Add BlockReady callback function to ps5000a.py

Author: neil.hamilton

picosdk/ps5000a.py

@@ -706,20 +706,20 @@ class PS5000A_PWQ_CONDITIONS (Structure):
 
 ps5000a.StreamingReadyType.__doc__ = doc
 
-# TODO sort out how to make a callback for a C function in ctypes!
-# doc = """ void *ps5000aStreamingReady
-#     (
-#         int16_t   handle,
-#         int32_t   noOfSamples,
-#         uint32_t  startIndex,
-#         int16_t   overflow,
-#         uint32_t  triggerAt,
-#         int16_t   triggered,
-#         int16_t   autoStop,
-#         void     *pParameter
-#     ); """
-# ps5000a.make_symbol("_StreamingReady", "ps5000aStreamingReady", c_void_p,
-#                     [c_int16, c_int32, c_uint32, c_int16, c_uint32, c_int16, c_int16, c_void_p], doc)
+doc = """void *ps5000aBlockReady
+    (
+        int16_t    handle,
+        PICO_STATUS    status,
+        void    *pParameter
+    );
+    """
+    
+ps5000a.BlockReadyType = C_CALLBACK_FUNCTION_FACTORY(None,
+                                                     c_int16,
+                                                     c_int32,
+                                                     c_void_p)
+                                                     
+ps5000a.BlockReadyType.__doc__ = doc
 
 doc = """ PICO_STATUS ps5000aNoOfStreamingValues
     (