Question regarding Spin IF statement with Pushbutton

NWCCTV · 2013-04-20 18:50

I am trying to start a couple servos when a button is pushed. I am not sure what is wrong with my code but I am sure my PB circuit is correct. The code compiles just fine but the servos do not turn.

OBJ
   servo :     "PropBOE Servos"                        'Servo control object  
CON
  _clkmode        = xtal1 + pll16x           ' Feedback and PLL multiplier
  _xinfreq        = 5_000_000                ' External oscillator = 5 MHz
  PushButton      = 3                        ' Pushbutton Input Pin
PUB main                         ' Main method
 
   'repeat
      if [PushButton] == 1    ' wait for pushbutton to be pushed  
       servo.Set(15, 200)  ' Start Servo on pin 15 Counterclockwise
       servo.Set(14,-200)  ' Start Servo on pin 14 Clockwise
      else
       servo.stop          ' Stop Servo on pin 15
       servo.stop          ' Stop Servo on pin 14

David Betz · 2013-04-20 18:54

NWCCTV wrote: »

I am trying to start a couple servos when a button is pushed. I am not sure what is wrong with my code but I am sure my PB circuit is correct. The code compiles just fine but the servos do not turn.

OBJ
   servo :     "PropBOE Servos"                        'Servo control object  
CON
  _clkmode        = xtal1 + pll16x           ' Feedback and PLL multiplier
  _xinfreq        = 5_000_000                ' External oscillator = 5 MHz
  PushButton      = 3                        ' Pushbutton Input Pin
PUB main                         ' Main method
 
   'repeat
      if PushButton == 1    ' wait for pushbutton to be pushed  
       servo.Set(15, 200)  ' Start Servo on pin 15 Counterclockwise
       servo.Set(14,-200)  ' Start Servo on pin 14 Clockwise
      else
       servo.stop          ' Stop Servo on pin 15
       servo.stop          ' Stop Servo on pin 14

Why do you have the repeat statement commented out? The body of your loop will only run once.

NWCCTV · 2013-04-20 19:02

I just did that to see if I could get it to work, which I could not.

kuroneko · 2013-04-20 19:11

NWCCTV wrote: »

I just did that to see if I could get it to work, which I could not.

Shouldn't that read:

if ina[PushButton][COLOR="#D3D3D3"]{== 1}[/COLOR]

NWCCTV · 2013-04-20 19:33

I just did that to see if I could get it to work, which I could not.

NWCCTV · 2013-04-20 19:39

if ina[PushButton]{== 1}

This does not work either.

NWCCTV · 2013-04-20 19:47

I think this may be a resistor issue. What value resistor should I be using between the pushbutton and the PropBOE pin 3?

kuroneko · 2013-04-20 20:01

Does your servo object (source?) need some form of initialisation (start/init)?

NWCCTV · 2013-04-20 20:15

No. If I remove the IF statement and compile the servos turn as they are suppose to. It is after I put the IF statement in that it stops working. I have my pushbutton circuit wired exactly like the diagram here. I am using the same resistors that it says to use. Am I using the wrong circuit for this application or what? EDIT: Problem Solved. It was an indentation issue. I can not believe how sensitive Spin is to indentation. Thanks for the help.

Question regarding Spin IF statement with Pushbutton

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