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Diffstat (limited to 'src/bin2seg.vhd')
| -rw-r--r-- | src/bin2seg.vhd | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/src/bin2seg.vhd b/src/bin2seg.vhd new file mode 100644 index 0000000..0e56d28 --- /dev/null +++ b/src/bin2seg.vhd @@ -0,0 +1,50 @@ +library ieee; +use ieee.std_logic_1164.all; + +-- Convert a binary number to control signals for HEX Display +entity bin2seg is +port ( bin_i : in std_ulogic_vector(3 downto 0); + seg_o : out std_ulogic_vector(6 downto 0)); +end entity; + +architecture rtl of bin2seg is + + -- seven-segment positions + -- + -- segment positions input vector index segment name + -- a 0 => a + -- --- 1 => b + -- f | | b 2 => c + -- --- <- g 3 => d + -- e | | c 4 => e + -- --- 5 => f + -- d 6 => g + + + -- The segment LED will be switched on when the output is '0' and off when + -- output is '1' + +begin + + with bin_i select + seg_o <= +-- gfedcba segment + "1000000" when "0000", -- 0 + "1111001" when "0001", -- 1 + "0100100" when "0010", -- 2 + "0110000" when "0011", + "0011001" when "0100", + "0010010" when "0101", + "0000010" when "0110", + "1111000" when "0111", + "0000000" when "1000", + "0010000" when "1001", + "0001000" when "1010", + "0000011" when "1011", + "1000110" when "1100", + "0100001" when "1101", -- 13 + "0000110" when "1110", -- 14 + "0001110" when others; -- 15 + +end architecture rtl; + |