class Voltage:
channelRoomMappings = {"up": {"wz1": 1, "wz2": 3, "sz": 5}, "down": {"wz1": 2, "wz2": 4, "sz": 6}}
def __init__(self, room, direction):
self.room = room
self.direction = direction
self.channel = self.channelRoomMappings[direction][room]
i2c_helper = ABEHelpers()
bus = i2c_helper.get_smbus()
self.adc = DeltaSigma(bus, 0x68, 0x69, 18)
def readVoltage(self, channel):
#return 2
return self.adc.read_voltage(channel)
def canSwitch(self):
if self.room in ("wz", "all"):
return True
voltage = self.readVoltage(self.channel)
print('Channel ' + str(self.channel) + " carries " + str(voltage) + " Volts")
if math.fabs(voltage) > 0.1:
return False
else:
return True
def __init__(self, datasocket=None):
threading.Thread.__init__(self)
if datasocket is not None:
self.datasocket = datasocket
else:
self.datasocket = None
self.measured_voltage = 0
self.filament = {}
port = '/dev/serial/by-id/usb-TTI_CPX400_Series_PSU_C2F952E5-if00'
self.filament['device'] = CPX.CPX400DPDriver(1, device=port)
self.filament['voltage'] = 0
self.filament['current'] = 0
self.filament['idle_voltage'] = 3
self.filament['device'].set_current_limit(4)
self.filament['device'].output_status(True)
self.bias = {}
self.bias['device'] = CPX.CPX400DPDriver(2, device=port)
self.bias['grid_voltage'] = 0
self.bias['grid_current'] = 0
self.bias['device'].output_status(True)
self.looptime = 0
self.update_setpoint(0.1)
i2c_helper = ABEHelpers()
bus = i2c_helper.get_smbus()
self.adc = DeltaSigma(bus, 0x68, 0x69, 18)
self.adc.set_pga(1) # This shold be 8, but amplifier seems broken on the available device
self.running = True
self.wanted_voltage = 0
self.emission_current = 999
self.pid = pid.PID(2, 0.03, 0, 9)
self.pid.update_setpoint(self.setpoint)
def __init__(self, room, direction):
self.room = room
self.direction = direction
self.channel = self.channelRoomMappings[direction][room]
i2c_helper = ABEHelpers()
bus = i2c_helper.get_smbus()
self.adc = DeltaSigma(bus, 0x68, 0x69, 18)
def main():
""" Main function """
logging.basicConfig(filename="logger.txt", level=logging.ERROR)
logging.basicConfig(level=logging.ERROR)
i2c_helper = ABEHelpers()
bus = i2c_helper.get_smbus()
adc_instance = DeltaSigma(bus, 0x68, 0x69, 18)
tempreader = TemperatureReader(adc_instance)
tempreader.daemon = True
tempreader.start()
codenames = ['cooling_water_hot', 'cooling_water_cold']
loggers = {}
for i in range(0, 2):
loggers[codenames[i]] = ValueLogger(tempreader,
comp_val=0.5,
channel=i)
loggers[codenames[i]].start()
socket = DateDataPullSocket('hall_cooling_water_temp',
codenames,
timeouts=2.0)
socket.start()
live_socket = LiveSocket('hall_waterpressure', codenames)
live_socket.start()
db_logger = ContinuousDataSaver(continuous_data_table='dateplots_hall',
username=credentials.user,
password=credentials.passwd,
measurement_codenames=codenames)
db_logger.start()
time.sleep(5)
while tempreader.is_alive():
time.sleep(0.25)
for name in codenames:
value = loggers[name].read_value()
socket.set_point_now(name, value)
live_socket.set_point_now(name, value)
if loggers[name].read_trigged():
print(value)
db_logger.save_point_now(name, value)
loggers[name].clear_trigged()
def main():
""" Main function """
logging.basicConfig(filename="logger.txt", level=logging.ERROR)
logging.basicConfig(level=logging.ERROR)
i2c_helper = ABEHelpers()
bus = i2c_helper.get_smbus()
adc_instance = DeltaSigma(bus, 0x68, 0x69, 18)
pressurereader = PressureReader(adc_instance)
pressurereader.daemon = True
pressurereader.start()
codenames = ['mr_iongauge_pressure']
logger = ValueLogger(pressurereader, comp_val=0.5)
logger.start()
socket = DateDataPullSocket('Microreactor Ion Gauge', codenames, timeouts=[1.0])
socket.start()
live_socket = LiveSocket('Microreactor Ion Gauge', codenames, 2)
live_socket.start()
db_logger = ContinuousDataSaver(continuous_data_table='dateplots_microreactor',
username=credentials.user,
password=credentials.passwd,
measurement_codenames=codenames)
db_logger.start()
time.sleep(2)
while True:
time.sleep(0.25)
value = logger.read_value()
socket.set_point_now(codenames[0], value)
live_socket.set_point_now(codenames[0], value)
if logger.read_trigged():
print(value)
db_logger.save_point_now(codenames[0], value)
logger.clear_trigged()
ABElectronics Delta-Sigma Pi 8-Channel ADC demo
Version 1.0 Created 09/05/2014
Version 1.1 16/11/2014 updated code and functions to PEP8 format
Requires python smbus to be installed
run with: python demo-read_voltage.py
================================================
Initialise the ADC device using the default addresses and sample rate, change this value if you have changed the address selection jumpers
Sample rate can be 12,14, 16 or 18
"""
i2c_helper = ABEHelpers()
bus = i2c_helper.get_smbus()
adc = DeltaSigma(bus, 0x68, 0x69, 18)
while (True):
# clear the console
os.system('clear')
# read from adc channels and print to screen
print("Channel 1: %02f" % adc.read_voltage(1))
print("Channel 2: %02f" % adc.read_voltage(2))
print("Channel 3: %02f" % adc.read_voltage(3))
print("Channel 4: %02f" % adc.read_voltage(4))
print("Channel 5: %02f" % adc.read_voltage(5))
print("Channel 6: %02f" % adc.read_voltage(6))
print("Channel 7: %02f" % adc.read_voltage(7))
print("Channel 8: %02f" % adc.read_voltage(8))
================================================
ABElectronics Delta-Sigma Pi 8-Channel ADC demo
Version 1.0 Created 29/02/2015
Requires python 3 smbus to be installed
run with: python3 demo-read_voltage.py
================================================
Initialise the ADC device using the default addresses and sample rate, change this value if you have changed the address selection jumpers
Sample rate can be 12,14, 16 or 18
"""
i2c_helper = ABEHelpers()
bus = i2c_helper.get_smbus()
adc = DeltaSigma(bus, 0x68, 0x69, 18)
while True:
# clear the console
os.system("clear")
# read from adc channels and print to screen
print("Channel 1: %02f" % adc.read_voltage(1))
print("Channel 2: %02f" % adc.read_voltage(2))
print("Channel 3: %02f" % adc.read_voltage(3))
print("Channel 4: %02f" % adc.read_voltage(4))
print("Channel 5: %02f" % adc.read_voltage(5))
print("Channel 6: %02f" % adc.read_voltage(6))
print("Channel 7: %02f" % adc.read_voltage(7))
print("Channel 8: %02f" % adc.read_voltage(8))
from ABE_DeltaSigmaPi import DeltaSigma
from ABE_helpers import ABEHelpers
i2c_helper = ABEHelpers()
bus = i2c_helper.get_smbus()
adc = DeltaSigma(bus, 0x68, 0x69, 18)
while True:
voltage = adc.read_voltage(1)
v = voltage * 1000
print('')
#print('Channel 1: ' + str(v) + " Volts")
print('Channel 1: ' + str(1000 * adc.read_voltage(1)) + " V")
print('Channel 2: ' + str(1000 *adc.read_voltage(2)) + " V")
print('Channel 3: ' + str(1000 * adc.read_voltage(3)) + " V")
print('Channel 4: ' + str(1000 * adc.read_voltage(4)) + " V")
print('Channel 5: ' + str(1000 * adc.read_voltage(5)) + " V")
print('Channel 6: ' + str(1000 * adc.read_voltage(6)) + " V")
print('Channel 7: ' + str(1000 * adc.read_voltage(7)) + " V")
print('Channel 8: ' + str(1000 * adc.read_voltage(8)) + " V")
class EmissionControl(threading.Thread):
""" Control the emission of a filament. """
def __init__(self, datasocket=None):
threading.Thread.__init__(self)
if datasocket is not None:
self.datasocket = datasocket
else:
self.datasocket = None
self.measured_voltage = 0
self.filament = {}
port = '/dev/serial/by-id/usb-TTI_CPX400_Series_PSU_C2F952E5-if00'
self.filament['device'] = CPX.CPX400DPDriver(1, device=port)
self.filament['voltage'] = 0
self.filament['current'] = 0
self.filament['idle_voltage'] = 3
self.filament['device'].set_current_limit(4)
self.filament['device'].output_status(True)
self.bias = {}
self.bias['device'] = CPX.CPX400DPDriver(2, device=port)
self.bias['grid_voltage'] = 0
self.bias['grid_current'] = 0
self.bias['device'].output_status(True)
self.looptime = 0
self.update_setpoint(0.1)
i2c_helper = ABEHelpers()
bus = i2c_helper.get_smbus()
self.adc = DeltaSigma(bus, 0x68, 0x69, 18)
self.adc.set_pga(1) # This shold be 8, but amplifier seems broken on the available device
self.running = True
self.wanted_voltage = 0
self.emission_current = 999
self.pid = pid.PID(2, 0.03, 0, 9)
self.pid.update_setpoint(self.setpoint)
def set_bias(self, bias):
""" Set the bias-voltage """
if self.datasocket is not None:
self.datasocket.set_point_now('ionenergy', bias)
if bias > -1:
self.bias['device'].set_voltage(bias)
if bias < 5:
pass # TODO: Implement check to make sure not to melt the filament
def update_setpoint(self, setpoint):
""" Update the setpoint """
self.setpoint = setpoint
if self.datasocket is not None:
self.datasocket.set_point_now('setpoint', setpoint)
def set_filament_voltage(self, U):
""" Set the filament voltage """
return(self.filament['device'].set_voltage(U))
def read_filament_voltage(self):
""" Read the filament voltage """
return(self.filament['device'].read_actual_voltage())
def read_filament_current(self):
""" Read the filament current """
return(self.filament['device'].read_actual_current())
def read_grid_voltage(self):
"""Read the actual grid voltage """
return(self.bias['device'].read_actual_voltage())
def read_grid_current(self):
""" Read the grid current as measured by power supply """
return(self.bias['device'].read_actual_current())
def read_emission_current(self):
""" Read the actual emission current """
value = self.adc.read_voltage(5)
self.measured_voltage = value
current = 1000.0 * value / 3.4 # Resistance value read off component label
return(current)
def run(self):
while self.running:
#time.sleep(0.1)
t = time.time()
self.emission_current = self.read_emission_current()
self.wanted_voltage = self.pid.wanted_power(self.emission_current) + self.filament['idle_voltage']
self.pid.update_setpoint(self.setpoint)
self.set_filament_voltage(self.wanted_voltage)
self.filament['voltage'] = self.read_filament_voltage()
self.filament['current'] = self.read_filament_current()
self.bias['grid_voltage'] = self.read_grid_voltage()
self.bias['grid_current'] = self.read_grid_current()
if self.datasocket is not None:
self.datasocket.set_point_now('emission', self.emission_current)
self.looptime = time.time() - t
self.setpoint = 0
self.set_filament_voltage(0)
self.set_bias(0)
while not self.quit:
temp_hot = 0
temp_cold = 0
for _ in range(0, 4):
temp_hot += adc_instance.read_voltage(1)
temp_cold += adc_instance.read_voltage(2)
self.hot = (temp_hot / 4 - 0.4) / 0.0195
self.cold = (temp_cold / 4 - 0.4) / 0.0195 - 3.5
logging.basicConfig(filename="logger.txt", level=logging.ERROR)
logging.basicConfig(level=logging.ERROR)
i2c_helper = ABEHelpers()
bus = i2c_helper.get_smbus()
adc_instance = DeltaSigma(bus, 0x68, 0x69, 18)
tempreader = TemperatureReader(adc_instance)
tempreader.daemon = True
tempreader.start()
codenames = ['cooling_water_hot', 'cooling_water_cold']
loggers = {}
for i in range(0, 2):
loggers[codenames[i]] = ValueLogger(tempreader, comp_val=0.5, channel=i)
loggers[codenames[i]].start()
socket = DateDataPullSocket('hall_cooling_water_temp',
codenames,
timeouts=[2.0, 2.0])
socket.start()