src/adafruit_blinka/microcontroller/generic_micropython/i2c.py

   1 # SPDX-FileCopyrightText: 2021 Melissa LeBlanc-Williams for Adafruit Industries
   2 #
   3 # SPDX-License-Identifier: MIT
   4 """I2C Class for Generic MicroPython"""
   5 from machine import I2C as _I2C
   6
   7
   8 class I2C:
   9     """I2C Class for Generic MicroPython"""
  10
  11
  12     MASTER = 0
  13
  14     # pylint: disable=unused-argument
  15     def __init__(self, portId, *, mode=MASTER, baudrate=100000):
  16         self._i2c = _I2C(portId, freq=baudrate)
  17
  18     def scan(self):
  19         """Perform an I2C Device Scan"""
  20         return self._i2c.scan()
  21
  22     def writeto(self, address, buffer, *, stop=True):
  23         """Write the data from the buffer to the address"""
  24         return self._i2c.writeto(address, buffer)
  25
  26     def readfrom_into(self, address, buffer, *, stop=True):
  27         """Read data from an address and into the buffer"""
  28         return self._i2c.readfrom_into(address, buffer)
  29
  30     def writeto_then_readfrom(
  31         self,
  32         address,
  33         buffer_out,
  34         buffer_in,
  35         *,
  36         out_start=0,
  37         out_end=None,
  38         in_start=0,
  39         in_end=None,
  40         stop=False,
  41     ):
  42         """Write data from buffer_out to an address and then
  43         read data from an address and into buffer_in
  44         """
  45         self._i2c.writeto_then_readfrom(
  46             address,
  47             buffer_out,
  48             buffer_in,
  49             out_start=out_start,
  50             out_end=out_end,
  51             in_start=in_start,
  52             in_end=in_end,
  53         )
  54
  55     # pylint: enable=unused-argument