LabJackT4 BellowsPumpStepperControl

LJT4BellowsPump.lua

--[[
  Name: BellowsPumpControl
  
  USER Ram U16 address starts at 46180 (USER_RAM0_U16)
  SPEED will be a slider from 0-2^16 resulting in a speed of 0-400 steps/sec
--]]

local MAX_SPEED = 800
local set_speed = 0 --this should execute ~1/second

local set_interval = 0
LJ.DIO_D_W(16,1)

--write 0 for startup speed to USER_RAM0_U16
MB.W(46180,0,set_speed)

-- This sets the read of user ram every second to update the speed
LJ.IntervalConfig(0, 1000.0)
-- Set the pulse time to maximum for now, will need to check b4 step
LJ.IntervalConfig(1,50000)


while true do
  if LJ.CheckInterval(0) then
    set_speed = MB.R(46180)
    if set_speed > 0 then
      set_interval = (2^16)/set_speed/MAX_SPEED*1000.0
      print("Pulse_Interval = ",set_interval, "\n")
      LJ.IntervalConfig(1,set_interval)
    end
  end
  if LJ.CheckInterval(1) then
    -- pulse a DIO pin, probably CIO0
    if set_speed > 0 then
      print(LJ.DIO_S_R(16)," ")
      if LJ.DIO_S_R(16) == 1 then 
        print("Hi2Lo")
        LJ.DIO_S_W(16, 0)
        print(LJ.DIO_S_R(16)," ")
      else
        LJ.DIO_S_W(16, 1)
        print("else: ",LJ.DIO_S_R(16)," ")
      end
      print(LJ.DIO_S_R(16),"\n")
    end
  end
end