adebaumann/Micropython-IOT
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Coding style enforced

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This commit is contained in:
Adrian A. Baumann
2022-05-28 12:46:31 +02:00
parent 4a5c844510
commit 7620db8abb
8 changed files with 197 additions and 125 deletions
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24
aabiot/wiegand.py
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@@ -7,12 +7,13 @@ weigand.py - read card IDs from a wiegand card reader
from machine import Pin, Timer
import utime
CARD_MASK = 0b11111111111111110 # 16 ones
FACILITY_MASK = 0b1111111100000000000000000 # 8 ones
CARD_MASK = 0b11111111111111110 # 16 ones
FACILITY_MASK = 0b1111111100000000000000000 # 8 ones
# Max pulse interval: 2ms
# pulse width: 50us
class Wiegand:
def __init__(self, pin0, pin1, callback):
"""
@@ -35,8 +36,11 @@ class Wiegand:
self.timer.init(period=50, mode=Timer.PERIODIC, callback=self._cardcheck)
self.cards_read = 0
def _on_pin0(self, newstate): self._on_pin(0, newstate)
def _on_pin1(self, newstate): self._on_pin(1, newstate)
def _on_pin0(self, newstate):
self._on_pin(0, newstate)
def _on_pin1(self, newstate):
self._on_pin(1, newstate)
def _on_pin(self, is_one, newstate):
now = utime.ticks_ms()
@@ -46,22 +50,24 @@ class Wiegand:
self.last_bit_read = now
self.next_card <<= 1
if is_one: self.next_card |= 1
if is_one:
self.next_card |= 1
self._bits += 1
def get_card(self):
if self.last_card is None:
return None
return ( self.last_card & CARD_MASK ) >> 1
return (self.last_card & CARD_MASK) >> 1
def get_facility_code(self):
if self.last_card is None:
return None
# Specific to standard 26bit wiegand
return ( self.last_card & FACILITY_MASK ) >> 17
return (self.last_card & FACILITY_MASK) >> 17
def _cardcheck(self, t):
if self.last_bit_read is None: return
if self.last_bit_read is None:
return
now = utime.ticks_ms()
if now - self.last_bit_read > 50:
# too slow - new start!