Matrix user forums

When compiling to hex I receive an error from the compiler, 'unknown identifier' using PWM component. The identifiers which it thinks are undefined (I presume) are the PWM variables (Enable, ChangePeriod, etc).

Have I missed a step in using the PWM component? ie, was I supposed to copy some code into the Supplementary Code box, etc?

Any help appreciated...

The PWM component should work on its own without any additional code.

Please post your FCF and C files to us (support@matrixmultimedia.co.uk) and we'll look into this.

Thanks, Steve - I'll mail the files to you. However, I think I have made some progress in terms of the symptoms - the errors are present whenever I try to use the PWM component in a flowcode program that also contains the Formula Flowcode component. Is there some conflict here?

(I was simply trying to make comparisons between the FF macro and a simple one that I wrote using the PWM component. I intended the buggy to drive forwards for a couple of seconds on the FF macro, pause, then do it again using my own driver macro!)

Cheers...

I've just tried the PWM and the Formula Flowcode components in the same program and not been able to get this error.

I will look at your code when I receive it.

Hello,

Thanks for the files. I now know why the errors are generated...

You will get the same error if you add the Formula Flowcode component to a new blank program, but do not call any of its macros.

To get around this, simply add a call to one of the Formula Flowcode macros somewhere in your program.