code: def swd_write(self, output, value, nbits):
          
          pDir = binpacker.pack(output, nbits)
          pIn = binpacker.pack(value, nbits)
          bitpos = self._dll.JLINK_SWD_StoreRaw(pDir, pIn, nbits)
          if bitpos < 0:
              raise errors.JLinkException(bitpos)
  
          return bitpos
docs: Writes bytes over SWD (Serial Wire Debug).
  
          Args:
            self (JLink): the ``JLink`` instance
            output (int): the output buffer offset to write to
            value (int): the value to write to the output buffer
            nbits (int): the number of bits needed to represent the ``output`` and
              ``value``
  
          Returns:
            The bit position of the response in the input buffer.