Out of variable space (programming servos)

Antonuccio

I am currently trying to program 12 servos using a BS2, a Board of Education, and a Propeller Servo Controller Unit. The way I currently have my program setup I can only assign 10 servos without getting the program error "out of variable space". I am a serious novice when it comes to programing in general, so I do not know if there a way to program up to12 servos with my current setup. Or perhaps i will have to upgrade my hardware?

Here is the program I am trying to use to control the servos.

5testForum.bs2

Mike G

Give this a look...

'{$STAMP BS2}
'{$PBASIC 2.5}

' Set baud for all STAMP versions
#SELECT $STAMP
  #CASE BS2SX, BS2P
    N2400        CON     1021 + $8000
    N38K4        CON     45 + $8000
  #CASE BS2PX
    N2400        CON     1646 + $8000
    N38K4        CON     84 + $8000
  #CASE #ELSE
    N2400        CON     396 + $8000
    N38K4        CON     6 + $8000
#ENDSELECT


Sdat         CON    15
baud         CON    396

FOOT1        CON    8
FOOT2        CON    15
FOOT3        CON    11
FOOT4        CON    12
LEG1         CON    6
LEG2         CON    5
LEG3         CON    9
LEG4         CON    10
ARM1         CON    4
ARM2         CON    2
ARM3         CON    9
ARM4         CON    1
DEFAULT_RAMP CON   10

FOOT_UP      CON 850
FOOT_DOWN    CON 650

LEG_UP       CON 1000
LEG_DOWN     CON 500

ARM_UP       CON 900
ARM_DOWN     CON 700

'Vars
id           VAR    Word
ramp         VAR    Byte
position     VAR    Word
delay        VAR    Byte



Init:
  ramp = DEFAULT_RAMP 'speed adjust
  delay = 100

Main:
  id = FOOT1
  position = FOOT_UP
  GOSUb Write_PSC

  id = FOOT2
  GOSUb Write_PSC

  id = FOOT3
  GOSUb Write_PSC

  id = FOOT4
  GOSUb Write_PSC

GOTO Main

Write_PSC:
  SEROUT Sdat,Baud,["!SC", id, ramp, position.LOWBYTE, position.HIGHBYTE, CR]
  PAUSE delay
  RETURN

Antonuccio

I created a test program following your example and it seems to be working quite well. I will have to play with the program a bit more to be sure, but it looks like my problems are solved.

Thanks for the help Mike G.