More than a single function

[ERMEGM]

Hello All,

I have been watching videos and seeing actual products that use PICs and have noticed the PICs doing two things at once. For instance, I have witnessed two separate outputs flashing at different rates. Kind of like watching two vehicles with their turn signals on and the flashing lights go in sync and out of phase with each other and then back in sync again.

How can one do this with PBP? Another example is pwming an output at one frequency while another output is at a different frequency. I thought the PIC can only do one thing at a time. Anyone have any example code?

Thanks,
Tony

[EarlyBird2]

Anyone have any example code?

This uses interrupt routines and Timers as one example.

http://www.picbasic.co.uk/forum/cont...le-LED-flasher

Have you considered Persistence of Vision? Some visual routines use this by changing a display at 60Hz so the display looks static but other parts of the program are executing many times in between the display refreshes, changing another LED for example.

Clear as mud?
It is just a case of perception it is not real magic just an illusion!

[EarlyBird2]

This is a good demonstration

http://www.picbasic.co.uk/forum/cont...ck-by-Pimentel

of the reinvention of the wheel.

[ERMEGM]

I was thinking something more along these lines.

[EarlyBird2]

Looks simple depending on the pic you are using.
Post your code.

[Darrel Taylor]

See post #3 in this thread ...

MIBAM - (Mirror Imaged Bit Angle Modulation)
Cylon Scanner
http://www.picbasic.co.uk/forum/showthread.php?t=10564

[EarlyBird2]

Hello All,

I have been watching videos and seeing actual products that use PICs and have noticed the PICs doing two things at once. For instance, I have witnessed two separate outputs flashing at different rates. Kind of like watching two vehicles with their turn signals on and the flashing lights go in sync and out of phase with each other and then back in sync again.

How can one do this with PBP? Another example is pwming an output at one frequency while another output is at a different frequency. I thought the PIC can only do one thing at a time. Anyone have any example code?

Thanks,
Tony

A PIC can only do one thing at a time. Or should I say it can only run one program at a time unlike computers for example. As Darrel has shown PBP can be used to give the effects you want. The appearance that you get of two things being done at the same time is an illusion created by POV.

If anyone has a way to make a PIC multitask please let me know.

[Darrel Taylor]

PIC's can do many things at the same time.

It can only execute one instruction of the program at a time ...
But simultaneously, all the hardware peripherals are doing their "thing" too.

Timers are counting, the A/D can be converting, LCD drivers are scanning, USARTS and SSP modules are sending/receiving data... etc.

It can be difficult to keep track of everything that's going on.
But when you do get a handle on it ... amazing feats of magic will follow.

You cannot say PIC's only do one thing at a time.

[EarlyBird2]

Thanks Darrel

You cannot say PIC's only do one thing at a time.

That was what I was trying not to say.

But they can only execute one instruction at a time.

Is what I was trying to say. But you said it better.