countio – Support for edge counting

The countio module contains logic to read and count edge transistions

Warning

This module is not available in some SAMD21 (aka M0) builds. See the Module Support Matrix - Which Modules Are Available on Which Boards for more info.

All classes change hardware state and should be deinitialized when they are no longer needed if the program continues after use. To do so, either call deinit() or use a context manager. See Lifetime and ContextManagers for more info.

Available on these boards
  • ARAMCON Badge 2019
  • ARAMCON2 Badge
  • ATMegaZero ESP32-S2
  • Adafruit CLUE nRF52840 Express
  • Adafruit Circuit Playground Bluefruit
  • Adafruit Circuit Playground Express 4-H
  • Adafruit CircuitPlayground Express
  • Adafruit EdgeBadge
  • Adafruit Feather Bluefruit Sense
  • Adafruit Feather M4 CAN
  • Adafruit Feather M4 Express
  • Adafruit Feather RP2040
  • Adafruit Feather nRF52840 Express
  • Adafruit FunHouse
  • Adafruit Grand Central M4 Express
  • Adafruit Hallowing M4 Express
  • Adafruit ItsyBitsy M4 Express
  • Adafruit ItsyBitsy RP2040
  • Adafruit ItsyBitsy nRF52840 Express
  • Adafruit LED Glasses Driver nRF52840
  • Adafruit Macropad RP2040
  • Adafruit MagTag
  • Adafruit Matrix Portal M4
  • Adafruit Metro ESP32S2
  • Adafruit Metro M4 Airlift Lite
  • Adafruit Metro M4 Express
  • Adafruit Metro nRF52840 Express
  • Adafruit Monster M4SK
  • Adafruit PyGamer
  • Adafruit PyPortal
  • Adafruit PyPortal Pynt
  • Adafruit PyPortal Titano
  • Adafruit Pybadge
  • Adafruit QT Py RP2040
  • Adafruit QT2040 Trinkey
  • Adafruit Trellis M4 Express
  • AloriumTech Evo M51
  • Arduino Nano 33 BLE
  • Arduino Nano RP2040 Connect
  • Artisense Reference Design RD00
  • AtelierDuMaker nRF52840 Breakout
  • BDMICRO VINA-D51
  • BLE-SS dev board Multi Sensor
  • BastBLE
  • BastWiFi
  • BlueMicro840
  • CP32-M4
  • Capable Robot Programmable USB Hub
  • Challenger RP2040 WiFi
  • Circuit Playground Express Digi-Key PyCon 2019
  • CircuitBrains Deluxe
  • CrumpS2
  • Cytron Maker Pi RP2040
  • DynOSSAT-EDU-OBC
  • ESP 12k NodeMCU
  • Electronut Labs Blip
  • Electronut Labs Papyr
  • EncoderPad RP2040
  • Feather ESP32S2 without PSRAM
  • FeatherS2
  • FeatherS2 Neo
  • FeatherS2 PreRelease
  • Franzininho WIFI w/Wroom
  • Franzininho WIFI w/Wrover
  • Gravitech Cucumber M
  • Gravitech Cucumber MS
  • Gravitech Cucumber R
  • Gravitech Cucumber RS
  • HMI-DevKit-1.1
  • HiiBot BlueFi
  • IkigaiSense Vita nRF52840
  • Kaluga 1
  • LILYGO TTGO T8 ESP32-S2 w/Display
  • MDBT50Q-DB-40
  • MDBT50Q-RX Dongle
  • MORPHEANS MorphESP-240
  • MakerDiary nRF52840 MDK
  • MakerDiary nRF52840 MDK USB Dongle
  • Makerdiary M60 Keyboard
  • Makerdiary Pitaya Go
  • Makerdiary nRF52840 M.2 Developer Kit
  • Melopero Shake RP2040
  • Mini SAM M4
  • Oak Dev Tech BREAD2040
  • Oak Dev Tech PixelWing ESP32S2
  • Open Hardware Summit 2020 Badge
  • PCA10056 nRF52840-DK
  • PCA10059 nRF52840 Dongle
  • Particle Argon
  • Particle Boron
  • Particle Xenon
  • Pimoroni Interstate 75
  • Pimoroni Keybow 2040
  • Pimoroni PGA2040
  • Pimoroni Pico LiPo (16MB)
  • Pimoroni Pico LiPo (4MB)
  • Pimoroni PicoSystem
  • Pimoroni Plasma 2040
  • Pimoroni Tiny 2040
  • PyCubedv04
  • PyCubedv04-MRAM
  • PyCubedv05
  • PyCubedv05-MRAM
  • PyKey60
  • Raspberry Pi Pico
  • Robo HAT MM1 M4
  • S2Mini
  • SAM E54 Xplained Pro
  • SAM32v26
  • Saola 1 w/Wroom
  • Saola 1 w/Wrover
  • Seeeduino Wio Terminal
  • Silicognition LLC M4-Shim
  • SparkFun MicroMod RP2040 Processor
  • SparkFun MicroMod SAMD51 Processor
  • SparkFun MicroMod nRF52840 Processor
  • SparkFun Pro Micro RP2040
  • SparkFun Pro nRF52840 Mini
  • SparkFun Thing Plus - RP2040
  • SparkFun Thing Plus - SAMD51
  • Sprite_v2b
  • TG-Boards' Datalore IP M4
  • TG-Watch
  • Targett Module Clip w/Wroom
  • Targett Module Clip w/Wrover
  • Teknikio Bluebird
  • The Open Book Feather
  • TinkeringTech ScoutMakes Azul
  • TinyS2
  • UARTLogger II
  • WarmBit BluePixel nRF52840
  • Winterbloom Sol
  • microS2
  • nanoESP32-S2 w/Wrover
  • nanoESP32-S2 w/Wroom
  • nice!nano

class countio.Counter(pin_a: microcontroller.Pin)

Counter will keep track of the number of falling edge transistions (pulses) on a given pin

Create a Counter object associated with the given pin. It tracks the number of falling pulses relative when the object is constructed.

Parameters

pin_a (Pin) – Pin to read pulses from.

For example:

import board
import countio

pin_counter = countio.Counter(board.D1)
#reset the count after 100 counts
while True:
    if pin_counter.count == 100:
        pin_counter.reset()
    print(pin_counter.count)
count :int

The current count in terms of pulses.

deinit(self)None

Deinitializes the Counter and releases any hardware resources for reuse.

__enter__(self)Counter

No-op used by Context Managers.

__exit__(self)None

Automatically deinitializes the hardware when exiting a context. See Lifetime and ContextManagers for more info.

reset(self)None

Resets the count back to 0.