add new class for simultaneous acquisition of PSSS and gas detector values

app/spectralanalysis.py

@@ -6,12 +6,14 @@ athos_calibrated = 'SATFE10-PEPG046:FCUP-INTENSITY-CAL'
 aramis_uncalibrated = 'SARFE10-PBIG050-EVR0:CALCI'
 aramis_calibrated = 'SARFE10-PBPG050:HAMP-INTENSITY-CAL'
 channel_dict = {
-        'PSSS': ['SARFE10-PSSS059:SPECTRUM_Y', aramis_uncalibrated, aramis_calibrated],
+        'PSSS': ['SARFE10-PSSS059:SPECTRUM_Y'],
         'PMOS Maloja': ['SATOP21-PMOS127-2D:SPECTRUM_Y', athos_uncalibrated, athos_calibrated],
         'PMOS Furka': ['SATOP31-PMOS132-2D:SPECTRUM_Y', athos_uncalibrated, athos_calibrated],
-        'PSSS LB': ['SARFE10-PSSS059-LB:SPECTRUM_Y'], #, aramis_uncalibrated], #, aramis_calibrated],
+        'PSSS LB': ['SARFE10-PSSS059-LB:SPECTRUM_Y'],
+        'PSSS incl gasd': ['SARFE10-PSSS059:SPECTRUM_Y', aramis_uncalibrated, aramis_calibrated],
+        'PSSS LB incl gasd': ['SARFE10-PSSS059-LB:SPECTRUM_Y', aramis_uncalibrated, aramis_calibrated],
         }
-names = ['PSSS', 'PMOS Maloja', 'PMOS Furka', 'PSSS LB']
+names = ['PSSS', 'PMOS Maloja', 'PMOS Furka', 'PSSS LB', 'PSSS incl gasd', 'PSSS LB incl gasd']
 
 class SpectralAnalysis:
     def __init__(self):
@@ -57,3 +59,45 @@ class SpectralAnalysis:
     def getSpectrometerName(self):
         return self.channel
 
+class SpectralAnalysis2:
+    def __init__(self):
+        self.bs1 = BSCache(100000, 10000)
+        self.bs2 = BSCache(100000, 10000)
+        self.bs1.stop()
+        self.bs2.stop()
+        self.hasBStream=False
+
+    def connect_name(self, name):
+        channels = channel_dict[name]
+        self.bs1.channels.clear()
+        self.hasBStream = True
+        try:
+            self.bs1.get_vars(channels[:1])  # this starts the stream into the cache
+        except ValueError:
+            print('Cannot find requested channel %s in BS stream' % channels[0])
+            self.hasBStream=False
+        if len(channels) > 1:
+            try:
+                self.bs2.get_vars(channels[1:])  # this starts the stream into the cache
+            except ValueError:
+                print('Cannot find requested channel %s in BS stream' % channels[1:])
+                self.hasBStream=False
+        self.pv = PV(channels[0].replace('_Y','_X'))
+
+    def read_spectrum_axis(self):
+        return self.pv.value
+
+    def flush(self):
+        for _bs in self.bs1, self.bs2:
+            _bs.flush()
+
+    def read(self):
+        return next(self.bs1), next(self.bs2)
+
+    def terminate(self):
+        print('Stopping BSStream Thread...')
+        for _bs in self.bs1, self.bs2:
+            _bs.stop()
+            _bs.pt.running.clear() # for some reason I have to
+        self.pv.disconnect()
+