State

flake.nix

@@ -118,20 +118,6 @@
         ];
       };
 
-      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 $outname
-          fi
-        done
-        '';
-
       thermostat_gui = pkgs.python3Packages.buildPythonPackage {
         pname = "thermostat_gui";
         version = "0.0.0";
@@ -177,7 +163,6 @@
             rust
             openocd
             dfu-util
-            pytec-dev-wrappers
           ]
           ++ (with python3Packages; [
             numpy
@@ -189,9 +174,6 @@
             pglive
             qtextras
           ]);
-          shellHook = ''
-            export PYTHONPATH=`pwd`/pytec:$PYTHONPATH
-          '';
       };
       defaultPackage.x86_64-linux = thermostat;
     };

pytec/examples/aioexample.py

@@ -4,7 +4,7 @@ from pytec.aioclient import AsyncioClient
 
 async def main():
     tec = AsyncioClient()
-    await tec.connect()  # (host="192.168.1.26", port=23)
+    await tec.start_session()  # (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())

pytec/pytec/aioclient.py

@@ -13,14 +13,13 @@ class AsyncioClient:
         self._writer = None
         self._command_lock = asyncio.Lock()
         self._report_mode_on = False
-        self.timeout = None
 
-    async def connect(self, host="192.168.1.26", port=23):
-        """Connect to Thermostat at specified host and port.
+    async def start_session(self, host="192.168.1.26", port=23):
+        """Start session to Thermostat at specified host and port.
 
         Example::
             client = AsyncioClient()
-            await client.connect()
+            await client.start_session()
         """
         self._reader, self._writer = await asyncio.open_connection(host, port)
         await self._check_zero_limits()
@@ -29,8 +28,8 @@ class AsyncioClient:
         """Returns True if client is connected"""
         return self._writer is not None
 
-    async def disconnect(self):
-        """Disconnect from the Thermostat"""
+    async def end_session(self):
+        """End session to Thermostat"""
 
         if self._writer is None:
             return
@@ -54,9 +53,7 @@ class AsyncioClient:
 
     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")
 
     async def _read_write(self, command):
@@ -70,7 +67,7 @@ class AsyncioClient:
             line = await self._read_write(command)
 
         response = json.loads(line)
-        logging.debug("%s: %s", command, response)
+        logging.debug(f"{command}: {response}")
         if "error" in response:
             raise CommandError(response["error"])
         return response
@@ -241,7 +238,7 @@ class AsyncioClient:
             self._writer.write("reset\n".encode("utf-8"))
             await self._writer.drain()
 
-        await self.disconnect()
+        await self.end_session()
 
     async def dfu(self):
         """Put the Thermostat in DFU update mode
@@ -254,7 +251,7 @@ class AsyncioClient:
             self._writer.write("dfu\n".encode("utf-8"))
             await self._writer.drain()
 
-        await self.disconnect()
+        await self.end_session()
 
     async def ipv4(self):
         """Get the IPv4 settings of the Thermostat"""

pytec/pytec/gui/model/thermostat.py

@@ -32,21 +32,20 @@ class Thermostat(QObject, metaclass=PropertyMeta):
         self._report_mode_task = None
         self._poll_for_report = True
         self.connection_errored = False
-        self.task = None
         super().__init__(parent)
 
     async def start_session(self, host, port):
-        await self._client.connect(host, port)
+        await self._client.start_session(host, port)
 
     async def run(self):
         self.task = asyncio.create_task(self.update_params())
         while True:
             if self.task.done():
                 try:
-                    self.task.result()
-                except OSError:
+                    _ = self.task.result()
+                except asyncio.TimeoutError:
                     logging.error(
-                        "Encountered an error while polling for information from Thermostat.",
+                        "Encountered an error while updating parameter tree.",
                         exc_info=True,
                     )
                     self.connection_error.emit()
@@ -104,7 +103,7 @@ class Thermostat(QObject, metaclass=PropertyMeta):
             ]
 
     async def end_session(self):
-        await self._client.disconnect()
+        await self._client.end_session()
         self.connection_errored = False
 
     async def set_ipv4(self, ipv4):

pytec/tec_qt.py

@@ -65,7 +65,6 @@ class MainWindow(QtWidgets.QMainWindow):
         self.thermostat = Thermostat(
             self, self.report_refresh_spin.value()
         )
-        self._connecting_task = None
 
         def handle_connection_error():
             self.info_box.display_info_box(
@@ -239,38 +238,40 @@ class MainWindow(QtWidgets.QMainWindow):
         except:
             pass
 
-    def _connecting(self):
-        self.status_lbl.setText("Connecting...")
-        self.connect_btn.setText("Stop")
-        self.conn_menu.host_set_line.setEnabled(False)
-        self.conn_menu.port_set_spin.setEnabled(False)
-
     @asyncSlot()
     async def on_connect_btn_clicked(self):
-        if (self._connecting_task is None) and (not self.thermostat.connected()):
-            host = self.conn_menu.host_set_line.text()
-            port = self.conn_menu.port_set_spin.value()
+        host, port = (
+            self.conn_menu.host_set_line.text(),
+            self.conn_menu.port_set_spin.value(),
+        )
 
-            self._connecting()
-            self._connecting_task = asyncio.create_task(
-                self.thermostat.start_session(host=host, port=port)
-            )
-            try:
-                await self._connecting_task
-            except (OSError, asyncio.CancelledError) as exc:
-                await self.bail()
-                if isinstance(exc, asyncio.CancelledError):
+        self._connecting_task = None
+        try:
+            if (self._connecting_task is None) or (not self.thermostat.connected()):
+                self.status_lbl.setText("Connecting...")
+                self.connect_btn.setText("Stop")
+                self.conn_menu.host_set_line.setEnabled(False)
+                self.conn_menu.port_set_spin.setEnabled(False)
+
+                try:
+                    self._connecting_task = asyncio.wait_for(
+                        self.thermostat.start_session(host=host, port=port), timeout=5
+                    )
+                    await self._connecting_task
+                except asyncio.TimeoutError:
                     return
-                raise
-            else:
                 await self._on_connection_changed(True)
-            finally:
-                self._connecting_task = None
+            else:
+                if self._connecting_task is not None:
+                    self._connecting_task.cancel()
+                await self.bail()
 
-        elif self._connecting_task is not None:
-            self._connecting_task.cancel()
-        else:
-            await self.bail()
+        # TODO: Remove asyncio.TimeoutError in Python 3.11
+        except (OSError, asyncio.TimeoutError):
+            try:
+                await self.bail()
+            except ConnectionResetError:
+                pass
 
     @asyncSlot()
     async def bail(self):