Is it possible to use floating point decimals in a WAITCNT

idbruce

I realize it probably isn't possible, but thought I would ask.

Mike G

A float is just a measurement of magnitude so yes but you would have to convert the float to an integer. 1.5 can be 1.5*10 = 15.0.

How long do you want to wait?

ElectricAye

idbruce wrote: »

I realize it probably isn't possible, but thought I would ask.

Since the WAITCNT waits on the system counter and the counter works in integers, I would say it can't be done.

EDIT: well, Mike G is correct - you can always convert your decimal to integer and then use that, but you can't use decimal directly.

idbruce

So in reality it has to be a whole number. Thanks.

Bruce

Cluso99

Bruce: Yes, the waitcnt is counting actual clocks (which is usually 12.5ns = 80MHz) so it has to be an integer.

ericball

The system counter is a 32 bit register which increases by 1 every clock cycle. WAITCNT specifies a value which the cog will halt until the system counter reaches. Therefore "wait until system counter = 1234.5678" doesn't make a heck of a lot of sense. Wait for 1.5 seconds makes more sense, in which case you would (float) multiply the value by CLKFREQ and use the (integer) result added to the current value of CNT.

Mike G

Nicely said ericball. That's the point I was trying to make.

idbruce

Thanks To All Who Responded

I solved the problem that I was having, but I definitely appreciate your input.

Thanks Again
Bruce