Const unsigned long - Read-only Variable.. Why? (SOLVED)

Projects Programming
1

Hi,

I´m trying to set open-time for a valve, but there seems to be a lil problem. I can set time by giving a number value like this:

const unsigned long DrainValvePeriod = 300000;  //Set Drain Valve Open Time

But if i use an variable (int) instead of a number, the code gives an error: "DrainValvePeriod"-variable is "read-only".

So this doesn´t work:

const unsigned long DrainValvePeriod = DrainTimeOutputValue;  //Set Drain Valve Open Time

What should I use instead of "const unsigned long"? Or is there some other way to solve this problem? Help? Anyone?

Thanks.

,Tomi

2

The const keyword makes it read only. So just get rid of the const.

3

Big Thanks Metallor. Problem solved.

,Tomi

4

const = constant. Which means you promise never to change it. The compiler is just holding you to your promise.

Steve