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@Corteil
Last active October 4, 2022 19:53
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Modified keybow.py file for KMK firmware
"""
KMK keyboard for Pimoroni Keybow.
WARNING: This doesn't currently function correctly on the Raspberry Pi Zero,
some of the keys are stuck in the 'pressed' position. There's either a bug in
the keypad implementation on the rpi0, or the pin numbers don't match the pins
in linux.
This is a 4x3 macro pad designed to fit the rpi's GPIO connector. Each key is
attached to a single GPIO and has an APA102 LED mounted underneath it.
The layout of the board is as follows (GPIO connector on the left):
R0 | D20 D6 D22
R1 | D17 D16 D12
R2 | D24 D27 D26
R0 | D13 D5 D23
------------------
C0 C1 C2
This board also functions with an adaptor (see
https://learn.adafruit.com/itsybitsy-keybow-mechanical-keypad/) to work with an
itsybitsy in place of the rpi, which uses an alternate pin mapping:
R0 | A2 A1 A0
R1 | A5 A4 A3
R2 | D10 D9 D7
R3 | D11 D12 D2
------------------
C0 C1 C2
This keyboard file should automatically select the correct mapping at runtime.
"""
import board
import adafruit_dotstar
import sys
from kmk.extensions.rgb import RGB, AnimationModes
from kmk.kmk_keyboard import KMKKeyboard
from kmk.scanners.keypad import KeysScanner
# fmt: off
def raspi_pins():
return [
board.D20, board.D16, board.D26,
board.D6, board.D12, board.D13,
board.D22, board.D24, board.D5,
board.D17, board.D27, board.D23,
]
def rp2040_pins():
return [
board.GP7, board.GP8, board.GP27,
board.GP9, board.GP26, board.GP10,
board.GP11, board.GP18, board.GP12,
board.GP16, board.GP17, board.GP14
]
def itsybitsy_pins():
return [
board.D11, board.D12, board.D2,
board.D10, board.D9, board.D7,
board.A5, board.A4, board.A3,
board.A2, board.A1, board.A0,
]
# fmt: on
def isPi():
return sys.platform == "BROADCOM"
def isRP2040():
return sys.platform == "RP2040"
if isPi():
_KEY_CFG = raspi_pins()
_LED_PINS = (board.SCK, board.MOSI)
elif isRP2040():
_KEY_CFG = rp2040_pins()
_LED_PINS = (board.GP2, board.GP3)
else:
_KEY_CFG = itsybitsy_pins()
_LED_PINS = (board.SCK, board.MOSI)
led_strip = adafruit_dotstar.DotStar(_LED_PINS[0], _LED_PINS[1], 12)
rgb_ext = RGB(
pixel_pin=0,
pixels=led_strip,
num_pixels=12,
animation_mode=AnimationModes.BREATHING_RAINBOW,
)
class Keybow(KMKKeyboard):
"""
Default keyboard config for the Keybow.
"""
extensions = [rgb_ext]
def __init__(self):
self.matrix = KeysScanner(_KEY_CFG)
@Corteil
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Corteil commented Sep 29, 2022

I used a @NeilRedRobotics Pico to Pi adapter.
I followed the setup guide and then I modified the http://keybow.py file in the https://github.com/KMKfw/kmk_firmware boards -> pimoroni -> keybow folder.

@Corteil
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Corteil commented Oct 2, 2022

Updated to conform to black standards

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