reading byte offset instead of bit count

src/asammdf/blocks/mdf_v4.py

@@ -6777,9 +6777,7 @@ def _get_array(
         dim = 1
         for d in shape:
             dim *= d
-
-        item_size = channel.bit_count // 8
-        size = item_size * dim
+        size = ca_block.byte_offset_base * dim
 
         if group.uses_ld:
             record_size = group.channel_group.samples_byte_nr

test/test_mdf4.py

@@ -125,6 +125,26 @@ def test_attachment_blocks_w_filename(self):
 
         mdf.close()
 
+    def test_channel_with_boolean_array(self):
+        timestamps = np.array([0.1, 0.2, 0.3, 0.4, 0.5], dtype=np.float32)
+
+        samples = [np.ones((5, 2), dtype=np.uint8)]
+        types = [("boolean_array_channel", "(2, )<u1")]
+        record = np.core.records.fromarrays(samples, dtype=np.dtype(types))
+        boolean_array_channel = Signal(
+            record,
+            timestamps=timestamps,
+            name="boolean_array_channel",
+        )
+
+        mdf4 = MDF(version="4.10")
+        mdf4.append(signals=[boolean_array_channel])
+        # set bit count to 1 to indicate that each uint8 value is a boolean flag in boolean_array_channel
+        mdf4.groups[0].channels[1].bit_count = 1
+        signal = mdf4.select([("boolean_array_channel", 0, 1)])[0]
+
+        self.assertTrue((record == signal.samples).all())
+
 
 if __name__ == "__main__":
     unittest.main()