+# SPDX-FileCopyrightText: 2021 Melissa LeBlanc-Williams for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
"""
`busio` - Bus protocol support like I2C and SPI
=================================================
* Author(s): cefn
"""
-
try:
import threading
except ImportError:
threading = None
+# pylint: disable=unused-import
import adafruit_platformdetect.constants.boards as ap_board
import adafruit_platformdetect.constants.chips as ap_chip
from adafruit_blinka import Enum, Lockable, agnostic
from adafruit_blinka.agnostic import board_id, detector
# pylint: disable=import-outside-toplevel,too-many-branches,too-many-statements
-# pylint: disable=too-many-arguments,too-many-function-args
+# pylint: disable=too-many-arguments,too-many-function-args,too-many-return-statements
class I2C(Lockable):
"""
Busio I2C Class for CircuitPython Compatibility. Used
for both MicroPython and Linux.
+
+ NOTE: Frequency has no effect on Linux systems. The argument is only there for compatibility.
"""
def __init__(self, scl, sda, frequency=100000):
self._i2c = _I2C(frequency=frequency)
return
+
+ if detector.board.OS_AGNOSTIC_BOARD:
+ from adafruit_blinka.microcontroller.generic_agnostic_board.i2c import (
+ I2C as _I2C,
+ )
+
+ self._i2c = _I2C(frequency=frequency)
+ return
+
if detector.board.greatfet_one:
from adafruit_blinka.microcontroller.nxp_lpc4330.i2c import I2C as _I2C
self._i2c = _I2C(frequency=frequency)
return
+ if detector.board.pico_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.i2c import I2C_Pico as _I2C
+
+ self._i2c = _I2C(scl, sda, frequency=frequency)
+ return
+ if detector.board.feather_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.i2c import (
+ I2C_Feather as _I2C,
+ )
+
+ self._i2c = _I2C(scl, sda, frequency=frequency)
+ return
+ if detector.board.feather_can_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.i2c import (
+ I2C_Feather_CAN as _I2C,
+ )
+
+ self._i2c = _I2C(scl, sda, frequency=frequency)
+ return
+ if detector.board.feather_epd_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.i2c import (
+ I2C_Feather_EPD as _I2C,
+ )
+
+ self._i2c = _I2C(scl, sda, frequency=frequency)
+ return
+ if detector.board.feather_rfm_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.i2c import (
+ I2C_Feather_RFM as _I2C,
+ )
+
+ self._i2c = _I2C(scl, sda, frequency=frequency)
+ return
+ if detector.board.qtpy_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.i2c import I2C_QTPY as _I2C
+
+ self._i2c = _I2C(scl, sda, frequency=frequency)
+ return
+ if detector.board.itsybitsy_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.i2c import (
+ I2C_ItsyBitsy as _I2C,
+ )
+
+ self._i2c = _I2C(scl, sda, frequency=frequency)
+ return
+ if detector.board.macropad_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.i2c import (
+ I2C_MacroPad as _I2C,
+ )
+
+ self._i2c = _I2C(scl, sda, frequency=frequency)
+ return
+ if detector.board.qt2040_trinkey_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.i2c import (
+ I2C_QT2040_Trinkey as _I2C,
+ )
+
+ self._i2c = _I2C(scl, sda, frequency=frequency)
+ return
+ if detector.board.kb2040_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.i2c import (
+ I2C_KB2040 as _I2C,
+ )
+
+ self._i2c = _I2C(scl, sda, frequency=frequency)
+ return
+ if detector.board.radxa_x4_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.i2c import (
+ I2C_Radxa_X4 as _I2C,
+ )
+
+ self._i2c = _I2C(scl, sda, frequency=frequency)
+ return
+ if detector.chip.id == ap_chip.RP2040:
+ from adafruit_blinka.microcontroller.rp2040.i2c import I2C as _I2C
+
+ self._i2c = _I2C(scl, sda, frequency=frequency)
+ return
+ if detector.board.any_siemens_iot2000:
+ from adafruit_blinka.microcontroller.am65xx.i2c import I2C as _I2C
+
+ self._i2c = _I2C(frequency=frequency)
+ return
+
if detector.board.any_embedded_linux:
from adafruit_blinka.microcontroller.generic_linux.i2c import I2C as _I2C
+
+ if frequency == 100000:
+ frequency = None # Set to None if default to avoid triggering warning
elif detector.board.ftdi_ft2232h:
from adafruit_blinka.microcontroller.ftdi_mpsse.mpsse.i2c import I2C as _I2C
+ elif detector.board.ftdi_ft4232h:
+ from adafruit_blinka.microcontroller.ftdi_mpsse.mpsse.i2c import I2C as _I2C
else:
- from machine import I2C as _I2C
+ from adafruit_blinka.microcontroller.generic_micropython.i2c import (
+ I2C as _I2C,
+ )
from microcontroller.pin import i2cPorts
for portId, portScl, portSda in i2cPorts:
try:
+ # pylint: disable=unexpected-keyword-arg
if scl == portScl and sda == portSda:
self._i2c = _I2C(portId, mode=_I2C.MASTER, baudrate=frequency)
break
+ # pylint: enable=unexpected-keyword-arg
except RuntimeError:
pass
else:
raise ValueError(
- "No Hardware I2C on (scl,sda)={}\nValid I2C ports: {}".format(
- (scl, sda), i2cPorts
- )
+ f"No Hardware I2C on (scl,sda)={(scl, sda)}\n"
+ f"Valid I2C ports: {i2cPorts}.\nMake sure I2C is enabled."
)
if threading is not None:
self._lock = threading.RLock()
if end is None:
end = len(buffer)
buffer = memoryview(buffer)[start:end]
- stop = True # remove for efficiency later
- return self._i2c.readfrom_into(address, buffer, stop=stop)
+ return self._i2c.readfrom_into(address, buffer, stop=True)
- def writeto(self, address, buffer, *, start=0, end=None, stop=True):
+ def writeto(self, address, buffer, *, start=0, end=None):
"""Write to a device at specified address from a buffer"""
if isinstance(buffer, str):
buffer = bytes([ord(x) for x in buffer])
if start != 0 or end is not None:
if end is None:
- return self._i2c.writeto(address, memoryview(buffer)[start:], stop=stop)
- return self._i2c.writeto(address, memoryview(buffer)[start:end], stop=stop)
- return self._i2c.writeto(address, buffer, stop=stop)
+ return self._i2c.writeto(address, memoryview(buffer)[start:], stop=True)
+ return self._i2c.writeto(address, memoryview(buffer)[start:end], stop=True)
+ return self._i2c.writeto(address, buffer, stop=True)
def writeto_then_readfrom(
self,
out_end=None,
in_start=0,
in_end=None,
- stop=False
+ stop=False,
):
""" "Write to a device at specified address from a buffer then read
from a device at specified address into a buffer
self.deinit()
if detector.board.ftdi_ft232h:
from adafruit_blinka.microcontroller.ftdi_mpsse.mpsse.spi import SPI as _SPI
- from adafruit_blinka.microcontroller.ftdi_mpsse.ft232h.pin import SCK, MOSI, MISO
+ from adafruit_blinka.microcontroller.ftdi_mpsse.ft232h.pin import (
+ SCK,
+ MOSI,
+ MISO,
+ )
self._spi = _SPI()
self._pins = (SCK, MOSI, MISO)
self._spi = _SPI()
self._pins = (SCK, MOSI, MISO)
return
+ if detector.board.pico_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.spi import SPI_Pico as _SPI
+
+ self._spi = _SPI(clock) # this is really all that's needed
+ self._pins = (clock, clock, clock) # will determine MOSI/MISO from clock
+ return
+ if detector.board.feather_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.spi import (
+ SPI_Feather as _SPI,
+ )
+
+ self._spi = _SPI(clock) # this is really all that's needed
+ self._pins = (clock, clock, clock) # will determine MOSI/MISO from clock
+ return
+ if detector.board.feather_can_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.spi import (
+ SPI_Feather_CAN as _SPI,
+ )
+
+ self._spi = _SPI(clock) # this is really all that's needed
+ self._pins = (clock, clock, clock) # will determine MOSI/MISO from clock
+ return
+ if detector.board.feather_epd_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.spi import (
+ SPI_Feather_EPD as _SPI,
+ )
+
+ self._spi = _SPI(clock) # this is really all that's needed
+ self._pins = (clock, clock, clock) # will determine MOSI/MISO from clock
+ return
+ if detector.board.feather_rfm_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.spi import (
+ SPI_Feather_RFM as _SPI,
+ )
+
+ self._spi = _SPI(clock) # this is really all that's needed
+ self._pins = (clock, clock, clock) # will determine MOSI/MISO from clock
+ return
+ if detector.board.itsybitsy_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.spi import (
+ SPI_ItsyBitsy as _SPI,
+ )
+
+ self._spi = _SPI(clock) # this is really all that's needed
+ self._pins = (clock, clock, clock) # will determine MOSI/MISO from clock
+ return
+ if detector.board.macropad_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.spi import (
+ SPI_MacroPad as _SPI,
+ )
+
+ self._spi = _SPI(clock) # this is really all that's needed
+ self._pins = (clock, clock, clock) # will determine MOSI/MISO from clock
+ return
+ if detector.board.qtpy_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.spi import SPI_QTPY as _SPI
+
+ self._spi = _SPI(clock) # this is really all that's needed
+ self._pins = (clock, clock, clock) # will determine MOSI/MISO from clock
+ return
+ if detector.board.kb2040_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.spi import (
+ SPI_KB2040 as _SPI,
+ )
+
+ self._spi = _SPI(clock) # this is really all that's needed
+ self._pins = (clock, clock, clock) # will determine MOSI/MISO from clock
+ return
+ if detector.board.radxa_x4_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.spi import (
+ SPI_Radxa_X4 as _SPI,
+ )
+
+ self._spi = _SPI(clock) # this is really all that's needed
+ self._pins = (clock, clock, clock) # will determine MOSI/MISO from clock
+ return
+ if detector.chip.id == ap_chip.RP2040:
+ from adafruit_blinka.microcontroller.rp2040.spi import SPI as _SPI
+
+ self._spi = _SPI(clock, MOSI, MISO) # Pins configured on instantiation
+ self._pins = (clock, clock, clock) # These don't matter, they're discarded
+ return
+ if detector.board.any_siemens_iot2000:
+ from adafruit_blinka.microcontroller.am65xx.spi import SPI as _SPI
+
+ self._spi = _SPI(clock) # this is really all that's needed
+ self._pins = (clock, clock, clock) # will determine MOSI/MISO from clock
+ return
if detector.board.any_embedded_linux:
from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
elif detector.board.ftdi_ft2232h:
from adafruit_blinka.microcontroller.ftdi_mpsse.mpsse.spi import SPI as _SPI
+ elif detector.board.ftdi_ft4232h:
+ from adafruit_blinka.microcontroller.ftdi_mpsse.mpsse.spi import SPI as _SPI
+ elif detector.board.OS_AGNOSTIC_BOARD:
+ from adafruit_blinka.microcontroller.generic_agnostic_board.spi import (
+ SPI as _SPI,
+ )
else:
- from machine import SPI as _SPI
+ from adafruit_blinka.microcontroller.generic_micropython.spi import (
+ SPI as _SPI,
+ )
from microcontroller.pin import spiPorts
for portId, portSck, portMosi, portMiso in spiPorts:
break
else:
raise ValueError(
- "No Hardware SPI on (SCLK, MOSI, MISO)={}\nValid SPI ports:{}".format(
- (clock, MOSI, MISO), spiPorts
- )
+ f"No Hardware SPI on (SCLK, MOSI, MISO)={(clock, MOSI, MISO)}\n"
+ f"Valid SPI ports: {spiPorts}.\nMake sure SPI is enabled."
)
def configure(self, baudrate=100000, polarity=0, phase=0, bits=8):
"""Update the configuration"""
- if detector.board.any_raspberry_pi or detector.board.any_raspberry_pi_40_pin:
- from adafruit_blinka.microcontroller.bcm283x.pin import Pin
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- elif detector.board.BEAGLEBONE_AI:
- from adafruit_blinka.microcontroller.dra74x.pin import Pin
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- elif detector.board.any_beaglebone:
- from adafruit_blinka.microcontroller.am335x.pin import Pin
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- elif detector.board.any_orange_pi:
- if detector.chip.id == ap_chip.SUN8I:
- from adafruit_blinka.microcontroller.allwinner.h3.pin import Pin
- elif detector.chip.id == ap_chip.H5:
- from adafruit_blinka.microcontroller.allwinner.h5.pin import Pin
- elif detector.chip.id == ap_chip.H616:
- from adafruit_blinka.microcontroller.allwinner.h616.pin import Pin
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- elif detector.board.any_nanopi and detector.chip.id == ap_chip.SUN8I:
- from adafruit_blinka.microcontroller.allwinner.h3.pin import Pin
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- elif board_id == ap_board.GIANT_BOARD:
- from adafruit_blinka.microcontroller.sama5.pin import Pin
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- elif board_id == ap_board.CORAL_EDGE_TPU_DEV:
- from adafruit_blinka.microcontroller.nxp_imx8m.pin import Pin
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- elif board_id == ap_board.CORAL_EDGE_TPU_DEV_MINI:
- from adafruit_blinka.microcontroller.mt8167.pin import Pin
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- elif board_id == ap_board.ODROID_C2:
- from adafruit_blinka.microcontroller.amlogic.s905.pin import Pin
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- elif board_id == ap_board.ODROID_C4:
- from adafruit_blinka.microcontroller.amlogic.s905x3.pin import Pin
+ if detector.board.any_nanopi and detector.chip.id == ap_chip.SUN8I:
from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- elif board_id == ap_board.ODROID_XU4:
- from adafruit_blinka.microcontroller.samsung.exynos5422.pin import Pin
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- elif board_id == ap_board.DRAGONBOARD_410C:
- from adafruit_blinka.microcontroller.snapdragon.apq8016.pin import Pin
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- elif board_id == ap_board.JETSON_NANO:
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- from adafruit_blinka.microcontroller.tegra.t210.pin import Pin
- elif board_id == ap_board.JETSON_TX1:
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- from adafruit_blinka.microcontroller.tegra.t210.pin import Pin
- elif board_id == ap_board.JETSON_TX2:
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- from adafruit_blinka.microcontroller.tegra.t186.pin import Pin
- elif board_id == ap_board.JETSON_XAVIER:
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- from adafruit_blinka.microcontroller.tegra.t194.pin import Pin
- elif board_id == ap_board.JETSON_NX:
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- from adafruit_blinka.microcontroller.tegra.t194.pin import Pin
- elif detector.board.ROCK_PI_S:
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- from adafruit_blinka.microcontroller.rockchip.rk3308.pin import Pin
- elif detector.board.ROCK_PI_4:
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- from adafruit_blinka.microcontroller.rockchip.rk3399.pin import Pin
- elif detector.board.SIFIVE_UNLEASHED:
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- from adafruit_blinka.microcontroller.hfu540.pin import Pin
elif detector.board.ftdi_ft232h:
- from adafruit_blinka.microcontroller.ftdi_mpsse.ft232h.spi import SPI as _SPI
- from adafruit_blinka.microcontroller.ftdi_mpsse.ft232h.pin import Pin
+ from adafruit_blinka.microcontroller.ftdi_mpsse.mpsse.spi import (
+ SPI as _SPI,
+ )
elif detector.board.ftdi_ft2232h:
- from adafruit_blinka.microcontroller.ftdi_mpsse.ft2232h.spi import SPI as _SPI
- from adafruit_blinka.microcontroller.ftdi_mpsse.ft2232h.pin import Pin
+ from adafruit_blinka.microcontroller.ftdi_mpsse.mpsse.spi import (
+ SPI as _SPI,
+ )
+ elif detector.board.ftdi_ft4232h:
+ from adafruit_blinka.microcontroller.ftdi_mpsse.mpsse.spi import (
+ SPI as _SPI,
+ )
elif detector.board.binho_nova:
from adafruit_blinka.microcontroller.nova.spi import SPI as _SPI
- from adafruit_blinka.microcontroller.nova.pin import Pin
elif detector.board.greatfet_one:
from adafruit_blinka.microcontroller.nxp_lpc4330.spi import SPI as _SPI
- from adafruit_blinka.microcontroller.nxp_lpc4330.pin import Pin
- elif board_id in (
- ap_board.PINE64,
- ap_board.PINEBOOK,
- ap_board.PINEPHONE,
- ap_board.SOPINE,
- ):
- from adafruit_blinka.microcontroller.allwinner.a64.pin import Pin
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- elif board_id == ap_board.CLOCKWORK_CPI3:
- from adafruit_blinka.microcontroller.allwinner.a33.pin import Pin
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
- elif board_id == ap_board.ONION_OMEGA2:
- from adafruit_blinka.microcontroller.mips24kec.pin import Pin
- from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
elif detector.board.any_lubancat and detector.chip.id == ap_chip.IMX6ULL:
- from adafruit_blinka.microcontroller.nxp_imx6ull.pin import Pin
from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
+ elif detector.board.pico_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.spi import SPI_Pico as _SPI
+ elif detector.board.feather_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.spi import (
+ SPI_Feather as _SPI,
+ )
+ elif detector.board.feather_can_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.spi import (
+ SPI_Feather_CAN as _SPI,
+ )
+ elif detector.board.feather_epd_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.spi import (
+ SPI_Feather_EPD as _SPI,
+ )
+ elif detector.board.feather_rfm_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.spi import (
+ SPI_Feather_RFM as _SPI,
+ )
+ elif detector.board.itsybitsy_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.spi import (
+ SPI_ItsyBitsy as _SPI,
+ )
+ elif detector.board.macropad_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.spi import (
+ SPI_MacroPad as _SPI,
+ )
+ elif detector.board.kb2040_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.spi import (
+ SPI_KB2040 as _SPI,
+ )
+ elif detector.board.qtpy_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.spi import SPI_QTPY as _SPI
+ elif detector.board.radxa_x4_u2if:
+ from adafruit_blinka.microcontroller.rp2040_u2if.spi import (
+ SPI_Radxa_X4 as _SPI,
+ )
+ elif detector.chip.id == ap_chip.RP2040:
+ from adafruit_blinka.microcontroller.rp2040.spi import SPI as _SPI
+ elif detector.board.any_siemens_iot2000:
+ from adafruit_blinka.microcontroller.am65xx.spi import SPI as _SPI
+ from adafruit_blinka.microcontroller.am65xx.pin import Pin
+ elif detector.board.any_embedded_linux:
+ from adafruit_blinka.microcontroller.generic_linux.spi import SPI as _SPI
+ elif detector.board.OS_AGNOSTIC_BOARD:
+ from adafruit_blinka.microcontroller.generic_agnostic_board.spi import (
+ SPI as _SPI,
+ )
else:
- from machine import SPI as _SPI
- from machine import Pin
+ from adafruit_blinka.microcontroller.generic_micropython.spi import (
+ SPI as _SPI,
+ )
if self._locked:
# TODO check if #init ignores MOSI=None rather than unsetting, to save _pinIds attribute
phase=phase,
bits=bits,
firstbit=_SPI.MSB,
- sck=Pin(self._pins[0].id),
- mosi=Pin(self._pins[1].id),
- miso=Pin(self._pins[2].id),
)
else:
raise RuntimeError("First call try_lock()")
"""Return the baud rate if implemented"""
try:
return self._spi.frequency
- except AttributeError:
+ except AttributeError as error:
raise NotImplementedError(
"Frequency attribute not implemented for this platform"
- ) from AttributeError
+ ) from error
def write(self, buf, start=0, end=None):
"""Write to the SPI device"""
from adafruit_blinka.microcontroller.nova.uart import UART as _UART
elif detector.board.greatfet_one:
from adafruit_blinka.microcontroller.nxp_lpc4330.uart import UART as _UART
+ elif detector.chip.id == ap_chip.RP2040:
+ from adafruit_blinka.microcontroller.rp2040.uart import UART as _UART
else:
from machine import UART as _UART
- if detector.board.binho_nova:
- from adafruit_blinka.microcontroller.nova.pin import uartPorts
- else:
- from microcontroller.pin import uartPorts
+ from microcontroller.pin import uartPorts
self.baudrate = baudrate
else:
raise ValueError("Invalid parity")
- # check tx and rx have hardware support
- for portId, portTx, portRx in uartPorts: #
- if portTx == tx and portRx == rx:
- self._uart = _UART(
- portId,
- baudrate,
- bits=bits,
- parity=parity,
- stop=stop,
- timeout=timeout,
- read_buf_len=receiver_buffer_size,
- )
- break
+ if detector.chip.id == ap_chip.RP2040:
+ self._uart = _UART(
+ tx,
+ rx,
+ baudrate=baudrate,
+ bits=bits,
+ parity=parity,
+ stop=stop,
+ )
else:
- raise ValueError(
- "No Hardware UART on (tx,rx)={}\nValid UART ports: {}".format(
- (tx, rx), uartPorts
+ # check tx and rx have hardware support
+ for portId, portTx, portRx in uartPorts: #
+ if portTx == tx and portRx == rx:
+ self._uart = _UART(
+ portId,
+ baudrate,
+ bits=bits,
+ parity=parity,
+ stop=stop,
+ timeout=timeout,
+ read_buf_len=receiver_buffer_size,
+ )
+ break
+ else:
+ raise ValueError(
+ "No Hardware UART on (tx,rx)={}\nValid UART ports: {}".format(
+ (tx, rx), uartPorts
+ )
)
- )
def deinit(self):
"""Deinitialization"""
return self._uart.readinto(buf, nbytes)
def readline(self):
- """Read a line of characters up to a newline charater from the UART"""
+ """Read a line of characters up to a newline character from the UART"""
return self._uart.readline()
def write(self, buf):
"""Write to the UART from a buffer"""
return self._uart.write(buf)
-
-
-class OneWire:
- """
- Stub class for OneWire, which is currently not implemented
- """
-
- def __init__(self, pin):
- raise NotImplementedError("OneWire has not been implemented")
-
- def deinit(self):
- """
- Deinitialize the OneWire bus and release any hardware resources for reuse.
- """
- raise NotImplementedError("OneWire has not been implemented")
-
- def reset(self):
- """
- Reset the OneWire bus and read presence
- """
- raise NotImplementedError("OneWire has not been implemented")
-
- def read_bit(self):
- """
- Read in a bit
- """
- raise NotImplementedError("OneWire has not been implemented")
-
- def write_bit(self, value):
- """
- Write out a bit based on value.
- """
- raise NotImplementedError("OneWire has not been implemented")
projects / Adafruit_Blinka-hackapet.git / blobdiff