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/pymakr.conf

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# Adafruit PN532 NFC/RFID control library.
# Author: Tony DiCola
#
# The MIT License (MIT)
#
# Copyright (c) 2015-2018 Adafruit Industries
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
"""
``adafruit_pn532``
====================================================
This module will let you communicate with a PN532 RFID/NFC shield or breakout
using I2C, SPI or UART.
* Author(s): Original Raspberry Pi code by Tony DiCola, CircuitPython by ladyada
Implementation Notes
--------------------
**Hardware:**
* Adafruit `PN532 Breakout <https://www.adafruit.com/product/364>`_
* Adafruit `PN532 Shield <https://www.adafruit.com/product/789>`_
**Software and Dependencies:**
* Adafruit CircuitPython firmware for the supported boards:
https://github.com/adafruit/circuitpython/releases
* Adafruit's Bus Device library: https://github.com/adafruit/Adafruit_CircuitPython_BusDevice
"""
import time
from digitalio import Direction
from micropython import const
__version__ = "0.0.0-auto.0"
__repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_PN532.git"
# pylint: disable=bad-whitespace
_PREAMBLE = const(0x00)
_STARTCODE1 = const(0x00)
_STARTCODE2 = const(0xFF)
_POSTAMBLE = const(0x00)
_HOSTTOPN532 = const(0xD4)
_PN532TOHOST = const(0xD5)
# PN532 Commands
_COMMAND_DIAGNOSE = const(0x00)
_COMMAND_GETFIRMWAREVERSION = const(0x02)
_COMMAND_GETGENERALSTATUS = const(0x04)
_COMMAND_READREGISTER = const(0x06)
_COMMAND_WRITEREGISTER = const(0x08)
_COMMAND_READGPIO = const(0x0C)
_COMMAND_WRITEGPIO = const(0x0E)
_COMMAND_SETSERIALBAUDRATE = const(0x10)
_COMMAND_SETPARAMETERS = const(0x12)
_COMMAND_SAMCONFIGURATION = const(0x14)
_COMMAND_POWERDOWN = const(0x16)
_COMMAND_RFCONFIGURATION = const(0x32)
_COMMAND_RFREGULATIONTEST = const(0x58)
_COMMAND_INJUMPFORDEP = const(0x56)
_COMMAND_INJUMPFORPSL = const(0x46)
_COMMAND_INLISTPASSIVETARGET = const(0x4A)
_COMMAND_INATR = const(0x50)
_COMMAND_INPSL = const(0x4E)
_COMMAND_INDATAEXCHANGE = const(0x40)
_COMMAND_INCOMMUNICATETHRU = const(0x42)
_COMMAND_INDESELECT = const(0x44)
_COMMAND_INRELEASE = const(0x52)
_COMMAND_INSELECT = const(0x54)
_COMMAND_INAUTOPOLL = const(0x60)
_COMMAND_TGINITASTARGET = const(0x8C)
_COMMAND_TGSETGENERALBYTES = const(0x92)
_COMMAND_TGGETDATA = const(0x86)
_COMMAND_TGSETDATA = const(0x8E)
_COMMAND_TGSETMETADATA = const(0x94)
_COMMAND_TGGETINITIATORCOMMAND = const(0x88)
_COMMAND_TGRESPONSETOINITIATOR = const(0x90)
_COMMAND_TGGETTARGETSTATUS = const(0x8A)
_RESPONSE_INDATAEXCHANGE = const(0x41)
_RESPONSE_INLISTPASSIVETARGET = const(0x4B)
_WAKEUP = const(0x55)
_MIFARE_ISO14443A = const(0x00)
# Mifare Commands
MIFARE_CMD_AUTH_A = const(0x60)
MIFARE_CMD_AUTH_B = const(0x61)
MIFARE_CMD_READ = const(0x30)
MIFARE_CMD_WRITE = const(0xA0)
MIFARE_CMD_TRANSFER = const(0xB0)
MIFARE_CMD_DECREMENT = const(0xC0)
MIFARE_CMD_INCREMENT = const(0xC1)
MIFARE_CMD_STORE = const(0xC2)
MIFARE_ULTRALIGHT_CMD_WRITE = const(0xA2)
# Prefixes for NDEF Records (to identify record type)
NDEF_URIPREFIX_NONE = const(0x00)
NDEF_URIPREFIX_HTTP_WWWDOT = const(0x01)
NDEF_URIPREFIX_HTTPS_WWWDOT = const(0x02)
NDEF_URIPREFIX_HTTP = const(0x03)
NDEF_URIPREFIX_HTTPS = const(0x04)
NDEF_URIPREFIX_TEL = const(0x05)
NDEF_URIPREFIX_MAILTO = const(0x06)
NDEF_URIPREFIX_FTP_ANONAT = const(0x07)
NDEF_URIPREFIX_FTP_FTPDOT = const(0x08)
NDEF_URIPREFIX_FTPS = const(0x09)
NDEF_URIPREFIX_SFTP = const(0x0A)
NDEF_URIPREFIX_SMB = const(0x0B)
NDEF_URIPREFIX_NFS = const(0x0C)
NDEF_URIPREFIX_FTP = const(0x0D)
NDEF_URIPREFIX_DAV = const(0x0E)
NDEF_URIPREFIX_NEWS = const(0x0F)
NDEF_URIPREFIX_TELNET = const(0x10)
NDEF_URIPREFIX_IMAP = const(0x11)
NDEF_URIPREFIX_RTSP = const(0x12)
NDEF_URIPREFIX_URN = const(0x13)
NDEF_URIPREFIX_POP = const(0x14)
NDEF_URIPREFIX_SIP = const(0x15)
NDEF_URIPREFIX_SIPS = const(0x16)
NDEF_URIPREFIX_TFTP = const(0x17)
NDEF_URIPREFIX_BTSPP = const(0x18)
NDEF_URIPREFIX_BTL2CAP = const(0x19)
NDEF_URIPREFIX_BTGOEP = const(0x1A)
NDEF_URIPREFIX_TCPOBEX = const(0x1B)
NDEF_URIPREFIX_IRDAOBEX = const(0x1C)
NDEF_URIPREFIX_FILE = const(0x1D)
NDEF_URIPREFIX_URN_EPC_ID = const(0x1E)
NDEF_URIPREFIX_URN_EPC_TAG = const(0x1F)
NDEF_URIPREFIX_URN_EPC_PAT = const(0x20)
NDEF_URIPREFIX_URN_EPC_RAW = const(0x21)
NDEF_URIPREFIX_URN_EPC = const(0x22)
NDEF_URIPREFIX_URN_NFC = const(0x23)
_GPIO_VALIDATIONBIT = const(0x80)
_GPIO_P30 = const(0)
_GPIO_P31 = const(1)
_GPIO_P32 = const(2)
_GPIO_P33 = const(3)
_GPIO_P34 = const(4)
_GPIO_P35 = const(5)
_ACK = b'\x00\x00\xFF\x00\xFF\x00'
_FRAME_START = b'\x00\x00\xFF'
# pylint: enable=bad-whitespace
def _reset(pin):
"""Perform a hardware reset toggle"""
pin.direction = Direction.OUTPUT
pin.value = True
time.sleep(0.1)
pin.value = False
time.sleep(0.5)
pin.value = True
time.sleep(0.1)
class BusyError(Exception):
"""Base class for exceptions in this module."""
pass
class PN532:
"""PN532 driver base, must be extended for I2C/SPI/UART interfacing"""
def __init__(self, *, debug=False, reset=None):
"""Create an instance of the PN532 class
"""
self.debug = debug
if reset:
if debug:
print("Resetting")
_reset(reset)
try:
self._wakeup()
self.get_firmware_version() # first time often fails, try 2ce
return
except (BusyError, RuntimeError):
pass
self.get_firmware_version()
def _read_data(self, count):
# Read raw data from device, not including status bytes:
# Subclasses MUST implement this!
raise NotImplementedError
def _write_data(self, framebytes):
# Write raw bytestring data to device, not including status bytes:
# Subclasses MUST implement this!
raise NotImplementedError
def _wait_ready(self, timeout):
# Check if busy up to max length of 'timeout' seconds
# Subclasses MUST implement this!
raise NotImplementedError
def _wakeup(self):
# Send special command to wake up
raise NotImplementedError
def _write_frame(self, data):
"""Write a frame to the PN532 with the specified data bytearray."""
assert data is not None and 1 < len(
data) < 255, 'Data must be array of 1 to 255 bytes.'
# Build frame to send as:
# - Preamble (0x00)
# - Start code (0x00, 0xFF)
# - Command length (1 byte)
# - Command length checksum
# - Command bytes
# - Checksum
# - Postamble (0x00)
length = len(data)
frame = bytearray(length+8)
frame[0] = _PREAMBLE
frame[1] = _STARTCODE1
frame[2] = _STARTCODE2
checksum = sum(frame[0:3])
frame[3] = length & 0xFF
frame[4] = (~length + 1) & 0xFF
frame[5:-2] = data
checksum += sum(data)
frame[-2] = ~checksum & 0xFF
frame[-1] = _POSTAMBLE
# Send frame.
if self.debug:
print('Write frame: ', [hex(i) for i in frame])
self._write_data(bytes(frame))
def _read_frame(self, length):
"""Read a response frame from the PN532 of at most length bytes in size.
Returns the data inside the frame if found, otherwise raises an exception
if there is an error parsing the frame. Note that less than length bytes
might be returned!
"""
# Read frame with expected length of data.
response = self._read_data(length+8)
if self.debug:
print('Read frame:', [hex(i) for i in response])
# Swallow all the 0x00 values that preceed 0xFF.
offset = 0
while response[offset] == 0x00:
offset += 1
if offset >= len(response):
raise RuntimeError(
'Response frame preamble does not contain 0x00FF!')
if response[offset] != 0xFF:
raise RuntimeError(
'Response frame preamble does not contain 0x00FF!')
offset += 1
if offset >= len(response):
raise RuntimeError('Response contains no data!')
# Check length & length checksum match.
frame_len = response[offset]
if (frame_len + response[offset+1]) & 0xFF != 0:
raise RuntimeError(
'Response length checksum did not match length!')
# Check frame checksum value matches bytes.
checksum = sum(response[offset+2:offset+2+frame_len+1]) & 0xFF
if checksum != 0:
raise RuntimeError(
'Response checksum did not match expected value: ', checksum)
# Return frame data.
return response[offset+2:offset+2+frame_len]
def call_function(self, command, response_length=0, params=[], timeout=1): # pylint: disable=dangerous-default-value
"""Send specified command to the PN532 and expect up to response_length
bytes back in a response. Note that less than the expected bytes might
be returned! Params can optionally specify an array of bytes to send as
parameters to the function call. Will wait up to timeout seconds
for a response and return a bytearray of response bytes, or None if no
response is available within the timeout.
"""
# Build frame data with command and parameters.
data = bytearray(2+len(params))
data[0] = _HOSTTOPN532
data[1] = command & 0xFF
for i, val in enumerate(params):
data[2+i] = val
# Send frame and wait for response.
try:
self._write_frame(data)
except OSError:
self._wakeup()
if self.debug:
print("call_function OSError")
return None
if not self._wait_ready(timeout):
if self.debug:
print("call_function timeout 1")
return None
# Verify ACK response and wait to be ready for function response.
if not _ACK == self._read_data(len(_ACK)):
raise RuntimeError('Did not receive expected ACK from PN532!')
if self.debug:
print("call_function no ack")
if not self._wait_ready(timeout):
if self.debug:
print("call_function timeout 2")
return None
# Read response bytes.
response = self._read_frame(response_length+2)
# Check that response is for the called function.
if not (response[0] == _PN532TOHOST and response[1] == (command+1)):
raise RuntimeError('Received unexpected command response!')
# Return response data.
return response[2:]
def get_firmware_version(self):
"""Call PN532 GetFirmwareVersion function and return a tuple with the IC,
Ver, Rev, and Support values.
"""
if self.debug:
print("Get firmware version")
response = self.call_function(
_COMMAND_GETFIRMWAREVERSION, 4, timeout=0.5)
if response is None:
raise RuntimeError('Failed to detect the PN532')
if self.debug:
print("Get firmware version response:", tuple(response))
return tuple(response)
def SAM_configuration(self): # pylint: disable=invalid-name
"""Configure the PN532 to read MiFare cards."""
# Send SAM configuration command with configuration for:
# - 0x01, normal mode
# - 0x14, timeout 50ms * 20 = 1 second
# - 0x01, use IRQ pin
# Note that no other verification is necessary as call_function will
# check the command was executed as expected.
self.call_function(_COMMAND_SAMCONFIGURATION,
params=[0x01, 0x14, 0x01])
def read_passive_target(self, card_baud=_MIFARE_ISO14443A, timeout=1):
"""Wait for a MiFare card to be available and return its UID when found.
Will wait up to timeout seconds and return None if no card is found,
otherwise a bytearray with the UID of the found card is returned.
"""
# Send passive read command for 1 card. Expect at most a 7 byte UUID.
try:
response = self.call_function(_COMMAND_INLISTPASSIVETARGET,
params=[0x01, card_baud],
response_length=19,
timeout=timeout)
except BusyError:
return None # no card found!
# If no response is available return None to indicate no card is present.
if response is None:
return None
# Check only 1 card with up to a 7 byte UID is present.
if response[0] != 0x01:
raise RuntimeError('More than one card detected!')
if response[5] > 7:
raise RuntimeError('Found card with unexpectedly long UID!')
# Return UID of card.
return response[6:6+response[5]]
def mifare_classic_authenticate_block(self, uid, block_number, key_number, key): # pylint: disable=invalid-name
"""Authenticate specified block number for a MiFare classic card. Uid
should be a byte array with the UID of the card, block number should be
the block to authenticate, key number should be the key type (like
MIFARE_CMD_AUTH_A or MIFARE_CMD_AUTH_B), and key should be a byte array
with the key data. Returns True if the block was authenticated, or False
if not authenticated.
"""
# Build parameters for InDataExchange command to authenticate MiFare card.
uidlen = len(uid)
keylen = len(key)
params = bytearray(3+uidlen+keylen)
params[0] = 0x01 # Max card numbers
params[1] = key_number & 0xFF
params[2] = block_number & 0xFF
params[3:3+keylen] = key
params[3+keylen:] = uid
# Send InDataExchange request and verify response is 0x00.
response = self.call_function(_COMMAND_INDATAEXCHANGE,
params=params,
response_length=1)
return response[0] == 0x00
def mifare_classic_read_block(self, block_number):
"""Read a block of data from the card. Block number should be the block
to read. If the block is successfully read a bytearray of length 16 with
data starting at the specified block will be returned. If the block is
not read then None will be returned.
"""
# Send InDataExchange request to read block of MiFare data.
response = self.call_function(_COMMAND_INDATAEXCHANGE,
params=[0x01, MIFARE_CMD_READ,
block_number & 0xFF],
response_length=17)
# Check first response is 0x00 to show success.
if response[0] != 0x00:
return None
# Return first 4 bytes since 16 bytes are always returned.
return response[1:]
def mifare_classic_write_block(self, block_number, data):
"""Write a block of data to the card. Block number should be the block
to write and data should be a byte array of length 16 with the data to
write. If the data is successfully written then True is returned,
otherwise False is returned.
"""
assert data is not None and len(
data) == 16, 'Data must be an array of 16 bytes!'
# Build parameters for InDataExchange command to do MiFare classic write.
params = bytearray(19)
params[0] = 0x01 # Max card numbers
params[1] = MIFARE_CMD_WRITE
params[2] = block_number & 0xFF
params[3:] = data
# Send InDataExchange request.
response = self.call_function(_COMMAND_INDATAEXCHANGE,
params=params,
response_length=1)
return response[0] == 0x0
def ntag2xx_write_block(self, block_number, data):
"""Write a block of data to the card. Block number should be the block
to write and data should be a byte array of length 4 with the data to
write. If the data is successfully written then True is returned,
otherwise False is returned.
"""
assert data is not None and len(
data) == 4, 'Data must be an array of 4 bytes!'
# Build parameters for InDataExchange command to do NTAG203 classic write.
params = bytearray(3+len(data))
params[0] = 0x01 # Max card numbers
params[1] = MIFARE_ULTRALIGHT_CMD_WRITE
params[2] = block_number & 0xFF
params[3:] = data
# Send InDataExchange request.
response = self.call_function(_COMMAND_INDATAEXCHANGE,
params=params,
response_length=1)
return response[0] == 0x00
def ntag2xx_read_block(self, block_number):
"""Read a block of data from the card. Block number should be the block
to read. If the block is successfully read a bytearray of length 16 with
data starting at the specified block will be returned. If the block is
not read then None will be returned.
"""
return self.mifare_classic_read_block(block_number)[0:4] # only 4 bytes per page

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# SPDX-FileCopyrightText: Copyright (c) 2019 Brent Rubell for Adafruit Industries
#
# SPDX-License-Identifier: MIT
"""
`digitalio`
==============================
DigitalIO for ESP32 over SPI.
* Author(s): Brent Rubell, based on Adafruit_Blinka digitalio implementation
and bcm283x Pin implementation.
https://github.com/adafruit/Adafruit_Blinka/blob/master/src/adafruit_blinka/microcontroller/bcm283x/pin.py
https://github.com/adafruit/Adafruit_Blinka/blob/master/src/digitalio.py
"""
from micropython import const
class Pin:
"""
Implementation of CircuitPython API Pin Handling
for ESP32SPI.
:param int esp_pin: Valid ESP32 GPIO Pin, predefined in ESP32_GPIO_PINS.
:param ESP_SPIcontrol esp: The ESP object we are using.
NOTE: This class does not currently implement reading digital pins
or the use of internal pull-up resistors.
"""
# pylint: disable=invalid-name
IN = const(0x00)
OUT = const(0x01)
LOW = const(0x00)
HIGH = const(0x01)
_value = LOW
_mode = IN
pin_id = None
ESP32_GPIO_PINS = set(
[0, 1, 2, 4, 5, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 25, 26, 27, 32, 33]
)
def __init__(self, esp_pin, esp):
if esp_pin in self.ESP32_GPIO_PINS:
self.pin_id = esp_pin
else:
raise AttributeError("Pin %d is not a valid ESP32 GPIO Pin." % esp_pin)
self._esp = esp
def init(self, mode=IN):
"""Initalizes a pre-defined pin.
:param mode: Pin mode (IN, OUT, LOW, HIGH). Defaults to IN.
"""
if mode is not None:
if mode == self.IN:
self._mode = self.IN
self._esp.set_pin_mode(self.pin_id, 0)
elif mode == self.OUT:
self._mode = self.OUT
self._esp.set_pin_mode(self.pin_id, 1)
else:
raise RuntimeError("Invalid mode defined")
def value(self, val=None):
"""Sets ESP32 Pin GPIO output mode.
:param val: Pin output level (LOW, HIGH)
"""
if val is not None:
if val == self.LOW:
self._value = val
self._esp.set_digital_write(self.pin_id, 0)
elif val == self.HIGH:
self._value = val
self._esp.set_digital_write(self.pin_id, 1)
else:
raise RuntimeError("Invalid value for pin")
else:
raise NotImplementedError(
"digitalRead not currently implemented in esp32spi"
)
def __repr__(self):
return str(self.pin_id)
# pylint: disable = too-few-public-methods
class DriveMode:
"""DriveMode Enum."""
PUSH_PULL = None
OPEN_DRAIN = None
DriveMode.PUSH_PULL = DriveMode()
DriveMode.OPEN_DRAIN = DriveMode()
class Direction:
"""DriveMode Enum."""
INPUT = None
OUTPUT = None
Direction.INPUT = Direction()
Direction.OUTPUT = Direction()
class DigitalInOut:
"""Implementation of DigitalIO module for ESP32SPI.
:param ESP_SPIcontrol esp: The ESP object we are using.
:param int pin: Valid ESP32 GPIO Pin, predefined in ESP32_GPIO_PINS.
"""
_pin = None
# pylint: disable = attribute-defined-outside-init
def __init__(self, esp, pin):
self._esp = esp
self._pin = Pin(pin, self._esp)
self.direction = Direction.INPUT
def __enter__(self):
return self
def __exit__(self, exception_type, exception_value, traceback):
self.deinit()
def deinit(self):
"""De-initializes the pin object."""
self._pin = None
def switch_to_output(self, value=False, drive_mode=DriveMode.PUSH_PULL):
"""Set the drive mode and value and then switch to writing out digital values.
:param bool value: Default mode to set upon switching.
:param DriveMode drive_mode: Drive mode for the output.
"""
self._direction = Direction.OUTPUT
self._drive_mode = drive_mode
self.value = value
def switch_to_input(self, pull=None):
"""Sets the pull and then switch to read in digital values.
:param Pull pull: Pull configuration for the input.
"""
raise NotImplementedError(
"Digital reads are not currently supported in ESP32SPI."
)
@property
def direction(self):
"""Returns the pin's direction."""
return self.__direction
@direction.setter
def direction(self, pin_dir):
"""Sets the direction of the pin.
:param Direction dir: Pin direction (Direction.OUTPUT or Direction.INPUT)
"""
self.__direction = pin_dir
if pin_dir is Direction.OUTPUT:
self._pin.init(mode=Pin.OUT)
self.value = False
self.drive_mode = DriveMode.PUSH_PULL
elif pin_dir is Direction.INPUT:
self._pin.init(mode=Pin.IN)
else:
raise AttributeError("Not a Direction")
@property
def value(self):
"""Returns the digital logic level value of the pin."""
return self._pin.value() == 1
@value.setter
def value(self, val):
"""Sets the digital logic level of the pin.
:param type value: Pin logic level.
:param int value: Pin logic level. 1 is logic high, 0 is logic low.
:param bool value: Pin logic level. True is logic high, False is logic low.
"""
if self.direction is Direction.OUTPUT:
self._pin.value(1 if val else 0)
else:
raise AttributeError("Not an output")
@property
def drive_mode(self):
"""Returns pin drive mode."""
if self.direction is Direction.OUTPUT:
return self._drive_mode
raise AttributeError("Not an output")
@drive_mode.setter
def drive_mode(self, mode):
"""Sets the pin drive mode.
:param DriveMode mode: Defines the drive mode when outputting digital values.
Either PUSH_PULL or OPEN_DRAIN
"""
if mode is DriveMode.OPEN_DRAIN:
raise NotImplementedError(
"Drive mode %s not implemented in ESP32SPI." % mode
)
if mode is DriveMode.PUSH_PULL:
self._pin.init(mode=Pin.OUT)

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#!/bin/bash
for i in *.py; do
pyboard.py -f cp $i :;
done

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from micropython import const
from os import uname
from machine import SoftSPI, Pin
import uasyncio as asyncio
import aioble
import bluetooth
import random
import struct
import machine
import time
import gc
import sys
import pn532_i2c
# Based on example from: https://github.com/micropython/micropython-lib/blob/master/micropython/bluetooth/aioble/examples/temp_sensor.py
# Unfortunately, there is no license information for aioble anywhere to be found...
# Also based on https://github.com/somervda/nfc-tester which doesn't come with a license file either...
RFID_BASE = lambda x: "1408%s-1337-BABE-B00B-C0FFEEC0FFEE" % (((4 - len(str(x))) * "0") + str(x))
RFID_SERVICE_UUID = bluetooth.UUID(RFID_BASE(1))
RFID_CHAR_UUID = bluetooth.UUID(RFID_BASE(2))
_ADV_INTERVAL_MS = 250_000
rfid_service = aioble.Service(RFID_SERVICE_UUID)
rfid_characteristic = aioble.Characteristic(
rfid_service, RFID_CHAR_UUID, read=True, notify=True
)
aioble.register_services(rfid_service)
async def peripheral_task():
while True:
try:
async with await aioble.advertise(
_ADV_INTERVAL_MS,
name="RFIDTest",
services=[RFID_SERVICE_UUID],
) as connection:
print("Connection from", connection.device)
await connection.disconnected()
except BaseException as e:
print("Exception in peripheral_task:", e)
async def read_task(rdr):
# Start listening for a card
time.sleep_ms(1000)
print("Waiting for RFID/NFC card...")
while True:
try:
do_read(rdr)
except Exception as e:
print("Exception in read_task:", e)
await asyncio.sleep_ms(100)
def do_read(rdr):
gc.collect()
last_uid = None
while True:
time.sleep_ms(100)
try:
uid = rdr.read_passive_target(timeout=0.2)
if last_uid == uid:
continue
if uid is None:
print("No card found")
last_uid = None
continue
struid = "".join(['{:0>{w}}'.format(hex(i)[2:], w=2) for i in uid])
print("Found card with UID:", struid)
rfid_characteristic.write(uid)
last_uid = uid
except Exception as e:
print("Something failed:", e)
pass
async def main():
try:
i2c = machine.I2C(0, scl=machine.Pin(1), sda=machine.Pin(0))
devices = i2c.scan()
if len(devices) == 0:
print("No i2c device !")
return 1
else:
print('i2c devices found:', len(devices))
for device in devices:
print("Decimal address: ", device, " | Hex address: ", hex(device))
pn532 = pn532_i2c.PN532_I2C(i2c, debug=False)
ic, ver, rev, support = pn532.get_firmware_version()
print("Found PN532 with firmware version: {0}.{1}".format(ver, rev))
pn532.SAM_configuration()
time.sleep_ms(1000)
gc.collect()
await asyncio.gather(
peripheral_task(),
read_task(pn532)
)
except KeyboardInterrupt:
print("Interrupted")
except Exception as e:
print("Exception in main:", e)
return 1
asyncio.run(main())

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pn532_i2c.py Normal file
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@ -0,0 +1,143 @@
# Adafruit PN532 NFC/RFID control library.
# Author: Tony DiCola
#
# The MIT License (MIT)
#
# Copyright (c) 2015-2018 Adafruit Industries
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
"""
``adafruit_pn532.i2c``
====================================================
This module will let you communicate with a PN532 RFID/NFC shield or breakout
using I2C.
* Author(s): Original Raspberry Pi code by Tony DiCola, CircuitPython by ladyada,
refactor by Carter Nelson
"""
__version__ = "0.0.0-auto.0"
__repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_PN532.git"
import time
from machine import I2C, Pin
from digitalio import Direction
from micropython import const
from adafruit_pn532 import PN532, BusyError, _reset
# pylint: disable=bad-whitespace
_I2C_ADDRESS = const(0x24)
_NOT_BUSY = const(0x01)
class PN532_I2C(PN532):
"""Driver for the PN532 connected over I2C."""
def __init__(self, i2c, *, irq=None, reset=None, req=None, debug=False):
"""Create an instance of the PN532 class using I2C. Note that PN532
uses clock stretching. Optional IRQ pin (not used),
reset pin and debugging output.
"""
self.debug = debug
self._irq = irq
self._req = req
if reset:
# Changed this logic so it is not circuit python dependent (No use of direction)
# Do the reset at the I2c level
if self.debug:
print("reset")
reset_pin = Pin(reset, Pin.OUT)
reset_pin.value(1)
time.sleep(0.1)
reset_pin.value(0)
time.sleep(0.5)
reset_pin.value(1)
time.sleep(0.1)
# _reset(reset)
# self._i2c = I2C.SoftI2C(i2c, _I2C_ADDRESS)
self._i2c = i2c
# call super.__init__ without reset pin (To get around circuitpython pin specifics)
super().__init__(debug=debug)
def _wakeup(self): # pylint: disable=no-self-use
"""Send any special commands/data to wake up PN532"""
if self._req:
self._req.direction = Direction.OUTPUT
self._req.value = True
time.sleep(0.1)
self._req.value = False
time.sleep(0.1)
self._req.value = True
time.sleep(0.5)
def _wait_ready(self, timeout=1):
"""Poll PN532 if status byte is ready, up to `timeout` seconds"""
# Updated to use time_ns vs time.monotonic of circuitpython
status = bytearray(1)
timestamp = time.time_ns()/1000000000
if self.debug:
print("wait ready timestamp:", timestamp)
while ((time.time_ns()/1000000000) - timestamp) < timeout:
try:
# with self._i2c:
self._i2c.readfrom_into(_I2C_ADDRESS, status)
except OSError:
self._wakeup()
continue
if status == b'\x01':
return True # No longer busy
else:
time.sleep(0.05) # lets ask again soon!
# Timed out!
if self.debug:
print("wait_ready time.time_ns():", time.time_ns()/1000000000)
return False
def _read_data(self, count):
"""Read a specified count of bytes from the PN532."""
if self.debug:
print("_read_data")
# Build a read request frame.
frame = bytearray(count+1)
status_byte = bytearray(1)
# Updated to use readfrom_into (Circutpython readfrom not supported)
self._i2c.readfrom_into(_I2C_ADDRESS, status_byte)
if self.debug:
print("_read_data status_byte: ", status_byte)
if status_byte[0] != _NOT_BUSY: # not ready
if self.debug:
print("_read_data busy_error ")
raise BusyError
if self.debug:
print("_read_data readfrom_into")
# Updated to use readfrom_into (Circutpython readfrom not supported)
self._i2c.readfrom_into(_I2C_ADDRESS, frame)
if self.debug:
print("_read_data frame: ", frame)
return frame[1:] # don't return the status byte
def _write_data(self, framebytes):
"""Write a specified count of bytes to the PN532"""
# Updated to using writeto - circuitpython write not supported
if self.debug:
print('_write data: ', [hex(i) for i in framebytes])
self._i2c.writeto(_I2C_ADDRESS, framebytes)