array of ascii

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Hello everyone

I have a question about the following piece of code

IEEE.STD_LOGIC_UNSIGNED.ALL
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ARCHITECTURE FSMD OF lcd_driver IS
  SUBTYPE ascii IS STD_LOGIC_VECTOR(7 DOWNTO 0);
  TYPE charArray IS array(1 to 6) OF ascii;
  SHARED VARIABLE line1: charArray := (x"31",x"32",x"33",x"34",x"35",x"36");
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BEGIN

When i try to change on of the values in line1 array by using: line1(1) := x"20"; i get an error

Enybody know what i did wrong ?

Thanks in advance

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Line1 is defied to be an array (1 to 6), but what you posted only initialized line1(1) in the declaration. When you define an initial value for an array, you have to define all of the elements. Later on, (i.e. not where the variable is declared), you can set one element.

Kevin Jennings

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Hello everyone

I have a question about the following piece of code

IEEE.STD_LOGIC_UNSIGNED.ALL
|
|
|
ARCHITECTURE FSMD OF lcd_driver IS
  SUBTYPE ascii IS STD_LOGIC_VECTOR(7 DOWNTO 0);
  TYPE charArray IS array(1 to 6) OF ascii;
  SHARED VARIABLE line1: charArray := (x"31",x"32",x"33",x"34",x"35",x"36");
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|
|
BEGIN

When i try to change on of the values in line1 array by using: line1(1) := x"20"; i get an error

Enybody know what i did wrong ?

Thanks in advance

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Shared variables are tricky/risky.

You may achieve the same by moving the instantiation of 'line1' as a (normal) variable inside the process where you are using it.

If we could see more of your code, we could give better help.