pad4pi

An interrupt-based Python 2/3 library for reading matrix keypad key presses using Raspberry Pi GPIO pins.

pip install pad4pi

Tested on a Raspberry Pi B+ using a 4x3 matrix keypad but it should work with 4x4 and other sizes.

Usage

from pad4pi import rpi_gpio

KEYPAD = [
    [1, 2, 3],
    [4, 5, 6],
    [7, 8, 9],
    ["*", 0, "#"]
]

ROW_PINS = [4, 14, 15, 17] # BCM numbering
COL_PINS = [18, 27, 22] # BCM numbering

factory = rpi_gpio.KeypadFactory()

# Try factory.create_4_by_3_keypad
# and factory.create_4_by_4_keypad for reasonable defaults
keypad = factory.create_keypad(keypad=KEYPAD, row_pins=ROW_PINS, col_pins=COL_PINS)

def printKey(key):
    print(key)

# printKey will be called each time a keypad button is pressed
keypad.registerKeyPressHandler(printKey)

When your program exits, call keypad.cleanup() to ensure the Raspberry Pi’s GPIO pins are reset.

License

Licensed under GNU Lesser General Public License Version 3 (LGPL v3).

Metadata

Release files for pad4pi 1.1.5

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Source distribution (sdist)

Source distribution for pad4pi 1.1.5
File	Size	Uploaded	Provenance
pad4pi-1.1.5.tar.gz	3.4 kB	Aug 15, 2018	Without provenance	Details

Release files / pad4pi-1.1.5.tar.gz

Download URL	pad4pi-1.1.5.tar.gz
Size	3.4 kB
Tags	Source
SHA-256 checksum How to use checksums	`fa855896a1793d0005cf810ed5aa7aa639984cb83dc50cba51b4236b8badb764`
BLAKE2b-256 checksum How to use checksums	`43156ab0fe51324f52db2cb28ee739e59c7d1525c578d17df17005a50e3631cf`
Upload date	Aug 15, 2018
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/1.9.1 pkginfo/1.4.1 requests/2.18.4 setuptools/20.7.0 requests-toolbelt/0.8.0 tqdm/4.19.5 CPython/2.7.14`

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