# SPDX-FileCopyrightText: 2021 Melissa LeBlanc-Williams for Adafruit Industries # # SPDX-License-Identifier: MIT import time import hid import busio from adafruit_blinka.microcontroller.mcp2221.mcp2221 import mcp2221 as _mcp2221 from adafruit_blinka.microcontroller.mcp2221.mcp2221 import MCP2221 as _MCP2221 from adafruit_blinka.microcontroller.mcp2221.i2c import I2C as _MCP2221I2C MLXADDR = 0x33 ADDRID1 = 0x2407 class MCP2221(_MCP2221): # pylint: disable=too-few-public-methods def __init__(self, address): self._hid = hid.device() self._hid.open_path(address) print("Connected to " + str(address)) self._gp_config = [0x07] * 4 # "don't care" initial value for pin in range(4): self.gp_set_mode(pin, self.GP_GPIO) # set to GPIO mode self.gpio_set_direction(pin, 1) # set to INPUT class MCP2221I2C(_MCP2221I2C): # pylint: disable=too-few-public-methods def __init__(self, mcp2221, *, frequency=100000): self._mcp2221 = mcp2221 self._mcp2221.i2c_configure(frequency) class I2C(busio.I2C): # pylint: disable=too-few-public-methods def __init__(self, mcp2221_i2c): self._i2c = mcp2221_i2c addresses = [mcp["path"] for mcp in hid.enumerate(0x04D8, 0x00DD)] i2c_devices = [] i2c_devices.append(I2C(MCP2221I2C(_mcp2221))) for addr in addresses: try: i2c_device = I2C(MCP2221I2C(MCP2221(addr))) i2c_devices.append(i2c_device) except OSError: print("Device path: " + str(addr) + " is used") while True: for i2c in i2c_devices: addrbuf = bytearray(2) addrbuf[0] = ADDRID1 >> 8 addrbuf[1] = ADDRID1 & 0xFF inbuf = bytearray(6) i2c.writeto_then_readfrom(MLXADDR, addrbuf, inbuf) print("Device " + str(i2c_devices.index(i2c)) + ": ") print(inbuf) time.sleep(0.5)