kopia lustrzana https://github.com/pimoroni/pimoroni-pico
63 wiersze
2.0 KiB
Python
63 wiersze
2.0 KiB
Python
from pimoroni_i2c import PimoroniI2C
|
|
from pimoroni import BREAKOUT_GARDEN_I2C_PINS # or PICO_EXPLORER_I2C_PINS or HEADER_I2C_PINS
|
|
from breakout_encoder_wheel import BreakoutEncoderWheel, NUM_BUTTONS
|
|
|
|
"""
|
|
How to read the buttons and rotary dial of the Encoder Wheel breakout, only when an interrupt occurs.
|
|
|
|
Press Ctrl+C to stop the program.
|
|
"""
|
|
|
|
# Constants
|
|
BUTTON_NAMES = ["Up", "Down", "Left", "Right", "Centre"]
|
|
|
|
# Create a new BreakoutEncoderWheel with a pin on the Pico specified as an interrupt
|
|
i2c = PimoroniI2C(**BREAKOUT_GARDEN_I2C_PINS)
|
|
wheel = BreakoutEncoderWheel(i2c, interrupt=3) # 3 for BG_BASE, 22 for EXPLORER_BASE, or 19 for some RP2040 boards
|
|
# If wiring the breakout via the qw/st connector, use the below line instead
|
|
# wheel = BreakoutEncoderWheel(i2c)
|
|
|
|
# Variables
|
|
last_pressed = [False] * NUM_BUTTONS
|
|
pressed = [False] * NUM_BUTTONS
|
|
position = 0
|
|
hue = 0.0
|
|
|
|
# Set the first LED
|
|
wheel.clear()
|
|
wheel.set_hsv(position, hue, 1.0, 1.0)
|
|
wheel.show()
|
|
|
|
# Clear any left over interrupt from previous code
|
|
wheel.clear_interrupt_flag()
|
|
|
|
# Loop forever
|
|
while True:
|
|
|
|
# Check if the interrupt has fired
|
|
if wheel.get_interrupt_flag():
|
|
wheel.clear_interrupt_flag()
|
|
|
|
# Read all of the encoder wheel's buttons
|
|
for b in range(NUM_BUTTONS):
|
|
pressed[b] = wheel.pressed(b)
|
|
if pressed[b] != last_pressed[b]:
|
|
print(BUTTON_NAMES[b], "Pressed" if pressed[b] else "Released")
|
|
last_pressed[b] = pressed[b]
|
|
|
|
# The interrupt may have come from several sources,
|
|
# so check if it was a position change
|
|
new_position = wheel.step()
|
|
if new_position != position:
|
|
# Record the new position (from 0 to 23)
|
|
position = new_position
|
|
print("Position = ", position)
|
|
|
|
# Record a colour hue from 0.0 to 1.0
|
|
hue = wheel.revolutions() % 1.0
|
|
|
|
# Set the LED at the new position to the new hue
|
|
wheel.clear()
|
|
wheel.set_hsv(position, hue, 1.0, 1.0)
|
|
wheel.show()
|