Show device info in status bar of the main window

gui/gui.py

@@ -117,6 +117,9 @@ def data_row(self, data, row):
             self.twinax.set_ylim(0, 10)
             self.canvas.draw()
 
+    def status_update(self, status):
+        self.statusBar().showMessage(status)
+
     def set_backend(self, backend):
         self.backend = backend
         backend.subscribe(self)

instr_thread.py

@@ -10,6 +10,7 @@ class InstrumentSignals(QObject):
     start = pyqtSignal()
     stop = pyqtSignal()
     data_row = pyqtSignal(dict)
+    status_update = pyqtSignal(str)
     command = pyqtSignal(dict)
 
 
@@ -31,8 +32,10 @@ def run(self):
         instruments = Instruments()
         self.instr = instruments.instr()
         if not self.instr:
+            self.signals.status_update.emit("No devices found")
             return
 
+        self.signals.status_update.emit("Connected to {} on {}".format(self.instr.name, self.instr.port))
         while self.loop:
             if len(self.commands) > 0:
                 self.handle_command(self.commands.pop(0))

instruments/px100.py

@@ -115,6 +115,7 @@ def probe(self):
         if not isinstance(self.device, visa.resources.SerialInstrument):
             return False
 
+        self.port = self.device.resource_name.split('::')[0].replace('ASRL', '')
         self.__setup_device()
         self.__clear_device()
 

main.py

@@ -23,6 +23,7 @@ def __init__(self):
     def instr_thread(self):
         self.instr_worker = InstrumentWorker()
         self.instr_worker.signals.data_row.connect(self.data_callback)
+        self.instr_worker.signals.status_update.connect(self.status_callback)
         self.threadpool.start(self.instr_worker)
         self.instr_worker.signals.start.emit()
 
@@ -34,6 +35,11 @@ def data_callback(self, data):
         for r in self.data_receivers:
             r.data_row(self.datastore, data)
 
+    def status_callback(self, status):
+        for r in self.data_receivers:
+            if hasattr(r, 'status_update'):
+                r.status_update(status)
+
     def send_command(self, command):
         self.instr_worker.signals.command.emit(command)