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https://opencores.org/ocsvn/hd44780_driver/hd44780_driver/trunk
[/] [hd44780_driver/] [trunk/] [example_driver.vhd] - Diff between revs 2 and 4
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| Rev 2 |
Rev 4 |
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Line 105... |
signal goto30 : std_logic;
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signal goto30 : std_logic;
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signal busy : std_logic;
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signal busy : std_logic;
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type state_type is (reset, write_char, write_char_wait, update, update_linecount,
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type state_type is (reset, write_char, write_char_wait, update, update_linecount,
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update_linecount_wait, write_char_1, write_char_1_wait,
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update_linecount_wait, write_char_1, write_char_1_wait,
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write_char_2, write_char_2_wait, write_char_3, write_char_4, hold);
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write_char_2, write_char_2_wait, write_char_3, write_char_4, hold,
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hold2);
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signal state : state_type;
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signal state : state_type;
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-- A string of 16 characters
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-- A string of 16 characters
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subtype string16_type is string(1 to 16);
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subtype string16_type is string(1 to 16);
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-- An array of 4 strings of 16 characters.
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-- An array of 4 strings of 16 characters.
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Line 243... |
state <= write_char;
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state <= write_char;
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end if;
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end if;
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-- The "hohouwer"
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-- The "hohouwer"
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when hold =>
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when hold =>
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state <= hold;
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--state <= hold;
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state <= hold2;
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home <= '1';
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when hold2 =>
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state <= reset;
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when others =>
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when others =>
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null;
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null;
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end case;
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end case;
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