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Altera_Forum's avatar
Altera_Forum
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8 years ago

I cant find any mistake but my compiler says its a mistake

Dear all, Please help me out her. counter <= counter + '1'; this is my instruction this is my error. So what is the mistake in it? Error (10327): VHDL error at led_blink.vh...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

Hi,

To use mathematical operators , you need to include the arith library package. I've included the list of packages in the IEEE library. You have to include the respective package for the operations you want to use.

library IEEE;

use IEEE.std_logic_1164.all;

use IEEE.std_logic_textio.all;

use IEEE.std_logic_arith.all;

use IEEE.numeric_bit.all;

use IEEE.numeric_std.all;

use IEEE.std_logic_signed.all;

use IEEE.std_logic_unsigned.all;

use IEEE.math_real.all;

use IEEE.math_complex.all;

Hope this helps.