class KeypadDisplay(object):
def __init__(self,
lcd_address,
button_pins=[17, 18, 27, 22, 23, 24, 25],
led_pins=[16, 20, 21]):
"""Initializes the KeypadDisplay object
button_pins: A list of 7 GPIO pins used for button inputs, order is A, B, L, U, D, R, C
pin Usage
---|-----------
17 | Button A
18 | Button B
27 | Button Left
22 | Button Up
23 | Button Down
24 | Button right
25 | Button C
led_pins: A list of 3 GPIO pins to use for led outputs, order is R, G, B
pin Usage
---|----------
16 | Red LED
20 | Yellow LED
21 | Green LED
"""
self.button_a = Button(button_pins[0])
self.button_b = Button(button_pins[1])
self.button_left = Button(button_pins[2])
self.button_up = Button(button_pins[3])
self.button_down = Button(button_pins[4])
self.button_right = Button(button_pins[5])
self.button_c = Button(button_pins[6])
self.led_red = LED(led_pins[0])
self.led_yellow = LED(led_pins[1])
self.led_green = LED(led_pins[2])
self.lcd = LCD(I2CPCF8574Interface(lcd_address),
num_rows=4,
num_cols=20)
def set_led(self, value) -> Leds:
"""Sets the LED's according to the passed value"""
self.led_red.off()
self.led_yellow.off()
self.led_green.off()
if value in [Leds.RED, Leds.ALL]:
self.led_red.on()
if value in [Leds.YELLOW, Leds.ALL]:
self.led_yellow.on()
if value in [Leds.GREEN, Leds.ALL]:
self.led_green.on()
def print(self, message):
"""Clears the LCD and display the message"""
self.lcd.clear()
self.lcd.print(message)
from lcd.lcd import CursorMode
import board
# Talk to the LCD at I2C address 0x27.
# The number of rows and columns defaults to 4x20, so those
# arguments could be omitted in this case.
lcd = LCD(I2CPCF8574Interface(0x27), num_rows=2, num_cols=16)
# 0x27 or 0x3F
button = DigitalInOut(board.D2)
button.direction = Direction.INPUT
button.pull = Pull.UP
button_state = None
last_state = None
value = 0
lcd.print(" CircuitPython LCD ")
time.sleep(2)
lcd.clear()
lcd.set_cursor_pos(0, 0)
lcd.print("ButtonPresses:")
# Make the cursor visible as a line.
lcd.set_cursor_mode(CursorMode.LINE)
while True:
if button.value:
print("not pressed")
else:
value = value + 1
print(value)
button_state = None
lcd.set_cursor_pos(1, 0)
lcd.print(str(value))
time.sleep(0.2)
# The number of rows and columns defaults to 4x20, so those
# arguments could be omitted in this case.
lcd = LCD(I2CPCF8574Interface(0x27), num_rows=2, num_cols=16)
# 0x27 or 0x3F
button = DigitalInOut(board.D2)
button.direction = Direction.INPUT
button.pull = Pull.UP
button_state = None
last_state = None
value = 0
lcd.print(" CircuitPython LCD ") # opening screen
time.sleep(2)
lcd.clear() # clears screen
lcd.set_cursor_pos(0, 0)
lcd.print("ButtonPresses:") # prints this
# Make the cursor visible as a line.
lcd.set_cursor_mode(CursorMode.LINE)
while True:
if button.value:
print("not pressed")
# prints that when button is not pressed
# for some reason the button value is backwards so I just made my code accomodate that
else:
value = value + 1 # when button is pressed add 1 to value
print(value) # prints the value in serial
button.pull = digitalio.Pull.UP
SwitchState = digitalio.DigitalInOut(board.D3)
SwitchState.direction = digitalio.Direction.INPUT
SwitchState.pull = digitalio.Pull.UP
lcd = LCD(I2CPCF8574Interface(0x27), num_rows=2, num_cols=16)
counter = 0
oldSwitchState = 0
newSwitchState = 1
adder = 1
while True:
lcd.clear() # clears LCD
lcd.set_cursor_pos(1, 0) # sets position of LCD text
lcd.print("pressed:")
lcd.set_cursor_pos(1, 9)
lcd.print(str(counter)) # prints the string number
if button.value:
print("0")
time.sleep(0.05)
oldSwitchState = 0
elif oldSwitchState == 0 and newSwitchState == 1:
if SwitchState.value: # When the switch is on this makes the counter go up
adder = 1
class ShortcutBox:
"""Convert switch presses to keyboard and mouse shortcuts."""
def __init__(self, filename="shortcuts.txt"):
self.display = LCD(I2CPCF8574Interface(0x27))
self.display.clear()
self.keyboard = Keyboard()
self.mouse = Mouse()
self.consumer_control = ConsumerControl()
self.display.print(
"Ready! Choose a\nshortcut and press\nthe do-it switch.")
self.switch_ins = tuple(
digitalio.DigitalInOut(pin) for pin in SWITCH_PINS)
for switch_in in self.switch_ins:
switch_in.switch_to_input(pull=digitalio.Pull.UP)
try:
# Shortcuts is a dict mapping a switch number to a list of Shortcuts.
self.shortcuts = Shortcut.read_shortcuts(filename)
except BadShortcut as ex:
self.fatal_error(*ex.args)
if not self.shortcuts:
self.fatal_error("No shortcuts defined!")
self.current_switch = None
# Keep track of the current shortcut for each switch. Start at the zero-th ones.
# Skip any switches with no shortcuts.
self.current_shortcut_index = {}
for switch in self.shortcuts:
self.current_shortcut_index[switch] = 0
def run(self):
"""Start shortcut processing. Run forever."""
while True:
for switch, switch_in in enumerate(self.switch_ins):
if not switch_in.value:
# If switch is pressed, it's pulled low. Debounce by waiting for bounce time.
time.sleep(BOUNCE_SECS)
if switch == DO_IT_SWITCH:
if self.current_switch:
self.execute(self.current_shortcut)
self.display.print(" *")
else:
self.display.clear()
self.display.print("No shortcut\nchosen yet.")
else:
if switch == self.current_switch:
# Advance to next shortcut if this not the first press on this switch.
self.next_shortcut(switch)
else:
# Change to a new switch. Don't advance that switch's shortcuts yet.
self.current_switch = switch
self.display_shortcut(self.current_shortcut, switch)
# Wait for switch to be released. Debounce on the way up, too.
while not switch_in.value:
pass
time.sleep(BOUNCE_SECS)
@property
def current_shortcut(self):
"""The last shortcut designated by a switch press, or None if we're on a switch with no shortcuts."""
switch = self.current_switch
if switch in self.shortcuts:
return self.shortcuts[switch][self.current_shortcut_index[switch]]
else:
return None
def execute(self, shortcut):
"""Execute the given shortcut, if it's not None."""
if shortcut:
shortcut.execute(self.keyboard, self.mouse, self.consumer_control)
def next_shortcut(self, switch):
"""Move on to the next shortcut for the given switch. Skip switches with no shortcuts."""
if switch in self.current_shortcut_index:
self.current_shortcut_index[switch] = (
(self.current_shortcut_index[switch] + 1) %
len(self.shortcuts[switch]))
def display_shortcut(self, shortcut, switch):
self.display.clear()
self.display.print(
str(switch), ' ',
shortcut.label if shortcut else "No shortcuts\non this switch!")
def fatal_error(self, *strings):
"""Display and error and hang until reset."""
self.display.clear()
self.display.print(' '.join(strings))
# Hang until user presses the reset button.
while True:
pass
