QVariantList -> list & QVariantMap -> dict

Used for autoconnect

README.md

@@ -71,9 +71,8 @@ openocd -f interface/stlink.cfg -f target/stm32f4x.cfg -c "program target/thumbv
 
 A GUI has been developed for easy configuration and plotting of key parameters.
 
-The Python GUI program is located at pytec/tec_qt.py.
+The Python GUI program is located at pytec/tec_qt.py, and is developed based on the Python library pyqtgraph. The GUI can be configured and
-
+launched automatically by running:
-The GUI is developed based on the Python library pyqtgraph. The GUI can be configured and launched automatically by running:
 
 ```
 nix run .#thermostat_gui

flake.lock

@@ -3,11 +3,11 @@
     "mozilla-overlay": {
       "flake": false,
       "locked": {
-        "lastModified": 1690536331,
+        "lastModified": 1704373101,
-        "narHash": "sha256-aRIf2FB2GTdfF7gl13WyETmiV/J7EhBGkSWXfZvlxcA=",
+        "narHash": "sha256-+gi59LRWRQmwROrmE1E2b3mtocwueCQqZ60CwLG+gbg=",
         "owner": "mozilla",
         "repo": "nixpkgs-mozilla",
-        "rev": "db89c8707edcffefcd8e738459d511543a339ff5",
+        "rev": "9b11a87c0cc54e308fa83aac5b4ee1816d5418a2",
         "type": "github"
       },
       "original": {
@@ -18,11 +18,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1691421349,
+        "lastModified": 1704290814,
-        "narHash": "sha256-RRJyX0CUrs4uW4gMhd/X4rcDG8PTgaaCQM5rXEJOx6g=",
+        "narHash": "sha256-LWvKHp7kGxk/GEtlrGYV68qIvPHkU9iToomNFGagixU=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "011567f35433879aae5024fc6ec53f2a0568a6c4",
+        "rev": "70bdadeb94ffc8806c0570eb5c2695ad29f0e421",
         "type": "github"
       },
       "original": {

flake.nix

@@ -1,20 +1,25 @@
 {
   description = "Firmware for the Sinara 8451 Thermostat";
 
-  inputs.nixpkgs.url = github:NixOS/nixpkgs/nixos-23.05;
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.05";
-  inputs.mozilla-overlay = { url = github:mozilla/nixpkgs-mozilla; flake = false; };
+  inputs.mozilla-overlay = {
+    url = "github:mozilla/nixpkgs-mozilla";
+    flake = false;
+  };
 
-  outputs = { self, nixpkgs, mozilla-overlay }:
+  outputs = { self, nixpkgs, mozilla-overlay, }:
     let
-      pkgs = import nixpkgs { system = "x86_64-linux"; overlays = [ (import mozilla-overlay) ]; };
+      pkgs = import nixpkgs {
+        system = "x86_64-linux";
+        overlays = [ (import mozilla-overlay) ];
+      };
       rustManifest = pkgs.fetchurl {
-        url = "https://static.rust-lang.org/dist/2022-12-15/channel-rust-stable.toml";
+        url =
+          "https://static.rust-lang.org/dist/2022-12-15/channel-rust-stable.toml";
         hash = "sha256-S7epLlflwt0d1GZP44u5Xosgf6dRrmr8xxC+Ml2Pq7c=";
       };
 
-      targets = [
+      targets = [ "thumbv7em-none-eabihf" ];
-        "thumbv7em-none-eabihf"
-      ];
       rustChannelOfTargets = _channel: _date: targets:
         (pkgs.lib.rustLib.fromManifestFile rustManifest {
           inherit (pkgs) stdenv lib fetchurl patchelf;
@@ -35,7 +40,8 @@
         cargoLock = {
           lockFile = ./Cargo.lock;
           outputHashes = {
-            "stm32-eth-0.2.0" = "sha256-48RpZgagUqgVeKm7GXdk3Oo0v19ScF9Uby0nTFlve2o=";
+            "stm32-eth-0.2.0" =
+              "sha256-48RpZgagUqgVeKm7GXdk3Oo0v19ScF9Uby0nTFlve2o=";
           };
         };
 
@@ -79,6 +85,22 @@
         propagatedBuildInputs = with pkgs.python3Packages; [ numpy pyqt6 ];
       };
 
+      qtextras = pkgs.python3Packages.buildPythonPackage rec {
+        pname = "qtextras";
+        version = "0.6.8";
+        format = "pyproject";
+        src = pkgs.fetchPypi {
+          inherit pname version;
+          hash = "sha256-d1ZotSlOI4surUy0H0N4xHoq94IRQvMHunwRH1uubFg=";
+        };
+        buildInputs = [ pkgs.python3Packages.hatchling ];
+        propagatedBuildInputs = with pkgs.python3Packages; [
+          numpy
+          pyqtgraph
+          ruamel-yaml
+        ];
+      };
+
       pglive = pkgs.python3Packages.buildPythonPackage rec {
         pname = "pglive";
         version = "0.7.2";
@@ -91,6 +113,19 @@
         propagatedBuildInputs = [ pyqtgraph pkgs.python3Packages.numpy ];
       };
 
+      pytec-dev-wrappers = pkgs.runCommandNoCC "pytec-dev-wrappers" { } ''
+        mkdir -p $out/bin
+        for program in ${self}/pytec/*.py; do
+          if [ -x $program ]; then
+            progname=`basename -s .py $program`
+            outname=$out/bin/$progname
+            echo "#!${pkgs.bash}/bin/bash" >> $outname
+            echo "exec python3 -m pytec.$progname \"\$@\"" >> $outname
+            chmod 755 $outname
+          fi
+        done
+      '';
+
       thermostat_gui = pkgs.python3Packages.buildPythonPackage {
         pname = "thermostat_gui";
         version = "0.0.0";
@@ -98,7 +133,14 @@
         src = "${self}/pytec";
 
         nativeBuildInputs = [ pkgs.qt6.wrapQtAppsHook ];
-        propagatedBuildInputs = [ pkgs.qt6.qtbase ] ++ (with pkgs.python3Packages; [ pyqtgraph pyqt6 qasync pglive ]);
+        propagatedBuildInputs = [ pkgs.qt6.qtbase ]
+          ++ (with pkgs.python3Packages; [
+            pyqtgraph
+            pyqt6
+            qasync
+            pglive
+            qtextras
+          ]);
 
         dontWrapQtApps = true;
         postFixup = ''
@@ -106,26 +148,34 @@
         '';
       };
     in {
-      packages.x86_64-linux = {
+      packages.x86_64-linux = { inherit thermostat thermostat_gui; };
-        inherit thermostat thermostat_gui;
+
-      };
+      formatter.x86_64-linux = nixpkgs.legacyPackages.x86_64-linux.nixfmt;
 
       apps.x86_64-linux.thermostat_gui = {
         type = "app";
         program = "${self.packages.x86_64-linux.thermostat_gui}/bin/tec_qt";
       };
 
-      hydraJobs = {
+      hydraJobs = { inherit thermostat; };
-        inherit thermostat;
-      };
 
       devShell.x86_64-linux = pkgs.mkShell {
         name = "thermostat-dev-shell";
-        buildInputs = with pkgs; [
+        buildInputs = with pkgs;
-          rust openocd dfu-util
+          [ rust openocd dfu-util pytec-dev-wrappers ]
-          ] ++ (with python3Packages; [
+          ++ (with python3Packages; [
-            numpy matplotlib pyqtgraph setuptools pyqt6 qasync pglive
+            numpy
+            matplotlib
+            pyqtgraph
+            setuptools
+            pyqt6
+            qasync
+            pglive
+            qtextras
           ]);
+        shellHook = ''
+          export PYTHONPATH=`pwd`/pytec:$PYTHONPATH
+        '';
       };
       defaultPackage.x86_64-linux = thermostat;
     };

pytec/.flake8

@@ -0,0 +1,3 @@
+[flake8]
+max-line-length = 88
+extend-ignore = E203,E701

pytec/autotune.py

@@ -12,16 +12,16 @@ from pytec.client import Client
 
 
 class PIDAutotuneState(Enum):
-    STATE_OFF = 'off'
+    STATE_OFF = "off"
-    STATE_RELAY_STEP_UP = 'relay step up'
+    STATE_RELAY_STEP_UP = "relay step up"
-    STATE_RELAY_STEP_DOWN = 'relay step down'
+    STATE_RELAY_STEP_DOWN = "relay step down"
-    STATE_SUCCEEDED = 'succeeded'
+    STATE_SUCCEEDED = "succeeded"
-    STATE_FAILED = 'failed'
+    STATE_FAILED = "failed"
-    STATE_READY = 'ready'
+    STATE_READY = "ready"
 
 
 class PIDAutotune:
-    PIDParams = namedtuple('PIDParams', ['Kp', 'Ki', 'Kd'])
+    PIDParams = namedtuple("PIDParams", ["Kp", "Ki", "Kd"])
 
     PEAK_AMPLITUDE_TOLERANCE = 0.05
 
@@ -31,13 +31,14 @@ class PIDAutotune:
         "ciancone-marlin": [0.303, 0.1364, 0.0481],
         "pessen-integral": [0.7, 1.75, 0.105],
         "some-overshoot": [0.333, 0.667, 0.111],
-        "no-overshoot": [0.2, 0.4,  0.0667]
+        "no-overshoot": [0.2, 0.4, 0.0667],
     }
 
-    def __init__(self, setpoint, out_step=10, lookback=60,
+    def __init__(
-                 noiseband=0.5, sampletime=1.2):
+        self, setpoint, out_step=10, lookback=60, noiseband=0.5, sampletime=1.2
+    ):
         if setpoint is None:
-            raise ValueError('setpoint must be specified')
+            raise ValueError("setpoint must be specified")
 
         self._inputs = deque(maxlen=round(lookback / sampletime))
         self._setpoint = setpoint
@@ -84,7 +85,7 @@ class PIDAutotune:
         """Get a list of all available tuning rules."""
         return self._tuning_rules.keys()
 
-    def get_pid_parameters(self, tuning_rule='ziegler-nichols'):
+    def get_pid_parameters(self, tuning_rule="ziegler-nichols"):
         """Get PID parameters.
 
         Args:
@@ -116,28 +117,34 @@ class PIDAutotune:
         """
         now = time_input * 1000
 
-        if (self._state == PIDAutotuneState.STATE_OFF
+        if (
+            self._state == PIDAutotuneState.STATE_OFF
             or self._state == PIDAutotuneState.STATE_SUCCEEDED
             or self._state == PIDAutotuneState.STATE_FAILED
-                or self._state == PIDAutotuneState.STATE_READY):
+            or self._state == PIDAutotuneState.STATE_READY
+        ):
             self._state = PIDAutotuneState.STATE_RELAY_STEP_UP
 
         self._last_run_timestamp = now
 
         # check input and change relay state if necessary
-        if (self._state == PIDAutotuneState.STATE_RELAY_STEP_UP
+        if (
-                and input_val > self._setpoint + self._noiseband):
+            self._state == PIDAutotuneState.STATE_RELAY_STEP_UP
+            and input_val > self._setpoint + self._noiseband
+        ):
             self._state = PIDAutotuneState.STATE_RELAY_STEP_DOWN
-            logging.debug('switched state: {0}'.format(self._state))
+            logging.debug("switched state: {0}".format(self._state))
-            logging.debug('input: {0}'.format(input_val))
+            logging.debug("input: {0}".format(input_val))
-        elif (self._state == PIDAutotuneState.STATE_RELAY_STEP_DOWN
+        elif (
-                and input_val < self._setpoint - self._noiseband):
+            self._state == PIDAutotuneState.STATE_RELAY_STEP_DOWN
+            and input_val < self._setpoint - self._noiseband
+        ):
             self._state = PIDAutotuneState.STATE_RELAY_STEP_UP
-            logging.debug('switched state: {0}'.format(self._state))
+            logging.debug("switched state: {0}".format(self._state))
-            logging.debug('input: {0}'.format(input_val))
+            logging.debug("input: {0}".format(input_val))
 
         # set output
-        if (self._state == PIDAutotuneState.STATE_RELAY_STEP_UP):
+        if self._state == PIDAutotuneState.STATE_RELAY_STEP_UP:
             self._output = self._initial_output - self._outputstep
         elif self._state == PIDAutotuneState.STATE_RELAY_STEP_DOWN:
             self._output = self._initial_output + self._outputstep
@@ -180,8 +187,8 @@ class PIDAutotune:
             self._peak_count += 1
             self._peaks.append(input_val)
             self._peak_timestamps.append(now)
-            logging.debug('found peak: {0}'.format(input_val))
+            logging.debug("found peak: {0}".format(input_val))
-            logging.debug('peak count: {0}'.format(self._peak_count))
+            logging.debug("peak count: {0}".format(self._peak_count))
 
         # check for convergence of induced oscillation
         # convergence of amplitude assessed on last 4 peaks (1.5 cycles)
@@ -191,20 +198,19 @@ class PIDAutotune:
             abs_max = self._peaks[-2]
             abs_min = self._peaks[-2]
             for i in range(0, len(self._peaks) - 2):
-                self._induced_amplitude += abs(self._peaks[i]
+                self._induced_amplitude += abs(self._peaks[i] - self._peaks[i + 1])
-                                               - self._peaks[i+1])
                 abs_max = max(self._peaks[i], abs_max)
                 abs_min = min(self._peaks[i], abs_min)
 
             self._induced_amplitude /= 6.0
 
             # check convergence criterion for amplitude of induced oscillation
-            amplitude_dev = ((0.5 * (abs_max - abs_min)
+            amplitude_dev = (
-                              - self._induced_amplitude)
+                0.5 * (abs_max - abs_min) - self._induced_amplitude
-                             / self._induced_amplitude)
+            ) / self._induced_amplitude
 
-            logging.debug('amplitude: {0}'.format(self._induced_amplitude))
+            logging.debug("amplitude: {0}".format(self._induced_amplitude))
-            logging.debug('amplitude deviation: {0}'.format(amplitude_dev))
+            logging.debug("amplitude deviation: {0}".format(amplitude_dev))
 
             if amplitude_dev < PIDAutotune.PEAK_AMPLITUDE_TOLERANCE:
                 self._state = PIDAutotuneState.STATE_SUCCEEDED
@@ -218,25 +224,24 @@ class PIDAutotune:
 
         if self._state == PIDAutotuneState.STATE_SUCCEEDED:
             self._output = 0
-            logging.debug('peak finding successful')
+            logging.debug("peak finding successful")
 
             # calculate ultimate gain
-            self._Ku = 4.0 * self._outputstep / \
+            self._Ku = 4.0 * self._outputstep / (self._induced_amplitude * math.pi)
-                (self._induced_amplitude * math.pi)
+            logging.debug("Ku: {0}".format(self._Ku))
-            logging.debug('Ku: {0}'.format(self._Ku))
 
             # calculate ultimate period in seconds
             period1 = self._peak_timestamps[3] - self._peak_timestamps[1]
             period2 = self._peak_timestamps[4] - self._peak_timestamps[2]
             self._Pu = 0.5 * (period1 + period2) / 1000.0
-            logging.debug('Pu: {0}'.format(self._Pu))
+            logging.debug("Pu: {0}".format(self._Pu))
 
             for rule in self._tuning_rules:
                 params = self.get_pid_parameters(rule)
-                logging.debug('rule: {0}'.format(rule))
+                logging.debug("rule: {0}".format(rule))
-                logging.debug('Kp: {0}'.format(params.Kp))
+                logging.debug("Kp: {0}".format(params.Kp))
-                logging.debug('Ki: {0}'.format(params.Ki))
+                logging.debug("Ki: {0}".format(params.Ki))
-                logging.debug('Kd: {0}'.format(params.Kd))
+                logging.debug("Kd: {0}".format(params.Kd))
 
             return True
         return False
@@ -263,16 +268,17 @@ def main():
     data = next(tec.report_mode())
     ch = data[channel]
 
-    tuner = PIDAutotune(target_temperature, output_step,
+    tuner = PIDAutotune(
-                        lookback, noiseband, ch['interval'])
+        target_temperature, output_step, lookback, noiseband, ch["interval"]
+    )
 
     for data in tec.report_mode():
 
         ch = data[channel]
 
-        temperature = ch['temperature']
+        temperature = ch["temperature"]
 
-        if (tuner.run(temperature, ch['time'])):
+        if tuner.run(temperature, ch["time"]):
             break
 
         tuner_out = tuner.output()

pytec/examples/aioexample.py

@@ -1,16 +1,36 @@
 import asyncio
-from pytec.aioclient import Client
+from contextlib import suppress
+from pytec.aioclient import AsyncioClient
+
+
+async def poll_for_info(tec):
+    while True:
+        print(tec.get_pwm())
+        print(tec.get_steinhart_hart())
+        print(tec.get_pid())
+        print(tec.get_postfilter())
+        print(tec.get_fan())
+
+        await asyncio.sleep(1)
+
 
 async def main():
-    tec = Client()
+    tec = AsyncioClient()
-    await tec.start_session() #(host="192.168.1.26", port=23)
+    await tec.connect()  # (host="192.168.1.26", port=23)
     await tec.set_param("s-h", 1, "t0", 20)
     print(await tec.get_pwm())
     print(await tec.get_pid())
     print(await tec.get_pwm())
     print(await tec.get_postfilter())
     print(await tec.get_steinhart_hart())
+
+    polling_task = asyncio.create_task(poll_for_info(tec))
+
     async for data in tec.report_mode():
         print(data)
 
+    polling_task.cancel()
+    with suppress(asyncio.CancelledError):
+        await polling_task
+
 asyncio.run(main())

pytec/plot.py

@@ -7,9 +7,10 @@ from pytec.client import Client
 TIME_WINDOW = 300.0
 
 tec = Client()
-target_temperature = tec.get_pid()[0]['target']
+target_temperature = tec.get_pid()[0]["target"]
 print("Channel 0 target temperature: {:.3f}".format(target_temperature))
 
+
 class Series:
     def __init__(self, conv=lambda x: x):
         self.conv = conv
@@ -27,24 +28,26 @@ class Series:
         self.x_data = self.x_data[drop:]
         self.y_data = self.y_data[drop:]
 
+
 series = {
     # 'adc': Series(),
     # 'sens': Series(lambda x: x * 0.0001),
-    'temperature': Series(),
+    "temperature": Series(),
     # 'i_set': Series(),
-    'pid_output': Series(),
+    "pid_output": Series(),
     # 'vref': Series(),
     # 'dac_value': Series(),
     # 'dac_feedback': Series(),
     # 'i_tec': Series(),
-    'tec_i': Series(),
+    "tec_i": Series(),
-    'tec_u_meas': Series(),
+    "tec_u_meas": Series(),
     # 'interval': Series(),
 }
 series_lock = Lock()
 
 quit = False
 
+
 def recv_data(tec):
     global last_packet_time
     for data in tec.report_mode():
@@ -55,22 +58,24 @@ def recv_data(tec):
                 if k in ch0:
                     v = ch0[k]
                     if type(v) is float:
-                        s.append(ch0['time'], v)
+                        s.append(ch0["time"], v)
         finally:
             series_lock.release()
 
         if quit:
             break
 
+
 thread = Thread(target=recv_data, args=(tec,))
 thread.start()
 
 fig, ax = plt.subplots()
 
 for k, s in series.items():
-    s.plot, = ax.plot([], [], label=k)
+    (s.plot,) = ax.plot([], [], label=k)
 legend = ax.legend()
 
+
 def animate(i):
     min_x, max_x, min_y, max_y = None, None, None, None
 
@@ -120,8 +125,8 @@ def animate(i):
     legend.remove()
     legend = ax.legend()
 
-ani = animation.FuncAnimation(
+
-    fig, animate, interval=1, blit=False, save_count=50)
+ani = animation.FuncAnimation(fig, animate, interval=1, blit=False, save_count=50)
 
 plt.show()
 quit = True

pytec/pyproject.toml

@@ -16,3 +16,6 @@ tec_qt = "tec_qt:main"
 [tool.setuptools]
 packages.find = {}
 py-modules = ["autotune", "plot", "tec_qt"]
+
+[tool.pylint.format]
+max-line-length = "88"

pytec/pytec/aioclient.py

@@ -2,58 +2,34 @@ import asyncio
 import json
 import logging
 
+
 class CommandError(Exception):
     pass
 
-class StoppedConnecting(Exception):
-    pass
 
-class Client:
+class AsyncioClient:
     def __init__(self):
         self._reader = None
         self._writer = None
-        self._connecting_task = None
         self._command_lock = asyncio.Lock()
         self._report_mode_on = False
-        self.timeout = None
 
-    async def start_session(self, host='192.168.1.26', port=23, timeout=None):
+    async def connect(self, host="192.168.1.26", port=23):
-        """Start session to Thermostat at specified host and port.
+        """Connect to Thermostat at specified host and port.
-        Throws StoppedConnecting if disconnect was called while connecting.
-        Throws asyncio.TimeoutError if timeout was exceeded.
 
         Example::
-            client = Client()
+            client = AsyncioClient()
-            try:
+            await client.connect()
-                await client.start_session()
-            except StoppedConnecting:
-                print("Stopped connecting")
         """
-        self._connecting_task = asyncio.create_task(
+        self._reader, self._writer = await asyncio.open_connection(host, port)
-            asyncio.wait_for(asyncio.open_connection(host, port), timeout)
-        )
-        self.timeout = timeout
-        try:
-            self._reader, self._writer = await self._connecting_task
-        except asyncio.CancelledError:
-            raise StoppedConnecting
-        finally:
-            self._connecting_task = None
-
         await self._check_zero_limits()
 
-    def connecting(self):
-        """Returns True if client is connecting"""
-        return self._connecting_task is not None
-
     def connected(self):
         """Returns True if client is connected"""
         return self._writer is not None
 
-    async def end_session(self):
+    async def disconnect(self):
-        """End session to Thermostat if connected, cancel connection if connecting"""
+        """Disconnect from the Thermostat"""
-        if self._connecting_task is not None:
-            self._connecting_task.cancel()
 
         if self._writer is None:
             return
@@ -69,26 +45,29 @@ class Client:
         for pwm_channel in pwm_report:
             for limit in ["max_i_neg", "max_i_pos", "max_v"]:
                 if pwm_channel[limit]["value"] == 0.0:
-                    logging.warning("`{}` limit is set to zero on channel {}".format(limit, pwm_channel["channel"]))
+                    logging.warning(
+                        "`{}` limit is set to zero on channel {}".format(
+                            limit, pwm_channel["channel"]
+                        )
+                    )
 
     async def _read_line(self):
         # read 1 line
-        chunk = await asyncio.wait_for(self._reader.readline(), self.timeout) # Only wait for response until timeout
+        chunk = await self._reader.readline()
-        return chunk.decode('utf-8', errors='ignore')
+        return chunk.decode("utf-8", errors="ignore")
 
     async def _read_write(self, command):
-        self._writer.write(((" ".join(command)).strip() + "\n").encode('utf-8'))
+        self._writer.write(((" ".join(command)).strip() + "\n").encode("utf-8"))
         await self._writer.drain()
 
         return await self._read_line()
 
     async def _command(self, *command):
         async with self._command_lock:
-            # protect the read-write process from being cancelled midway
+            line = await self._read_write(command)
-            line = await asyncio.shield(self._read_write(command))
 
         response = json.loads(line)
-        logging.debug(f"{command}: {response}")
+        logging.debug("%s: %s", command, response)
         if "error" in response:
             raise CommandError(response["error"])
         return response
@@ -239,6 +218,8 @@ class Client:
     async def save_config(self, channel=""):
         """Save current configuration to EEPROM"""
         await self._command("save", str(channel))
+        if channel == "":
+            await self._read_line()  # Read the extra {}
 
     async def load_config(self, channel=""):
         """Load current configuration from EEPROM"""
@@ -256,24 +237,24 @@ class Client:
         The client is disconnected as the TCP session is terminated.
         """
         async with self._command_lock:
-            self._writer.write("reset\n".encode('utf-8'))
+            self._writer.write("reset\n".encode("utf-8"))
             await self._writer.drain()
 
-        await self.end_session()
+        await self.disconnect()
 
     async def dfu(self):
-        """Put the Thermostat in DFU update mode
+        """Put the Thermostat in DFU mode
 
         The client is disconnected as the Thermostat stops responding to
-        TCP commands in DFU update mode. The only way to exit it is by
+        TCP commands in DFU mode. To exit it, submit a DFU leave request
-        power-cycling.
+        or power-cycle the Thermostat.
         """
         async with self._command_lock:
-            self._writer.write("dfu\n".encode('utf-8'))
+            self._writer.write("dfu\n".encode("utf-8"))
             await self._writer.drain()
 
-        await self.end_session()
+        await self.disconnect()
 
     async def ipv4(self):
         """Get the IPv4 settings of the Thermostat"""
-        return await self._command('ipv4')
+        return await self._command("ipv4")

pytec/pytec/client.py

@@ -2,9 +2,11 @@ import socket
 import json
 import logging
 
+
 class CommandError(Exception):
     pass
 
+
 class Client:
     def __init__(self, host="192.168.1.26", port=23, timeout=None):
         self._socket = socket.create_connection((host, port), timeout)
@@ -20,7 +22,11 @@ class Client:
         for pwm_channel in pwm_report:
             for limit in ["max_i_neg", "max_i_pos", "max_v"]:
                 if pwm_channel[limit]["value"] == 0.0:
-                    logging.warning("`{}` limit is set to zero on channel {}".format(limit, pwm_channel["channel"]))
+                    logging.warning(
+                        "`{}` limit is set to zero on channel {}".format(
+                            limit, pwm_channel["channel"]
+                        )
+                    )
 
     def _read_line(self):
         # read more lines
@@ -28,7 +34,7 @@ class Client:
             chunk = self._socket.recv(4096)
             if not chunk:
                 return None
-            buf = self._lines[-1] + chunk.decode('utf-8', errors='ignore')
+            buf = self._lines[-1] + chunk.decode("utf-8", errors="ignore")
             self._lines = buf.split("\n")
 
         line = self._lines[0]
@@ -36,7 +42,7 @@ class Client:
         return line
 
     def _command(self, *command):
-        self._socket.sendall((" ".join(command) + "\n").encode('utf-8'))
+        self._socket.sendall((" ".join(command) + "\n").encode("utf-8"))
 
         line = self._read_line()
         response = json.loads(line)

pytec/pytec/gui/model/pid_autotuner.py

@@ -1,13 +1,17 @@
-from PyQt6.QtCore import QObject, pyqtSlot
+from PyQt6.QtCore import QObject, pyqtSlot, pyqtSignal
 from qasync import asyncSlot
 from autotune import PIDAutotuneState, PIDAutotune
 
 
 class PIDAutoTuner(QObject):
-    def __init__(self, parent, client, num_of_channel):
+    autotune_state_changed = pyqtSignal(int, PIDAutotuneState)
-        super().__init__()
+
+    def __init__(self, parent, thermostat, num_of_channel):
+        super().__init__(parent)
+
+        self._thermostat = thermostat
+        self._thermostat.report_update.connect(self.tick)
 
-        self._client = client
         self.autotuners = [PIDAutotune(25) for _ in range(num_of_channel)]
         self.target_temp = [20.0 for _ in range(num_of_channel)]
         self.test_current = [1.0 for _ in range(num_of_channel)]
@@ -15,10 +19,6 @@ class PIDAutoTuner(QObject):
         self.lookback = [3.0 for _ in range(num_of_channel)]
         self.sampling_interval = [1 / 16.67 for _ in range(num_of_channel)]
 
-    @pyqtSlot(list)
-    def update_sampling_interval(self, interval):
-        self.sampling_interval = interval
-
     def set_params(self, params_name, ch, val):
         getattr(self, params_name)[ch] = val
 
@@ -34,39 +34,51 @@ class PIDAutoTuner(QObject):
             self.lookback[ch],
         )
         self.autotuners[ch].setReady()
+        self.autotune_state_changed.emit(ch, self.autotuners[ch].state())
 
     async def stop_pid_from_running(self, ch):
         self.autotuners[ch].setOff()
-        await self._client.set_param("pwm", ch, "i_set", 0)
+        self.autotune_state_changed.emit(ch, self.autotuners[ch].state())
+        if self._thermostat.connected():
+            await self._thermostat.set_param("pwm", ch, "i_set", 0)
 
     @asyncSlot(list)
     async def tick(self, report):
         for channel_report in report:
+            ch = channel_report["channel"]
+
+            self.sampling_interval[ch] = channel_report["interval"]
+
             # TODO: Skip when PID Autotune or emit error message if NTC is not connected
             if channel_report["temperature"] is None:
                 continue
 
-            ch = channel_report["channel"]
             match self.autotuners[ch].state():
-                case PIDAutotuneState.STATE_READY | PIDAutotuneState.STATE_RELAY_STEP_UP | PIDAutotuneState.STATE_RELAY_STEP_DOWN:
+                case (
+                    PIDAutotuneState.STATE_READY
+                    | PIDAutotuneState.STATE_RELAY_STEP_UP
+                    | PIDAutotuneState.STATE_RELAY_STEP_DOWN
+                ):
                     self.autotuners[ch].run(
                         channel_report["temperature"], channel_report["time"]
                     )
-                    await self._client.set_param(
+                    await self._thermostat.set_param(
                         "pwm", ch, "i_set", self.autotuners[ch].output()
                     )
                 case PIDAutotuneState.STATE_SUCCEEDED:
                     kp, ki, kd = self.autotuners[ch].get_tec_pid()
                     self.autotuners[ch].setOff()
+                    self.autotune_state_changed.emit(ch, self.autotuners[ch].state())
 
-                    await self._client.set_param("pid", ch, "kp", kp)
+                    await self._thermostat.set_param("pid", ch, "kp", kp)
-                    await self._client.set_param("pid", ch, "ki", ki)
+                    await self._thermostat.set_param("pid", ch, "ki", ki)
-                    await self._client.set_param("pid", ch, "kd", kd)
+                    await self._thermostat.set_param("pid", ch, "kd", kd)
-                    await self._client.set_param("pwm", ch, "pid")
+                    await self._thermostat.set_param("pwm", ch, "pid")
 
-                    await self._client.set_param(
+                    await self._thermostat.set_param(
                         "pid", ch, "target", self.target_temp[ch]
                     )
                 case PIDAutotuneState.STATE_FAILED:
                     self.autotuners[ch].setOff()
-                    await self._client.set_param("pwm", ch, "i_set", 0)
+                    self.autotune_state_changed.emit(ch, self.autotuners[ch].state())
+                    await self._thermostat.set_param("pwm", ch, "i_set", 0)

pytec/pytec/gui/model/thermostat.py

@@ -1,111 +1,104 @@
-from pytec.aioclient import Client
 from PyQt6.QtCore import pyqtSignal, QObject, pyqtSlot
 from qasync import asyncSlot
 from pytec.gui.model.property import Property, PropertyMeta
 import asyncio
 import logging
+from enum import Enum
+from pytec.aioclient import AsyncioClient
 
 
-class WrappedClient(QObject, Client):
+class ThermostatConnectionState(Enum):
-    connection_error = pyqtSignal()
+    DISCONNECTED = "disconnected"
-
+    CONNECTING = "connecting"
-    async def _read_line(self):
+    CONNECTED = "connected"
-        try:
-            return await super()._read_line()
-        except (Exception, TimeoutError, asyncio.exceptions.TimeoutError):
-            logging.error("Client connection error, disconnecting", exc_info=True)
-            self.connection_error.emit()
 
 
 class Thermostat(QObject, metaclass=PropertyMeta):
+    connection_state = Property(ThermostatConnectionState)
     hw_rev = Property(dict)
     fan = Property(dict)
     thermistor = Property(list)
     pid = Property(list)
     pwm = Property(list)
     postfilter = Property(list)
-    interval = Property(list)
     report = Property(list)
-    info_box_trigger = pyqtSignal(str, str)
 
-    def __init__(self, parent, client, update_s):
+    connection_error = pyqtSignal()
-        self._update_s = update_s
+
-        self._client = client
+    NUM_CHANNELS = 2
-        self._watch_task = None
+
-        self._report_mode_task = None
+    def __init__(self, parent, update_s, disconnect_cb=None):
-        self._poll_for_report = True
         super().__init__(parent)
 
-    async def run(self):
+        self._update_s = update_s
-        self.task = asyncio.create_task(self.update_params())
+        self._client = AsyncioClient()
-        while True:
+        self._watch_task = None
-            if self.task.done():
+        self._update_params_task = None
-                if self.task.exception() is not None:
+        self.disconnect_cb = disconnect_cb
-                    try:
+        self.connection_state = ThermostatConnectionState.DISCONNECTED
-                        raise self.task.exception()
-                    except (
-                        Exception,
-                        TimeoutError,
-                        asyncio.exceptions.TimeoutError,
-                    ):
-                        logging.error(
-                            "Encountered an error while updating parameter tree.",
-                            exc_info=True,
-                        )
-                _ = self.task.result()
-                self.task = asyncio.create_task(self.update_params())
-            await asyncio.sleep(self._update_s)
 
-    async def get_hw_rev(self):
+    async def start_session(self, host, port):
+        await self._client.connect(host, port)
         self.hw_rev = await self._client.hw_rev()
-        return self.hw_rev
 
-    async def update_params(self):
+    @asyncSlot()
-        self.fan = await self._client.get_fan()
+    async def end_session(self):
-        self.pwm = await self._client.get_pwm()
+        self.stop_watching()
-        if self._poll_for_report:
-            self.report = await self._client.report()
-            self.interval = [
-                self.report[i]["interval"] for i in range(len(self.report))
-            ]
-        self.pid = await self._client.get_pid()
-        self.thermistor = await self._client.get_steinhart_hart()
-        self.postfilter = await self._client.get_postfilter()
 
-    def connected(self):
+        if self.disconnect_cb is not None:
-        return self._client.connected
+            if asyncio.iscoroutinefunction(self.disconnect_cb):
+                await self.disconnect_cb()
+            else:
+                self.disconnect_cb()
 
-    def connecting(self):
+        await self._client.disconnect()
-        return self._client.connecting
 
     def start_watching(self):
         self._watch_task = asyncio.create_task(self.run())
 
-    @asyncSlot()
+    def stop_watching(self):
-    async def stop_watching(self):
         if self._watch_task is not None:
-            await self.set_report_mode(False)
             self._watch_task.cancel()
             self._watch_task = None
-            self.task.cancel()
+            self._update_params_task.cancel()
-            self.task = None
+            self._update_params_task = None
 
-    async def set_report_mode(self, enabled: bool):
+    async def run(self):
-        self._poll_for_report = not enabled
+        self._update_params_task = asyncio.create_task(self.update_params())
-        if enabled:
+        while True:
-            self._report_mode_task = asyncio.create_task(self.report_mode())
+            if self._update_params_task.done():
-        else:
+                try:
-            self._client.stop_report_mode()
+                    self._update_params_task.result()
+                except OSError:
+                    logging.error(
+                        "Encountered an error while polling for information from Thermostat.",
+                        exc_info=True,
+                    )
+                    await self.end_session()
+                    self.connection_state = ThermostatConnectionState.DISCONNECTED
+                    self.connection_error.emit()
+                    return
+                self._update_params_task = asyncio.create_task(self.update_params())
+            await asyncio.sleep(self._update_s)
 
-    async def report_mode(self):
+    async def update_params(self):
-        async for report in self._client.report_mode():
+        self.fan, self.pwm, self.report, self.pid, self.thermistor, self.postfilter = (
-            self.report_update.emit(report)
+            await asyncio.gather(
-            self.interval = [
+                self._client.get_fan(),
-                self.report[i]["interval"] for i in range(len(self.report))
+                self._client.get_pwm(),
-            ]
+                self._client.report(),
+                self._client.get_pid(),
+                self._client.get_steinhart_hart(),
+                self._client.get_postfilter(),
+            )
+        )
 
-    async def end_session(self):
+    def connected(self):
-        await self._client.end_session()
+        return self._client.connected()
+
+    @pyqtSlot(float)
+    def set_update_s(self, update_s):
+        self._update_s = update_s
 
     async def set_ipv4(self, ipv4):
         await self._client.set_param("ipv4", ipv4)
@@ -114,18 +107,12 @@ class Thermostat(QObject, metaclass=PropertyMeta):
         return await self._client.ipv4()
 
     @asyncSlot()
-    async def save_cfg(self, ch):
+    async def save_cfg(self, ch=""):
         await self._client.save_config(ch)
-        self.info_box_trigger.emit(
-            "Config saved", f"Channel {ch} Config has been saved from flash."
-        )
 
     @asyncSlot()
-    async def load_cfg(self, ch):
+    async def load_cfg(self, ch=""):
         await self._client.load_config(ch)
-        self.info_box_trigger.emit(
-            "Config loaded", f"Channel {ch} Config has been loaded from flash."
-        )
 
     async def dfu(self):
         await self._client.dfu()
@@ -133,6 +120,11 @@ class Thermostat(QObject, metaclass=PropertyMeta):
     async def reset(self):
         await self._client.reset()
 
-    @pyqtSlot(float)
+    async def set_fan(self, power="auto"):
-    def set_update_s(self, update_s):
+        await self._client.set_fan(power)
-        self._update_s = update_s
+
+    async def get_fan(self):
+        return await self._client.get_fan()
+
+    async def set_param(self, topic, channel, field="", value=""):
+        await self._client.set_param(topic, channel, field, value)

pytec/pytec/gui/view/connection_details_menu.py

@@ -1,9 +1,17 @@
 from PyQt6 import QtWidgets, QtCore
+from PyQt6.QtCore import pyqtSlot
+from pytec.gui.model.thermostat import ThermostatConnectionState
 
 
-class ConnMenu(QtWidgets.QMenu):
+class ConnectionDetailsMenu(QtWidgets.QMenu):
-    def __init__(self):
+    def __init__(self, thermostat, connect_btn):
         super().__init__()
+        self._thermostat = thermostat
+        self._connect_btn = connect_btn
+        self._thermostat.connection_state_update.connect(
+            self.thermostat_state_change_handler
+        )
+
         self.setTitle("Connection Settings")
 
         self.host_set_line = QtWidgets.QLineEdit()
@@ -13,7 +21,7 @@ class ConnMenu(QtWidgets.QMenu):
         self.host_set_line.setClearButtonEnabled(True)
 
         def connect_on_enter_press():
-            self.connect_btn.click()
+            self._connect_btn.click()
             self.hide()
 
         self.host_set_line.returnPressed.connect(connect_on_enter_press)
@@ -54,3 +62,12 @@ class ConnMenu(QtWidgets.QMenu):
         exit_action.setDefaultWidget(self.exit_button)
         self.addAction(exit_action)
         self.exit_action = exit_action
+
+    @pyqtSlot(ThermostatConnectionState)
+    def thermostat_state_change_handler(self, state):
+        self.host_set_line.setEnabled(
+            state == ThermostatConnectionState.DISCONNECTED
+        )
+        self.port_set_spin.setEnabled(
+            state == ThermostatConnectionState.DISCONNECTED
+        )

pytec/pytec/gui/view/ctrl_panel.py

@@ -1,9 +1,12 @@
+from functools import partial
 from PyQt6.QtCore import pyqtSignal, QObject, QSignalBlocker, pyqtSlot
 import pyqtgraph.parametertree.parameterTypes as pTypes
 from pyqtgraph.parametertree import (
     Parameter,
     registerParameterType,
 )
+from qasync import asyncSlot
+from autotune import PIDAutotuneState
 
 
 class MutexParameter(pTypes.ListParameter):
@@ -43,18 +46,20 @@ registerParameterType("mutex", MutexParameter)
 
 
 class CtrlPanel(QObject):
-    set_zero_limits_warning_sig = pyqtSignal(list)
-
     def __init__(
         self,
+        thermostat,
+        autotuners,
+        info_box,
         trees_ui,
         param_tree,
-        sigTreeStateChanged_handle,
-        sigActivated_handles,
         parent=None,
     ):
         super().__init__(parent)
 
+        self.thermostat = thermostat
+        self.autotuners = autotuners
+        self.info_box = info_box
         self.trees_ui = trees_ui
         self.NUM_CHANNELS = len(trees_ui)
 
@@ -77,10 +82,24 @@ class CtrlPanel(QObject):
             tree.setHeaderHidden(True)
             tree.setParameters(self.params[i], showTop=False)
             self.params[i].setValue = self._setValue
-            self.params[i].sigTreeStateChanged.connect(sigTreeStateChanged_handle)
+            self.params[i].sigTreeStateChanged.connect(self.send_command)
 
-            for handle in sigActivated_handles[i]:
+            self.params[i].child("Save to flash").sigActivated.connect(
-                self.params[i].child(*handle[0]).sigActivated.connect(handle[1])
+                partial(self.save_settings, i)
+            )
+            self.params[i].child("Load from flash").sigActivated.connect(
+                partial(self.load_settings, i)
+            )
+            self.params[i].child(
+                "PID Config", "PID Auto Tune", "Run"
+            ).sigActivated.connect(partial(self.pid_auto_tune_request, i))
+
+        self.thermostat.pid_update.connect(self.update_pid)
+        self.thermostat.report_update.connect(self.update_report)
+        self.thermostat.thermistor_update.connect(self.update_thermistor)
+        self.thermostat.pwm_update.connect(self.update_pwm)
+        self.thermostat.postfilter_update.connect(self.update_postfilter)
+        self.autotuners.autotune_state_changed.connect(self.update_pid_autotune)
 
     def _setValue(self, value, blockSignal=None):
         """
@@ -111,7 +130,42 @@ class CtrlPanel(QObject):
     def change_params_title(self, channel, path, title):
         self.params[channel].child(*path).setOpts(title=title)
 
-    @pyqtSlot("QVariantList")
+    @asyncSlot(object, object)
+    async def send_command(self, param, changes):
+        """Translates parameter tree changes into thermostat set_param calls"""
+        ch = param.channel
+
+        for inner_param, change, data in changes:
+            if change == "value":
+                new_value = data
+                if "thermostat:set_param" in inner_param.opts:
+                    if inner_param.opts.get("suffix", None) == "mA":
+                        new_value /= 1000  # Given in mA
+
+                    thermostat_param = inner_param.opts["thermostat:set_param"]
+
+                    # Handle thermostat command irregularities
+                    match inner_param.name(), new_value:
+                        case "Postfilter Rate", None:
+                            thermostat_param = thermostat_param.copy()
+                            thermostat_param["field"] = "off"
+                            new_value = ""
+                        case "Control Method", "Constant Current":
+                            return
+                        case "Control Method", "Temperature PID":
+                            new_value = ""
+
+                    inner_param.setOpts(lock=True)
+                    await self.thermostat.set_param(
+                        channel=ch, value=new_value, **thermostat_param
+                    )
+                    inner_param.setOpts(lock=False)
+
+                if "pid_autotune" in inner_param.opts:
+                    auto_tuner_param = inner_param.opts["pid_autotune"]
+                    self.autotuners.set_params(auto_tuner_param, ch, new_value)
+
+    @pyqtSlot(list)
     def update_pid(self, pid_settings):
         for settings in pid_settings:
             channel = settings["channel"]
@@ -135,7 +189,7 @@ class CtrlPanel(QObject):
                     "Output Config", "Control Method", "Set Temperature"
                 ).setValue(settings["target"])
 
-    @pyqtSlot("QVariantList")
+    @pyqtSlot(list)
     def update_report(self, report_data):
         for settings in report_data:
             channel = settings["channel"]
@@ -155,7 +209,7 @@ class CtrlPanel(QObject):
                             settings["tec_i"] * 1000
                         )
 
-    @pyqtSlot("QVariantList")
+    @pyqtSlot(list)
     def update_thermistor(self, sh_data):
         for sh_param in sh_data:
             channel = sh_param["channel"]
@@ -170,10 +224,8 @@ class CtrlPanel(QObject):
                     sh_param["params"]["b"]
                 )
 
-    @pyqtSlot("QVariantList")
+    @pyqtSlot(list)
     def update_pwm(self, pwm_data):
-        channels_zeroed_limits = [set() for i in range(self.NUM_CHANNELS)]
-
         for pwm_params in pwm_data:
             channel = pwm_params["channel"]
             with QSignalBlocker(self.params[channel]):
@@ -187,12 +239,7 @@ class CtrlPanel(QObject):
                     "Output Config", "Limits", "Max Heating Current"
                 ).setValue(pwm_params["max_i_neg"]["value"] * 1000)
 
-            for limit in "max_i_pos", "max_i_neg", "max_v":
+    @pyqtSlot(list)
-                if pwm_params[limit]["value"] == 0.0:
-                    channels_zeroed_limits[channel].add(limit)
-        self.set_zero_limits_warning_sig.emit(channels_zeroed_limits)
-
-    @pyqtSlot("QVariantList")
     def update_postfilter(self, postfilter_data):
         for postfilter_params in postfilter_data:
             channel = postfilter_params["channel"]
@@ -200,3 +247,61 @@ class CtrlPanel(QObject):
                 self.params[channel].child(
                     "Thermistor Config", "Postfilter Rate"
                 ).setValue(postfilter_params["rate"])
+
+    def update_pid_autotune(self, ch, state):
+        match state:
+            case PIDAutotuneState.STATE_OFF:
+                self.change_params_title(
+                    ch, ("PID Config", "PID Auto Tune", "Run"), "Run"
+                )
+            case (
+                PIDAutotuneState.STATE_READY
+                | PIDAutotuneState.STATE_RELAY_STEP_UP
+                | PIDAutotuneState.STATE_RELAY_STEP_DOWN
+            ):
+                self.change_params_title(
+                    ch, ("PID Config", "PID Auto Tune", "Run"), "Stop"
+                )
+            case PIDAutotuneState.STATE_SUCCEEDED:
+                self.info_box.display_info_box(
+                    "PID Autotune Success",
+                    f"Channel {ch} PID Config has been loaded to Thermostat. Regulating temperature.",
+                )
+            case PIDAutotuneState.STATE_FAILED:
+                self.info_box.display_info_box(
+                    "PID Autotune Failed",
+                    f"Channel {ch} PID Autotune has failed.",
+                )
+
+    @asyncSlot(int)
+    async def load_settings(self, ch):
+        await self.thermostat.load_cfg(ch)
+
+        self.info_box.display_info_box(
+            f"Channel {ch} settings loaded",
+            f"Channel {ch} settings has been loaded from flash.",
+        )
+
+    @asyncSlot(int)
+    async def save_settings(self, ch):
+        await self.thermostat.save_cfg(ch)
+
+        self.info_box.display_info_box(
+            f"Channel {ch} settings saved",
+            f"Channel {ch} settings has been saved to flash.\n"
+            "It will be loaded on Thermostat reset, or when settings are explicitly loaded.",
+        )
+
+    @asyncSlot()
+    async def pid_auto_tune_request(self, ch=0):
+        match self.autotuners.get_state(ch):
+            case PIDAutotuneState.STATE_OFF | PIDAutotuneState.STATE_FAILED:
+                self.autotuners.load_params_and_set_ready(ch)
+
+            case (
+                PIDAutotuneState.STATE_READY
+                | PIDAutotuneState.STATE_RELAY_STEP_UP
+                | PIDAutotuneState.STATE_RELAY_STEP_DOWN
+            ):
+                await self.autotuners.stop_pid_from_running(ch)
+

pytec/pytec/gui/view/live_plot_view.py

@@ -5,13 +5,21 @@ from pglive.sources.live_plot import LiveLinePlot
 from pglive.sources.live_axis import LiveAxis
 from collections import deque
 import pyqtgraph as pg
+from pytec.gui.model.thermostat import ThermostatConnectionState
 
 pg.setConfigOptions(antialias=True)
 
 
 class LiveDataPlotter(QObject):
-    def __init__(self, live_plots):
+    def __init__(self, thermostat, live_plots):
         super().__init__()
+        self._thermostat = thermostat
+
+        self._thermostat.report_update.connect(self.update_report)
+        self._thermostat.pid_update.connect(self.update_pid)
+        self._thermostat.connection_state_update.connect(
+            self.thermostat_state_change_handler
+        )
 
         self.NUM_CHANNELS = len(live_plots)
         self.graphs = []
@@ -21,6 +29,11 @@ class LiveDataPlotter(QObject):
             live_plot[1].setTitle(f"Channel {i} Current")
             self.graphs.append(_TecGraphs(live_plot[0], live_plot[1]))
 
+    @pyqtSlot(ThermostatConnectionState)
+    def thermostat_state_change_handler(self, state):
+        if state == ThermostatConnectionState.DISCONNECTED:
+            self.clear_graphs()
+
     def _config_connector_max_pts(self, connector, samples):
         connector.max_points = samples
         connector.x = deque(maxlen=int(connector.max_points))
@@ -67,9 +80,7 @@ class _TecGraphs:
         self._t_line = self._t_widget.getPlotItem().addLine(label="{value} °C")
         self._t_line.setVisible(False)
         # Hack for keeping setpoint line in plot range
-        self._t_setpoint_plot = (
+        self._t_setpoint_plot = LiveLinePlot()
-            LiveLinePlot()
-        )
 
         for graph in t_widget, i_widget:
             time_axis = LiveAxis(

pytec/pytec/gui/view/param_tree.json

@@ -25,14 +25,10 @@
                    "Constant Current",
                    "Temperature PID"
                 ],
-                "activaters":[
+                "thermostat:set_param":{
-                   null,
+                  "topic":"pwm",
-                   [
+                  "field":"pid"
-                      "pwm",
+                },
-                      "ch",
-                      "pid"
-                   ]
-                ],
                 "children":[
                    {
                       "name":"Set Current",
@@ -46,11 +42,10 @@
                       "triggerOnShow":true,
                       "decimals":6,
                       "suffix":"mA",
-                      "param":[
+                      "thermostat:set_param":{
-                         "pwm",
+                        "topic":"pwm",
-                         "ch",
+                        "field":"i_set"
-                         "i_set"
+                      },
-                      ],
                       "lock":false
                    },
                    {
@@ -63,11 +58,10 @@
                          300
                       ],
                       "format":"{value:.4f} °C",
-                      "param":[
+                      "thermostat:set_param":{
-                         "pid",
+                        "topic":"pid",
-                         "ch",
+                        "field":"target"
-                         "target"
+                      },
-                      ],
                       "lock":false
                    }
                 ]
@@ -88,11 +82,10 @@
                          2000
                       ],
                       "suffix":"mA",
-                      "param":[
+                      "thermostat:set_param":{
-                         "pwm",
+                        "topic":"pwm",
-                         "ch",
+                        "field":"max_i_pos"
-                         "max_i_pos"
+                      },
-                      ],
                       "lock":false
                    },
                    {
@@ -106,11 +99,10 @@
                          2000
                       ],
                       "suffix":"mA",
-                      "param":[
+                      "thermostat:set_param":{
-                         "pwm",
+                         "topic":"pwm",
-                         "ch",
+                         "field":"max_i_neg"
-                         "max_i_neg"
+                      },
-                      ],
                       "lock":false
                    },
                    {
@@ -124,11 +116,10 @@
                       ],
                       "siPrefix":true,
                       "suffix":"V",
-                      "param":[
+                      "thermostat:set_param":{
-                         "pwm",
+                        "topic":"pwm",
-                         "ch",
+                        "field":"max_v"
-                         "max_v"
+                      },
-                      ],
                       "lock":false
                    }
                 ]
@@ -150,11 +141,10 @@
                    100
                 ],
                 "format":"{value:.4f} °C",
-                "param":[
+                "thermostat:set_param":{
-                   "s-h",
+                  "topic":"s-h",
-                   "ch",
+                  "field":"t0"
-                   "t0"
+                },
-                ],
                 "lock":false
              },
              {
@@ -164,11 +154,10 @@
                 "step":1,
                 "siPrefix":true,
                 "suffix":"Ω",
-                "param":[
+                "thermostat:set_param":{
-                   "s-h",
+                  "topic":"s-h",
-                   "ch",
+                  "field":"r0"
-                   "r0"
+                },
-                ],
                 "lock":false
              },
              {
@@ -178,22 +167,20 @@
                 "step":1,
                 "suffix":"K",
                 "decimals":4,
-                "param":[
+                "thermostat:set_param":{
-                   "s-h",
+                  "topic":"s-h",
-                   "ch",
+                  "field":"b"
-                   "b"
+                },
-                ],
                 "lock":false
              },
              {
                 "name":"Postfilter Rate",
                 "type":"list",
                 "value":16.67,
-                "param":[
+                "thermostat:set_param":{
-                   "postfilter",
+                  "topic":"postfilter",
-                   "ch",
+                  "field":"rate"
-                   "rate"
+                },
-                ],
                 "limits":{
                    "Off":null,
                    "16.67 Hz":16.67,
@@ -215,11 +202,10 @@
                 "type":"float",
                 "step":0.1,
                 "suffix":"",
-                "param":[
+                "thermostat:set_param":{
-                   "pid",
+                  "topic":"pid",
-                   "ch",
+                  "field":"kp"
-                   "kp"
+                },
-                ],
                 "lock":false
              },
              {
@@ -227,11 +213,10 @@
                 "type":"float",
                 "step":0.1,
                 "suffix":"Hz",
-                "param":[
+                "thermostat:set_param":{
-                   "pid",
+                  "topic":"pid",
-                   "ch",
+                  "field":"ki"
-                   "ki"
+                },
-                ],
                 "lock":false
              },
              {
@@ -239,11 +224,10 @@
                 "type":"float",
                 "step":0.1,
                 "suffix":"s",
-                "param":[
+                "thermostat:set_param":{
-                   "pid",
+                  "topic":"pid",
-                   "ch",
+                  "field":"kd"
-                   "kd"
+                },
-                ],
                 "lock":false
              },
              {
@@ -261,11 +245,10 @@
                       ],
                       "decimals":6,
                       "suffix":"mA",
-                      "param":[
+                      "thermostat:set_param":{
-                         "pid",
+                        "topic":"pid",
-                         "ch",
+                        "field":"output_min"
-                         "output_min"
+                      },
-                      ],
                       "lock":false
                    },
                    {
@@ -278,11 +261,10 @@
                       ],
                       "decimals":6,
                       "suffix":"mA",
-                      "param":[
+                      "thermostat:set_param":{
-                         "pid",
+                        "topic":"pid",
-                         "ch",
+                        "field":"output_max"
-                         "output_max"
+                      },
-                      ],
                       "lock":false
                    }
                 ]
@@ -298,10 +280,7 @@
                       "value":20,
                       "step":0.1,
                       "format":"{value:.4f} °C",
-                      "pid_autotune":[
+                      "pid_autotune":"target_temp"
-                         "target_temp",
-                         "ch"
-                      ]
                    },
                    {
                       "name":"Test Current",
@@ -314,10 +293,7 @@
                          2000
                       ],
                       "suffix":"mA",
-                      "pid_autotune":[
+                      "pid_autotune":"test_current"
-                         "test_current",
-                         "ch"
-                      ]
                    },
                    {
                       "name":"Temperature Swing",
@@ -326,10 +302,7 @@
                       "step":0.1,
                       "prefix":"±",
                       "format":"{value:.4f} °C",
-                      "pid_autotune":[
+                      "pid_autotune":"temp_swing"
-                         "temp_swing",
-                         "ch"
-                      ]
                    },
                    {
                      "name":"Lookback",
@@ -337,10 +310,7 @@
                      "value":3.0,
                      "step":0.1,
                      "format":"{value:.4f} s",
-                     "pid_autotune":[
+                     "pid_autotune":"lookback"
-                        "lookback",
-                        "ch"
-                     ]
                   },
                    {
                       "name":"Run",

pytec/pytec/gui/view/plot_options_menu.py

@@ -2,18 +2,22 @@ from PyQt6 import QtWidgets, QtGui
 
 
 class PlotOptionsMenu(QtWidgets.QMenu):
-    def __init__(self, max_samples=1000):
+    def __init__(self, channel_graphs, max_samples=1000):
         super().__init__()
+        self.channel_graphs = channel_graphs
+
         self.setTitle("Plot Settings")
 
         clear = QtGui.QAction("Clear graphs", self)
         self.addAction(clear)
         self.clear = clear
+        self.clear.triggered.connect(self.channel_graphs.clear_graphs)
 
         self.samples_spinbox = QtWidgets.QSpinBox()
         self.samples_spinbox.setRange(2, 100000)
         self.samples_spinbox.setSuffix(" samples")
         self.samples_spinbox.setValue(max_samples)
+        self.samples_spinbox.valueChanged.connect(self.channel_graphs.set_max_samples)
 
         limit_samples = QtWidgets.QWidgetAction(self)
         limit_samples.setDefaultWidget(self.samples_spinbox)

pytec/pytec/gui/view/tec_qt.ui

@@ -369,7 +369,7 @@
                <number>0</number>
               </property>
               <item>
-               <layout class="QHBoxLayout" name="report_layout" stretch="0,1,1,1">
+               <layout class="QHBoxLayout" name="report_layout" stretch="0,1,1">
                 <property name="spacing">
                  <number>6</number>
                 </property>
@@ -435,31 +435,6 @@
                   </property>
                  </widget>
                 </item>
-                <item>
-                 <widget class="QCheckBox" name="report_box">
-                  <property name="sizePolicy">
-                   <sizepolicy hsizetype="Fixed" vsizetype="Expanding">
-                    <horstretch>0</horstretch>
-                    <verstretch>0</verstretch>
-                   </sizepolicy>
-                  </property>
-                  <property name="maximumSize">
-                   <size>
-                    <width>80</width>
-                    <height>16777215</height>
-                   </size>
-                  </property>
-                  <property name="baseSize">
-                   <size>
-                    <width>80</width>
-                    <height>0</height>
-                   </size>
-                  </property>
-                  <property name="text">
-                   <string>Report</string>
-                  </property>
-                 </widget>
-                </item>
                 <item>
                  <widget class="QPushButton" name="report_apply_btn">
                   <property name="sizePolicy">

pytec/pytec/gui/view/thermostat_settings_menu.py

@@ -1,24 +1,24 @@
+import logging
 from PyQt6 import QtWidgets, QtGui, QtCore
-from PyQt6.QtCore import pyqtSignal, pyqtSlot
+from PyQt6.QtCore import pyqtSignal, pyqtSlot, QSignalBlocker
+from qasync import asyncSlot
+from pytec.gui.view.net_settings_input_diag import NetSettingsInputDiag
+from pytec.gui.model.thermostat import ThermostatConnectionState
 
 
-class ThermostatCtrlMenu(QtWidgets.QMenu):
+class ThermostatSettingsMenu(QtWidgets.QMenu):
-    fan_set_act = pyqtSignal(int)
+    def __init__(self, thermostat, info_box, style):
-    fan_auto_set_act = pyqtSignal(int)
-
-    connect_act = pyqtSignal()
-    reset_act = pyqtSignal(bool)
-    dfu_act = pyqtSignal(bool)
-    load_cfg_act = pyqtSignal(int)
-    save_cfg_act = pyqtSignal(int)
-    net_cfg_act = pyqtSignal(bool)
-
-    def __init__(self, style):
         super().__init__()
+        self._thermostat = thermostat
+        self._info_box = info_box
         self._style = style
         self.setTitle("Thermostat settings")
 
         self.hw_rev_data = dict()
+        self._thermostat.hw_rev_update.connect(self.hw_rev)
+        self._thermostat.connection_state_update.connect(
+            self.thermostat_state_change_handler
+        )
 
         self.fan_group = QtWidgets.QWidget()
         self.fan_group.setEnabled(False)
@@ -45,8 +45,9 @@ class ThermostatCtrlMenu(QtWidgets.QMenu):
         self.fan_pwm_warning.setMinimumSize(QtCore.QSize(16, 0))
         self.fan_layout.addWidget(self.fan_pwm_warning)
 
-        self.fan_power_slider.valueChanged.connect(self.fan_set_act)
+        self.fan_power_slider.valueChanged.connect(self.fan_set_request)
-        self.fan_auto_box.stateChanged.connect(self.fan_auto_set_act)
+        self.fan_auto_box.stateChanged.connect(self.fan_auto_set_request)
+        self._thermostat.fan_update.connect(self.fan_update)
 
         self.fan_lbl.setToolTip("Adjust the fan")
         self.fan_lbl.setText("Fan:")
@@ -58,40 +59,36 @@ class ThermostatCtrlMenu(QtWidgets.QMenu):
         self.fan = fan
 
         self.actionReset = QtGui.QAction("Reset Thermostat", self)
-        self.actionReset.triggered.connect(self.reset_act)
+        self.actionReset.triggered.connect(self.reset_request)
         self.addAction(self.actionReset)
 
         self.actionEnter_DFU_Mode = QtGui.QAction("Enter DFU Mode", self)
-        self.actionEnter_DFU_Mode.triggered.connect(self.dfu_act)
+        self.actionEnter_DFU_Mode.triggered.connect(self.dfu_request)
         self.addAction(self.actionEnter_DFU_Mode)
 
         self.actionnet_settings_input_diag = QtGui.QAction("Set IPV4 Settings", self)
-        self.actionnet_settings_input_diag.triggered.connect(self.net_cfg_act)
+        self.actionnet_settings_input_diag.triggered.connect(self.net_settings_request)
         self.addAction(self.actionnet_settings_input_diag)
 
-        @pyqtSlot(bool)
+        @asyncSlot(bool)
-        def load(_):
+        async def load(_):
-            self.load_cfg_act.emit(0)
+            await self._thermostat.load_cfg()
-            self.load_cfg_act.emit(1)
+
-            loaded = QtWidgets.QMessageBox(self)
+            self._info_box.display_info_box(
-            loaded.setWindowTitle("Config loaded")
+                "Config loaded", "All channel configs have been loaded from flash."
-            loaded.setText("All channel configs have been loaded from flash.")
+            )
-            loaded.setIcon(QtWidgets.QMessageBox.Icon.Information)
-            loaded.show()
 
         self.actionLoad_all_configs = QtGui.QAction("Load Config", self)
         self.actionLoad_all_configs.triggered.connect(load)
         self.addAction(self.actionLoad_all_configs)
 
-        @pyqtSlot(bool)
+        @asyncSlot(bool)
-        def save(_):
+        async def save(_):
-            self.save_cfg_act.emit(0)
+            await self._thermostat.save_cfg()
-            self.save_cfg_act.emit(1)
+
-            saved = QtWidgets.QMessageBox(self)
+            self._info_box.display_info_box(
-            saved.setWindowTitle("Config saved")
+                "Config saved", "All channel configs have been saved to flash."
-            saved.setText("All channel configs have been saved to flash.")
+            )
-            saved.setIcon(QtWidgets.QMessageBox.Icon.Information)
-            saved.show()
 
         self.actionSave_all_configs = QtGui.QAction("Save Config", self)
         self.actionSave_all_configs.triggered.connect(save)
@@ -127,6 +124,18 @@ class ThermostatCtrlMenu(QtWidgets.QMenu):
         self.actionAbout_Thermostat.triggered.connect(about_thermostat)
         self.addAction(self.actionAbout_Thermostat)
 
+    @pyqtSlot(dict)
+    def fan_update(self, fan_settings):
+        logging.debug(fan_settings)
+        if fan_settings is None:
+            return
+        with QSignalBlocker(self.fan_power_slider):
+            self.fan_power_slider.setValue(
+                fan_settings["fan_pwm"] or 100  # 0 = PWM off = full strength
+            )
+        with QSignalBlocker(self.fan_auto_box):
+            self.fan_auto_box.setChecked(fan_settings["auto_mode"])
+
     def set_fan_pwm_warning(self):
         if self.fan_power_slider.value() != 100:
             pixmapi = getattr(QtWidgets.QStyle.StandardPixmap, "SP_MessageBoxWarning")
@@ -139,7 +148,68 @@ class ThermostatCtrlMenu(QtWidgets.QMenu):
             self.fan_pwm_warning.setPixmap(QtGui.QPixmap())
             self.fan_pwm_warning.setToolTip("")
 
-    @pyqtSlot("QVariantMap")
+    @pyqtSlot(ThermostatConnectionState)
+    def thermostat_state_change_handler(self, state):
+        if state == ThermostatConnectionState.DISCONNECTED:
+            self.fan_pwm_warning.setPixmap(QtGui.QPixmap())
+            self.fan_pwm_warning.setToolTip("")
+
+    @pyqtSlot(dict)
     def hw_rev(self, hw_rev):
         self.hw_rev_data = hw_rev
         self.fan_group.setEnabled(self.hw_rev_data["settings"]["fan_available"])
+
+    @asyncSlot(int)
+    async def fan_set_request(self, value):
+        assert self._thermostat.connected()
+
+        if self.fan_auto_box.isChecked():
+            with QSignalBlocker(self.fan_auto_box):
+                self.fan_auto_box.setChecked(False)
+        await self._thermostat.set_fan(value)
+        if not self.hw_rev_data["settings"]["fan_pwm_recommended"]:
+            self.set_fan_pwm_warning()
+
+    @asyncSlot(int)
+    async def fan_auto_set_request(self, enabled):
+        assert self._thermostat.connected()
+
+        if enabled:
+            await self._thermostat.set_fan("auto")
+            self.fan_update(await self._thermostat.get_fan())
+        else:
+            await self.thermostat.set_fan(
+                self.fan_power_slider.value()
+            )
+
+    @asyncSlot(bool)
+    async def reset_request(self, _):
+        assert self._thermostat.connected()
+
+        await self._thermostat.reset()
+        await self._thermostat.end_session()
+        self._thermostat.connection_state = ThermostatConnectionState.DISCONNECTED
+
+    @asyncSlot(bool)
+    async def dfu_request(self, _):
+        assert self._thermostat.connected()
+
+        await self._thermostat.dfu()
+        await self._thermostat.end_session()
+        self._thermostat.connection_state = ThermostatConnectionState.DISCONNECTED
+
+    @asyncSlot(bool)
+    async def net_settings_request(self, _):
+        assert self._thermostat.connected()
+
+        ipv4 = await self._thermostat.get_ipv4()
+        self.net_settings_input_diag = NetSettingsInputDiag(ipv4["addr"])
+        self.net_settings_input_diag.set_ipv4_act.connect(self.set_net_settings_request)
+
+    @asyncSlot(str)
+    async def set_net_settings_request(self, ipv4_settings):
+        assert self._thermostat.connected()
+
+        await self._thermostat.set_ipv4(ipv4_settings)
+        await self._thermostat.end_session()
+        self._thermostat.connection_state = ThermostatConnectionState.DISCONNECTED

pytec/pytec/gui/view/waitingspinnerwidget.py

@@ -67,16 +67,30 @@ class QtWaitingSpinner(QWidget):
         painter.setPen(Qt.PenStyle.NoPen)
         for i in range(0, self._numberOfLines):
             painter.save()
-            painter.translate(self._innerRadius + self._lineLength, self._innerRadius + self._lineLength)
+            painter.translate(
+                self._innerRadius + self._lineLength,
+                self._innerRadius + self._lineLength,
+            )
             rotateAngle = float(360 * i) / float(self._numberOfLines)
             painter.rotate(rotateAngle)
             painter.translate(self._innerRadius, 0)
-            distance = self.lineCountDistanceFromPrimary(i, self._currentCounter, self._numberOfLines)
+            distance = self.lineCountDistanceFromPrimary(
-            color = self.currentLineColor(distance, self._numberOfLines, self._trailFadePercentage,
+                i, self._currentCounter, self._numberOfLines
-                                          self._minimumTrailOpacity, self._color)
+            )
+            color = self.currentLineColor(
+                distance,
+                self._numberOfLines,
+                self._trailFadePercentage,
+                self._minimumTrailOpacity,
+                self._color,
+            )
             painter.setBrush(color)
-            painter.drawRoundedRect(QRect(0, int(-self._lineWidth / 2), self._lineLength, self._lineWidth), self._roundness,
+            painter.drawRoundedRect(
-                                    self._roundness, Qt.SizeMode.RelativeSize)
+                QRect(0, int(-self._lineWidth / 2), self._lineLength, self._lineWidth),
+                self._roundness,
+                self._roundness,
+                Qt.SizeMode.RelativeSize,
+            )
             painter.restore()
 
     def start(self):
@@ -160,7 +174,9 @@ class QtWaitingSpinner(QWidget):
         self.setFixedSize(self.size, self.size)
 
     def updateTimer(self):
-        self._timer.setInterval(int(1000 / (self._numberOfLines * self._revolutionsPerSecond)))
+        self._timer.setInterval(
+            int(1000 / (self._numberOfLines * self._revolutionsPerSecond))
+        )
 
     def lineCountDistanceFromPrimary(self, current, primary, totalNrOfLines):
         distance = primary - current
@@ -168,7 +184,9 @@ class QtWaitingSpinner(QWidget):
             distance += totalNrOfLines
         return distance
 
-    def currentLineColor(self, countDistance, totalNrOfLines, trailFadePerc, minOpacity, colorinput):
+    def currentLineColor(
+        self, countDistance, totalNrOfLines, trailFadePerc, minOpacity, colorinput
+    ):
         color = QColor(colorinput)
         if countDistance == 0:
             return color
@@ -186,7 +204,7 @@ class QtWaitingSpinner(QWidget):
         return color
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     app = QApplication([])
     waiting_spinner = QtWaitingSpinner()
     waiting_spinner.show()

pytec/pytec/gui/view/zero_limits_warning_view.py

@@ -3,15 +3,24 @@ from PyQt6 import QtWidgets, QtGui
 
 
 class ZeroLimitsWarningView(QObject):
-    def __init__(self, style, limit_warning):
+    def __init__(self, thermostat, style, limit_warning):
         super().__init__()
+        self._thermostat = thermostat
+        self._thermostat.pwm_update.connect(self.set_limits_warning)
         self._lbl = limit_warning
         self._style = style
 
-    @pyqtSlot("QVariantList")
+    @pyqtSlot(list)
-    def set_limits_warning(self, channels_zeroed_limits: list):
+    def set_limits_warning(self, pwm_data: list):
-        channel_disabled = [False, False]
+        channels_zeroed_limits = [set() for i in range(self._thermostat.NUM_CHANNELS)]
 
+        for pwm_params in pwm_data:
+            channel = pwm_params["channel"]
+            for limit in "max_i_pos", "max_i_neg", "max_v":
+                if pwm_params[limit]["value"] == 0.0:
+                    channels_zeroed_limits[channel].add(limit)
+
+        channel_disabled = [False, False]
         report_str = "The following output limit(s) are set to zero:\n"
         for ch, zeroed_limits in enumerate(channels_zeroed_limits):
             if {"max_i_pos", "max_i_neg"}.issubset(zeroed_limits):

pytec/tec_qt.py

@@ -1,26 +1,24 @@
-from pytec.gui.view.zero_limits_warning import ZeroLimitsWarningView
+"""GUI for the Sinara 8451 Thermostat"""
-from pytec.gui.view.net_settings_input_diag import NetSettingsInputDiag
+
-from pytec.gui.view.thermostat_ctrl_menu import ThermostatCtrlMenu
+import json
-from pytec.gui.view.conn_menu import ConnMenu
+import asyncio
+import logging
+import argparse
+import importlib.resources
+import qasync
+from qasync import asyncSlot, asyncClose
+from autotune import PIDAutotuneState
+from PyQt6 import QtWidgets, QtGui, uic
+from PyQt6.QtCore import pyqtSlot
+from pytec.gui.model.thermostat import Thermostat, ThermostatConnectionState
+from pytec.gui.model.pid_autotuner import PIDAutoTuner
+from pytec.gui.view.zero_limits_warning_view import ZeroLimitsWarningView
+from pytec.gui.view.thermostat_settings_menu import ThermostatSettingsMenu
+from pytec.gui.view.connection_details_menu import ConnectionDetailsMenu
 from pytec.gui.view.plot_options_menu import PlotOptionsMenu
 from pytec.gui.view.live_plot_view import LiveDataPlotter
 from pytec.gui.view.ctrl_panel import CtrlPanel
 from pytec.gui.view.info_box import InfoBox
-from pytec.gui.model.pid_autotuner import PIDAutoTuner
-from pytec.gui.model.thermostat import WrappedClient, Thermostat
-import json
-from autotune import PIDAutotuneState
-from qasync import asyncSlot, asyncClose
-import qasync
-from pytec.aioclient import StoppedConnecting
-import asyncio
-import logging
-import argparse
-from PyQt6 import QtWidgets, QtGui, uic
-from PyQt6.QtCore import QSignalBlocker, pyqtSlot
-import pyqtgraph as pg
-from functools import partial
-import importlib.resources
 
 
 def get_argparser():
@@ -30,9 +28,9 @@ def get_argparser():
         "--connect",
         default=None,
         action="store_true",
-        help="Automatically connect to the specified Thermostat in IP:port format",
+        help="Automatically connect to the specified Thermostat in host:port format",
     )
-    parser.add_argument("IP", metavar="ip", default=None, nargs="?")
+    parser.add_argument("HOST", metavar="host", default=None, nargs="?")
     parser.add_argument("PORT", metavar="port", default=None, nargs="?")
     parser.add_argument(
         "-l",
@@ -55,353 +53,169 @@ class MainWindow(QtWidgets.QMainWindow):
     NUM_CHANNELS = 2
 
     def __init__(self, args):
-        super(MainWindow, self).__init__()
+        super().__init__()
 
         ui_file_path = importlib.resources.files("pytec.gui.view").joinpath("tec_qt.ui")
         uic.loadUi(ui_file_path, self)
 
-        self.hw_rev_data = None
+        self._info_box = InfoBox()
-        self.info_box = InfoBox()
 
-        self.client = WrappedClient(self)
+        # Models
-        self.client.connection_error.connect(self.bail)
+        self._thermostat = Thermostat(self, self.report_refresh_spin.value())
-
+        self._connecting_task = None
-        self.thermostat = Thermostat(
+        self._thermostat.connection_state_update.connect(
-            self, self.client, self.report_refresh_spin.value()
+            self._on_connection_state_changed
         )
 
-        self.autotuners = PIDAutoTuner(self, self.client, 2)
+        self._autotuners = PIDAutoTuner(self, self._thermostat, 2)
+        self._autotuners.autotune_state_changed.connect(
+            self._on_pid_autotune_state_changed
+        )
 
+        # Handlers for disconnections
+        async def autotune_disconnect():
+            for ch in range(self.NUM_CHANNELS):
+                if self._autotuners.get_state(ch) != PIDAutotuneState.STATE_OFF:
+                    await self._autotuners.stop_pid_from_running(ch)
+
+        self._thermostat.disconnect_cb = autotune_disconnect
+
+        @pyqtSlot()
+        def handle_connection_error():
+            self._info_box.display_info_box(
+                "Connection Error", "Thermostat connection lost. Is it unplugged?"
+            )
+
+        self._thermostat.connection_error.connect(handle_connection_error)
+
+        # Control Panel
         def get_ctrl_panel_config(args):
-            with open(args.param_tree, "r") as f:
+            with open(args.param_tree, "r", encoding="utf-8") as f:
                 return json.load(f)["ctrl_panel"]
 
-        param_tree_sigActivated_handles = [
+        self._ctrl_panel_view = CtrlPanel(
-            [
+            self._thermostat,
-                [["Save to flash"], partial(self.thermostat.save_cfg, ch)],
+            self._autotuners,
-                [["Load from flash"], partial(self.thermostat.load_cfg, ch)],
+            self._info_box,
-                [
-                    ["PID Config", "PID Auto Tune", "Run"],
-                    partial(self.pid_auto_tune_request, ch),
-                ],
-            ]
-            for ch in range(self.NUM_CHANNELS)
-        ]
-        self.thermostat.info_box_trigger.connect(self.info_box.display_info_box)
-
-        self.zero_limits_warning = ZeroLimitsWarningView(
-            self.style(), self.limits_warning
-        )
-        self.ctrl_panel_view = CtrlPanel(
             [self.ch0_tree, self.ch1_tree],
             get_ctrl_panel_config(args),
-            self.send_command,
-            param_tree_sigActivated_handles,
-        )
-        self.ctrl_panel_view.set_zero_limits_warning_sig.connect(
-            self.zero_limits_warning.set_limits_warning
         )
 
-        self.thermostat.fan_update.connect(self.fan_update)
+        # Graphs
-        self.thermostat.report_update.connect(self.ctrl_panel_view.update_report)
+        self._channel_graphs = LiveDataPlotter(
-        self.thermostat.report_update.connect(self.autotuners.tick)
+            self._thermostat,
-        self.thermostat.report_update.connect(self.pid_autotune_handler)
-        self.thermostat.pid_update.connect(self.ctrl_panel_view.update_pid)
-        self.thermostat.pwm_update.connect(self.ctrl_panel_view.update_pwm)
-        self.thermostat.thermistor_update.connect(
-            self.ctrl_panel_view.update_thermistor
-        )
-        self.thermostat.postfilter_update.connect(
-            self.ctrl_panel_view.update_postfilter
-        )
-        self.thermostat.interval_update.connect(
-            self.autotuners.update_sampling_interval
-        )
-        self.report_apply_btn.clicked.connect(
-            lambda: self.thermostat.set_update_s(self.report_refresh_spin.value())
-        )
-
-        self.channel_graphs = LiveDataPlotter(
             [
                 [getattr(self, f"ch{ch}_t_graph"), getattr(self, f"ch{ch}_i_graph")]
                 for ch in range(self.NUM_CHANNELS)
-            ]
+            ],
         )
 
-        self.thermostat.report_update.connect(self.channel_graphs.update_report)
+        # Bottom bar menus
-        self.thermostat.pid_update.connect(self.channel_graphs.update_pid)
+        self.connection_details_menu = ConnectionDetailsMenu(
-
+            self._thermostat, self.connect_btn
-        self.plot_options_menu = PlotOptionsMenu()
-        self.plot_options_menu.clear.triggered.connect(self.clear_graphs)
-        self.plot_options_menu.samples_spinbox.valueChanged.connect(
-            self.channel_graphs.set_max_samples
         )
-        self.plot_settings.setMenu(self.plot_options_menu)
+        self.connect_btn.setMenu(self.connection_details_menu)
 
-        self.conn_menu = ConnMenu()
+        self._thermostat_settings_menu = ThermostatSettingsMenu(
-        self.connect_btn.setMenu(self.conn_menu)
+            self._thermostat, self._info_box, self.style()
+        )
+        self.thermostat_settings.setMenu(self._thermostat_settings_menu)
 
-        self.thermostat_ctrl_menu = ThermostatCtrlMenu(self.style())
+        self._plot_options_menu = PlotOptionsMenu(self._channel_graphs)
-        self.thermostat_ctrl_menu.fan_set_act.connect(self.fan_set_request)
+        self.plot_settings.setMenu(self._plot_options_menu)
-        self.thermostat_ctrl_menu.fan_auto_set_act.connect(self.fan_auto_set_request)
-        self.thermostat_ctrl_menu.reset_act.connect(self.reset_request)
-        self.thermostat_ctrl_menu.dfu_act.connect(self.dfu_request)
-        self.thermostat_ctrl_menu.save_cfg_act.connect(self.save_cfg_request)
-        self.thermostat_ctrl_menu.load_cfg_act.connect(self.load_cfg_request)
-        self.thermostat_ctrl_menu.net_cfg_act.connect(self.net_settings_request)
-
-        self.thermostat.hw_rev_update.connect(self.thermostat_ctrl_menu.hw_rev)
-        self.thermostat_settings.setMenu(self.thermostat_ctrl_menu)
 
+        # Status line
+        self._zero_limits_warning_view = ZeroLimitsWarningView(
+            self._thermostat, self.style(), self.limits_warning
+        )
         self.loading_spinner.hide()
 
-        if args.connect:
+        self.report_apply_btn.clicked.connect(
-            if args.IP:
+            lambda: self._thermostat.set_update_s(self.report_refresh_spin.value())
-                self.host_set_line.setText(args.IP)
-            if args.PORT:
-                self.port_set_spin.setValue(int(args.PORT))
-            self.connect_btn.click()
-
-    def clear_graphs(self):
-        self.channel_graphs.clear_graphs()
-
-    async def _on_connection_changed(self, result):
-        self.graph_group.setEnabled(result)
-        self.report_group.setEnabled(result)
-        self.thermostat_settings.setEnabled(result)
-
-        self.conn_menu.host_set_line.setEnabled(not result)
-        self.conn_menu.port_set_spin.setEnabled(not result)
-        self.connect_btn.setText("Disconnect" if result else "Connect")
-        if result:
-            self.hw_rev_data = await self.thermostat.get_hw_rev()
-            logging.debug(self.hw_rev_data)
-
-            self._status(self.hw_rev_data)
-            self.thermostat.start_watching()
-        else:
-            self.status_lbl.setText("Disconnected")
-            self.background_task_lbl.setText("Ready.")
-            self.loading_spinner.hide()
-            self.loading_spinner.stop()
-            self.thermostat_ctrl_menu.fan_pwm_warning.setPixmap(QtGui.QPixmap())
-            self.thermostat_ctrl_menu.fan_pwm_warning.setToolTip("")
-            self.clear_graphs()
-            self.report_box.setChecked(False)
-            if not Thermostat.connecting or Thermostat.connected:
-                for ch in range(self.NUM_CHANNELS):
-                    if self.autotuners.get_state(ch) != PIDAutotuneState.STATE_OFF:
-                        await self.autotuners.stop_pid_from_running(ch)
-            await self.thermostat.set_report_mode(False)
-            self.thermostat.stop_watching()
-
-    def _status(self, hw_rev_d: dict):
-        logging.debug(hw_rev_d)
-        self.status_lbl.setText(
-            f"Connected to Thermostat v{hw_rev_d['rev']['major']}.{hw_rev_d['rev']['minor']}"
         )
 
-    @pyqtSlot("QVariantMap")
-    def fan_update(self, fan_settings):
-        logging.debug(fan_settings)
-        if fan_settings is None:
-            return
-        with QSignalBlocker(self.thermostat_ctrl_menu.fan_power_slider):
-            self.thermostat_ctrl_menu.fan_power_slider.setValue(
-                fan_settings["fan_pwm"] or 100  # 0 = PWM off = full strength
-            )
-        with QSignalBlocker(self.thermostat_ctrl_menu.fan_auto_box):
-            self.thermostat_ctrl_menu.fan_auto_box.setChecked(fan_settings["auto_mode"])
-        if not self.hw_rev_data["settings"]["fan_pwm_recommended"]:
-            self.thermostat_ctrl_menu.set_fan_pwm_warning()
-
-    @asyncSlot(int)
-    async def on_report_box_stateChanged(self, enabled):
-        await self.thermostat.set_report_mode(enabled)
-
     @asyncClose
-    async def closeEvent(self, event):
+    async def closeEvent(self, _event):
         try:
-            await self.bail()
+            await self._thermostat.end_session()
+            self._thermostat.connection_state = ThermostatConnectionState.DISCONNECTED
         except:
             pass
 
-    @asyncSlot()
+    @pyqtSlot(ThermostatConnectionState)
-    async def on_connect_btn_clicked(self):
+    def _on_connection_state_changed(self, state):
-        host, port = (
+        self.graph_group.setEnabled(state == ThermostatConnectionState.CONNECTED)
-            self.conn_menu.host_set_line.text(),
+        self.thermostat_settings.setEnabled(
-            self.conn_menu.port_set_spin.value(),
+            state == ThermostatConnectionState.CONNECTED
         )
-        try:
+        self.report_group.setEnabled(state == ThermostatConnectionState.CONNECTED)
-            if not (self.client.connecting() or self.client.connected()):
+
-                self.status_lbl.setText("Connecting...")
+        match state:
+            case ThermostatConnectionState.CONNECTED:
+                self.connect_btn.setText("Disconnect")
+                self.status_lbl.setText(
+                    "Connected to Thermostat v"
+                    f"{self._thermostat.hw_rev['rev']['major']}."
+                    f"{self._thermostat.hw_rev['rev']['minor']}"
+                )
+
+            case ThermostatConnectionState.CONNECTING:
                 self.connect_btn.setText("Stop")
-                self.conn_menu.host_set_line.setEnabled(False)
+                self.status_lbl.setText("Connecting...")
-                self.conn_menu.port_set_spin.setEnabled(False)
 
-                try:
+            case ThermostatConnectionState.DISCONNECTED:
-                    await self.client.start_session(host=host, port=port, timeout=5)
+                self.connect_btn.setText("Connect")
-                except StoppedConnecting:
+                self.status_lbl.setText("Disconnected")
-                    return
-                await self._on_connection_changed(True)
-            else:
-                await self.bail()
 
-        # TODO: Remove asyncio.TimeoutError in Python 3.11
+    @pyqtSlot(int, PIDAutotuneState)
-        except (OSError, TimeoutError, asyncio.TimeoutError):
+    def _on_pid_autotune_state_changed(self, _ch, _state):
-            try:
+        autotuning_channels = []
-                await self.bail()
-            except ConnectionResetError:
-                pass
-
-    @asyncSlot()
-    async def bail(self):
-        await self._on_connection_changed(False)
-        await self.client.end_session()
-
-    @asyncSlot(object, object)
-    async def send_command(self, param, changes):
-        """Translates parameter tree changes into thermostat set_param calls"""
-        ch = param.channel
-
-        for inner_param, change, data in changes:
-            if change == "value":
-                if inner_param.opts.get("param", None) is not None:
-                    if inner_param.opts.get("suffix", None) == "mA":
-                        data /= 1000  # Given in mA
-
-                    thermostat_param = inner_param.opts["param"]
-                    if thermostat_param[1] == "ch":
-                        thermostat_param[1] = ch
-
-                    if inner_param.name() == "Postfilter Rate" and data is None:
-                        set_param_args = (*thermostat_param[:2], "off")
-                    else:
-                        set_param_args = (*thermostat_param, data)
-                    param.child(*param.childPath(inner_param)).setOpts(lock=True)
-                    await self.client.set_param(*set_param_args)
-                    param.child(*param.childPath(inner_param)).setOpts(lock=False)
-
-                if inner_param.opts.get("pid_autotune", None) is not None:
-                    auto_tuner_param = inner_param.opts["pid_autotune"][0]
-                    if inner_param.opts["pid_autotune"][1] != "ch":
-                        ch = inner_param.opts["pid_autotune"][1]
-                    self.autotuners.set_params(auto_tuner_param, ch, data)
-
-                if inner_param.opts.get("activaters", None) is not None:
-                    activater = inner_param.opts["activaters"][
-                        inner_param.opts["limits"].index(data)
-                    ]
-                    if activater is not None:
-                        if activater[1] == "ch":
-                            activater[1] = ch
-                        await self.client.set_param(*activater)
-
-    @asyncSlot()
-    async def pid_auto_tune_request(self, ch=0):
-        match self.autotuners.get_state(ch):
-            case PIDAutotuneState.STATE_OFF | PIDAutotuneState.STATE_FAILED:
-                self.autotuners.load_params_and_set_ready(ch)
-
-            case PIDAutotuneState.STATE_READY | PIDAutotuneState.STATE_RELAY_STEP_UP | PIDAutotuneState.STATE_RELAY_STEP_DOWN:
-                await self.autotuners.stop_pid_from_running(ch)
-                # To Update the UI elements
-                self.pid_autotune_handler([])
-
-    @asyncSlot(list)
-    async def pid_autotune_handler(self, _):
-        ch_tuning = []
         for ch in range(self.NUM_CHANNELS):
-            match self.autotuners.get_state(ch):
+            if self._autotuners.get_state(ch) in {
-                case PIDAutotuneState.STATE_OFF:
+                PIDAutotuneState.STATE_READY,
-                    self.ctrl_panel_view.change_params_title(
+                PIDAutotuneState.STATE_RELAY_STEP_UP,
-                        ch, ("PID Config", "PID Auto Tune", "Run"), "Run"
+                PIDAutotuneState.STATE_RELAY_STEP_DOWN,
-                    )
+            }:
-                case PIDAutotuneState.STATE_READY | PIDAutotuneState.STATE_RELAY_STEP_UP | PIDAutotuneState.STATE_RELAY_STEP_DOWN:
+                autotuning_channels.append(ch)
-                    self.ctrl_panel_view.change_params_title(
-                        ch, ("PID Config", "PID Auto Tune", "Run"), "Stop"
-                    )
-                    ch_tuning.append(ch)
 
-                case PIDAutotuneState.STATE_SUCCEEDED:
+        if len(autotuning_channels) == 0:
-                    self.info_box.display_info_box(
-                        "PID Autotune Success",
-                        f"Channel {ch} PID Config has been loaded to Thermostat. Regulating temperature.",
-                    )
-                    self.info_box.show()
-
-                case PIDAutotuneState.STATE_FAILED:
-                    self.info_box.display_info_box(
-                        "PID Autotune Failed", f"Channel {ch} PID Autotune has failed."
-                    )
-                    self.info_box.show()
-
-        if len(ch_tuning) == 0:
             self.background_task_lbl.setText("Ready.")
             self.loading_spinner.hide()
             self.loading_spinner.stop()
         else:
             self.background_task_lbl.setText(
-                "Autotuning channel {ch}...".format(ch=ch_tuning)
+                f"Autotuning channel {autotuning_channels}..."
             )
             self.loading_spinner.start()
             self.loading_spinner.show()
 
-    @asyncSlot(int)
+    @asyncSlot()
-    async def fan_set_request(self, value):
+    async def on_connect_btn_clicked(self):
-        if not self.client.connected():
+        match self._thermostat.connection_state:
-            return
+            case ThermostatConnectionState.DISCONNECTED:
-        if self.thermostat_ctrl_menu.fan_auto_box.isChecked():
+                self._connecting_task = asyncio.current_task()
-            with QSignalBlocker(self.thermostat_ctrl_menu.fan_auto_box):
+                self._thermostat.connection_state = ThermostatConnectionState.CONNECTING
-                self.thermostat_ctrl_menu.fan_auto_box.setChecked(False)
+                await self._thermostat.start_session(
-        await self.client.set_fan(value)
+                    host=self.connection_details_menu.host_set_line.text(),
-        if not self.hw_rev_data["settings"]["fan_pwm_recommended"]:
+                    port=self.connection_details_menu.port_set_spin.value(),
-            self.thermostat_ctrl_menu.set_fan_pwm_warning()
+                )
+                self._connecting_task = None
+                self._thermostat.connection_state = ThermostatConnectionState.CONNECTED
+                self._thermostat.start_watching()
 
-    @asyncSlot(int)
+            case ThermostatConnectionState.CONNECTING:
-    async def fan_auto_set_request(self, enabled):
+                self._connecting_task.cancel()
-        if not self.client.connected():
+                self._connecting_task = None
-            return
+                await self._thermostat.end_session()
-        if enabled:
+                self._thermostat.connection_state = (
-            await self.client.set_fan("auto")
+                    ThermostatConnectionState.DISCONNECTED
-            self.fan_update(await self.client.get_fan())
-        else:
-            await self.client.set_fan(
-                self.thermostat_ctrl_menu.fan_power_slider.value()
                 )
 
-    @asyncSlot(int)
+            case ThermostatConnectionState.CONNECTED:
-    async def save_cfg_request(self, ch):
+                await self._thermostat.end_session()
-        await self.thermostat.save_cfg(str(ch))
+                self._thermostat.connection_state = (
-
+                    ThermostatConnectionState.DISCONNECTED
-    @asyncSlot(int)
+                )
-    async def load_cfg_request(self, ch):
-        await self.thermostat.load_cfg(str(ch))
-
-    @asyncSlot(bool)
-    async def dfu_request(self, _):
-        await self._on_connection_changed(False)
-        await self.thermostat.dfu()
-
-    @asyncSlot(bool)
-    async def reset_request(self, _):
-        await self._on_connection_changed(False)
-        await self.thermostat.reset()
-        await asyncio.sleep(0.1)  # Wait for the reset to start
-
-        self.connect_btn.click()  # Reconnect
-
-    @asyncSlot(bool)
-    async def net_settings_request(self, _):
-        ipv4 = await self.thermostat.get_ipv4()
-        self.net_settings_input_diag = NetSettingsInputDiag(ipv4["addr"])
-        self.net_settings_input_diag.set_ipv4_act.connect(self.set_net_settings_request)
-
-    @asyncSlot(str)
-    async def set_net_settings_request(self, ipv4_settings):
-        await self.thermostat.set_ipv4(ipv4_settings)
-        await self.thermostat._client.end_session()
-        await self._on_connection_changed(False)
 
 
 async def coro_main():
@@ -414,12 +228,21 @@ async def coro_main():
     app = QtWidgets.QApplication.instance()
     app.aboutToQuit.connect(app_quit_event.set)
     app.setWindowIcon(
-        QtGui.QIcon(str(importlib.resources.files("pytec.gui.resources").joinpath("artiq.ico")))
+        QtGui.QIcon(
+            str(importlib.resources.files("pytec.gui.resources").joinpath("artiq.ico"))
+        )
     )
 
     main_window = MainWindow(args)
     main_window.show()
 
+    if args.connect:
+        if args.HOST:
+            main_window.connection_details_menu.host_set_line.setText(args.HOST)
+        if args.PORT:
+            main_window.connection_details_menu.port_set_spin.setValue(int(args.PORT))
+        main_window.connect_btn.click()
+
     await app_quit_event.wait()