def init(self, scl, sda, frequency):
self.deinit()
if detector.board.ftdi_ft232h:
from adafruit_blinka.microcontroller.ft232h.i2c import I2C
self._i2c = I2C(frequency=frequency)
return
elif detector.board.binho_nova:
from adafruit_blinka.microcontroller.nova.i2c import I2C
self._i2c = I2C(frequency=frequency)
return
elif detector.board.microchip_mcp2221:
from adafruit_blinka.microcontroller.mcp2221.i2c import I2C
self._i2c = I2C(frequency=frequency)
return
elif detector.board.any_embedded_linux:
from adafruit_blinka.microcontroller.generic_linux.i2c import I2C as _I2C
else:
from machine import I2C as _I2C
from microcontroller.pin import i2cPorts
for portId, portScl, portSda in i2cPorts:
try:
if scl == portScl and sda == portSda:
self._i2c = _I2C(portId,
mode=_I2C.MASTER,
baudrate=frequency)
break
except RuntimeError:
pass
else:
raise ValueError(
"No Hardware I2C on (scl,sda)={}\nValid I2C ports: {}".format(
(scl, sda), i2cPorts))
self._lock = threading.RLock()
def init(self, bus_id, frequency):
self.deinit()
# Check if the file /dev/i2c-{bus_id} exists and error if not
if not path.exists("/dev/i2c-{}".format(bus_id)):
raise ValueError("No device found for /dev/i2c-{}".format(bus_id))
# Attempt to open using _I2C
self._i2c = _I2C(bus_id, mode=_I2C.MASTER, baudrate=frequency)
self._lock = threading.RLock()
def init(self, scl, sda, frequency):
self.deinit()
if detector.board.any_embedded_linux:
from adafruit_blinka.microcontroller.generic_linux.i2c import I2C as _I2C
else:
from adafruit_blinka.microcontroller.generic_linux.i2c import I2C as _I2C
from microcontroller.pin import i2cPorts
for portId, portScl, portSda in i2cPorts:
if scl == portScl and sda == portSda:
self._i2c = _I2C(portId, mode=_I2C.MASTER, baudrate=frequency)
break
else:
raise NotImplementedError(
"No Hardware I2C on (scl,sda)={}\nValid UART ports: {}".format((scl, sda), i2cPorts)
)
def init(self, scl, sda, frequency):
self.deinit()
if board_id in ("raspi_3", "raspi_2", "beaglebone_black",
"orangepipc"):
from adafruit_blinka.microcontroller.generic_linux.i2c import I2C as _I2C
else:
from machine import I2C as _I2C
from microcontroller.pin import i2cPorts
for portId, portScl, portSda in i2cPorts:
if scl == portScl and sda == portSda:
self._i2c = _I2C(portId, mode=_I2C.MASTER, baudrate=frequency)
break
else:
raise NotImplementedError(
"No Hardware I2C on (scl,sda)={}\nValid UART ports".format(
(scl, sda), i2cPorts))
def init(self, port_id, sda, scl, frequency):
self.deinit()
self._i2c = _I2C(port_id, mode=_I2C.MASTER, baudrate=frequency)
if threading is not None:
self._lock = threading.RLock()
def rpi_i2c(port=1, frequency=400000):
i2c = busio.I2C(board.SCL, board.SDA)
for portId, portScl, portSda in i2cPorts:
if portScl == board.SCL and portSda == board.SDA and port == portId:
i2c._i2c = _I2C(portId, mode=_I2C.MASTER, baudrate=frequency)
return i2c
def init(self, scl, sda, frequency, bus=None):
from adafruit_blinka.microcontroller.generic_linux.i2c import I2C as _I2C
self._i2c = _I2C(bus, mode=_I2C.MASTER, baudrate=frequency)
