I have a Problem. I have an array
of std_logic_vector
and I input a value unsinged(3 downto 0)
and I want to use value as the Index of the array
.
So far so good but I should get a std_logic_vector
out of the array
and put in the Output segments
(which is also a std_logic_vector
with the same size) but I get the error:
> can't match type conversion with type array type "std_logic_vector"
here is my Code:
> library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
entity getarrayvalue is
port(
value : in unsigned(3 downto 0);
clk : in std_logic;
segments : out std_logic_vector(6 downto 0)
);
end entity;
architecture v1 of getarrayvalue is
type rom_type is array(0 to 9) of std_logic_vector(6 downto 0);
signal rom: rom_type :=("1111110","0110000","1101101","1111001","0110011","1011011","1011111","1110000","1111111","1111011");
signal val_i: integer;
val_i <= to_integer(value);
process(clk)
begin
if rising_edge(clk) then
segments <= rom_type(val_i);
end if;
end process;
end architecture;
Does anyone know how to fix this problem ? Thanks!
question from:
https://stackoverflow.com/questions/65908821/vhdl-getting-a-std-logic-vector-out-of-an-array-of-std-logic-vector 与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…