In SX Microcontrollers, SX/B Compiler and SX-Key Tool, bean wrote:

Ken,
  I would use RTCC to count the mag pulses. And update the servo in the program loop.

  Something like: [WARNING...UNTESTED CODE AHEAD!]

 


[code]
(replace this text with your code) 

OPTION = %11111111 ' Setup RTCC inc from external pin (Mag pulse) 

  

servoPos = 150 ' 1.5 milliseconds 

  

DO 

  RTCC = 0 

  FOR cnt=1 TO 50 

    servoPin = 1 

    PAUSEUS servoPos * 10 

    servoPin = 0 

    servoPos = 255 - servoPos 

    PAUSEUS servoPos * 10 

    servoPos = 255 - servoPos 

    ' Delayed 2.550 milliseconds so far 

    PAUSE 17.45 ' Make total delay 20mSec 

  NEXT 

  magCnt = RTCC 

  ' Do something with magCnt 

LOOP 


 

Bean.

[/code]

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