1 files changed, 81 insertions, 0 deletions

diff --git a/glucometerutils/drivers/contourusb.py b/glucometerutils/drivers/contourusb.py
new file mode 100644
index 0000000..6c333fb
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+++ b/glucometerutils/drivers/contourusb.py
@@ -0,0 +1,81 @@
+# -*- coding: utf-8 -*-
+#
+# SPDX-License-Identifier: MIT
+"""Driver for ContourUSB devices.
+
+Supported features:
+    - get readings (blood glucose), including comments;
+    - get date and time;
+    - get serial number and software version;
+    - get device info (e.g. unit)
+
+Expected device path: /dev/hidraw4 or similar HID device. Optional when using
+HIDAPI.
+
+Further information on the device protocol can be found at
+
+http://protocols.ascensia.com/Programming-Guide.aspx
+
+"""
+
+import datetime
+
+from glucometerutils import common
+from glucometerutils.support import contourusb
+
+def _extract_timestamp(parsed_record, prefix=''):
+    """Extract the timestamp from a parsed record.
+
+    This leverages the fact that all the reading records have the same base structure.
+    """
+    datetime_str = parsed_record['datetime']
+
+    return datetime.datetime(
+        int(datetime_str[0:4]), #year
+        int(datetime_str[4:6]), #month
+        int(datetime_str[6:8]), #day
+        int(datetime_str[8:10]), #hour
+        int(datetime_str[10:12]), #minute
+        0)
+
+
+class Device(contourusb.ContourHidDevice):
+    """Glucometer driver for FreeStyle Libre devices."""
+
+    USB_VENDOR_ID = 0x1a79  # type: int  # Bayer Health Care LLC Contour
+    USB_PRODUCT_ID = 0x6002  # type: int
+
+
+    def get_meter_info(self):
+        """Return the device information in structured form."""
+        self._get_info_record()
+        return common.MeterInfo(
+            'Contour USB',
+            serial_number=self._get_serial_number(),
+            version_info=(
+                'Meter versions: ' + self._get_version(),),
+            native_unit= self.get_glucose_unit())
+
+    def get_glucose_unit(self):  # pylint: disable=no-self-use
+        """Returns the glucose unit of the device."""
+        
+        if self._get_glucose_unit() == '0':
+            return common.Unit.MG_DL
+        else:
+            return common.Unit.MMOL_L
+        
+
+    def get_readings(self):
+        """
+        Get reading dump from download data mode(all readings stored)
+        This meter supports only blood samples
+        """
+        for parsed_record in self._get_multirecord():
+            yield common.GlucoseReading(
+                _extract_timestamp(parsed_record),
+                int(parsed_record['value']),
+                comment=parsed_record['markers'],
+                measure_method=common.MeasurementMethod.BLOOD_SAMPLE
+                )
+            
+