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save previously detected pin state for buttons to avoid multiple fires

This commit is contained in:
ohsqueezy 2023-01-13 20:27:32 -05:00
parent b522a23db7
commit 7fb1131c2e
1 changed files with 26 additions and 9 deletions
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35
electric_sieve/ElectricSieve.py
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@ -60,6 +60,12 @@ class ElectricSieve(Game):
"int": ["gradient", "height", "x-step"], "int": ["gradient", "height", "x-step"],
"float": ["altitude-ratio", "spacing-factor", "velocity-ratio", "fade-speed"] "float": ["altitude-ratio", "spacing-factor", "velocity-ratio", "fade-speed"]
}}) }})
# Member dict for tracking pin state changes. Start at 1 because high means unpressed.
self.pin_states = {
self.PIN_BUTTON_LEFT: 1,
self.PIN_BUTTON_RIGHT: 1
}
# Rotate the display if requested on the command line or in the configuration # Rotate the display if requested on the command line or in the configuration
if self.check_command_line("-rotate"): if self.check_command_line("-rotate"):
@ -117,18 +123,29 @@ class ElectricSieve(Game):
def gpio_input(self, pin): def gpio_input(self, pin):
""" """
Translate GPIO input into PGFW commands, so Raspberry Pi wired controllers be used for input. The pin will be checked for a low Translate GPIO input into PGFW commands, so Raspberry Pi wired controllers be used for input.
signal, meaning the pin has been connected to ground, which is translated to a button press. If the low signal is not detected, it
is translated to a button release. Usually called as a callback by `GPIO.add_event_detect` but can be called directly. Compare the pin state to what is stored in memory. Only fire an event if there has been a change in state. A change
from high to low triggers a press event. A change from low to high triggers a press cancel event.
@param pin Raspberry Pi pin number as read by the RPi.GPIO library @param pin Raspberry Pi pin number as read by the RPi.GPIO library
""" """
cancel = not (GPIO.input(pin) == GPIO.LOW) if "--debug" in sys.argv:
if pin == ElectricSieve.PIN_BUTTON_LEFT: pin_name = "left" if pin == ElectricSieve.PIN_BUTTON_LEFT else "right"
self.input.post_command("left", cancel=cancel) left_pin_state = GPIO.input(ElectricSieve.PIN_BUTTON_LEFT)
elif pin == ElectricSieve.PIN_BUTTON_RIGHT: right_pin_state = GPIO.input(ElectricSieve.PIN_BUTTON_RIGHT)
self.input.post_command("right", cancel=cancel) print(f"Received {pin} ({pin_name}) input. Left state is {left_pin_state}. Right state is {right_pin_state}")
self.input.post_any_command(id=pin, cancel=cancel)
# If the saved state of the pin is the same, there hasn't been a real button press or release, so don't continue
if self.pin_states[pin] != GPIO.input(pin):
self.pin_states[pin] = GPIO.input(pin)
# A high signal means the button is released, and a low signal means it is pressed
cancel = not (GPIO.input(pin) == GPIO.LOW)
if pin == ElectricSieve.PIN_BUTTON_LEFT:
self.input.post_command("left", cancel=cancel)
elif pin == ElectricSieve.PIN_BUTTON_RIGHT:
self.input.post_command("right", cancel=cancel)
self.input.post_any_command(id=pin, cancel=cancel)
def orient(self, geometry): def orient(self, geometry):
""" """