How do I fade in and out A Led, on the Propeller Chip

Comments

• HollyMinkowski Posts: 1,398

  2009-10-26 23:53 edited 2009-10-26 23:53

  Search for "pulse width modulation" PWM
  
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  "Where am I? Where am I going? Why am I in a handbasket?"
• SRLM Posts: 5,045

  2009-10-26 23:57 edited 2009-10-26 23:57

  I believe there is a section devoted to just that in the Propeller Education book...
• T Chap Posts: 4,249

  2009-10-27 01:57 edited 2009-10-27 01:57

  Start with PWM duty set to 0 and ramp it to 100. Use the object called PWMASM, it has a set duty method. Create a loop that repeats, increment the Duty by 1 each repeat. Use waitcnt to determine how fast it gets from 0 - 100.
  
  

  PUB RampLed
    x := 0
    Repeat 100
      pwm.setduty(x)   'set pwm as pwmasm  object
      waitcnt(40_000_000 + cnt)
      x++
  
• tonyp12 Posts: 1,951

  2009-10-27 03:12 edited 2009-10-27 03:12

  http://www.youtube.com/watch?v=DD5d_WeR4WQ
  
  http://docs.google.com/Doc?id=dhts4crd_8g5tkgcc8