def openCsvFile(self):
if not os.path.isdir('./data'):
# create the data directory
os.mkdir('./data')
filename = "./data/mcc134_test_" + datetime.datetime.now().strftime(
"%d-%m-%Y_%H-%M-%S") + ".csv"
self.csvfile = open(filename, 'w')
mystr = ("Time," + ",".join("TC {}".format(channel) for channel in
range(mcc134.info().NUM_AI_CHANNELS)) +
"," + ",".join("CJC {}".format(channel) for channel in
range(mcc134.info().NUM_AI_CHANNELS)) +
",Status\n")
self.csvfile.write(mystr)
def pressedOpenButton(self):
if self.open_button.cget('text') == "Open":
# Open the selected device
address = int(self.device_variable.get())
if self.openDevice(address):
self.device_open = True
self.open_address = address
self.enableControls()
# read the TC types
for index in range(mcc134.info().NUM_AI_CHANNELS):
tc_type = self.board.tc_type_read(index)
self.tc_type_vars[index].set(
self.tc_types_reversed[tc_type])
if tc_type == TcTypes.DISABLED:
self.channel_labels[index].config(state=DISABLED)
self.temperatures[index].config(state=DISABLED)
else:
self.channel_labels[index].config(state=NORMAL)
self.temperatures[index].config(state=NORMAL)
# Periodically read the inputs and update controls
self.updateInputs()
self.open_button.config(text="Close")
else:
messagebox.showerror("Error", "Could not open device.")
else:
if self.device_open:
self.closeDevice()
self.device_open = False
self.open_button.config(text="Open")
self.disableControls()
def updateDisplay(self):
for channel in range(mcc134.info().NUM_AI_CHANNELS):
self.tc_voltage_labels[channel].config(
text="{:.1f}".format(self.tc_voltages[channel]))
self.tc_failure_labels[channel].config(
text="{}".format(self.tc_failures[channel]))
self.cjc_temp_labels[channel].config(
text="{:.1f}".format(self.cjc_temps[channel]))
self.cjc_failure_labels[channel].config(
text="{}".format(self.cjc_failures[channel]))
self.cjc_error_labels[channel].config(
text="{:.1f}".format(self.cjc_errors[channel]))
self.baseline_temp_labels[channel].config(
text="{:.1f}".format(self.baseline_temps[channel]))
if self.current_failures > 0:
self.inst_pass_led.set(2)
self.pass_led.set(2)
else:
self.inst_pass_led.set(1)
#self.pass_id = self.master.after(500, self.passBlink)
self.software_error_label.config(
text="{}".format(self.software_errors))
self.test_count_label.config(text="{}".format(self.test_count))
def resetTest(self):
# Reset the error counters and restart
if self.id:
self.master.after_cancel(self.id)
if self.activity_id:
self.master.after_cancel(self.activity_id)
#if self.pass_id:
# self.master.after_cancel(self.pass_id)
if self.csvfile:
self.csvfile.close()
self.csfvile = None
self.board = None
self.device_open = False
self.tc_voltages = [0.0]*mcc134.info().NUM_AI_CHANNELS
self.tc_failures = [0]*mcc134.info().NUM_AI_CHANNELS
self.cjc_temps = [0.0]*mcc134.info().NUM_AI_CHANNELS
self.cjc_errors = [0.0]*mcc134.info().NUM_AI_CHANNELS
self.baseline_temps = [0.0]*mcc134.info().NUM_AI_CHANNELS
self.cjc_failures = [0]*mcc134.info().NUM_AI_CHANNELS
self.test_count = 0
self.software_errors = 0
self.baseline_set = False
self.watchdog_count = 0
self.pass_led.set(1)
self.inst_pass_led.set(0)
self.ready_led.set(0)
self.master.after(500, self.establishBaseline)
def initBoard(self):
# Try to initialize the device
try:
self.board = mcc134(0)
serial = self.board.serial()
self.serial_number.set(serial)
for channel in range(mcc134.info().NUM_AI_CHANNELS):
self.board.tc_type_write(channel, TcTypes.TYPE_T)
self.ready_led.set(1)
self.device_open = True
except:
self.software_errors += 1
self.current_failures += 1
def updateInputs(self):
if self.device_open:
# Read the enabled channels
for channel in range(mcc134.info().NUM_AI_CHANNELS):
if self.tc_type_vars[channel].get() != 'Disabled':
value = self.board.t_in_read(channel)
if value == mcc134.OPEN_TC_VALUE:
text = "Open"
elif value == mcc134.OVERRANGE_TC_VALUE:
text = "Overrange"
elif value == mcc134.COMMON_MODE_TC_VALUE:
text = "Common mode error"
else:
text = "{:.2f}".format(value)
self.temperatures[channel].config(text=text)
# call this every second
self.job = self.master.after(1000, self.updateInputs)
def establishBaseline(self):
self.id = None
self.current_failures = 0
if self.device_open:
self.activity_led.set(1)
self.activity_id = self.master.after(100, self.activityBlink)
self.current_failures = 0
try:
for channel in range(mcc134.info().NUM_AI_CHANNELS):
# read the cjc value
self.cjc_temps[channel] = self.board.cjc_read(channel)
self.baseline_temps[channel] = self.cjc_temps[channel]
self.baseline_set = True
self.watchdog_count = 0
# Create csv file with current date/time in file name
self.openCsvFile()
# go to the test loop
self.id = self.master.after(1000, self.updateInputs)
except FileNotFoundError:
messagebox.showerror("Error", "Cannot create CSV file")
except:
self.software_errors += 1
self.current_failures += 1
self.watchdog_count += 1
# try again
self.id = self.master.after(1000, self.establishBaseline)
self.updateDisplay()
else:
# Open the device
self.initBoard()
# schedule another attempt
self.id = self.master.after(500, self.establishBaseline)
def __init__(self, master):
self.master = master
master.title("MCC 134 Control Panel")
# Initialize variables
self.device_open = False
self.open_address = 0
self.board = None
self.job = None
self.tc_types = {
"J": TcTypes.TYPE_J,
"K": TcTypes.TYPE_K,
"T": TcTypes.TYPE_T,
"E": TcTypes.TYPE_E,
"R": TcTypes.TYPE_R,
"S": TcTypes.TYPE_S,
"B": TcTypes.TYPE_B,
"N": TcTypes.TYPE_N,
"Disabled": TcTypes.DISABLED
}
self.tc_types_reversed = dict(map(reversed, self.tc_types.items()))
# GUI Setup
self.bold_font = tkinter.font.Font(
family=tkinter.font.nametofont("TkDefaultFont")["family"],
size=tkinter.font.nametofont("TkDefaultFont")["size"],
weight="bold")
# Create and organize frames
self.top_frame = tkinter.LabelFrame(master, text="Select Device")
self.top_frame.pack(expand=False, fill=tkinter.X)
self.mid_frame = tkinter.LabelFrame(master, text="TC Types")
self.mid_frame.pack(expand=False, fill=tkinter.X)
self.bottom_frame = tkinter.LabelFrame(master,
text="Temperature Inputs")
self.bottom_frame.pack(expand=True, fill=tkinter.BOTH)
# Create widgets
self.dev_label = tkinter.Label(self.top_frame, text="MCC 134 address:")
self.dev_label.grid(row=0, column=0)
self.open_button = tkinter.Button(self.top_frame,
text="Open",
width=6,
command=self.pressed_open_button)
# Get list of MCC 134 devices for the device list widget
self.addr_list = self.list_devices()
if not self.addr_list:
self.device_lister = tkinter.Label(self.top_frame,
text="None found")
self.open_button.config(state=tkinter.DISABLED)
else:
self.device_variable = tkinter.StringVar(self.top_frame)
self.device_variable.set(self.addr_list[0])
self.device_lister = tkinter.OptionMenu(self.top_frame,
self.device_variable,
*self.addr_list)
self.device_lister.grid(row=0, column=1)
self.open_button.grid(row=0, column=2)
self.channel_labels = []
self.tc_type_options = []
self.temperatures = []
self.tc_type_vars = []
tc_choices = ("J", "K", "T", "E", "R", "S", "B", "N", "Disabled")
for index in range(mcc134.info().NUM_AI_CHANNELS):
# TC types and labels
label = tkinter.Label(self.mid_frame, text="Ch {}".format(index))
label.grid(row=index, column=0)
self.tc_type_vars.append(tkinter.StringVar(self.mid_frame))
self.tc_type_vars[index].set(tc_choices[0])
self.tc_type_options.append(
tkinter.OptionMenu(self.mid_frame,
self.tc_type_vars[index],
*tc_choices,
command=lambda value, index=index: self.
pressed_tc(value, index)))
self.tc_type_options[index].grid(row=index, column=1)
self.tc_type_options[index].grid_configure(sticky="E")
# Labels
self.channel_labels.append(
tkinter.Label(self.bottom_frame,
text="Ch {}".format(index),
font=self.bold_font))
self.channel_labels[index].grid(row=index, column=1)
self.channel_labels[index].grid_configure(sticky="W")
# Temperatures
self.temperatures.append(
tkinter.Label(self.bottom_frame,
text="0.00",
font=self.bold_font))
self.temperatures[index].grid(row=index, column=3)
self.temperatures[index].grid_configure(sticky="E")
self.bottom_frame.grid_rowconfigure(index, weight=1)
self.mid_frame.grid_columnconfigure(1, weight=1)
self.bottom_frame.grid_columnconfigure(1, weight=1)
self.bottom_frame.grid_columnconfigure(2, weight=1)
self.bottom_frame.bind("<Configure>", self.resize_text)
# Disable widgets until a device is opened
self.disable_controls()
master.protocol('WM_DELETE_WINDOW', self.close) # exit cleanup
icon = tkinter.PhotoImage(file='/usr/share/mcc/daqhats/icon.png')
# pylint: disable=protected-access
master.tk.call('wm', 'iconphoto', master._w, icon)
def __init__(self, master):
self.master = master
master.title("MCC 134 CE Test")
# Initialize variables
self.device_open = False
self.board = None
self.tc_limit = DEFAULT_TC_LIMIT
self.cjc_limit = DEFAULT_CJC_LIMIT
self.tc_voltages = [0.0]*mcc134.info().NUM_AI_CHANNELS
self.tc_failures = [0]*mcc134.info().NUM_AI_CHANNELS
self.cjc_temps = [0.0]*mcc134.info().NUM_AI_CHANNELS
self.cjc_errors = [0.0]*mcc134.info().NUM_AI_CHANNELS
self.baseline_temps = [0.0]*mcc134.info().NUM_AI_CHANNELS
self.cjc_failures = [0]*mcc134.info().NUM_AI_CHANNELS
self.test_count = 0
self.software_errors = 0
self.baseline_set = False
self.watchdog_count = 0
self.csvfile = None
# GUI Setup
# Device Frame
self.device_frame = LabelFrame(master, text="Device status")
#self.device_frame.pack(side=TOP, expand=False, fill=X)
self.device_frame.grid(row=0, column=0, padx=3, pady=3,
sticky="NSEW")
# Device widgets
label = Label(self.device_frame, text="Serial number:")
label.grid(row=0, column=0, padx=3, pady=3, sticky="E")
self.serial_number = StringVar(self.device_frame, "00000000")
label = Label(self.device_frame, width=8, textvariable=self.serial_number,
relief=SUNKEN)
label.grid(row=0, column=1, padx=3, pady=3, ipadx=2, ipady=2)
label = Label(self.device_frame, text="Software errors:")
label.grid(row=1, column=0, padx=3, pady=3, sticky="E")
self.software_error_label = Label(
self.device_frame, width=8, text="0", relief=SUNKEN)
self.software_error_label.grid(row=1, column=1, padx=3, pady=3,
ipadx=2, ipady=2)
label = Label(self.device_frame, text="Ready:")
label.grid(row=0, column=3, padx=3, pady=3, sticky="E")
self.ready_led = LED(self.device_frame, size=20)
self.ready_led.grid(row=0, column=4, padx=3, pady=3)
label = Label(self.device_frame, text="Activity:")
label.grid(row=1, column=3, padx=3, pady=3, sticky="E")
self.activity_led = LED(self.device_frame, size=20)
self.activity_led.grid(row=1, column=4, padx=3, pady=3)
# empty column for stretching
self.device_frame.grid_columnconfigure(2, weight=1)
# Test Frame
self.test_frame = LabelFrame(master, text="Test status")
self.test_frame.grid(row=0, column=1, columnspan=2,
sticky="NSEW", padx=3, pady=3)
# Test widgets
label = Label(self.test_frame, text="Pass/fail (latch):")
label.grid(row=0, column=0, padx=3, pady=3, sticky="E")
self.pass_led = LED(self.test_frame, size=20)
self.pass_led.grid(row=0, column=1, padx=3, pady=3)
label = Label(self.test_frame, text="Pass/fail (inst):")
label.grid(row=1, column=0, padx=3, pady=3, sticky="E")
self.inst_pass_led = LED(self.test_frame, size=20)
self.inst_pass_led.grid(row=1, column=1, padx=3, pady=3)
label = Label(self.test_frame, text="Test count:")
label.grid(row=0, column=2, padx=3, pady=3, sticky="E")
self.test_count_label = Label(self.test_frame, width=8,
text="0", relief=SUNKEN)
self.test_count_label.grid(row=0, column=3, padx=3, pady=3)
self.stop_button = Button(self.test_frame, text="Stop", fg="red",
command=self.stopTest)
self.stop_button.grid(row=0, column=4, padx=3, pady=3, sticky="NSEW")
self.reset_button = Button(self.test_frame, text="Reset",
command=self.resetTest)
self.reset_button.grid(row=1, column=4, padx=3, pady=3, sticky="NSEW")
v = IntVar()
self.watchdog_check = Checkbutton(
self.test_frame, text="Use watchdog", variable=v)
self.watchdog_check.var = v
self.watchdog_check.grid(row=1, column=2, columnspan=2, padx=3, pady=3,
sticky="W")
# TC Frame
self.tc_frame = LabelFrame(master, text="Thermocouple Inputs")
#self.tc_frame.pack(side=BOTTOM, expand=True, fill=BOTH)
self.tc_frame.grid(row=1, column=0, sticky="NSEW", padx=3, pady=3)
# TC widgets
label = Label(self.tc_frame, text="Limit: ±")
label.grid(row=0, column=0, padx=3, pady=3, sticky="E")
label = Label(self.tc_frame, text="{:.1f}".format(self.tc_limit),
relief=SUNKEN, anchor=E, width=8)
label.grid(row=0, column=1, padx=3, pady=3, ipadx=2, ipady=2)
label = Label(self.tc_frame, text="Channel")
label.grid(row=1, column=0, padx=3, pady=3)
label = Label(self.tc_frame, text="Current")
label.grid(row=1, column=1, padx=3, pady=3)
label = Label(self.tc_frame, text="Failures")
label.grid(row=1, column=2, padx=3, pady=3)
self.tc_voltage_labels = []
self.tc_failure_labels = []
for index in range(mcc134.info().NUM_AI_CHANNELS):
# Labels
label = Label(self.tc_frame, text="{}".format(index))
label.grid(row=index+2, column=0, padx=3, pady=3)
#label.grid_configure(sticky="W")
# TC Voltages
self.tc_voltage_labels.append(Label(self.tc_frame, width=8, anchor=E,
text="0.0", relief=SUNKEN))
self.tc_voltage_labels[index].grid(row=index+2, column=1, padx=3,
pady=3, ipadx=2, ipady=2)
self.tc_voltage_labels[index].grid_configure(sticky="E")
self.tc_failure_labels.append(Label(self.tc_frame, width=8, anchor=E,
relief=SUNKEN, text="0"))
self.tc_failure_labels[index].grid(row=index+2, column=2, padx=3,
pady=3, ipadx=2, ipady=2)
#self.tc_frame.grid_rowconfigure(index, weight=1)
#self.tc_frame.grid_columnconfigure(1, weight=1)
#self.tc_frame.grid_columnconfigure(2, weight=1)
# CJC Frame
self.cjc_frame = LabelFrame(master, text="CJC Sensors")
#self.cjc_frame.pack(side=BOTTOM, expand=True, fill=BOTH)
self.cjc_frame.grid(row=1, column=1, sticky="NSEW", padx=3, pady=3)
# CJC widgets
label = Label(self.cjc_frame, text="Limit: ±")
label.grid(row=0, column=2, padx=3, pady=3, sticky="E")
label = Label(self.cjc_frame, relief=SUNKEN, anchor=E, width=6,
text="{:.1f}".format(self.cjc_limit))
label.grid(row=0, column=3, padx=3, pady=3, ipadx=2, ipady=2, sticky="NSEW")
label = Label(self.cjc_frame, text="Channel")
label.grid(row=1, column=0, padx=3, pady=3)
label = Label(self.cjc_frame, text="Baseline")
label.grid(row=1, column=1, padx=3, pady=3)
label = Label(self.cjc_frame, text="Current")
label.grid(row=1, column=2, padx=3, pady=3)
label = Label(self.cjc_frame, text="Difference")
label.grid(row=1, column=3, padx=3, pady=3)
label = Label(self.cjc_frame, text="Failures")
label.grid(row=1, column=4, padx=3, pady=3)
self.baseline_temp_labels = []
self.cjc_temp_labels = []
self.cjc_error_labels = []
self.cjc_failure_labels = []
for index in range(mcc134.info().NUM_AI_CHANNELS):
label = Label(self.cjc_frame, text="{}".format(index))
label.grid(row=index+2, column=0, padx=3, pady=3)
#label.grid_configure(sticky="W")
self.baseline_temp_labels.append(Label(self.cjc_frame, width=6,
anchor=E, text="0.0",
relief=SUNKEN))
self.baseline_temp_labels[index].grid(row=index+2, column=1, padx=3,
pady=3, ipadx=2, ipady=2, sticky="NSEW")
#self.baseline_temp_labels[index].grid_configure(sticky="E")
self.cjc_temp_labels.append(Label(self.cjc_frame, width=6, anchor=E,
text="0.0", relief=SUNKEN))
self.cjc_temp_labels[index].grid(row=index+2, column=2, padx=3, pady=3,
ipadx=2, ipady=2, sticky="NSEW")
#self.cjc_temp_labels[index].grid_configure(sticky="E")
self.cjc_error_labels.append(Label(self.cjc_frame, width=6, anchor=E,
text="0.0", relief=SUNKEN))
self.cjc_error_labels[index].grid(row=index+2, column=3, padx=3, pady=3,
ipadx=2, ipady=2, sticky="NSEW")
#self.cjc_error_labels[index].grid_configure(sticky="E")
self.cjc_failure_labels.append(Label(self.cjc_frame, width=8, anchor=E,
relief=SUNKEN, text="0"))
self.cjc_failure_labels[index].grid(row=index+2, column=4, padx=3,
pady=3, ipadx=2, ipady=2, sticky="NSEW")
master.protocol('WM_DELETE_WINDOW', self.close) # exit cleanup
icon = PhotoImage(file='/usr/share/mcc/daqhats/icon.png')
master.tk.call('wm', 'iconphoto', master._w, icon)
self.pass_led.set(1)
self.master.after(500, self.establishBaseline)
def updateInputs(self):
self.id = None
if self.device_open:
self.activity_led.set(1)
self.activity_id = self.master.after(100, self.activityBlink)
self.current_failures = 0
logstr = datetime.datetime.now().strftime("%H:%M:%S") + ","
try:
for channel in range(mcc134.info().NUM_AI_CHANNELS):
# read the tc value
self.tc_voltages[channel] = self.board.a_in_read(channel) * 1e6
# read the cjc value
self.cjc_temps[channel] = self.board.cjc_read(channel)
self.watchdog_count = 0
if self.baseline_set == True:
# compare to limits
tc_voltage = self.tc_voltages[channel]
if (tc_voltage > self.tc_limit) or (tc_voltage < -self.tc_limit):
self.current_failures += 1
self.tc_failures[channel] += 1
self.cjc_errors[channel] = (self.cjc_temps[channel] -
self.baseline_temps[channel])
cjc_error = self.cjc_errors[channel]
if (cjc_error > self.cjc_limit) or (cjc_error < -self.cjc_limit):
self.current_failures += 1
self.cjc_failures[channel] += 1
logstr += (",".join(
"{:.1f}".format(value) for value in self.tc_voltages) +
"," + ",".join(
"{:.1f}".format(value) for value in self.cjc_temps) +
",\n")
except:
self.software_errors += 1
self.current_failures += 1
self.watchdog_count += 1
logstr += ",,,,,,,,Software error\n"
self.csvfile.write(logstr)
self.test_count += 1
self.updateDisplay()
if (self.watchdog_check.var.get() == 1 and
self.watchdog_count >= 5):
self.board = None
self.device_open = False
self.watchdog_count = 0
self.ready_led.set(0)
self.master.after(500, self.updateInputs)
else:
# schedule another update in 1 s
self.id = self.master.after(1000, self.updateInputs)
else:
# Open the device
self.initBoard()
# schedule another attempt
self.id = self.master.after(500, self.updateInputs)