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Hi all I'm new here to the forum.
I download the demo ver. of the picbasic pro
and was able to make some leds blink with a
16f84a chip.
Is there a way to make a led dim to low and then
dim up to high?
I tryed to make some wild program to do this
but it is full of errors.
I know basic some what and have some know how
in programing.
A little.
For some reson it dont like my veriables.
Can anyone show me the picbasic code to do this?
Thanks for any help!
Hi,
There's lots of ways to acomplish what you want, most of them involve some kind of PWM generating. Generating that PWM can be done with PBP's PWM command for a software-only-aproach or by the PICs hardware CCP module.
If dimming that LED up and down is all you want then something quick and dirty like this might do the trick:
That's one way...also have a look at the HPWM command and search this forum for Darrel Taylors software PWM routines.Code:TRISB.7=0 'Set PortB.7 to output, connect LED here.
DutyCycle VAR byte
Start:
For DutyCycle = 0 to 255
PWM PortB.7, DutyCycle, 10
Next
For DutyCycle = 255 to 0 Step -1
PWM PortB.7, DutyCycle, 10
Next
Goto Start
/Henrik.
Thanks HenrikOlsson
Thats what I was looking for.
Very nice of you to help me.
Now I can take this code you made
and mess with it.
You know like add more leds and mess with
the fade time.
Thanks again!