1 # SPDX-FileCopyrightText: 2021 Melissa LeBlanc-Williams for Adafruit Industries
3 # SPDX-License-Identifier: MIT
4 """I2C Class for MCP2221"""
6 from .fake_mcp2221 import mcp2221
10 """Custom I2C Class for MCP2221"""
12 def __init__(self, *, frequency=100000):
13 self._mcp2221 = mcp2221
15 def scan(self, address_list=None):
17 If address_list is not provided, this function returns a list of 3 randomly generated I2C addresses from 0x0 to 0x79.
18 For a stimulus-driven test: If address_list is provided, this function returns the provided address_list.
20 if address_list == None:
21 # Generate a list of 3 randomly generated addresses from 0x0 to 0x79
24 address_list.append(random.randint(0x0, 0x79))
28 # pylint: disable=unused-argument
29 def writeto(self, address, buffer, *, start=0, end=None, stop=True):
30 """Write data from the buffer to an address"""
33 def readfrom_into(self, address, buffer, *, start=0, end=None, stop=True):
34 """Read data from an address and into the buffer"""
37 def writeto_then_readfrom(
49 """Write data from buffer_out to an address and then
50 read data from an address and into buffer_in
54 # pylint: enable=unused-argument