added new arguments to docstrings

Author: Janis Ita

canopen/sdo/base.py

@@ -136,6 +136,8 @@ def open(self, mode="rb", encoding="ascii", buffering=1024, size=None,
             Size of data to that will be transmitted.
         :param bool block_transfer:
             If block transfer should be used.
+        :param bool request_crc_support:
+            If crc calculation should be requested when using block transfer
 
         :returns:
             A file like object.

canopen/sdo/client.py

@@ -185,7 +185,9 @@ def open(self, index, subindex=0, mode="rb", encoding="ascii",
             If block transfer should be used.
         :param bool force_segment:
             Force use of segmented download regardless of data size.
-
+        :param bool request_crc_support:
+            If crc calculation should be requested when using block transfer
+        
         :returns:
             A file like object.
         """
@@ -454,6 +456,8 @@ def __init__(self, sdo_client, index, subindex=0, request_crc_support=True):
             Object dictionary index to read from.
         :param int subindex:
             Object dictionary sub-index to read from.
+        :param bool request_crc_support:
+            If crc calculation should be requested when using block transfer            
         """
         self._done = False
         self.sdo_client = sdo_client
@@ -608,6 +612,8 @@ def __init__(self, sdo_client, index, subindex=0, size=None, request_crc_support
             Object dictionary sub-index to read from.
         :param int size:
             Size of data in number of bytes if known in advance.
+        :param bool request_crc_support:
+            If crc calculation should be requested when using block transfer            
         """
         self.sdo_client = sdo_client
         self.size = size