fixed length parsing ( '{0:{length}b}'.format(int(item[1], 16), length =...

fixed length parsing ( '{0:{length}b}'.format(int(item[1], 16), length = length) ) in _data_sub_parse in svf_interpreter.py

jtag_if/jtag_interface.py

@@ -141,6 +141,9 @@ class interface():  # can have multiple inheritance to hide methods.
             self._write_TMS_TDI(TMSvect, 'TMS', True)
             self._write_TMS_TDI(TDIvect, 'TDI', True)
             self._bus_cycle()
+            
+    def read_TDO(self):
+        pass
 
     def _bus_cycle(self):
         if self.tms_cycle and self.tdi_cycle:  # we will cycle the bus

svf_intepreter.py

@@ -148,9 +148,9 @@ class svfinterpreter():
         length = int(arg.pop(0))
         #[[TDI, 123], [TDO, 123]]
         if len(arg) != 0:
-            self._data_sub_parse(arg, None, mode, sig)
+            self._data_sub_parse(arg, None, mode, sig, length)
 
-    def _data_sub_parse(self, arg, sequence=None, mode='', sig=None):
+    def _data_sub_parse(self, arg, sequence=None, mode='', sig=None, length = 0):
      #       print("data_sub called in mode:",mode,"with arg, seq:",arg,",",sequence)
         # the alternatives for "sig" variable are self.bus.TDI
         if isinstance(arg, str):
@@ -167,7 +167,7 @@ class svfinterpreter():
         elif isinstance(arg, list):
             for item in arg:
                 # format into binary. svf format is hex
-                bsequence = '{0:b}'.format(int(item[1], 16))
+                bsequence = '{0:{length}b}'.format(int(item[1], 16), length = length)
                 self._data_sub_parse(item[0], bsequence, mode, sig)
 
     def dummy(self, arg=None):