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Hi!

I've written some VHDL code and I got the following error message:

Error: Can't resolve multiple constant drivers for net sensor_sigte[1] at Simulacion_SSI.vhd(104)

Can anybody help me with this?
The code is posted below. If you need the complete program tell me and I'll send you. Of course I have posted here the part of the code I think is necessary for corrections.

Thanks!!!!!



ETAPA_ENVIO: process -- LÍNEA 104
begin
wait until (step=2);
case (sensor) is
when 1 =>
control <= "01";
sensor_sigte <= 2;
when 2 =>
control <= "10";
sensor_sigte <= 3;
when 3 =>
control <= "11";
sensor_sigte <= 1;
end case;
irq_aux <= '1';
step_sigte <= 3;
data_paralelo_out <= data_paralelo_aux;
end process;

SINCRO: process (CLK_48M, RESET)
begin

if (RESET='1') then
step <= 1;
step_sigte <= 1;
sensor <= 1;
sensor_sigte <= 1;

elsif ((CLK_48M'EVENT) AND (CLK_48M='1')) then

sensor <= sensor_sigte;
step <= step_sigte;
end if;
end process;

Hi Roberto,

Don't you forget the process signal ?

Example: JP, newbie in VHDL

Hi

The cause is simple:
you have a signal that is driven in 2 process.
The VHDL cannot "understand" that.
In VHDL you must assign a signal in one and only one process.
You can read it in others process but not write in this signal.

Regards

Alors déja JP pour le il n'est pas utile car il y a un "Wait UNTIL" et ça remplasse la liste de sensibilitée...
Le probleme vient du signal sensor_sigte qui est affecter dans les deux process. Ce n'est pas autorisé en VHDL.[/u]

Désole lamygale je n'avais pas vu ton message

il n'est pas utile car il y a un "Wait UNTIL" et ça remplasse la liste de sensibilitée...

Ok merci pour l'info

JP, toujours newbie mais il se soigne