fix: issue on address

Author: gpongelli

gpio_expander.py

@@ -62,9 +62,10 @@ def _get_registry_params(value, x):
     _reg_address_multiplier = 1
     _idx = x % 8
     _adder = 0
+    if x > 7:
+        _adder = 1
     if value > 8:
         _reg_address_multiplier = 2
-        _adder = 1
         # datasheet bit field's name has underscore in place of dot for 16 bit expander
         if x >= 8:
             _name = "1_"
@@ -86,10 +87,10 @@ def __new__(mcs, clsname, bases, dct, *args, **kwargs):  # pylint: disable=unuse
                 # call to get only interesting data
                 _, _width, _, _ = _get_registry_params(value, 1)
                 # entire registries
-                _result_dct['input_ports'] = ROBits(8 * _width, _INPUT_PORT, 0, register_width=_width)
-                _result_dct['output_ports'] = RWBits(8 * _width, _OUTPUT_PORT, 0, register_width=_width)
-                _result_dct['polarity_inversions'] = RWBits(8 * _width, _POLARITY_REGISTER, 0, register_width=_width)
-                _result_dct['configuration_ports'] = RWBits(8 * _width, _CONFIG_REGISTER, 0, register_width=_width)
+                _result_dct['input_ports'] = ROBits(8 * _width, _INPUT_PORT * _width, 0, register_width=_width)
+                _result_dct['output_ports'] = RWBits(8 * _width, _OUTPUT_PORT * _width, 0, register_width=_width)
+                _result_dct['polarity_inversions'] = RWBits(8 * _width, _POLARITY_REGISTER * _width, 0, register_width=_width)
+                _result_dct['configuration_ports'] = RWBits(8 * _width, _CONFIG_REGISTER * _width, 0, register_width=_width)
 
                 # create single bit registries
                 for x in range(value):