Basic support for HDX spectrometer

os_support/10-oceanoptics.rules

@@ -81,5 +81,7 @@ ATTR{idVendor}=="0547", ATTR{idProduct}=="2131", SYMLINK+="ezUSB-%n", MODE:="066
 ATTR{idVendor}=="0547", ATTR{idProduct}=="2235", SYMLINK+="ezUSB-FX-%n", MODE:="0666"
 # unprogrammed EzUSB-FX2
 ATTR{idVendor}=="04b4", ATTR{idProduct}=="8613", SYMLINK+="ezUSB-FX2-%n", MODE:="0666"
+# Ocean Insight Inc. HDX spectrometer
+ATTR{idVendor}=="2457", ATTR{idProduct}=="2003", SYMLINK+="oceanhdx-%n", MODE:="0666"
 
 LABEL="oceanoptics_rules_end"

src/seabreeze/pyseabreeze/devices.py

@@ -256,6 +256,8 @@ class TriggerMode(enum.IntEnum):
     OBP_NORMAL = 0x00
     OBP_EXTERNAL = 0x01
     OBP_INTERNAL = 0x02
+    OBP_EDGE = 0x01
+    OBP_LEVEL = 0x03
 
     @classmethod
     def supported(cls, *mode_strings):
@@ -1035,3 +1037,33 @@ class SPARK(SeaBreezeDevice):
         sbf.spectrometer.SeaBreezeSpectrometerFeatureSPARK,
         sbf.rawusb.SeaBreezeRawUSBBusAccessFeature,
     )
+
+class HDX(SeaBreezeDevice):
+
+    model_name = 'HDX'
+
+    # communication config
+    transport = (USBTransport, )
+    usb_product_id = 0x2003
+    usb_endpoint_map = EndPointMap(ep_out=0x01, lowspeed_in=0x81,
+                                   highspeed_in=0x82, highspeed_in2=0x86)
+    usb_protocol = OBPProtocol
+
+    # spectrometer config
+    dark_pixel_indices = DarkPixelIndices.from_ranges()
+    integration_time_min = 6000
+    integration_time_max = 10000000
+    integration_time_base = 1
+    spectrum_num_pixel = 2068
+    spectrum_raw_length = (2068 * 2) + 64  # XXX: Metadata
+    spectrum_max_value = 65535
+    trigger_modes = TriggerMode.supported("OBP_NORMAL", "OBP_LEVEL", "OBP_EDGE", "DISABLED")
+
+    # features
+    feature_classes = (
+        sbf.spectrometer.SeaBreezeSpectrometerFeatureHDX, 
+        sbf.rawusb.SeaBreezeRawUSBBusAccessFeature,
+        sbf.nonlinearity.NonlinearityCoefficientsFeatureOBP,
+        #sbf.continuousstrobe.SeaBreezeContinuousStrobeFeatureOBP, # Implementation untested
+        #sbf.straylightcoefficients.StrayLightCoefficientsFeatureOBP, # Implementation untested
+    )

src/seabreeze/pyseabreeze/features/spectrometer.py

@@ -565,3 +565,14 @@ class SeaBreezeSpectrometerFeatureVENTANA(SeaBreezeSpectrometerFeatureOBP):
 
 class SeaBreezeSpectrometerFeatureSPARK(SeaBreezeSpectrometerFeatureOBP):
     pass
+
+class SeaBreezeSpectrometerFeatureHDX(SeaBreezeSpectrometerFeatureOBP):
+    def _get_spectrum_raw(self):
+        timeout = int(
+            self._integration_time_max * 1e-3
+            + self.protocol.transport.default_timeout_ms
+        )
+        # the message type is different than the default defined in the protocol,
+        # requires addition of a new message type in protocol to work
+        datastring = self.protocol.query(0x00101000, timeout_ms=timeout)
+        return numpy.fromstring(datastring, dtype=numpy.uint8)

src/seabreeze/pyseabreeze/protocol.py

@@ -159,6 +159,7 @@ class OBPProtocol(ProtocolInterface):
         for code, msg in {
             0x00000100: "",  # GET_SERIAL
             0x00100928: "",  # GET_BUF_SPEC32_META
+            0x00101000: "",  # GET_RAW_SPECTRUM_NOW_HDX
             0x00101100: "",  # GET_RAW_SPECTRUM_NOW
             0x00110010: "<L",  # SET_ITIME_USEC
             0x00110110: "<B",  # SET_TRIG_MODE