Turning on and off a Led using the propeller spin.

Joe

Hi,

I want to know where can I find a little rutine to understand
how can I turn on and off a led using the propeller.

Using Basic Stamps it is easy just:

' {$STAMP BS2}

ini:

high 4
pause 500
low 4
pause 500

goto ini


How can I do the same using the propeller?
Thanks, Joe

Jamesx

Check out http://forums.parallax.com/forums/default.aspx?f=25&m=113109

I don't have a Propeller yet to try it, but that's how it's supposed to work. There's a whole bunch of other interesting examples as well in that same thread.

Jon Williams

Here's the Spin version of your program:

PUB main

· dira[noparse][[/noparse]4] := 1··················· ' make P4 an output
· repeat························· ' do forever
··· outa[noparse][[/noparse]4] := 1················· ' make·P4 high
··· waitcnt(clkfreq / 2 + cnt)··· ' wait 1/2 second (500 ms)
··· outa[noparse][[/noparse]4] := 0················· ' make P4 low
··· waitcnt(clkfreq / 2 + cnt)··· ' wait 1/2 second (500 ms)

Since the delay is the same for both the high and low portions you can shorten it to this:

PUB main
·
· dira[noparse][[/noparse]4] := 1··················· ' make P4 an output
· repeat························· ' do forever
··· !outa[noparse][[/noparse]4]····················· ' toggle P4
··· waitcnt(clkfreq / 2 + cnt)··· ' wait 1/2 second (500 ms)


▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Jon Williams
Applications Engineer, Parallax

Dave Scanlan

Hi Joe,

See the thread called SPIN CODE EXAMPLES FOR THE BEGINNER.· This has lots of introductory examples, starting with blinking LEDs.

Dave

Joe said...
Hi,

I want to know where can I find a little rutine to understand
how can I turn on and off a led using the propeller.

Using Basic Stamps it is easy just:

' {$STAMP BS2}

ini:

high 4
pause 500
low 4
pause 500

goto ini


How can I do the same using the propeller?
Thanks, Joe

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
··