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Altera_Forum
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14 years ago

VHDL error - natural type does not match string literal

Hi, I am trying to make a simple program which will turn on the green LED when the Key(0) is pressed and when we leave the key, it will be switched off. I am getting this error in the co...
Altera_Forum's avatar
Altera_Forum
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14 years ago

Your output is 3-bits

oLEDG: out std_logic_vector(2 downto 0)

you need to assign a 3-bit value, eg.,

oLEDG <= "111";

or

oLEDG <= "000";

If you want to just assign to 1-bit, lets say bit 0, then you can do

oLEG(0) <= '1';

Note that '1' is a 1-bit std_logic value, and "111" is a 3-bit std_logic_vector value.

Cheers,

Dave