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Altera_Forum's avatar
Altera_Forum
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12 years ago

Error (10818) What is wrong ??

Hi I'm try write this code. I don't now what is to change:confused: Quartus log: Error (10818): Can't infer register for "CLK_OUT" at PISO_SPI_LCD.vhd(40) because it does not hold its va...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

First you can't use both clock edges on a register, either edge but not both.

another error:

--- Quote Start ---

init: process (DATA_IN_XBIT) is

begin

if(send_is_running_status = '0')then

DATA_IN_TMP2 <= DATA_IN_XBIT; -- copy data to burref when sennding is disable

send_is_running_status <='1';

end if;

end process init;

--- Quote End ---

your send_is_running_status will just glitch up and down with tiny delay of path.

there is also syntax error at

new_data_to_send_status <= '1' which should be =