External Coolant Controls

def on_coolant_button_release_event(self, widget, data=None):
        # POSTGUI_HALFILE contains:
        # net coolant-flood tormach.coolant => parport.0.pin-14-out
        # net coolant-flood-io iocontrol.0.coolant-flood => tormach.coolant-iocontrol
        # The UI code here watches tormach.coolant-iocontrol for changes from LinuxCNC.
        # See the periodic handler for details
        if not self.is_button_permitted(widget): return
        self.window.set_focus(None)
        # disable coolant lockout : if user commands coolant, do it immediately
        self.coolant_lockout = 0
        # use our tormach.coolant HAL pin to track actual coolant state
        coolant_on = self.hal['coolant']
        if not coolant_on:
            self.hal['coolant'] = 1
        else:
            self.hal['coolant'] = 0

#coolant toggle section#
loadrt toggle2nist count=1
loadrt edge count=1
addf toggle2nist.0 servo-thread
addf edge.0 servo-thread
net coolant-flood  <=  iocontrol.0.coolant-flood

# Coolant switch
net flood-button <= hm2_7i76e.0.7i76.0.0.input-06 => edge.0.in 
net button-edge <= edge.0.out => toggle2nist.0.in 
net flood-on <= toggle2nist.0.on => halui.flood.on 
net flood-off <= toggle2nist.0.off => halui.flood.off
net flood-control <= halui.flood.is-on => toggle2nist.0.is-on

#original tormach code below here
#net coolant-flood tormach.coolant
#net coolant-flood-io iocontrol.0.coolant-flood => tormach.coolant-iocont

        self.hal = hal.component("tormach")
        self.hal.newpin("coolant", hal.HAL_BIT, hal.HAL_OUT)
        self.hal.newpin("coolant-iocontrol", hal.HAL_BIT, hal.HAL_IN)
        self.hal.newpin("coolant-tgbutton", hal.HAL_BIT, hal.HAL_IN) #nkp

         # initial hal states:
        self.prev_coolant_iocontrol = self.hal['coolant'] = 0
        self.prev_coolant_tgbutton  = 0 #nkp https://forum.linuxcnc.org/pathpilot/43326-external-coolant-controls

          if self.prev_coolant_iocontrol != self.hal['coolant-iocontrol']:
            if self.hal['coolant-iocontrol']:
                self.hal['coolant'] = 1
            else:
                self.hal['coolant'] = 0
            # current becomes previous
            self.prev_coolant_iocontrol = self.hal['coolant-iocontrol']

        # nkp https://forum.linuxcnc.org/pathpilot/43326-external-coolant-controls
        if self.prev_coolant_tgbutton != self.hal['coolant-tgbutton']:
            if self.hal['coolant-tgbutton']:
                self.hal['coolant'] = 1
            else:
                self.hal['coolant'] = 0
            # current becomes previous
            self.prev_coolant_tgbutton = self.hal['coolant-tgbutton']

net coolant-flood     tormach.coolant           => parport.0.pin-14-out
net coolant-flood-io  iocontrol.0.coolant-flood => tormach.coolant-iocontrol


net tgb  tormach.coolant-tgbutton


loadusr sim_pin    tgb