 4 0 # # # # -- 4 # # # # # # -- 5 #6## #### #### -- 6 # # # # # # -- 7 3 1 # # # # -- 8 # # # # # # -- 9 #2## #### #### -- ------------------------------ constant ACTIVE_SEG: character := '#'; constant EMPTY_SEG: character := ' '; -- Width and height of a digit constant WIDTH: integer := 8; constant HEIGHT: integer := 9; -- Datatypes to store the complete display in a matrix subtype T_MATRIX_ROW is bit_vector (1 to 3*WIDTH); type T_DISP_MATRIX is array (1 to HEIGHT) of T_MATRIX_ROW; -- Definition of the appearance of the 6 segments subtype T_DIGIT_ROW is bit_vector(1 to WIDTH); type T_SEG_DEF is array (1 to HEIGHT) of T_DIGIT_ROW; type T_DIGIT_DEF is array (0 to 6) of T_SEG_DEF; constant DIGIT_DEF: T_DIGIT_DEF :=(("00000000", -- .... "00000010", -- . # "00000010", -- . 0 "00000010", -- . # "00000000", -- .... "00000000", -- . . "00000000", -- . . "00000000", -- . . "00000000"),-- .... ("00000000", -- .... "00000000", -- . . "00000000", -- . . "00000000", -- . . "00000000", -- .... "00000010", -- . # "00000010", -- . 1 "00000010", -- . # "00000000"),-- .... ("00000000", -- .... "00000000", -- . . "00000000", -- . . "00000000", -- . . "00000000", -- .... "00000000", -- . . "00000000", -- . . "00000000", -- . . "00111100"),-- #2## ("00000000", -- .... "00000000", -- . . "00000000", -- . . "00000000", -- . . "00000000", -- .... "01000000", -- # . "01000000", -- 3 . "01000000", -- # . "00000000"),-- .... ("00000000", -- .... "01000000", -- # . "01000000", -- 4 . "01000000", -- # . "00000000", -- .... "00000000", -- . . "00000000", -- . . "00000000", -- . . "00000000"),-- .... ("00111100", -- #5## "00000000", -- . . "00000000", -- . . "00000000", -- . . "00000000", -- .... "00000000", -- . . "00000000", -- . . "00000000", -- . . "00000000"),-- .... ("00000000", -- .... "00000000", -- . . "00000000", -- . . "00000000", -- . . "00111100", -- #6## "00000000", -- . . "00000000", -- . . "00000000", -- . . "00000000"));-- .... procedure DISPLAY_DIGIT(signal DISPLAY:T_DISPLAY) is file OUTFILE : TEXT is out "display.txt"; variable L : line; variable DISP_TEXT: string(T_MATRIX_ROW'range); variable DISP_MATRIX: T_DISP_MATRIX; variable COL_L: integer; variable COL_R: integer; begin -- Clear the display DISP_MATRIX := (others => (others => '0')); -- Loop over all digits for DIGIT in T_DISPLAY'range loop -- Calculate the left- and rightmost columns COL_L := DIGIT*WIDTH + 1; COL_R := DIGIT*WIDTH + WIDTH; -- Loop over all segments for SEGMENT in 0 to 6 loop if DISPLAY(DIGIT)(SEGMENT) = '1' then -- Copy the matrix to the final display -- Loop over all rows of the display for ROW in T_SEG_DEF'range loop DISP_MATRIX(ROW)(COL_L to COL_R) := DISP_MATRIX(ROW)(COL_L to COL_R) or DIGIT_DEF(SEGMENT)(ROW); end loop; end if; end loop; end loop; -- Write the matrix to a textfile for I in T_DISP_MATRIX'range loop -- Start with an empty line DISP_TEXT := (others => EMPTY_SEG); for J in T_MATRIX_ROW'range loop if DISP_MATRIX(I)(J) = '1' then DISP_TEXT(J) := ACTIVE_SEG; end if; end loop; -- Write the line write(L, DISP_TEXT); writeline(OUTFILE, L); end loop; end DISPLAY_DIGIT; end P_DISPLAY; -- pragma translate_on