src/adafruit_blinka/microcontroller/mcp2221/i2c.py

   1 """I2C Class for MCP2221"""
   2 from .mcp2221 import mcp2221
   3
   4
   5 class I2C:
   6     """Custom I2C Class for MCP2221"""
   7
   8     def __init__(self, *, frequency=100000):
   9         self._mcp2221 = mcp2221
  10         self._mcp2221._i2c_configure(frequency)
  11
  12     def scan(self):
  13         """Perform an I2C Device Scan"""
  14         return self._mcp2221.i2c_scan()
  15
  16     # pylint: disable=unused-argument
  17     def writeto(self, address, buffer, *, start=0, end=None, stop=True):
  18         """Write data from the buffer to an address"""
  19         self._mcp2221.i2c_writeto(address, buffer, start=start, end=end)
  20
  21     def readfrom_into(self, address, buffer, *, start=0, end=None, stop=True):
  22         """Read data from an address and into the buffer"""
  23         self._mcp2221.i2c_readfrom_into(address, buffer, start=start, end=end)
  24
  25     def writeto_then_readfrom(
  26         self,
  27         address,
  28         buffer_out,
  29         buffer_in,
  30         *,
  31         out_start=0,
  32         out_end=None,
  33         in_start=0,
  34         in_end=None,
  35         stop=False,
  36     ):
  37         """Write data from buffer_out to an address and then
  38         read data from an address and into buffer_in
  39         """
  40         self._mcp2221.i2c_writeto_then_readfrom(
  41             address,
  42             buffer_out,
  43             buffer_in,
  44             out_start=out_start,
  45             out_end=out_end,
  46             in_start=in_start,
  47             in_end=in_end,
  48         )
  49
  50     # pylint: enable=unused-argument