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Use debouncer to handle button analysis #3

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Merged
merged 5 commits into from
Jul 3, 2019
Merged

Use debouncer to handle button analysis #3

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5723369
Use debouncer to handle button analysis
dastels Jul 2, 2019
a5e8031
Restore original class and make debouncer version a subclass
dastels Jul 2, 2019
b63a241
Tweak superclass initialization
dastels Jul 2, 2019
3a72dd3
A couple tweaks
dastels Jul 2, 2019
ab67ed0
Enhance the class docstring
dastels Jul 2, 2019
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47 changes: 46 additions & 1 deletion adafruit_cursorcontrol/cursorcontrol_cursormanager.py
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,7 @@
from micropython import const
import analogio
from gamepadshift import GamePadShift
from adafruit_debouncer import Debouncer

# PyBadge
PYBADGE_BUTTON_LEFT = const(128)
Expand All @@ -43,7 +44,7 @@
JOY_X_CTR = 32767.5
JOY_Y_CTR = 32767.5

class CursorManager:
class CursorManager(object):
"""Simple interaction user interface interaction for Adafruit_CursorControl.

:param adafruit_cursorcontrol cursor: The cursor object we are using.
Expand Down Expand Up @@ -90,6 +91,7 @@ def _init_hardware(self):
digitalio.DigitalInOut(board.BUTTON_OUT),
digitalio.DigitalInOut(board.BUTTON_LATCH))


@property
def is_clicked(self):
"""Returns True if the cursor button was pressed
Expand Down Expand Up @@ -159,3 +161,46 @@ def _check_cursor_movement(self, pressed=None):
self._cursor.y -= self._cursor.speed
else:
raise AttributeError('Board must have a D-Pad or Joystick for use with CursorManager!')


class DebouncedCursorManager(CursorManager):
"""Simple interaction user interface interaction for Adafruit_CursorControl.
This subclass provide a debounced version on the A button and provides queries for when
the button is just pressed, and just released, as well it's current state. "Just" in this
context means "since the previous call to update."

:param adafruit_cursorcontrol cursor: The cursor object we are using.
"""
def __init__(self, cursor, debounce_interval=0.01):
CursorManager.__init__(self, cursor)
self._pressed = 0
self._debouncer = Debouncer(lambda: bool(self._pressed & self._pad_btns['btn_a']),
interval=debounce_interval)

@property
def is_clicked(self):
"""Returns True if the cursor button was pressed
during previous call to update()
"""
return self._debouncer.rose
pressed = is_clicked

@property
def released(self):
"""Returns True if the cursor button was released
during previous call to update()
"""
return self._debouncer.fell

@property
def held(self):
"""Returns True if the cursor button is currently being held
"""
return self._debouncer.value


def update(self):
"""Updates the cursor object."""
self._pressed = self._pad.get_pressed()
self._check_cursor_movement(self._pressed)
self._debouncer.update()