def __init__(self,file_name,temp_sensor_id):
self.exit_event = threading.Event()
self.usb_device_filename=file_name
self.serialPort=None
self.temp_sensor = TempSensor(temp_sensor_id)
self.set_voltage_val = LockedThing(0.0)
self.set_current_val = LockedThing(0.0)
self.output_voltage_val = LockedThing(0.0)
self.output_current_val = LockedThing(0.0)
self.in_cc_mode_val = LockedThing(0.0)
self.enabled_val = LockedThing(False)
self.temp_val = LockedThing(0.0)
self.pause_lock = threading.Condition()
self.paused = False
if sys.version_info[0] < 3:
self.command_queue = Queue.Queue()
else:
self.command_queue = queue.Queue()
self.update_count = 0
threading.Thread.__init__(self)
def __init__(self, channelNumber, file_name, temp_sensor_id):
self.exit_event = threading.Event()
self.usb_device_filename = file_name
self.serialPort = None
self.temp_sensor = TempSensor(temp_sensor_id)
self.set_voltage_val = LockedThing(0.0)
self.set_current_val = LockedThing(0.0)
self.output_voltage_val = LockedThing(0.0)
self.output_current_val = LockedThing(0.0)
self.in_cc_mode_val = LockedThing(0.0)
self.enabled_val = LockedThing(False)
self.temp_val = LockedThing(0.0)
self.pause_lock = threading.Condition()
self.paused = False
print("Channel about to load settings")
self.channel_settings = ChannelSettings(channelNumber)
self.loaded_settings = False
if sys.version_info[0] < 3:
self.command_queue = Queue.Queue()
else:
self.command_queue = queue.Queue()
self.update_count = 0
threading.Thread.__init__(self)
class PowerSupplyChannel(threading.Thread):
VSET_COMMAND = "Vset"
ISET_COMMAND = "Iset"
VOUT_COMMAND = "Vout"
IOUT_COMMAND = "Iout"
CCMODE_COMMAND = "CCMode"
ENABLE_COMMAND = "Enable"
VOLTAGE_DECIMALS = 3
CURRENT_DECIMALS = 4
VDAC_COMMAND = "VDAC"
VADC_COMMAND = "VADC"
IDAC_COMMAND = "IDAC"
IADC_COMMAND = "IADC"
POLL_PERIOD = 0.1
VOLTS_DAC_CAL_COMMAND = "VDACCal"
VOLTS_ADC_CAL_COMMAND = "VADCCal"
CURRENT_DAC_CAL_COMMAND = "IDACCal"
CURRENT_ADC_CAL_COMMAND = "IADCCal"
def __init__(self, channelNumber, file_name, temp_sensor_id):
self.exit_event = threading.Event()
self.usb_device_filename = file_name
self.serialPort = None
self.temp_sensor = TempSensor(temp_sensor_id)
self.set_voltage_val = LockedThing(0.0)
self.set_current_val = LockedThing(0.0)
self.output_voltage_val = LockedThing(0.0)
self.output_current_val = LockedThing(0.0)
self.in_cc_mode_val = LockedThing(0.0)
self.enabled_val = LockedThing(False)
self.temp_val = LockedThing(0.0)
self.pause_lock = threading.Condition()
self.paused = False
print("Channel about to load settings")
self.channel_settings = ChannelSettings(channelNumber)
self.loaded_settings = False
if sys.version_info[0] < 3:
self.command_queue = Queue.Queue()
else:
self.command_queue = queue.Queue()
self.update_count = 0
threading.Thread.__init__(self)
def run(self):
while not self.exit_event.wait(self.POLL_PERIOD):
self.pause_lock.acquire()
while self.paused:
self.pause_lock.wait()
self.pause_lock.release()
#
# If we are not currently connected then try and connect
#
if self.serialPort is None:
self._connect()
# If we connected or if we already were connected then do
# the update
if self.serialPort is not None:
try:
if not self.loaded_settings:
self._load_settings()
self._process_commands()
self._update_from_channel()
except Exception as e:
# Something failed - just disconnect and re-connect
# on the next round
self.serialPort = None
traceback.print_exc(file=sys.stdout)
# exc_type, exc_obj, exc_tb = sys.exc_info()
# fname = os.path.split(exc_tb.tb_frame.f_code.co_filename)[1]
# print("Caught error in loop - disconnecting", exc_type, fname, exc_tb.tb_lineno)
# print("Caught error in loop - disconnecting", str(e), sys.exc_info()[0])
print("Channel exiting")
def _process_commands(self):
while not self.command_queue.empty():
command = self.command_queue.get()
# If we are not connected we just swallow any outstanding commands
# This is so we don't end up with a back-log if the user does stuff
# while not connected
if self.is_connected():
self.call_set_command(command[0], command[1])
def _update_from_channel(self):
self.set_voltage_val.set_value(
round(float(self.call_get_command_float(self.VSET_COMMAND)),
self.VOLTAGE_DECIMALS))
self.set_current_val.set_value(
round(float(self.call_get_command_float(self.ISET_COMMAND)),
self.CURRENT_DECIMALS))
self.output_voltage_val.set_value(
round(float(self.call_get_command_float(self.VOUT_COMMAND)),
self.VOLTAGE_DECIMALS))
self.output_current_val.set_value(
round(float(self.call_get_command_float(self.IOUT_COMMAND)),
self.CURRENT_DECIMALS))
self.in_cc_mode_val.set_value(
self.call_get_command_bool(self.CCMODE_COMMAND))
self.enabled_val.set_value(
self.call_get_command_bool(self.ENABLE_COMMAND))
# Throttle temperature updates to one in 5
if self.update_count == 5:
self.temp_val.set_value(self.temp_sensor.read_temp())
self.update_count = 0
else:
self.update_count += 1
def _load_settings(self):
self.loaded_settings = True
self.set_set_voltage(self.channel_settings.get_voltage())
self.set_set_current(self.channel_settings.get_current())
def stop(self):
self.pause_lock.acquire()
self.paused = False
self.pause_lock.notify()
self.pause_lock.release()
self.exit_event.set()
self.join()
def pause(self, paused):
self.pause_lock.acquire()
self.paused = paused
self.pause_lock.notify()
self.pause_lock.release()
# Don't call this - the thread will manage the connection
def _connect(self):
try:
self.serialPort = serial.Serial(port=self.usb_device_filename,
baudrate=115200,
parity=serial.PARITY_NONE,
stopbits=serial.STOPBITS_ONE,
bytesize=serial.EIGHTBITS)
print("Connected to " + self.usb_device_filename)
except Exception:
print("Connect to %s failed" % self.usb_device_filename)
self.serialPort = None
def _close(self):
self.serialPort = None
def is_connected(self):
return self.serialPort is not None
def get_set_voltage(self):
return self.set_voltage_val.get_value()
def set_set_voltage(self, voltage):
self.channel_settings.set_voltage(voltage)
self.command_queue.put((self.VSET_COMMAND, str(voltage)))
def get_set_current(self):
return self.set_current_val.get_value()
def set_set_current(self, current):
self.channel_settings.set_current(current)
self.command_queue.put((self.ISET_COMMAND, str(current)))
def get_output_voltage(self):
return self.output_voltage_val.get_value()
def get_output_current(self):
return self.output_current_val.get_value()
def in_cc_mode(self):
return self.in_cc_mode_val.get_value()
def enable(self, enabled):
self.command_queue.put((self.ENABLE_COMMAND, str(enabled)))
def set_voltage_dac(self, count):
self.call_set_command(self.VDAC_COMMAND, ("%x" % count))
def get_voltage_adc(self):
return int(self.call_get_command(self.VADC_COMMAND), 16)
def set_current_dac(self, count):
self.call_set_command(self.IDAC_COMMAND, ("%x" % count))
def get_current_adc(self):
return int(self.call_get_command(self.IADC_COMMAND), 16)
def is_enabled(self):
return self.enabled_val.get_value()
def get_temperature(self):
return self.temp_sensor.read_temp()
def set_voltage_dac_cal_points(self, numPoints):
param = ("numpoints,%d" % numPoints)
print("Setting %s=%s", (self.VOLTS_DAC_CAL_COMMAND, param))
self.call_set_command(self.VOLTS_DAC_CAL_COMMAND, param)
def set_voltage_dac_cal(self, index, code, measurement):
param = ("%d,%x,%f" % (index, code, measurement))
print("Setting %s=%s", (self.VOLTS_DAC_CAL_COMMAND, param))
self.call_set_command(self.VOLTS_DAC_CAL_COMMAND, param)
def save_voltage_dac_cal(self):
print("Setting %s=%s", (self.VOLTS_DAC_CAL_COMMAND, "save"))
self.call_set_command(self.VOLTS_DAC_CAL_COMMAND, "save")
def set_voltage_adc_cal_points(self, numPoints):
self.call_set_command(self.VOLTS_ADC_CAL_COMMAND,
("numpoints,%d" % numPoints))
def set_voltage_adc_cal(self, index, code, measurement):
self.call_set_command(self.VOLTS_ADC_CAL_COMMAND,
("%d,%x,%f" % (index, code, measurement)))
def save_voltage_adc_cal(self):
self.call_set_command(self.VOLTS_ADC_CAL_COMMAND, "save")
def set_current_dac_cal_points(self, numPoints):
self.call_set_command(self.CURRENT_DAC_CAL_COMMAND,
("numpoints,%d" % numPoints))
def set_current_dac_cal(self, index, code, measurement):
self.call_set_command(self.CURRENT_DAC_CAL_COMMAND,
("%d,%x,%f" % (index, code, measurement)))
def save_current_dac_cal(self):
self.call_set_command(self.CURRENT_DAC_CAL_COMMAND, "save")
def set_current_adc_cal_points(self, numPoints):
self.call_set_command(self.CURRENT_ADC_CAL_COMMAND,
("numpoints,%d" % numPoints))
def set_current_adc_cal(self, index, code, measurement):
self.call_set_command(self.CURRENT_ADC_CAL_COMMAND,
("%d,%x,%f" % (index, code, measurement)))
def save_current_adc_cal(self):
self.call_set_command(self.CURRENT_ADC_CAL_COMMAND, "save")
def cal_enable(self, enabled):
self.call_set_command(self.ENABLE_COMMAND, str(enabled))
def call_set_command(self, command, value):
command_string = command + "=" + value + "\n"
# print('call_set_command, Command='+command_string)
self.serialPort.write(command_string.encode('utf-8'))
self.serialPort.readline()
self.serialPort.readline()
def call_get_command_float(self, command):
value = self.call_get_command(command)
return float(value)
def call_get_command_bool(self, command):
value = self.call_get_command(command)
return value.lower() == "true"
def call_get_command(self, command):
command_string = command + "=?\n"
# print("call_get_command, Command = "+command_string)
self.serialPort.write(command_string.encode('utf-8'))
self.serialPort.readline()
return_string = self.serialPort.readline().decode('utf-8')
return_string = return_string.split("=")[1]
return_string = return_string.rstrip()
return return_string
class PowerSupplyChannel(threading.Thread):
VSET_COMMAND="Vset"
ISET_COMMAND="Iset"
VOUT_COMMAND="Vout"
IOUT_COMMAND="Iout"
CCMODE_COMMAND="CCMode"
ENABLE_COMMAND="Enable"
VOLTAGE_DECIMALS=3
CURRENT_DECIMALS=4
VDAC_COMMAND="VDAC"
VADC_COMMAND="VADC"
IDAC_COMMAND="IDAC"
IADC_COMMAND="IADC"
POLL_PERIOD=0.1
VOLTS_DAC_CAL_COMMAND="VDACCal"
VOLTS_ADC_CAL_COMMAND="VADCCal"
CURRENT_DAC_CAL_COMMAND="IDACCal"
CURRENT_ADC_CAL_COMMAND="IADCCal"
def __init__(self,file_name,temp_sensor_id):
self.exit_event = threading.Event()
self.usb_device_filename=file_name
self.serialPort=None
self.temp_sensor = TempSensor(temp_sensor_id)
self.set_voltage_val = LockedThing(0.0)
self.set_current_val = LockedThing(0.0)
self.output_voltage_val = LockedThing(0.0)
self.output_current_val = LockedThing(0.0)
self.in_cc_mode_val = LockedThing(0.0)
self.enabled_val = LockedThing(False)
self.temp_val = LockedThing(0.0)
self.pause_lock = threading.Condition()
self.paused = False
if sys.version_info[0] < 3:
self.command_queue = Queue.Queue()
else:
self.command_queue = queue.Queue()
self.update_count = 0
threading.Thread.__init__(self)
def run(self):
while not self.exit_event.wait(self.POLL_PERIOD):
self.pause_lock.acquire()
while self.paused:
self.pause_lock.wait()
self.pause_lock.release()
#
# If we are not currently connected then try and connect
#
if self.serialPort is None:
self._connect()
# If we connected or if we already were connected then do
# the update
if self.serialPort is not None:
try:
self._process_commands()
self._update_from_channel()
except Exception:
# Something failed - just disconnect and re-connect
# on the next round
self.serialPort = None
print("Caught error in loop - disconnecting", sys.exc_info()[0])
print("Channel exiting")
def _process_commands(self):
while not self.command_queue.empty():
command = self.command_queue.get()
# If we are not connected we just swallow any outstanding commands
# This is so we don't end up with a back-log if the user does stuff
# while not connected
if self.is_connected():
self.call_set_command(command[0],command[1])
def _update_from_channel(self):
self.set_voltage_val.set_value(round(
float(self.call_get_command_float(self.VSET_COMMAND)),
self.VOLTAGE_DECIMALS))
self.set_current_val.set_value(round(
float(self.call_get_command_float(self.ISET_COMMAND)),
self.CURRENT_DECIMALS))
self.output_voltage_val.set_value(round(
float(self.call_get_command_float(self.VOUT_COMMAND)),
self.VOLTAGE_DECIMALS))
self.output_current_val.set_value(round(
float(self.call_get_command_float(self.IOUT_COMMAND)),
self.CURRENT_DECIMALS))
self.in_cc_mode_val.set_value(self.call_get_command_bool(self.CCMODE_COMMAND))
self.enabled_val.set_value(self.call_get_command_bool(self.ENABLE_COMMAND))
# Throttle temperature updates to one in 5
if self.update_count == 5:
self.temp_val.set_value(self.temp_sensor.read_temp())
self.update_count = 0
else:
self.update_count += 1
def stop(self):
self.pause_lock.acquire()
self.paused = False
self.pause_lock.notify()
self.pause_lock.release()
self.exit_event.set()
self.join()
def pause(self,paused):
self.pause_lock.acquire()
self.paused = paused
self.pause_lock.notify()
self.pause_lock.release()
# Don't call this - the thread will manage the connection
def _connect(self):
try:
self.serialPort = serial.Serial(
port=self.usb_device_filename,
baudrate=115200,
parity=serial.PARITY_NONE,
stopbits=serial.STOPBITS_ONE,
bytesize=serial.EIGHTBITS )
except Exception :
print("Connect to %s failed" % self.usb_device_filename)
self.serialPort = None
def _close(self):
self.serialPort = None
def is_connected(self):
return self.serialPort is not None;
def get_set_voltage(self):
return self.set_voltage_val.get_value()
def set_set_voltage(self,voltage):
self.command_queue.put((self.VSET_COMMAND,str(voltage)))
def get_set_current(self):
return self.set_current_val.get_value()
def set_set_current(self,current):
self.command_queue.put((self.ISET_COMMAND,str(current)))
def get_output_voltage(self):
return self.output_voltage_val.get_value()
def get_output_current(self):
return self.output_current_val.get_value()
def in_cc_mode(self):
return self.in_cc_mode_val.get_value()
def enable(self,enabled):
self.command_queue.put((self.ENABLE_COMMAND,str(enabled)))
def set_voltage_dac(self,count):
self.call_set_command(self.VDAC_COMMAND,("%x" % count))
def get_voltage_adc(self):
return int(self.call_get_command(self.VADC_COMMAND),16)
def set_current_dac(self,count):
self.call_set_command(self.IDAC_COMMAND,("%x" % count))
def get_current_adc(self):
return int(self.call_get_command(self.IADC_COMMAND),16)
def is_enabled(self):
return self.enabled_val.get_value()
def get_temperature(self):
return self.temp_sensor.read_temp()
def set_voltage_dac_cal_points(self,numPoints):
param = ("numpoints,%d" % numPoints)
print("Setting %s=%s",(self.VOLTS_DAC_CAL_COMMAND,param))
self.call_set_command(self.VOLTS_DAC_CAL_COMMAND,param)
def set_voltage_dac_cal(self,index,code,measurement):
param = ("%d,%x,%f" % (index,code,measurement))
print("Setting %s=%s",(self.VOLTS_DAC_CAL_COMMAND,param))
self.call_set_command(self.VOLTS_DAC_CAL_COMMAND,param)
def save_voltage_dac_cal(self):
print("Setting %s=%s",(self.VOLTS_DAC_CAL_COMMAND,"save"))
self.call_set_command(self.VOLTS_DAC_CAL_COMMAND,"save")
def set_voltage_adc_cal_points(self,numPoints):
self.call_set_command(self.VOLTS_ADC_CAL_COMMAND,("numpoints,%d" % numPoints))
def set_voltage_adc_cal(self,index,code,measurement):
self.call_set_command(self.VOLTS_ADC_CAL_COMMAND,("%d,%x,%f" % (index,code,measurement)))
def save_voltage_adc_cal(self):
self.call_set_command(self.VOLTS_ADC_CAL_COMMAND,"save")
def set_current_dac_cal_points(self,numPoints):
self.call_set_command(self.CURRENT_DAC_CAL_COMMAND,("numpoints,%d" % numPoints))
def set_current_dac_cal(self,index,code,measurement):
self.call_set_command(self.CURRENT_DAC_CAL_COMMAND,("%d,%x,%f" % (index,code,measurement)))
def save_current_dac_cal(self):
self.call_set_command(self.CURRENT_DAC_CAL_COMMAND,"save")
def set_current_adc_cal_points(self,numPoints):
self.call_set_command(self.CURRENT_ADC_CAL_COMMAND,("numpoints,%d" % numPoints))
def set_current_adc_cal(self,index,code,measurement):
self.call_set_command(self.CURRENT_ADC_CAL_COMMAND,("%d,%x,%f" % (index,code,measurement)))
def save_current_adc_cal(self):
self.call_set_command(self.CURRENT_ADC_CAL_COMMAND,"save")
def cal_enable(self,enabled):
self.call_set_command(self.ENABLE_COMMAND,str(enabled))
def call_set_command(self,command,value):
command_string = command+"="+value+"\n"
self.serialPort.write(command_string)
self.serialPort.readline()
self.serialPort.readline()
def call_get_command_float(self,command):
value = self.call_get_command(command)
return float(value)
def call_get_command_bool(self,command):
value = self.call_get_command(command)
return value.lower() == "true"
def call_get_command(self,command):
command_string = command+"=?\n"
self.serialPort.write(command_string)
self.serialPort.readline()
return_string = self.serialPort.readline()
return_string = return_string.split("=")[1]
return_string = return_string.rstrip()
return return_string