def stopPump(self):
if self.dispensing:
self.toggle_dispense()
else:
print_error("Pump is not running", self.stop_on_errors)
def __init__(self, port, **kwargs):
'''
Set up a pump object, connect to the pump via serial io and optionally
run initial configurations.
Input:
com: the serial port number that the pump is connected to as an int.
**kwargs <optional keyword arguments>
stop_on_errors: instruct the error handling to halt the program
upon an error if Boolean True defaults to False
trigger: set the trigger method 'com' or 'DO' defaults to 'com'
pressure_units: the pressure units you would like to set,
defaults to whatever is on the pump
vacuum_units: the vacuum units you would like to set,
defaults to whatever is on the pump
pressure: float value of the pressure to set
For DO only:
A3200: the A3200 instance
'''
self.no_pump = False
self.debug = False
self.pressure_units = None
self.vacuum_units = None
self.pressure = -1
self.vacuum = -1
self.pump = serial.Serial(port=port,
baudrate=115200,
parity=serial.PARITY_NONE,
bytesize=serial.EIGHTBITS,
stopbits=serial.STOPBITS_ONE,
timeout=0.125)
self.dispensing = False
if 'stop_on_errors' in kwargs:
self.stop_on_errors = kwargs['stop_on_errors']
else:
self.stop_on_errors = False
if 'trigger' in kwargs:
self.trigger = 'com' #default to com
if kwargs['trigger'].lower() is 'do':
self.trigger = "DO"
try:
self.A3200 = kwargs['A3200']
self.trigger_bit = kwargs['bit']
self.trigger_axis = kwargs['axis']
except KeyError:
print_error(
"DO triggering requires an A3200 instance, axis, and bit number, defaulting to com",
self.stop_on_errors)
self.trigger = 'com'
else:
self.trigger = 'com'
if 'pressure_units' in kwargs:
self.set_pressure_units(kwargs['pressure_units'])
else:
self.get_pressure_units()
if 'vacuum_units' in kwargs:
self.set_vacuum_units(kwargs['pressure_units'])
else:
self.get_vacuum_units()
if 'pressure' in kwargs:
self.set_pressure(kwargs['pressure'])
if 'vacuum' in kwargs:
self.set_pressure(kwargs['vacuum'])
def startPump(self):
if not self.dispensing:
self.toggle_dispense()
#self.sleep(self.dispense_delay)
else:
print_error("Pump is already running", self.stop_on_errors)