53 lines
1.5 KiB
Python
53 lines
1.5 KiB
Python
# SPDX-FileCopyrightText: 2021 Melissa LeBlanc-Williams for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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"""I2C Class for MCP2221"""
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from .mcp2221 import mcp2221
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class I2C:
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"""Custom I2C Class for MCP2221"""
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def __init__(self, *, frequency=100000):
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self._mcp2221 = mcp2221
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self._mcp2221._i2c_configure(frequency)
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def scan(self):
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"""Perform an I2C Device Scan"""
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return self._mcp2221.i2c_scan()
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# pylint: disable=unused-argument
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def writeto(self, address, buffer, *, start=0, end=None, stop=True):
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"""Write data from the buffer to an address"""
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self._mcp2221.i2c_writeto(address, buffer, start=start, end=end)
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def readfrom_into(self, address, buffer, *, start=0, end=None, stop=True):
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"""Read data from an address and into the buffer"""
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self._mcp2221.i2c_readfrom_into(address, buffer, start=start, end=end)
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def writeto_then_readfrom(
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self,
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address,
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buffer_out,
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buffer_in,
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*,
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out_start=0,
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out_end=None,
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in_start=0,
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in_end=None,
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stop=False,
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):
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"""Write data from buffer_out to an address and then
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read data from an address and into buffer_in
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"""
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self._mcp2221.i2c_writeto_then_readfrom(
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address,
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buffer_out,
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buffer_in,
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out_start=out_start,
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out_end=out_end,
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in_start=in_start,
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in_end=in_end,
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)
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# pylint: enable=unused-argument
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