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Altera_Forum
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15 years ago

VHDL Error (10028): Can't resolve multiple constant drivers for net...

Hi all, I'm a rank beginner, so expect beginner errors. I am using Quartus v9.1. I'm getting the famous "Error (10028): Can't resolve multiple constant drivers for net "button1" at keyfob...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

You should think of a procedure (or function) to be executed 'in-line' i.e. inside the process where you make the call to it. So you end up with two processes assigning a value to the signal 'button1', hence the compiler's complaint. The same applies to signal ' button1_bits_left'.

To solve this in your code you have to change the approach to handle every assignment to signal 'button1' in a single process. The simplest approach is to handle everything in the clocked process.