combining two variables to make a new one! to use in DmxSimple

Projects Programming
1

here is the code

void dmx(int zo, int col, int dim) //If "zo" is 1, and "col" is 2
{
DmxSimple.write(zocol, dim); // I need zocal to be "12"
Serial.println(newDmx);
}

arduino uno 1.5.2

Thanks for the help!

2 
zocol = col * 10 + dim;

-br

3

zo and col are always changing to a new dmx channel! I need to combine zo and col to a new variable?

I tried String.replace

void dmx(int zo, int col, int dim)
{
String newDmx;
newDmx = "01";
newDmx.replace ('0', zo);
newDmx.replace ('1', col);
DmxSimple.write(newDmx, dim);
Serial.println(newDmx);
}

I get this error
DMX_TouchScreenLighting.ino: In function 'void dmx(int, int, int)':
DMX_TouchScreenLighting:52: error: no matching function for call to 'DmxSimpleClass::write(String&, int&)'

I then tried newDmx += zo += col;

But it just adds the two together I need it to join or combine the two?

4

The routine doesn't like the String argument.

Are you trying to write a string, (or a String?) or a binary integer?

-br

5

So I need to convert the integers "zo" and "col" to strings than use replace
newDmx.replace ('0', zo);
newDmx.replace ('1', col);
Then I need to convert the string back to a integer before I use it in
DmxSimple.write(newDmx, dim);

How would I do that? Thanks

6

Well, you can do it the roundabout way you suggest, especially if you are being paid by the line.

Or you can use the code I posted up above in Reply #1, which does the same thing without the intermediate conversion to string format. Take a minute to understand what it's doing.

-br

7

Billroy,

Thanks I have no idea what I was thinking. lol

void dmx(int zo, int col, int dim)
{
int zocol;
zocol = zo * 10 + col;
DmxSimple.write(zocol, dim);
Serial.println(newDmx);
}

This works great! Thanks

8

Wouldn't it be more like this, "zocol = zo * 10 + col;" ?
zocol must be declaired as a new variable, not just combining zo and col.

Edit, never mind.

9

Glad it works. Good luck with the rest of your project.

-br