Created
November 19, 2017 22:57
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USB Keyboard + Power Management for Raspberry Pi
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import time | |
import busio | |
from adafruit_ina219 import INA219 | |
from digitalio import DigitalInOut, Direction, Pull | |
import board | |
from board import * | |
from adafruit_hid.keyboard import Keyboard | |
from adafruit_hid.keycode import Keycode | |
from adafruit_hid.keyboard_layout_us import KeyboardLayoutUS | |
buttonpins = [A0, A1, A2, A3, A4, A5] | |
buttons = [] | |
buttonkeys = [Keycode.W, Keycode.Q, Keycode.ENTER, Keycode.A, Keycode.B, Keycode.RIGHT_SHIFT] | |
kbd = Keyboard() | |
layout = KeyboardLayoutUS(kbd) | |
for pin in buttonpins: | |
button = DigitalInOut(pin) | |
button.direction = Direction.INPUT | |
button.pull = Pull.UP | |
buttons.append(button) | |
print('Buttons initiated') | |
myI2C = busio.I2C(SCL, SDA) | |
ina219 = INA219(myI2C) | |
print("INA219 initiated") | |
time.sleep(5) | |
while True: | |
ctime = int(time.monotonic()) | |
if ctime % 200 == 0: | |
busvoltage = 0 | |
busvoltage = ina219.get_bus_voltage_V() | |
print(busvoltage) | |
for button in buttons: | |
s = button.value | |
if not button.value: | |
i = buttons.index(button) | |
k = buttonkeys[i] | |
if type(k) is str: | |
layout.write(k) | |
else: | |
if not s: | |
kbd.press(k) | |
time.sleep(0.07) | |
kbd.release_all() | |
time.sleep(0.01) |
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