def __init__(self, enButtons=True):
self._buttonA = None
self._buttonB = None
self._enbuttons = False
if enButtons:
self._enbuttons = True
self._buttonA = DigitalInOut(board.IO43)
self._buttonA.switch_to_input(pull=Pull.UP)
self._db_buttonA = Debouncer(self._buttonA, 0.01, True)
self._buttonB = DigitalInOut(board.IO44)
self._buttonB.switch_to_input(pull=Pull.UP)
self._db_buttonB = Debouncer(self._buttonB, 0.01, True)
# 3x Neopixels RGB pixels: IO0
self._pixels = neopixel.NeoPixel( board.IO0, 3, \
brightness=0.5, auto_write=False, pixel_order=neopixel.GRB )
self._colors = [(255, 0, 0), (0, 255, 0), (0, 0, 255)]
for i in range(3):
self._pixels[i] = self._colors[i]
self._pixels.show()
self._pixelsRotationDt = 0.2
self._pixelsRotationSt = time.monotonic()
# Sense color Sensor (颜色传感器): IO7
self._colorSensor = AnalogIn(board.IO7)
# Lighting Sensor (光强度传感器): IO8--leftLightSensor, IO9--rightLightSensor
self._leftLightSensor = AnalogIn(board.IO8)
self._rightLightSensor = AnalogIn(board.IO9)
# left and right head-LED: IO17--rightHeadLED, IO18--leftHeadLED
self._leftHeadLED = DigitalInOut(board.IO18)
self._leftHeadLED.direction = Direction.OUTPUT
self._leftHeadLED.value = 0
self._rightHeadLED = DigitalInOut(board.IO17)
self._rightHeadLED.direction = Direction.OUTPUT
self._rightHeadLED.value = 0
# Ultrasonic module (超声波模块): IO11--trig, IO10--echo
self._timeout = 0.1
self._trig = DigitalInOut(board.IO11)
self._trig.direction = Direction.OUTPUT
self._trig.value = 0
if _USE_PULSEIO:
self._echo = PulseIn(board.IO10)
self._echo.pause()
self._echo.clear()
else:
self._echo = DigitalInOut(board.IO10)
self._echo.direction = Direction.INPUT
# Tracking sensors (循迹传感器): IO4--rightTracker, IO3--rightTracker
self._leftTracker = DigitalInOut(board.IO4)
self._leftTracker.direction = Direction.INPUT
self._rightTracker = DigitalInOut(board.IO3)
self._rightTracker.direction = Direction.INPUT
# Motor (Right): IO41--rightMotor1IN, IO42--rightMotor2IN
self._rightMotor1IN = PWMOut(board.IO41, frequency=100, duty_cycle=0)
self._rightMotor2IN = PWMOut(board.IO42, frequency=100, duty_cycle=0)
# Motor (Left): IO12--leftMotor1IN, IO40--leftMotor2IN
self._leftMotor1IN = PWMOut(board.IO12, frequency=100, duty_cycle=0)
self._leftMotor2IN = PWMOut(board.IO40, frequency=100, duty_cycle=0)
def __init__(self):
super(DriveSystem, self).__init__()
self._motor_enable = DigitalInOut(board.A2)
self._motor_enable.direction = Direction.OUTPUT
self._motor_enable.value = False
self._right_motor = DCMotor(PWMOut(board.D12), PWMOut(board.D13))
self._left_motor = DCMotor(PWMOut(board.D4), PWMOut(board.D11))
self._base_speed = 0.5
class PWMOut(object):
"""PWM output."""
def __init__(self, pin, freq=5000, duty=0):
self._pID = pin
self._pin = PWMOut_(pin, frequency=int(freq), duty_cycle=duty)
def deinit(self):
self._pin.deinit()
@property
def duty_percent(self):
""" duty in percent
"""
return self._pin.duty_cycle /MAX_DUTY *100
@duty_percent.setter
def duty_percent(self, value):
self._pin.duty_cycle = int(min(max(0, value/100.0 *MAX_DUTY), MAX_DUTY))
@property
def duty(self):
""" duty as raw value
"""
return self._pin.duty_cycle
@duty.setter
def duty(self, value):
self._pin.duty_cycle = int(value)
@property
def freq_Hz(self):
""" frequency in [Hz]
"""
return self._pin.frequency
@freq_Hz.setter
def freq_Hz(self, value):
# Frequency cannot be changed unless variable frequency option is set,
# therefore here just recreate instance with same duty cycle but new
# frequency
d = self._pin.duty_cycle
self._pin.deinit()
self._pin = PWMOut_(self._pID, frequency=int(value), duty_cycle=d)
@property
def max_duty(self):
return MAX_DUTY
def freq_Hz(self, value): # Frequency cannot be changed unless variable frequency option is set, # therefore here just recreate instance with same duty cycle but new # frequency d = self._pin.duty_cycle self._pin.deinit() self._pin = PWMOut_(self._pID, frequency=int(value), duty_cycle=d)
def main(addon):
badge.show_bitmap('drivers/assets/speaker.bmp')
audio = PWMOut(board.GPIO1,
duty_cycle=0,
frequency=440,
variable_frequency=True)
led = digitalio.DigitalInOut(board.GPIO2)
led.switch_to_output(True)
try:
for (notename, eigths) in sequence:
length = eigths * 0.1
if notename:
led.value = False
audio.frequency = round(note(notename))
audio.duty_cycle = 0x8000
time.sleep(length)
led.value = True
audio.duty_cycle = 0
time.sleep(0.025)
time.sleep(3)
finally:
led.deinit()
audio.deinit()
def __init__(self, name, pwmpin, channelpin, directionpin=None, value=REMOTE_STOP_PULSE, frequency=60, duty_cycle=0):
self.name = name
self.pwm = PWMOut(pwmpin, frequency=frequency, duty_cycle=duty_cycle)
self.channel = PulseIn(channelpin, maxlen=64, idle_state=0)
# extra motor control things for PWM Motors
if directionpin not None:
self.direction = DigitalInOut(directionpin)
self.direction.direction = Direction.OUTPUT
self.direction.value = False
self.update_function = motor_duty_cycle
def __init__(self, red_pin, green_pin, blue_pin, invert_pwm=False):
self._rgb_led_pins = [red_pin, green_pin, blue_pin]
for i in range(len(self._rgb_led_pins)):
if hasattr(self._rgb_led_pins[i], "frequency"):
self._rgb_led_pins[i].duty_cycle = 0
elif str(type(self._rgb_led_pins[i])) == "<class 'Pin'>":
self._rgb_led_pins[i] = PWMOut(self._rgb_led_pins[i])
self._rgb_led_pins[i].duty_cycle = 0
else:
raise TypeError("Must provide a pin, PWMOut, or PWMChannel.")
self._invert_pwm = invert_pwm
self._current_color = (0, 0, 0)
self.color = self._current_color
class Display:
# pylint: disable=too-many-instance-attributes
"""This initializes a display and connects it into CircuitPython. Unlike other objects
in CircuitPython, Display objects live until ``displayio.release_displays()`` is called.
This is done so that CircuitPython can use the display itself.
Most people should not use this class directly. Use a specific display driver instead
that will contain the initialization sequence at minimum.
"""
def __init__(self,
display_bus,
init_sequence,
*,
width,
height,
colstart=0,
rowstart=0,
rotation=0,
color_depth=16,
grayscale=False,
pixels_in_byte_share_row=True,
bytes_per_cell=1,
reverse_pixels_in_byte=False,
set_column_command=0x2A,
set_row_command=0x2B,
write_ram_command=0x2C,
set_vertical_scroll=0,
backlight_pin=None,
brightness_command=None,
brightness=1.0,
auto_brightness=False,
single_byte_bounds=False,
data_as_commands=False,
auto_refresh=True,
native_frames_per_second=60):
# pylint: disable=unused-argument,too-many-locals
"""Create a Display object on the given display bus (`displayio.FourWire` or
`displayio.ParallelBus`).
The ``init_sequence`` is bitpacked to minimize the ram impact. Every command begins
with a command byte followed by a byte to determine the parameter count and if a
delay is need after. When the top bit of the second byte is 1, the next byte will be
the delay time in milliseconds. The remaining 7 bits are the parameter count
excluding any delay byte. The third through final bytes are the remaining command
parameters. The next byte will begin a new command definition. Here is a portion of
ILI9341 init code:
.. code-block:: python
init_sequence = (
b"\\xE1\\x0F\\x00\\x0E\\x14\\x03\\x11\\x07\\x31\
\\xC1\\x48\\x08\\x0F\\x0C\\x31\\x36\\x0F"
b"\\x11\\x80\\x78" # Exit Sleep then delay 0x78 (120ms)
b"\\x29\\x80\\x78" # Display on then delay 0x78 (120ms)
)
display = displayio.Display(display_bus, init_sequence, width=320, height=240)
The first command is 0xE1 with 15 (0x0F) parameters following. The second and third
are 0x11 and 0x29 respectively with delays (0x80) of 120ms (0x78) and no parameters.
Multiple byte literals (b”“) are merged together on load. The parens are needed to
allow byte literals on subsequent lines.
The initialization sequence should always leave the display memory access inline with
the scan of the display to minimize tearing artifacts.
"""
self._bus = display_bus
self._set_column_command = set_column_command
self._set_row_command = set_row_command
self._write_ram_command = write_ram_command
self._brightness_command = brightness_command
self._data_as_commands = data_as_commands
self._single_byte_bounds = single_byte_bounds
self._width = width
self._height = height
self._colstart = colstart
self._rowstart = rowstart
self._rotation = rotation
self._auto_brightness = auto_brightness
self._brightness = 1.0
self._auto_refresh = auto_refresh
self._initialize(init_sequence)
self._buffer = Image.new("RGB", (width, height))
self._subrectangles = []
self._bounds_encoding = ">BB" if single_byte_bounds else ">HH"
self._current_group = None
displays.append(self)
self._refresh_thread = None
if self._auto_refresh:
self.auto_refresh = True
self._colorconverter = ColorConverter()
self._backlight_type = None
if backlight_pin is not None:
try:
from pulseio import PWMOut # pylint: disable=import-outside-toplevel
# 100Hz looks decent and doesn't keep the CPU too busy
self._backlight = PWMOut(backlight_pin,
frequency=100,
duty_cycle=0)
self._backlight_type = BACKLIGHT_PWM
except ImportError:
# PWMOut not implemented on this platform
pass
if self._backlight_type is None:
self._backlight_type = BACKLIGHT_IN_OUT
self._backlight = digitalio.DigitalInOut(backlight_pin)
self._backlight.switch_to_output()
self.brightness = brightness
def _initialize(self, init_sequence):
i = 0
while i < len(init_sequence):
command = init_sequence[i]
data_size = init_sequence[i + 1]
delay = (data_size & 0x80) > 0
data_size &= ~0x80
self._write(command, init_sequence[i + 2:i + 2 + data_size])
delay_time_ms = 10
if delay:
data_size += 1
delay_time_ms = init_sequence[i + 1 + data_size]
if delay_time_ms == 255:
delay_time_ms = 500
time.sleep(delay_time_ms / 1000)
i += 2 + data_size
def _write(self, command, data):
self._bus.begin_transaction()
if self._data_as_commands:
if command is not None:
self._bus.send(True, bytes([command]), toggle_every_byte=True)
self._bus.send(command is not None, data)
else:
self._bus.send(True, bytes([command]), toggle_every_byte=True)
self._bus.send(False, data)
self._bus.end_transaction()
def _release(self):
self._bus._release() # pylint: disable=protected-access
self._bus = None
def show(self, group):
"""Switches to displaying the given group of layers. When group is None, the
default CircuitPython terminal will be shown.
"""
self._current_group = group
def refresh(self,
*,
target_frames_per_second=60,
minimum_frames_per_second=1):
# pylint: disable=unused-argument
"""When auto refresh is off, waits for the target frame rate and then refreshes the
display, returning True. If the call has taken too long since the last refresh call
for the given target frame rate, then the refresh returns False immediately without
updating the screen to hopefully help getting caught up.
If the time since the last successful refresh is below the minimum frame rate, then
an exception will be raised. Set minimum_frames_per_second to 0 to disable.
When auto refresh is on, updates the display immediately. (The display will also
update without calls to this.)
"""
self._subrectangles = []
# Go through groups and and add each to buffer
if self._current_group is not None:
buffer = Image.new("RGBA", (self._width, self._height))
# Recursively have everything draw to the image
self._current_group._fill_area(buffer) # pylint: disable=protected-access
# save image to buffer (or probably refresh buffer so we can compare)
self._buffer.paste(buffer)
if self._current_group is not None:
# Eventually calculate dirty rectangles here
self._subrectangles.append(
Rectangle(0, 0, self._width, self._height))
for area in self._subrectangles:
self._refresh_display_area(area)
def _refresh_loop(self):
while self._auto_refresh:
self.refresh()
def _refresh_display_area(self, rectangle):
"""Loop through dirty rectangles and redraw that area."""
img = self._buffer.convert("RGB").crop(rectangle)
img = img.rotate(self._rotation, expand=True)
display_rectangle = self._apply_rotation(rectangle)
img = img.crop(self._clip(display_rectangle))
data = numpy.array(img).astype("uint16")
color = (((data[:, :, 0] & 0xF8) << 8)
| ((data[:, :, 1] & 0xFC) << 3)
| (data[:, :, 2] >> 3))
pixels = bytes(
numpy.dstack(
((color >> 8) & 0xFF, color & 0xFF)).flatten().tolist())
self._write(
self._set_column_command,
self._encode_pos(
display_rectangle.x1 + self._colstart,
display_rectangle.x2 + self._colstart - 1,
),
)
self._write(
self._set_row_command,
self._encode_pos(
display_rectangle.y1 + self._rowstart,
display_rectangle.y2 + self._rowstart - 1,
),
)
if self._data_as_commands:
self._write(None, pixels)
else:
self._write(self._write_ram_command, pixels)
def _clip(self, rectangle):
if self._rotation in (90, 270):
width, height = self._height, self._width
else:
width, height = self._width, self._height
if rectangle.x1 < 0:
rectangle.x1 = 0
if rectangle.y1 < 0:
rectangle.y1 = 0
if rectangle.x2 > width:
rectangle.x2 = width
if rectangle.y2 > height:
rectangle.y2 = height
return rectangle
def _apply_rotation(self, rectangle):
"""Adjust the rectangle coordinates based on rotation"""
if self._rotation == 90:
return Rectangle(
self._height - rectangle.y2,
rectangle.x1,
self._height - rectangle.y1,
rectangle.x2,
)
if self._rotation == 180:
return Rectangle(
self._width - rectangle.x2,
self._height - rectangle.y2,
self._width - rectangle.x1,
self._height - rectangle.y1,
)
if self._rotation == 270:
return Rectangle(
rectangle.y1,
self._width - rectangle.x2,
rectangle.y2,
self._width - rectangle.x1,
)
return rectangle
def _encode_pos(self, x, y):
"""Encode a postion into bytes."""
return struct.pack(self._bounds_encoding, x, y)
def fill_row(self, y, buffer):
"""Extract the pixels from a single row"""
for x in range(0, self._width):
_rgb_565 = self._colorconverter.convert(
self._buffer.getpixel((x, y)))
buffer[x * 2] = (_rgb_565 >> 8) & 0xFF
buffer[x * 2 + 1] = _rgb_565 & 0xFF
return buffer
@property
def auto_refresh(self):
"""True when the display is refreshed automatically."""
return self._auto_refresh
@auto_refresh.setter
def auto_refresh(self, value):
self._auto_refresh = value
if self._refresh_thread is None:
self._refresh_thread = threading.Thread(target=self._refresh_loop,
daemon=True)
if value and not self._refresh_thread.is_alive():
# Start the thread
self._refresh_thread.start()
elif not value and self._refresh_thread.is_alive():
# Stop the thread
self._refresh_thread.join()
@property
def brightness(self):
"""The brightness of the display as a float. 0.0 is off and 1.0 is full `brightness`.
When `auto_brightness` is True, the value of `brightness` will change automatically.
If `brightness` is set, `auto_brightness` will be disabled and will be set to False.
"""
return self._brightness
@brightness.setter
def brightness(self, value):
if 0 <= float(value) <= 1.0:
self._brightness = value
if self._backlight_type == BACKLIGHT_IN_OUT:
self._backlight.value = round(self._brightness)
elif self._backlight_type == BACKLIGHT_PWM:
self._backlight.duty_cycle = self._brightness * 65535
elif self._brightness_command is not None:
self._write(self._brightness_command, round(value * 255))
else:
raise ValueError("Brightness must be between 0.0 and 1.0")
@property
def auto_brightness(self):
"""True when the display brightness is adjusted automatically, based on an ambient
light sensor or other method. Note that some displays may have this set to True by
default, but not actually implement automatic brightness adjustment.
`auto_brightness` is set to False if `brightness` is set manually.
"""
return self._auto_brightness
@auto_brightness.setter
def auto_brightness(self, value):
self._auto_brightness = value
@property
def width(self):
"""Display Width"""
return self._width
@property
def height(self):
"""Display Height"""
return self._height
@property
def rotation(self):
"""The rotation of the display as an int in degrees."""
return self._rotation
@rotation.setter
def rotation(self, value):
if value not in (0, 90, 180, 270):
raise ValueError("Rotation must be 0/90/180/270")
self._rotation = value
@property
def bus(self):
"""Current Display Bus"""
return self._bus
## set up on-board LED
led = DigitalInOut(board.LED)
led.direction = Direction.OUTPUT
## set up serial UART
# note UART(TX, RX, baudrate)
uart = busio.UART(board.PI_TX, board.PI_RX, baudrate=115200, timeout=0.001)
## set up servo/motor outputs
motor_direction = DigitalInOut(board.SERVO3)
motor_direction.direction = Direction.OUTPUT
motor_direction.value = False
throttle_pwm = PWMOut(board.SERVO4,
duty_cycle=motor_duty_cycle(1500),
frequency=500)
steering_pwm = PWMOut(board.SERVO2,
duty_cycle=servo_duty_cycle(1500),
frequency=60)
# setup radio control channels
throttle_channel = PulseIn(board.RCC3, maxlen=16, idle_state=0)
steering_channel = PulseIn(board.RCC4, maxlen=16, idle_state=0)
steering = Control("Steering", steering_pwm, steering_channel, 1500,
servo_duty_cycle)
throttle = Control("Throttle", throttle_pwm, throttle_channel, 1500,
motor_duty_cycle)
## Set some other variables
"""
FILE: main.py
DESC: Motor controller obeys commands from sensors
"""
import board
import busio
from motor import DCMotor
from time import sleep
from pulseio import PWMOut
uart = busio.UART(None, board.RX, baudrate=9600)
left = PWMOut(board.D2)
right = PWMOut(board.D0)
left.duty_cycle = 30000 # int(0xffff * abs(0.5))
def stop():
print("Stopping!")
try:
left.duty_cycle = 0
right.duty_cycle = 0
except Exception as e:
print("Exception in stop(): " + e.args[0])
pass
while True:
data = uart.read(1)
import board
from pulseio import PWMOut
from digitalio import DigitalInOut, Direction, Pull
from adafruit_ble.uart import UARTServer
from adafruit_bluefruit_connect.packet import Packet
from adafruit_bluefruit_connect.color_packet import ColorPacket
r = PWMOut(board.RGB_LED_RED, duty_cycle=0)
g = PWMOut(board.RGB_LED_GREEN, duty_cycle=0)
b = PWMOut(board.RGB_LED_BLUE, duty_cycle=0)
uart_server = UARTServer()
while True:
uart_server.start_advertising()
while not uart_server.connected:
pass
while uart_server.connected:
packet = Packet.from_stream(uart_server)
if isinstance(packet, ColorPacket):
print(packet.color)
dc = [-257 * c + 65535 for c in packet.color]
r.duty_cycle, g.duty_cycle, b.duty_cycle = dc
import time
import board
from pulseio import PWMOut
FADE_SPEED = 0.1 # Smaller number = faster
FADE_INCREMENT = 4000 # How much to adjust the brightness per cycle
PWM_FULL = 65535
# Setup LED
led = PWMOut(board.LED1, frequency=5000, duty_cycle=0)
# Fade infinitely
direction = 1
brightness = 0
while True:
brightness += FADE_INCREMENT * direction
# Switch directions when we get to the limits
if direction < 0 and brightness <= 0:
brightness = 0
direction = 1
elif direction > 0 and brightness >= PWM_FULL:
brightness = PWM_FULL
direction = -1
# Set PWM value
led.duty_cycle = brightness
time.sleep(FADE_SPEED)
def __init__(self, pin, wait):
self._servo = servo.Servo(PWMOut(pin, duty_cycle=2 ** 15, frequency=5))
self.wait = wait
self.servo = servo
self.channel = channel
self.value = value
self.servo.duty_cycle = servo_duty_cycle(value)
# set up on-board LED
led = DigitalInOut(board.LED)
led.direction = Direction.OUTPUT
# set up serial UART to Raspberry Pi
# note UART(TX, RX, baudrate)
uart = busio.UART(board.TX1, board.RX1, baudrate=115200, timeout=0.001)
# set up servos
steering_pwm = PWMOut(board.SERVO2, duty_cycle=2 ** 15, frequency=60)
throttle_pwm = PWMOut(board.SERVO1, duty_cycle=2 ** 15, frequency=60)
# set up RC channels. NOTE: input channels are RCC3 & RCC4 (not RCC1 & RCC2)
steering_channel = PulseIn(board.RCC4, maxlen=64, idle_state=0)
throttle_channel = PulseIn(board.RCC3, maxlen=64, idle_state=0)
# setup Control objects. 1500 pulse is off and center steering
steering = Control("Steering", steering_pwm, steering_channel, 1500)
throttle = Control("Throttle", throttle_pwm, throttle_channel, 1500)
# Hardware Notification: starting
logger.info("preparing to start...")
for i in range(0, 2):
led.value = True
time.sleep(0.5)
print("[INFO] END - I2C Test")
### SERVO Test
print("[INFO] START - SERVO Test")
print("Initialising all servo Pins. There could be errors at this stage relating to timers. Swap pins to remove errors and note in documentation.")
pins = [board.SERVO1, board.SERVO2, board.SERVO3, board.SERVO4,
board.SERVO5, board.SERVO6, board.SERVO7, board.SERVO8]
servos = []
# set up servos
for pin in pins:
print("[LOOP] Initialising...{0}".format(pin))
pwm = PWMOut(pin, duty_cycle=2 ** 15, frequency=50)
servos.append(servo.Servo(pwm))
print("[INFO] Finished setting up all servo pins, without issue.")
print("Now we will test each servo pin. Attach a servo to SERVO1 for the first test. As prompted each time, move the servo to the next pin for each test.")
print("The servo will sweep all the way to one end, and then back. At which time, the test will be over and you must move the servo to the next pin.")
print("Testing will begin in 5 seconds.")
sleep(6)
for servo in servos:
for angle in range(0, 180, 5): # 0 - 180 degrees, 5 degrees at a time.
servo.angle = angle
sleep(0.05)
for angle in range(180, 0, -5): # 180 - 0 degrees, 5 degrees at a time.
import board
import time
import neopixel
from digitalio import DigitalInOut, Direction, Pull
from analogio import AnalogIn
from pulseio import PWMOut
import audioio
import touchio
import simpleio
import random
# One pixel connected internally!
dot = neopixel.NeoPixel(board.NEOPIXEL, 1, brightness=0.08)
# pizeo buzzer
buzzer = PWMOut(board.D5, variable_frequency=True)
buzzer.frequency = 262
OFF = 0
ON = 2**15
# Digital input with pullup on D2, D3, D4, D5, D6
buttons = []
for p in [board.D6, board.D9, board.D10, board.A3, board.A4]:
button = DigitalInOut(p)
button.direction = Direction.INPUT
button.pull = Pull.UP
buttons.append(button)
# Digital output on D8, D9, D10, D11, D12
buttonLeds = []
for p in [board.D11, board.D12, board.D13, board.A1, board.A2]:
##INIT
#INIT LIBRARIES
import board
from digitalio import DigitalInOut, Direction, Pull
from busio import I2C
from pulseio import PWMOut
from adafruit_pcf8523 import PCF8523
from time import sleep, struct_time
from math import sin, cos, pi, floor, asin, acos, sqrt
print("SCRIPT START")
#INIT MOTOR CONTROL PINS ON BOARD
PWM_pin = PWMOut(board.D3, frequency=5000, duty_cycle=0)
FW_pin = DigitalInOut(board.D1)
FW_pin.direction = Direction.OUTPUT
RV_pin = DigitalInOut(board.D4)
RV_pin.direction = Direction.OUTPUT
##INIT I2C CONNECTION ON RTC AND GET CURRENT DATE
i2c = I2C(board.SCL, board.SDA, frequency=400000)
rtc = PCF8523(i2c)
if 'i2c' in locals() and 'rtc' in locals():
now = rtc.datetime
print(now)
else:
quit()
#INIT VARIABLES
#time calculation variables
longitude = 4.00000 #West - precise your location
def __init__(self, r, g, b):
self.r = PWMOut(r, frequency=5000, duty_cycle=0)
self.g = PWMOut(g, frequency=5000, duty_cycle=0)
self.b = PWMOut(b, frequency=5000, duty_cycle=0)
import time
import neopixel
from digitalio import DigitalInOut, Direction, Pull
from analogio import AnalogIn
from pulseio import PWMOut
import audioio
import touchio
import simpleio
import random
# One pixel connected internally!
dot = neopixel.NeoPixel(board.NEOPIXEL, 1, brightness=0.08)
# pizeo buzzer
buzzer = PWMOut(board.D5, variable_frequency=True)
buzzer.frequency = 262
OFF = 0
ON = 2**15
# Digital input with pullup on D2, D3, D4, D5, D6
buttons = []
for p in [board.D6, board.D9, board.D10, board.A3, board.A4]:
button = DigitalInOut(p)
button.direction = Direction.INPUT
button.pull = Pull.UP
buttons.append(button)
# Digital output on D8, D9, D10, D11, D12
buttonLeds = []
def __init__(self,
display_bus,
init_sequence,
*,
width,
height,
colstart=0,
rowstart=0,
rotation=0,
color_depth=16,
grayscale=False,
pixels_in_byte_share_row=True,
bytes_per_cell=1,
reverse_pixels_in_byte=False,
set_column_command=0x2A,
set_row_command=0x2B,
write_ram_command=0x2C,
set_vertical_scroll=0,
backlight_pin=None,
brightness_command=None,
brightness=1.0,
auto_brightness=False,
single_byte_bounds=False,
data_as_commands=False,
auto_refresh=True,
native_frames_per_second=60):
# pylint: disable=unused-argument,too-many-locals
"""Create a Display object on the given display bus (`displayio.FourWire` or
`displayio.ParallelBus`).
The ``init_sequence`` is bitpacked to minimize the ram impact. Every command begins
with a command byte followed by a byte to determine the parameter count and if a
delay is need after. When the top bit of the second byte is 1, the next byte will be
the delay time in milliseconds. The remaining 7 bits are the parameter count
excluding any delay byte. The third through final bytes are the remaining command
parameters. The next byte will begin a new command definition. Here is a portion of
ILI9341 init code:
.. code-block:: python
init_sequence = (
b"\\xE1\\x0F\\x00\\x0E\\x14\\x03\\x11\\x07\\x31\
\\xC1\\x48\\x08\\x0F\\x0C\\x31\\x36\\x0F"
b"\\x11\\x80\\x78" # Exit Sleep then delay 0x78 (120ms)
b"\\x29\\x80\\x78" # Display on then delay 0x78 (120ms)
)
display = displayio.Display(display_bus, init_sequence, width=320, height=240)
The first command is 0xE1 with 15 (0x0F) parameters following. The second and third
are 0x11 and 0x29 respectively with delays (0x80) of 120ms (0x78) and no parameters.
Multiple byte literals (b”“) are merged together on load. The parens are needed to
allow byte literals on subsequent lines.
The initialization sequence should always leave the display memory access inline with
the scan of the display to minimize tearing artifacts.
"""
self._bus = display_bus
self._set_column_command = set_column_command
self._set_row_command = set_row_command
self._write_ram_command = write_ram_command
self._brightness_command = brightness_command
self._data_as_commands = data_as_commands
self._single_byte_bounds = single_byte_bounds
self._width = width
self._height = height
self._colstart = colstart
self._rowstart = rowstart
self._rotation = rotation
self._auto_brightness = auto_brightness
self._brightness = 1.0
self._auto_refresh = auto_refresh
self._initialize(init_sequence)
self._buffer = Image.new("RGB", (width, height))
self._subrectangles = []
self._bounds_encoding = ">BB" if single_byte_bounds else ">HH"
self._current_group = None
displays.append(self)
self._refresh_thread = None
if self._auto_refresh:
self.auto_refresh = True
self._colorconverter = ColorConverter()
self._backlight_type = None
if backlight_pin is not None:
try:
from pulseio import PWMOut # pylint: disable=import-outside-toplevel
# 100Hz looks decent and doesn't keep the CPU too busy
self._backlight = PWMOut(backlight_pin,
frequency=100,
duty_cycle=0)
self._backlight_type = BACKLIGHT_PWM
except ImportError:
# PWMOut not implemented on this platform
pass
if self._backlight_type is None:
self._backlight_type = BACKLIGHT_IN_OUT
self._backlight = digitalio.DigitalInOut(backlight_pin)
self._backlight.switch_to_output()
self.brightness = brightness
def __init__(self, pwmPin, dirPin, updateCallback = None): self.update_fkt = updateCallback super().__init__(self.update) self.dir = DigitalInOut(dirPin) self.dir.direction = Direction.OUTPUT self.pwm = PWMOut(pwmPin, duty_cycle = self.duty_cycle, frequency = 1000)
led = DigitalInOut(board.D13)
led.direction = Direction.OUTPUT
led.value = True
# Bipolar stepper -- the two coils are A0-A1 and B0-B1.
pin_a0 = DigitalInOut(board.D8)
pin_a0.direction = Direction.OUTPUT
pin_a1 = DigitalInOut(board.D7)
pin_a1.direction = Direction.OUTPUT
pin_b0 = DigitalInOut(board.D5)
pin_b0.direction = Direction.OUTPUT
pin_b1 = DigitalInOut(board.D6)
pin_b1.direction = Direction.OUTPUT
# The h-bridge takes a PWM input, one for each of A and B.
pin_pwm_a = PWMOut(board.D9, frequency=200000, duty_cycle=0)
pin_pwm_b = PWMOut(board.D4, frequency=200000, duty_cycle=0)
# SPI bus connected to the encoder.
spi = SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
spi.try_lock()
spi.configure(baudrate=10000000, polarity=0, phase=1)
spi.unlock()
spi_cs = DigitalInOut(board.A2)
spi_cs.direction = Direction.OUTPUT
def read_encoder():
"""
Returns averaged encoder value in the range (0,_MICROSTEPS_PER_REV).
"""
def __init__(self, Rpin, Gpin, Bpin):
# the object (RGB LED) is initialized with a a red, green, and blue pins
self.Rpin = PWMOut(Rpin, duty_cycle=65535, frequency=500)
self.Gpin = PWMOut(Gpin, duty_cycle=65535, frequency=500)
self.Bpin = PWMOut(Bpin, duty_cycle=65535, frequency=500)
import board
from analogio import AnalogIn
from digitalio import DigitalInOut, Direction
from pulseio import PWMOut, PulseIn, PulseOut
from adafruit_motor import servo
from array import array
# set up on-board LED
led = DigitalInOut(board.LED)
led.direction = Direction.OUTPUT
# set up servos and radio control channels
pwm1 = PWMOut(board.SERVO1, duty_cycle=2**15, frequency=50)
pwm2 = PWMOut(board.SERVO2, duty_cycle=2**15, frequency=50)
#steering_servo = servo.Servo(pwm1)
#throttle_servo = servo.Servo(pwm2)
steering_servo = PulseOut(pwm1)
throttle_servo = PulseOut(pwm2)
steering_channel = PulseIn(board.RCH1)
throttle_channel = PulseIn(board.RCH2)
# functions
def get_voltage(pin):
return (pin.value * 3.3) / 65536
def __init__(self, pin):
"""Setup LED and start first fade animation."""
self.led = PWMOut(pin, frequency=5000, duty_cycle=0)
self.startRun()
# convert ms to 16 bit duty cycle
return int(65535 * ms / 20)
def angle2dc(angle):
# convert 0 to 180 degree angle to 16 bit duty cycle
ms = 1 + (angle / 180)
return int(65535 * ms / 20)
# Servo runs at 50Hz with the following duty cycle times:
# Full forward: 2.0 ms -- old 180
# Stop: 1.5 ms -- old 90 -- 4915
# Full reverse: 1.0 ms -- old 0
leftServo = PWMOut(board.A3, duty_cycle=4915, frequency=50)
rightServo = PWMOut(board.A6, duty_cycle=4915, frequency=50)
def stop():
leftServo.duty_cycle = angle2dc(90)
rightServo.duty_cycle = angle2dc(90)
def go(t, spd=5):
if spd in range(1, 7):
lcspd = (spd * 10) + 120
rcspd = (spd * 10) + 120
leftServo.duty_cycle = angle2dc(lcspd)
rightServo.duty_cycle = angle2dc(rcspd)
else:
'''
实验名称：PWM
版本：v1.0
日期：2020.4
作者：01Studio
说明：输出PWM控制蜂鸣器发出不同频率声音
'''
#导入相关模块
import board
from pulseio import PWMOut
import time
#PWM构建，蜂鸣器引脚A4. frequency值必须大于3，否则报错
PWM = PWMOut(board.A4,
duty_cycle=32768,
frequency=200,
variable_frequency=True)
#循环发出不同频率响声。
while True:
PWM.frequency = 200
time.sleep(1)
PWM.frequency = 400
time.sleep(1)
PWM.frequency = 600
time.sleep(1)
PWM.frequency = 800
def __init__(self, pwmPin, updateCallback = None): self.update_fkt = updateCallback super().__init__(self.update) self.pwm = PWMOut(pwmPin, duty_cycle = self.duty_cycle, frequency = 60)
# note UART(TX, RX, baudrate)
uart = busio.UART(board.TX1, board.RX1, baudrate=115200, timeout=0.001)
## set up servo/motor outputs
## For differential you will be using two motors, no servos
## Pins are:
motor_direction_left = DigitalInOut(board.SERVO3)
motor_direction_left.direction = Direction.OUTPUT
motor_direction_left.value = False
motor_direction_right = DigitalInOut(board.SERVO4)
motor_direction_right.direction = Direction.OUTPUT
motor_direction_right.value = False
left_motor = PWMOut(board.SERVO2,
duty_cycle=motor_duty_cycle(1500),
frequency=500)
right_motor = PWMOut(board.SERVO1,
duty_cycle=motor_duty_cycle(1500),
frequency=500)
# set up RC channels. NOTE: input channels are RCC3 & RCC4 (not RCC1 & RCC2)
throttle_channel = PulseIn(board.RCC3, maxlen=64, idle_state=0)
steering_channel = PulseIn(board.RCC4, maxlen=64, idle_state=0)
# setup Control objects. 1500 pulse is off and center steering
# ASSUMPTION - left motor is on steering, right motor on throttle (for code purposes)
steering = Control("Steering", left_motor, steering_channel, 1500,
motor_duty_cycle)
throttle = Control("Throttle", right_motor, throttle_channel, 1500,
motor_duty_cycle)
def __init__(self, pin1, pin2, updateCallback = None): self.update_fkt = updateCallback super().__init__(self.update) left_duty, right_duty = self.duty_cycle self.pin1 = PWMOut(pin1, duty_cycle = left_duty, frequency = 1000) self.pin2 = PWMOut(pin2, duty_cycle = right_duty, frequency = 1000)
def __init__(self, pins, dot):
self.pwmList = []
for pin in pins:
self.pwmList.append(PWMOut(pin, duty_cycle=0, frequency=5000))
self.dot = dot
