trv fix

Controll.py

@@ -1,9 +1,36 @@
 import sys
 import pysmu
 from PyQt5.QtWidgets import QApplication
+from PyQt5.QtCore import pyqtSignal, QObject
 from GUI import MainWindow
 from DeviceController import DeviceController
 
+class ControllerSignals(QObject):
+    started = pyqtSignal(str)   # serial
+    stopped = pyqtSignal(str)
+    error   = pyqtSignal(str, str)  # serial, msg
+
+signals = ControllerSignals()
+
+def make_on_start(ctrl, widget):
+    def _start(_widget=widget, _ctrl=ctrl):
+        # NICHT blockieren: nur anstoßen
+        try:
+            _ctrl.start()            # -> startet seine eigenen Threads
+            _widget.set_running(True)
+        except Exception as e:
+            signals.error.emit(_ctrl.dev.serial, str(e))
+    return _start
+
+def make_on_stop(ctrl, widget):
+    def _stop(_widget=widget, _ctrl=ctrl):
+        try:
+            _ctrl.stop()
+            _widget.set_running(False)
+        except Exception as e:
+            signals.error.emit(_ctrl.dev.serial, str(e))
+    return _stop
+
 def main():
     # 1) Geräte einsammeln (pysmu nur hier benutzen)
     sess = pysmu.Session()
@@ -33,11 +60,11 @@ def main():
     # 3) Liste befüllen (auf der INSTANZ, nicht auf der Klasse!)
     for i, serial in enumerate(serials):
         ctrl = controllers[serial]
-        win.add_list_item(
+        widget = win.add_list_item(
-            serial,
+            text=serial, 
-            i,
+            index=i,
-            make_on_start(ctrl),
+            on_start=lambda w, c=ctrl: make_on_start(c, w)(),
-            make_on_stop(ctrl),
+            on_stop =lambda w, c=ctrl: make_on_stop(c, w)()
         )
             
     # 4) Start

GUI.py

@@ -18,21 +18,17 @@ class ListItemWidget(QWidget):
 
         layout.addStretch()  # schiebt die Buttons nach rechts
 
-        btn1 = QPushButton("Start")
+        self.btn_start = QPushButton("Start")
-        btn2 = QPushButton("Stop")
+        self.btn_stop  = QPushButton("Stop")
-
+        self.btn_stop.setEnabled(False)
-        # Variante A: partial – übergibt index (und ignoriert das Qt-"checked")
+        self.btn_start.clicked.connect(lambda checked=False: on_start(self))
-        btn1.clicked.connect(partial(on_start, index))
+        self.btn_stop.clicked.connect(lambda checked=False: on_stop(self))
-        btn2.clicked.connect(partial(on_stop, index))
+        layout.addWidget(self.btn_start)
-
+        layout.addWidget(self.btn_stop)
-        # Variante B (gleichwertig): lambda
-        # btn1.clicked.connect(lambda checked=False, i=index: on_start(i))
-        # btn2.clicked.connect(lambda checked=False, i=index: on_stop(i))
-
-        layout.addWidget(btn1)
-        layout.addWidget(btn2)
-        layout.setContentsMargins(5, 2, 5, 2)
 
+    def set_running(self, running: bool):
+        self.btn_start.setEnabled(not running)
+        self.btn_stop.setEnabled(running)
 
 class MainWindow(QWidget):
     def __init__(self):