def play_show(tune, pin=27, display=matrix.display, duration=None):
from machine import Pin, PWM
from utime import sleep_ms
try:
pwm = PWM(Pin(pin))
if duration is None:
set_default(tune[0])
else:
set_duration(duration)
for tone in tune:
tone = tone.upper() # all to upper
if tone[0] not in Letter:
continue
if len(tone)==4:
display.showstatic(tone.replace(":",""))
else:
display.showstatic(tone)
m = midi(tone)
pwm.freq(m[0]) # set frequency
pwm.duty(m[1]) # set duty cycle
sleep_ms(m[1])
display.clear()
finally:
pwm.deinit()
class Buzzer:
def __init__(self, pin=Pin(33)):
"""
Create a new Buzzer instance
@param pin: the machine.Pin on which the servo is connected
"""
self.pwm = PWM(pin, freq=3000)
def enable(self):
"""
Enable the output of the buzzer
"""
self.pwm.resume()
def disable(self):
"""
Disable the output of the buzzer
"""
self.pwm.pause()
def set(self, freq):
"""
Set the frequency
@param freq: the frequency to set
"""
self.pwm.duty(freq)
class Servo:
def __init__(self, pin, freq=SERVO_FREQUENCY, timer=2):
"""
Create a new Servo instance
@param pin: the machine.Pin on which the servo is connected
@param freq: the frequency at which the PWM signal should be generated
"""
self.min_pct = SERVO_MIN_PCT
self.max_pct = SERVO_MAX_PCT
self.freq = freq
self.pct_per_degree = (self.max_pct - self.min_pct) / float(180)
self.pwm = PWM(pin, freq=freq, timer=timer)
self.angle(90)
def tune(self, min_pct, max_pct):
self.min_pct = min_pct
self.max_pct = max_pct
self.pct_per_degree = (self.max_pct - self.min_pct) / float(180)
def angle(self, angle=None):
if angle is None:
return (self.pwm.duty() - self.min_pct) / self.pct_per_degree
else:
if 0 <= angle <= 180:
self.pwm.duty(angle * self.pct_per_degree + self.min_pct)
def stop(pin=27):
from machine import Pin, PWM
try:
pwm = PWM(Pin(pin))
pwm.duty(0)
pwm.freq(1)
finally:
pwm.deinit()
def pitch(freq,pin=27,tim=1000): from machine import Pin,PWM from utime import sleep_ms try: pwm=PWM(Pin(pin)) pwm.freq(freq) pwm.duty(tim) sleep_ms(tim) finally: pwm.deinit()
def pitch(self,pin=27,freq=440,tim=0): from machine import Pin,PWM from utime import sleep_ms pwm=PWM(Pin(pin)) if freq>0: pwm.freq(int(freq)) else: pwm.duty(0) if tim>0: sleep_ms(tim) pwm.deinit()
class MPythonPin(Pin):
def __init__(self, pin, mode=PinMode.IN):
if mode not in [PinMode.IN, PinMode.OUT, PinMode.PWM, PinMode.ANALOG]:
raise TypeError("mode must be 'IN, OUT, PWM, ANALOG'")
if pin == 3:
raise TypeError("pin3 is used for resistance sensor")
if pin == 4:
raise TypeError("pin4 is used for light sensor")
if pin == 10:
raise TypeError("pin10 is used for sound sensor")
self.id = pins_remap_esp32[pin]
if mode == PinMode.IN:
super().__init__(self.id, Pin.IN, Pin.PULL_UP)
if mode == PinMode.OUT:
if pin == 2:
raise TypeError('pin2 only can be set "IN, ANALOG"')
super().__init__(self.id, Pin.OUT)
if mode == PinMode.PWM:
if pin == 2:
raise TypeError('pin2 only can be set "IN, ANALOG"')
self.pwm = PWM(Pin(self.id), duty=0)
if mode == PinMode.ANALOG:
if pin not in [0, 1, 2, 3, 4, 10]:
raise TypeError('the pin can~t be set as analog')
self.adc = ADC(Pin(self.id))
self.adc.atten(ADC.ATTN_11DB)
self.mode = mode
def read_digital(self):
if not self.mode == PinMode.IN:
raise TypeError('the pin is not in IN mode')
return super().value()
def write_digital(self, value):
if not self.mode == PinMode.OUT:
raise TypeError('the pin is not in OUT mode')
super().value(value)
def read_analog(self):
if not self.mode == PinMode.ANALOG:
raise TypeError('the pin is not in ANALOG mode')
return self.adc.read()
def write_analog(self, duty, freq=1000):
if not self.mode == PinMode.PWM:
raise TypeError('the pin is not in PWM mode')
self.pwm.freq(freq)
self.pwm.duty(duty)
def play(tune,pin=27,duration=None):
from machine import Pin,PWM
from utime import sleep_ms
try:
pwm=PWM(Pin(pin))
if duration is None:
set_default(tune[0])
else:
set_duration(duration)
for tone in tune:
tone=tone.upper()
if tone[0]not in Letter:
continue
m=midi(tone)
pwm.freq(m[0])
pwm.duty(m[1])
sleep_ms(m[1])
finally:
pwm.deinit()
class Servo:
def __init__(self, pin, lower_duty=512, upper_duty=1953.5, freq=50):
"""
Create a new Servo instance
The lower and upper duty values may be tweaked depending on the servo model being used.
@param pin: the machine.Pin on which the servo is connected
@param lower_duty: the lower duty value
@param upper_duty: the upper duty value
@param freq: the frequency at which the PWM signal should be generated
"""
self.pwm = PWM(pin, freq=freq)
self.lower_duty = (lower_duty * freq) / 10000
self.upper_duty = (upper_duty * freq) / 10000
def set(self, pos):
"""
Set the position as a value between -1 and 1
the position ranges from -1 to 1 where -1 equals 0 degrees and 1 equals 180 degrees
@param pos: an float between -1 and 1, both inclusive
"""
self.set_percentage((pos + 1) * 50)
def set_angle(self, angle):
"""
Set the position as an angle between 0 and 180 degrees
@param angle: an integer between 0 and 180
"""
self.set_percentage(angle / 180)
def angle(self):
"""
Get the servo's angle
:return: the angle expressed as degrees
"""
return int(self.pos() * 180)
def pos(self):
"""
Get the servo's position
:return: the position of the servo as a float between 0 and 1
"""
return int((self.pwm.duty() - self.lower_duty) / (self.upper_duty - self.lower_duty) * 100) / 100
def center(self):
"""
Set the servo to it's center position.
"""
self.set_percentage(0.5)
def min(self):
"""
Set the servo to it's minimum position.
"""
self.set_percentage(0)
def max(self):
"""
Set the servo to it's maximum position.
"""
self.set_percentage(1)
def set_percentage(self, pct):
"""
Set the position as a percentage
freq=50: cycle=1s/50=20ms=0.02: lower=0.001 upper=0.0025
@param pct: a float between 0 and 1
"""
self.pwm.duty(self.lower_duty + (pct * (self.upper_duty - self.lower_duty)))
miso=Pin(12))
oled = SH1106_SPI(128, 64, spi, dc=Pin(25), res=Pin(16), cs=Pin(15))
#显示中文
#oled.draw_chinese('我',0,0)
#oled.draw_chinese('我',4,2)
wlan = network.WLAN(network.STA_IF)
is_heating = 0 # State heating in oled,io output,when heating set to 1
is_setpoint_flag = 0
is_countdown_flag = 0
# PWM Control,设定输出引脚，频率，占空比
heater = PWM(Pin(27)) #GPIO 27
heater.freq(1)
#默认占空比0
heater.duty(0)
#PID Setup
#下面是自由变量，由于没定义系统会报错，所以要先定义并赋值
#参数初始化，p、i、d分别是pid参数
p = '0.00'
i = '0.00'
d = '0.00'
#duty占空比，大部分情况下drive=duty
#drive是计算出来，考虑了最大值和最小值后的值
drive = '0.0'
duty = '0'
duty_min = str('0')
duty_max = str('1023')
#控制周期，经过测试，15.5秒上升1摄氏度，1.5秒上升0.1摄氏度，如果允许误差0.2度，应该设置3秒
sleep_time = str('1.0') #Control loop interval (seconds)
class led_pwm():
# led_pwm is a basic constructor for
def __init__(self, config={}):
pin = config.get("pin", 0)
if pin not in (
0,
2,
4,
5,
12,
13,
14,
15,
):
raise ValueError("pin must be 0, 2, 4, 5, 12, 13, 14, or 15")
self._pwm_device = PWM(Pin(pin, Pin.OUT), freq=500, duty=0)
self.inverted = config.get("inverted", False)
self.is_on = False
self.val = 0
self.state = 'OFF'
self.old_state = None
self.type = config.get("type", "led")
self.topic = config.get("state_topic", None)
self.set_topic = config.get("command_topic", None)
self.value(0)
def __str__(self):
variables = (self.is_on, self.inverted, self.val,
self._pwm_device.duty())
log_str = 'is_on: {}, inverted: {}, value: {}, duty: {}'
return log_str.format(*variables)
def value(self, value=None):
if value == None:
return self.val
elif 0 > value > 255:
raise ValueError('value must be between 0 and 255')
self.val = value
if value == 0:
self.is_on = False
self.state = 'OFF'
else:
self.is_on = True
self.state = 'ON'
if self.inverted:
pin_val = 1023 - int(round(value * 4.012))
else:
pin_val = int(round(value * 4.012))
self._pwm_device.duty(pin_val)
return self.val
def update(self, state):
if isinstance(state, str):
state = state.lower() # convert value to lower case
on_states = ('true', 'on', True, 1, '1')
off_states = ('false', 'off', False, 0, '0')
if state in on_states:
self.on()
elif state in off_states:
self.off()
def check_state(self):
pass
def on(self):
self.value(255)
def off(self):
self.value(0)
def toggle(self):
if self.is_on:
self.value(0)
else:
self.value(255)
from machine import Timer, PWM
import time
from board import board_info
from fpioa_manager import *
board_info = board_info()
tim = Timer(Timer.TIMER0, Timer.CHANNEL0, mode=Timer.MODE_PWM)
ch = PWM(tim, freq=500000, duty=50, pin=board_info.LED_G)
duty = 0
dir = True
while True:
if dir:
duty += 10
else:
duty -= 10
if duty > 100:
duty = 100
dir = False
elif duty < 0:
duty = 0
dir = True
time.sleep(0.05)
ch.duty(duty)
from machine import PWM
# frequency ranges upto 1Hz and Duty scycle of 512
led = PWM(4, freq=1000, duty=512)
# Connect your LED to D2 or GPIO4 of NodeMCU
# First it starts from 0 duty cycle and ends to 510
try:
for i in range(0, 511, 5):
led.duty(i)
print(i)
# then it recides from 510 to 0 and then deinitlises the process
for i in range(510, -5, -5):
led.duty(i)
print(i)
led.deinit() # Deinitialises the process
except KeyboardInterrupt:
print("User ended the Program, bye...!!!!")
import common
from machine import Pin, PWM
from encoder import Encoder
MAX_STEPS_ENCODER = 32
CLIENT_ID = 'LIGHTS'
SUBTOPIC = b"%s/set/#" % CLIENT_ID
PUBTOPIC_ON = b"%s/state/power" % CLIENT_ID
PUBTOPIC_VALUE = b"%s/state/intensity" % CLIENT_ID
light_pin = Pin(14) # D5
light_pwm = PWM(light_pin, freq=1000)
light_pwm.duty(512) # 0 = 0%, 1023 = 100%
sw = Pin(5, Pin.IN, Pin.PULL_UP) # d1
light_intensity = 1
light_on = True
def set_light(on, value):
light_pwm.duty(on * value)
common.publish(PUBTOPIC_ON, str(on))
common.publish(PUBTOPIC_VALUE, str(value))
def update_light():
value = light_intensity * int(1024 / MAX_STEPS_ENCODER)
set_light(int(light_on), value)
@common.debounce(250)
class RgbLightDriver:
def __init__(self, r_pin_num, g_pin_num, b_pin_num):
self.r_pwm = PWM(Pin(r_pin_num))
self.g_pwm = PWM(Pin(g_pin_num))
self.b_pwm = PWM(Pin(b_pin_num))
self.b = 0
self.c = {'r': 0, 'g': 0, 'b': 0}
def on(self):
self.__update()
def off(self):
self.r_pwm.duty(1023)
self.g_pwm.duty(1023)
self.b_pwm.duty(1023)
def color(self, value):
self.c = value
self.__update()
def brightness(self, value):
self.b = value
self.__update()
def __update(self):
self.r_pwm.duty(
int(1023 * (1.0 - self.b * self.c['r'] / 255.0 / 255.0)))
self.g_pwm.duty(
int(1023 * (1.0 - self.b * self.c['g'] / 255.0 / 255.0)))
self.b_pwm.duty(
int(1023 * (1.0 - self.b * self.c['b'] / 255.0 / 255.0)))
from machine import PWM, Pin
import time
PWM_PORT = 2
PWM_FREQ = 1000
DUTY_DEFAULT = 1023
DUTY_MIN = 0
DUTY_MAX = 1023
pwm = PWM(Pin(PWM_PORT), freq=PWM_FREQ, duty=DUTY_DEFAULT)
for i in range(1023):
pwm.duty(1023 - i)
print("duty: {}".format(1023 - i))
time.sleep_ms(10)
from machine import Pin,PWM import time p14=Pin(14) # the buzzer runs from this pin pwm14=PWM(p14) pwm14.freq(500) pwm14.duty(512) time.sleep(1) pwm14.deinit()
class Main(HeatControl):
def __init__(self):
super().__init__()
self.wifi_led = Pin(2, Pin.OUT,
value=1) # Pin2, светодиод на плате контроллера
self.heat = PWM(Pin(13), freq=1000,
duty=0) # Pin12, управление нагревом пола
self.default_on = Pin(
14, Pin.IN) # Pin14, кнопка для сброса настроек в дефолт
self.i2c = I2C(scl=Pin(5), sda=Pin(4),
freq=400000) # Настройка шины i2c
self.ds = DS18X20(OneWire(Pin(12))) # Set Temperature sensors
# Дефолтные настройки, если файла config.txt не будет обнаружено в системе
self.default = {}
self.default['MODE'] = 'AP' # Включаем точку доступа
self.default[
'ssid'] = 'HEAT_CONTROL' # Устанавливаем имя точки доступа
self.default['pass'] = '******' # Пароль для точки доступа
self.default['timezone'] = 3 # Временная зона
self.default[
'DST'] = True # Разрешаем переход с летнего на зимнее время
self.default[
'SET'] = 20.0 # Установка поддерживаемой температуры в помещении
self.default['DAY'] = 50 # Уменьшение мощности в дневное время в %
self.default['ON'] = (0, 0, 0, 22, 0, 0, 0, 0
) # Время включения обогрева 20:00
self.default['OFF'] = (0, 0, 0, 8, 0, 0, 0, 0
) # Время выключения обогрева 08:00
self.default['WORK'] = 'ON' # Постоянный обогрев включен
self.default['DS_K'] = -5.0 # Поправочный коэффициент для DS18B20
# Дефолтный хещ логин, пароль для web admin (root:root)
self.default_web = str(
b'0242c0436daa4c241ca8a793764b7dfb50c223121bb844cf49be670a3af4dd18'
)
# Основные настройки системы
self.config[
'DEBUG'] = False # Режим отладки, делаем программу разговорчивой
self.config['RTC_DS3231'] = 0x68 # Адрес DS3231 RTC
self.config['WIFI_AP'] = ('192.168.4.1', '255.255.255.0',
'192.168.4.1', '208.67.222.222')
self.config['TARIFF_ZONE'] = (
(7, 0, 0), (22, 59, 59)) # Тарифнаф зона день с 7 до 22:59
self.config['DAY_ZONE'] = (
(7, 0, 0), (22, 59, 59)) # Дефолтное значение тарифной зоны день
self.config['TEMP'] = 18.00 # Начальное значение темратуры в помещении
self.config[
'DUTY_MIN'] = 0 # Режим работы ПИД регулятора, минимальный предел
self.config[
'DUTY_MAX'] = 90 # Режим работы ПИД регулятора, максимальный предел, установлен в 90%
# для исключения перегрева нагревателя
self.config['RTC_TIME'] = (0, 1, 1, 0, 0, 0, 0, 0) # Дефолтное время
self.config['PID_KP'] = 5
self.config['PID_KI'] = 0.1
self.config['PID_KD'] = 0.01
self.config['SETPOWER'] = 0 # Заданное значение мощности нагревателя
self.config['POWER'] = 0 # Начальное значение мощности нагревателя
self.config['NTP_UPDATE'] = True # Разрешаем обновление по NTP
self.config['IP'] = None # Дефолтный IP адрес
self.config['no_wifi'] = True # Интернет отключен(значение True)
# Eсли файла config.txt не обнаружено в системе создаем его
if self.exists('config.txt') == False or not self.default_on():
read_write_config(cfg=self.default)
# Eсли файла root.txt нет создаем его
if self.exists('root.txt') == False or not self.default_on():
read_write_root(passwd=self.default_web)
# Читаем настройки из файла config.txt
update_config()
# Начальные настройки сети AP или ST
if self.config['MODE'] == 'AP':
self._ap_if = WLAN(AP_IF)
self.config['WIFI'] = self._ap_if
elif self.config['MODE'] == 'ST':
self._sta_if = WLAN(STA_IF)
self.config['WIFI'] = self._sta_if
# Настройка для работы с RTC
self.config['RTC']= DS3231(self.i2c, \
self.config['RTC_DS3231'], self.config['timezone'], ) #В ключаем работу с модулем RTC DS3231
self.rtc = self.config['RTC']
self.config['NOW'] = mktime(self.rtc.datetime())
# Включаем поддержку TIME ZONE
self.tzone = TZONE(self.config['timezone'])
loop = asyncio.get_event_loop()
loop.create_task(self._heartbeat()) # Индикация подключения WiFi
loop.create_task(
self._collection_temp()
) # Сбор информации с температурных датчиков DS18D20 и Вычисление тарифных зон
loop.create_task(self._dataupdate()) # Обновление информации и часы
loop.create_task(self._start_web_app()) # Включаем WEB приложение
collect() #Очищаем RAM
async def _dataupdate(self):
while True:
# RTC Update
self.config['RTC_TIME'] = self.rtc.datetime()
rtc = self.config['RTC_TIME']
self.config['NOW'] = mktime(rtc)
# Проверка летнего или зименего времени каждую минуту в 30с
if rtc[5] == 30:
self.rtc.settime('dht')
# Если у нас режим подключения к точке доступа и если есть соединение, подводим часы по NTP
if self.config['MODE'] == 'ST' and not self.config['no_wifi']:
# Подводка часов по NTP каждые сутки в 22:00:00
if rtc[3] == 22 and rtc[4] == 5 and rtc[5] < 3 and self.config[
'NTP_UPDATE']:
self.config['NTP_UPDATE'] = False
self.rtc.settime('ntp')
await asyncio.sleep(1)
self.config['NTP_UPDATE'] = True
collect() #Очищаем RAM
await asyncio.sleep(1)
#Индикация подключения WiFi
async def _heartbeat(self):
while True:
if self.config['no_wifi'] == True:
self.wifi_led(not self.wifi_led()
) #Быстрое мигание, если соединение отсутствует
await asyncio.sleep_ms(200)
elif self.config['no_wifi'] == False:
self.wifi_led(0) #Редкое мигание при подключении
await asyncio.sleep_ms(50)
self.wifi_led(1)
await asyncio.sleep_ms(5000)
else:
self.wifi_led(0) #Два быстрых миганиения при AP Mode
await asyncio.sleep_ms(50)
self.wifi_led(1)
await asyncio.sleep_ms(50)
self.wifi_led(0)
await asyncio.sleep_ms(50)
self.wifi_led(1)
await asyncio.sleep_ms(5000)
# Сбор данных с DS18D20, Вычисление тарифной зоны день, Управление отоплением и логикой работы отопления
async def _collection_temp(self):
roms = self.ds.scan()
#Создаем ПИД регулятор
pid = PID(self.config['PID_KP'],
self.config['PID_KI'],
self.config['PID_KD'],
setpoint=self.config['SET'])
#Устанавливаем минимальный и максимальный предел работы регулятора
pid.output_limits = (self.config['DUTY_MIN'], self.config['DUTY_MAX'])
#Устанавливаем поддерживаемую температуру
t_room = self.config['SET']
heat = False
while True:
rtc = self.config['RTC_TIME']
# Вычисление тарифной зоны день, если минуты обнулились, прошел 1 час делаем проверку тарифной зоны
if self.config['RTC_TIME'][
4] == 0 and self.config['RTC_TIME'][5] < 10:
delta = self.config['timezone'] - self.tzone.adj_tzone(
self.config['RTC_TIME'])
if delta == 1: #Если Зимняя тарифная зона вычитаем из часов delta
self.config['DAY_ZONE'] = ((self.config['TARIFF_ZONE'][0][0]-delta,)\
+self.config['TARIFF_ZONE'][0][1:]),\
(self.config['TARIFF_ZONE'][1][0]-delta,)+self.config['TARIFF_ZONE'][1][1:]
else: #Если Летняя тарифная зона, 'DAY_ZONE' = 'TARIFF_ZONE'
self.config['DAY_ZONE'] = self.config['TARIFF_ZONE']
# Считываем показания с датчика температуры
self.ds.convert_temp()
await asyncio.sleep(2)
self.config['TEMP'] = round(
self.ds.read_temp(roms[0]) + self.default['DS_K'], 2)
#Логика управления отоплением
st = self.config['DAY_ZONE'][0]
end = self.config['DAY_ZONE'][1]
st = mktime((rtc[0], rtc[1], rtc[2], st[0], 0, 0, 0, 0))
end = mktime(
(rtc[0], rtc[1], rtc[2], end[0], end[1], end[2], 0, 0))
# Если тариф дневной зоны, ограничиваем мощность нагрева на self.config['DAY']%
if st < self.config['NOW'] and self.config['NOW'] < end:
pid.output_limits = (self.config['DUTY_MIN'],
self.config['DAY'])
self.config['SETPOWER'] = self.config['DAY']
else: # Если тариф ночной зоны, разрешаем нагрев до self.config['DUTY_MAX']%
pid.output_limits = (self.config['DUTY_MIN'],
self.config['DUTY_MAX'])
self.config['SETPOWER'] = self.config['DUTY_MAX']
if t_room != self.config['SET']:
pid.set_setpoint = self.config['SET']
t_room = self.config['SET']
# Вычисляем мощность нагрева
if heat:
self.config['POWER'] = round(
pid(self.config['TEMP']) * 10
) # Для ШИМ необходим диапазон от 0 до 1000, умножаем мощность на 10
else:
self.config['POWER'] = 0
self.heat.duty(self.config['POWER'])
# Обрабатываем режимы работы контроллера
if self.config['WORK'] == 'ON': # Режим поддержания температуры
heat = True
elif self.config['WORK'] == 'TAB': # Режим работы по рассписанию
on = self.config['ON']
off = self.config['OFF']
d = rtc[2] + 1 if int(on[3]) > int(off[3]) else rtc[2]
on = mktime((rtc[0], rtc[1], rtc[2], on[3], on[4], 0, 0, 0))
off = mktime((rtc[0], rtc[1], d, off[3], off[4], 0, 0, 0))
if self.config['NOW'] > on and self.config['NOW'] < off:
heat = True
else:
heat = False
elif self.config['WORK'] == 'OFF': # Обогрев выключен
heat = False
else:
heat = False
collect() #Очищаем RAM
await asyncio.sleep(10)
#Запуск WEB приложения
async def _start_web_app(self):
while True:
await asyncio.sleep(5)
if not self.config['no_wifi'] or self.config['MODE'] == 'AP':
self.ip = self.config['WIFI'].ifconfig()[0]
self.dprint('Run WebAPP...')
app.run(debug=self.config['DEBUG'], host=self.ip, port=80)
async def _run_main_loop(self): # Бесконечный цикл
while True:
#lt = self.config['RTC_TIME']
#try:
# self.dprint('IP:', self.config['IP'])
# self.dprint('Local Time:', '{:0>2d}-{:0>2d}-{:0>2d} {:0>2d}:{:0>2d}:{:0>2d}'\
# .format(lt[0], lt[1], lt[2], lt[3], lt[4], lt[5]))
# self.dprint('MemFree:', '{}Kb'.format(str(round(mem_free()/1024, 2))))
# self.dprint('MemAvailab:', '{}Kb'.format(str(round(mem_alloc()/1024, 2))))
#except Exception as e:
# self.dprint('Exception occurred: ', e)
collect() # Очищаем RAM
await asyncio.sleep(30)
async def main(self):
while True:
try:
await self.connect() #Включение WiFi и контроль соединения
await self._run_main_loop()
except Exception as e:
self.dprint('Global communication failure: ', e)
await asyncio.sleep(20)
from time import sleep from machine import Pin, PWM pwm = PWM(Pin(17, Pin.OUT), freq=50, duty=75) pwm.duty(50) # left sleep(1) pwm.duty(75) # middle sleep(1) pwm.duty(100) # right sleep(1) pwm.deinit()
from machine import Pin, PWM
import time
buzzer = PWM(Pin(13))
pitches = {
'C5': 523,
'D5': 587,
'E5': 659,
'F5': 698,
'G5': 784,
'A5': 880,
'B5': 988,
'S': 0
}
melody = (('E5', 100), ('S', 100), ('E5', 100), ('S', 300), ('E5', 100),
('S', 300), ('C5', 100), ('S', 100), ('E5', 100), ('S', 300), ('G5',
100))
for tone, tempo in melody:
if tone == 'S':
buzzer.duty(0)
else:
buzzer.duty(900)
buzzer.freq(pitches[tone])
time.sleep_ms(tempo)
buzzer.deinit()
while True:
if run_flag:
for pos in pos_list:
servo.duty(pos)
await asyncio.sleep_ms(interval_ms)
dist_cm = await async_measure_range()
pos_actual = pos
elif not run_flag:
await asyncio.sleep(0) # do nothing
#stop all motors first
stop_all_sync()
# move servo to initial position
print('Move sensor to initial position...')
servo.duty(75)
sleep(1) #wait 1s for servo reaching initial position
print('Waiting for start button...')
#enable gc
gc.enable()
# create callback fo button:
button.irq(trigger=Pin.IRQ_FALLING, handler=callback)
# define loop
loop = asyncio.get_event_loop()
#create looped tasks
loop.create_task(blink_led(syst_led, interval_ms=250))
loop.create_task(radar_scan(interval_ms=250))
from machine import Pin, PWM, ADC
import time
led = PWM(Pin(32), freq=5000) # create and configure
adc = ADC(Pin(34))
adc.atten(ADC.ATTN_11DB)
delay = 0.02
while True:
value = int(adc.read() * 0.25) # convert range 0-4095 to 0-1023
led.duty(value)
print(value)
time.sleep(delay)
class Feeder(object):
def __init__(
self,
pin_servo=None,
trigger=None,
echo=None,
):
"""
servo's minimum duty 27
"""
self._open_position = None
self._open_position_max = 38
self._pause_open = None
self._pause_open_max = 0.8
self._close_position = 77
self._trigger = trigger
self._remaining_quantity = None
self._full_quantity = 1
self._empty_quantity = 25
self._distance_cm = None
self._servo = PWM(Pin(pin_servo, Pin.OUT),
freq=50,
duty=self._close_position)
if self._trigger:
self._distance_trigger = Pin(trigger, Pin.OUT)
self._distance_echo = Pin(echo, Pin.IN)
@property
def open_position(self):
return float(self._open_position)
@open_position.setter
def open_position(self, value):
self._open_position = float(value)
@property
def pause_open(self):
return float(self._pause_open)
@pause_open.setter
def pause_open(self, value):
self._pause_open = float(value)
@property
def remaining_quantity(self):
""""""
if not self._trigger:
return str(-1)
if self._distance_cm is None:
return str(-1)
result = self.map_range(self.distance_cm,
(self._empty_quantity, self._full_quantity),
(0, 100))
print('Full at %s%s.' % (result, "%"))
return str(result)
@remaining_quantity.setter
def remaining_quantity(self, value):
self._remaining_quantity = value
@property
def distance_cm(self):
return self._distance_cm
@distance_cm.setter
def distance_cm(self, value):
self._distance_cm = value
def distance_in_cm(self):
start = 0
end = 0
self._distance_trigger.on()
time.sleep_us(10)
self._distance_trigger.off()
while self._distance_echo.value() == 0:
start = time.ticks_us()
while self._distance_echo.value() == 1:
end = time.ticks_us()
diff = time.ticks_diff(start, end)
# Calc the duration of the recieved pulse, divide the result by
# 2 (round-trip) and divide it by 29 (the speed of sound is
# 340 m/s and that is 29 us/cm).
dist_in_cm = (diff / 2) / 29
self._distance_cm = -dist_in_cm
print("Distance: %s cm." % self._distance_cm)
if self._distance_cm > self._empty_quantity:
self._distance_cm = self._empty_quantity
return self._distance_cm
def get_opening_ratio(self):
""""""
if not self._trigger:
return self._open_position, self._pause_open
dist = self.distance_in_cm()
opening_ratio = self.map_range(
dist, (self._empty_quantity, self._full_quantity),
(self._open_position_max, self._open_position))
pause_ratio = self.map_range(
dist, (self._empty_quantity, self._full_quantity),
(self._pause_open, self._pause_open_max))
if pause_ratio > 2:
pause_ratio = 2
return opening_ratio, pause_ratio
@staticmethod
def map_range(value, old_range, new_range):
""""""
old_range_max, old_range_min = old_range
old_range = old_range[0] - old_range[1]
new_range_max, new_range_min = new_range
new_range = new_range[0] - new_range[1]
new_value = (
(value - old_range_min) * new_range / old_range) + new_range_min
return round(new_value, 2)
def feed(self):
""""""
# open_ratio, pause_ratio = self.get_opening_ratio()
open_ratio = self.open_position
pause_ratio = self.pause_open
print('Opening to: %i degrees.' % open_ratio)
print('Pausing for: %f sec.\n' % pause_ratio)
self._servo.duty(int(round(open_ratio)))
time.sleep(pause_ratio)
self._servo.duty(self._close_position)
# print('Done feeding: %s' % self._servo.__name__)
return
ie = request.find(
' ', ib) #init address of the index with ib,then find ' '
Val = request[ib +
4:ie] #get the string of ib+4 to ie in the request
print("Val =", Val)
led.duty(int(Val) * 100) #set the duty of led
conn.send(Val) #send data
else:
with open('Ajax_webCtrl.html',
'r') as html: #open file 'webCtrl.htm' with readonly
conn.sendall(html.read(
)) #read data from 'webCtrl.htm',and send all of the data
conn.sendall('\r\n')
conn.close() #close file
#print("Connection wth %s closed" % str(addr))
#Catch exceptions,stop program if interrupted accidentally in the 'try'
try:
led = PWM(Pin(2), freq=100) #create led object
led.init()
led.duty(0)
connectWifi(SSID, PASSWORD)
ajaxWebserv()
except:
if (s):
s.close()
led.deinit()
wlan.disconnect()
wlan.active(False)
import network
wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.connect("itcollege")
import sys
import uwebsockets
from machine import Pin, PWM
led = PWM(Pin(14, mode=Pin.OUT), freq=400) # SCK LED on WeMos D1
uri = "ws://iot.koodur.com:80/ws/mllnd-xyz"
print("Connecting to:", uri)
conn = uwebsockets.connect(uri)
conn.send("alive")
while True:
print("Reading message...")
try:
fin, opcode, data = conn.read_frame()
except OSError: # Connection timeout or reset
sys.exit() # Soft reset
if data.startswith(b"duty:"):
led.duty(int(data[5:]))
else:
print("Got unknown command:", data)
# -*- coding: utf-8 -*-
"""
程式說明請參閱9-22頁
"""
from machine import Pin, PWM
motorPin = Pin(13, Pin.OUT)
MOTOR = PWM(motorPin, 1000)
CLK = Pin(14, Pin.IN)
DT = Pin(12, Pin.IN)
power = 0
step = 10
prev = CLK.value()
while True:
now = CLK.value()
if now != prev:
if DT.value() != now:
power = min(1023, power + step)
else:
power = max(0, power - step)
print("power: " + str(power))
MOTOR.duty(power)
prev = now
#
# this is workaround for using L298N as 3.3V PWM
# wemos d1 mini 13 : D7
# wemos d1 mini 15 : D8
# wemos d1 mini 2 : D4
# fixed on: (D7 = HIGH, D8 = LOW)
# fixed off: (D7 = LOW, D8 = LOW)
# duty range : 0 ~ 1023
p13 = Pin(13, Pin.OUT)
p15 = Pin(15, Pin.OUT)
p13.off() # on
p15.off() # off
pwm0 = PWM(Pin(2))
pwm0.duty(0)
######################################################
targetT = 195
p = Pid.Pid(targetT, {"P": 22.2, "I": 1.09, "D": 114}, 0)
if __name__ == 'builtins':
while 1:
temperature = thermistor.getTemperature()
if (temperature is None):
continue
targetPwm = p.update(temperature)
print("[fixed : %d] Target: %.1f C | Current: %.1f C | PWM: %s %%" %
class WifiManager:
AUTH_MODES = {
0: "open",
1: "WEP",
2: "WPA-PSK",
3: "WPA2-PSK",
4: "WPA/WPA2-PSK"
}
def __init__(self,
ap_name='',
ap_password='',
filepath='profiles.txt',
connection_max_retries=10,
led_pin=2):
self._filepath = filepath
self._ap_name = ap_name
self._ap_password = ap_password
self._connection_max_retries = connection_max_retries
self.wlan = network.WLAN(network.STA_IF)
self.ap = network.WLAN(network.AP_IF)
self._profiles = self._read_profiles()
self.led = PWM(Pin(led_pin))
self._led_off()
def is_access_point_mode(self):
return self.ap.active()
def is_wifi_connected(self):
return self.wlan.active()
def auto_connect(self, include_open=False):
self._led_flash_slow()
print('Attempting auto connect')
if not self._profiles:
print('No stored profiles, exposing AP')
self.start_ap()
return
connected = False
# start by scanning all available access points
print('Scanning for networks')
networks = self.access_point_scan()
for ssid, bssid, channel, rssi, authmode, hidden in sorted(
networks, key=lambda x: x[3], reverse=True):
ssid = ssid.decode('utf-8')
encrypted = authmode > 0
print("\t Found ssid: %s chan: %d rssi: %d authmode: %s" %
(ssid, channel, rssi, self.AUTH_MODES.get(authmode, '?')))
if not encrypted and include_open:
# it's not secured so let's try to connect
connected = self.connect(ssid)
else:
if ssid not in self._profiles:
# we don't have any profiles for this network so skipping
continue
connected = self.connect(ssid, self._profiles[ssid])
if connected:
break
if not connected:
print('Failed to detect any previous networks, exposing AP')
self.start_ap()
def start_ap(self):
self._led_off()
print('Starting AP {}'.format(self._ap_name))
self.stop_wlan()
# activate the interface
self.ap.active(True)
# configure the params
self.ap.config(essid=self._ap_name, password=self._ap_password)
def stop_ap(self):
# deactivate the interface
self.ap.active(False)
def start_wlan(self):
# activate the interface
self.wlan.active(True)
def stop_wlan(self):
if self.wlan.isconnected():
self.wlan.disconnect()
# deactivate the interface
self.wlan.active(False)
def connect(self, essid='', password=''):
if self.wlan.isconnected():
self.disconnect()
self._led_flash_fast()
print('connecting to {} . . .'.format(essid))
# switch from ap to wlan mode
self.start_wlan()
self.wlan.connect(essid, password)
# wait a few seconds to see if the connection was successful
for _ in range(self._connection_max_retries * 2):
if self.wlan.isconnected():
break
time.sleep(0.5)
print('. . .')
# set the led to be on
if not self.wlan.isconnected():
print('error connecting to {}'.format(essid))
# enable ap again
self.start_ap()
# set the led to be dim
self._led_off()
return False
self._led_on()
print('connected')
self._add_new_profile(essid, password)
return True
def disconnect(self):
print('disconnecting . . .')
self.wlan.disconnect()
def access_point_scan(self):
self.start_wlan()
# scan and return all available access points
return self.wlan.scan()
def _read_profiles(self):
profiles = {}
try:
with open(self._filepath) as f:
line = f.readline()
if not line:
# EOF
return profiles
ssid, password = line.strip('\n').split(";")
profiles[ssid] = password
except OSError:
pass
finally:
return profiles
def _add_new_profile(self, ssid, password):
try:
self._profiles = self._read_profiles()
self._profiles[ssid] = password
self._write_profiles(self._profiles)
except Exception as exc:
print('Error adding new profile {}'.format(exc))
def _write_profiles(self, profiles):
try:
print('Writing profiles')
with open(self._filepath, "w") as f:
for ssid, password in profiles.items():
f.write("{};{}\n".format(ssid, password))
print('Profile writing completed')
except Exception as exc:
print('Error writing profiles {}'.format(exc))
def _led_off(self):
self.led.duty(0)
self.led.freq(2000)
def _led_on(self):
self.led.duty(512)
self.led.freq(2000)
def _led_flash_slow(self):
self.led.duty(512)
self.led.freq(1)
def _led_flash_fast(self):
self.led.duty(512)
self.led.freq(5)
from machine import Pin, PWM
import time
# externe LED zit op pin D1 (GPIO5)
PinNum = 5
# pwm initialisatie
pwm1 = PWM(Pin(PinNum))
pwm1.freq(60)
pwm1.duty(0)
step = 100
for i in range(10):
# oplichten
while step < 1000:
pwm1.duty(step)
time.sleep_ms(500)
step+=100
# uitdoven
while step > 0:
pwm1.duty(step)
time.sleep_ms(500)
step-=200
# pwm resetten
pwm1.deinit()
class Buzzer():
B0 = 31
C1 = 33
CS1 = 35
D1 = 37
DS1 = 39
E1 = 41
F1 = 44
FS1 = 46
G1 = 49
GS1 = 52
A1 = 55
AS1 = 58
B1 = 62
C2 = 65
CS2 = 69
D2 = 73
DS2 = 78
E2 = 82
F2 = 87
FS2 = 93
G2 = 98
GS2 = 104
A2 = 110
AS2 = 117
B2 = 123
C3 = 131
CS3 = 139
D3 = 147
DS3 = 156
E3 = 165
F3 = 175
FS3 = 185
G3 = 196
GS3 = 208
A3 = 220
AS3 = 233
B3 = 247
C4 = 262
CS4 = 277
D4 = 294
DS4 = 311
E4 = 330
F4 = 349
FS4 = 370
G4 = 392
GS4 = 415
A4 = 440
AS4 = 466
B4 = 494
C5 = 523
CS5 = 554
D5 = 587
DS5 = 622
E5 = 659
F5 = 698
FS5 = 740
G5 = 784
GS5 = 831
A5 = 880
AS5 = 932
B5 = 988
C6 = 1047
CS6 = 1109
D6 = 1175
DS6 = 1245
E6 = 1319
F6 = 1397
FS6 = 1480
G6 = 1568
GS6 = 1661
A6 = 1760
AS6 = 1865
B6 = 1976
C7 = 2093
CS7 = 2217
D7 = 2349
DS7 = 2489
E7 = 2637
F7 = 2794
FS7 = 2960
G7 = 3136
GS7 = 3322
A7 = 3520
AS7 = 3729
B7 = 3951
C8 = 4186
CS8 = 4435
D8 = 4699
DS8 = 4978
def __init__(self):
self.notes = {
'cdef': [
self.C6, self.D6, self.E6, self.F6, self.G6, self.A6, self.B6,
self.C7, self.D7, self.E7, self.F7, self.G7, self.A7, self.B7,
self.C8, 0
],
'mario': [
self.E7, self.E7, 0, self.E7, 0, self.C7, self.E7, 0, self.G7,
0, 0, 0, self.G6, 0, 0, 0, self.C7, 0, 0, self.G6, 0, 0,
self.E6, 0, 0, self.A6, 0, self.B6, 0, self.AS6, self.A6, 0,
self.G6, self.E7, 0, self.G7, self.A7, 0, self.F7, self.G7, 0,
self.E7, 0, self.C7, self.D7, self.B6, 0, 0, self.C7, 0, 0,
self.G6, 0, 0, self.E6, 0, 0, self.A6, 0, self.B6, 0, self.AS6,
self.A6, 0, self.G6, self.E7, 0, self.G7, self.A7, 0, self.F7,
self.G7, 0, self.E7, 0, self.C7, self.D7, self.B6, 0, 0
],
'starwars': [
self.A4,
0,
0,
0,
self.A4,
0,
0,
0,
self.A4,
0,
0,
0,
self.F4,
0,
0,
self.C5,
self.A4,
0,
0,
0,
self.F4,
0,
0,
self.C5,
self.A4,
0,
0,
0,
0,
0,
0,
0,
self.E5,
0,
0,
0,
self.E5,
0,
0,
0,
self.E5,
0,
0,
0,
self.F5,
0,
0,
self.C5,
self.GS4,
0,
0,
0,
self.F4,
0,
0,
self.C5,
self.A4,
0,
0,
0,
0,
0,
0,
0,
],
}
def playnotes(self, title, length=150, duty=64):
# Init
p = Pin(27, Pin.OUT)
self.pwm = PWM(p)
self.pwm.duty(0)
if title not in self.notes:
print('unknown title: {}'.format(title))
return
melody = self.notes[title]
print('Play', title)
for i in melody:
if i == 0:
self.pwm.duty(0)
else:
self.pwm.freq(i)
self.pwm.duty(duty)
time.sleep_ms(length)
# deinit
self.pwm.deinit()
class MPythonPin():
def __init__(self, pin, mode=PinMode.IN, pull=None):
if mode not in [
PinMode.IN, PinMode.OUT, PinMode.PWM, PinMode.ANALOG,
PinMode.OUT_DRAIN
]:
raise TypeError("mode must be 'IN, OUT, PWM, ANALOG,OUT_DRAIN'")
if pin == 4:
raise TypeError("P4 is used for light sensor")
if pin == 10:
raise TypeError("P10 is used for sound sensor")
try:
self.id = pins_remap_esp32[pin]
except IndexError:
raise IndexError("Out of Pin range")
if mode == PinMode.IN:
# if pin in [3]:
# raise TypeError('IN not supported on P%d' % pin)
self.Pin = Pin(self.id, Pin.IN, pull)
if mode == PinMode.OUT:
if pin in [2, 3]:
raise TypeError('OUT not supported on P%d' % pin)
self.Pin = Pin(self.id, Pin.OUT, pull)
if mode == PinMode.OUT_DRAIN:
if pin in [2, 3]:
raise TypeError('OUT_DRAIN not supported on P%d' % pin)
self.Pin = Pin(self.id, Pin.OPEN_DRAIN, pull)
if mode == PinMode.PWM:
if pin not in [
0, 1, 5, 6, 7, 8, 9, 11, 13, 14, 15, 16, 19, 20, 23, 24,
25, 26, 27, 28
]:
raise TypeError('PWM not supported on P%d' % pin)
self.pwm = PWM(Pin(self.id), duty=0)
if mode == PinMode.ANALOG:
if pin not in [0, 1, 2, 3, 4, 10]:
raise TypeError('ANALOG not supported on P%d' % pin)
self.adc = ADC(Pin(self.id))
self.adc.atten(ADC.ATTN_11DB)
self.mode = mode
def irq(self, handler=None, trigger=Pin.IRQ_RISING):
if not self.mode == PinMode.IN:
raise TypeError('the pin is not in IN mode')
return self.Pin.irq(handler, trigger)
def read_digital(self):
if not self.mode == PinMode.IN:
raise TypeError('the pin is not in IN mode')
return self.Pin.value()
def write_digital(self, value):
if self.mode not in [PinMode.OUT, PinMode.OUT_DRAIN]:
raise TypeError('the pin is not in OUT or OUT_DRAIN mode')
self.Pin.value(value)
def read_analog(self):
if not self.mode == PinMode.ANALOG:
raise TypeError('the pin is not in ANALOG mode')
return self.adc.read()
def write_analog(self, duty, freq=1000):
if not self.mode == PinMode.PWM:
raise TypeError('the pin is not in PWM mode')
self.pwm.freq(freq)
self.pwm.duty(duty)
# POT: ESP32:
# GND --> GND
# Signal --> GPIO34
# VCC --> 3V3
# LED: ESP32:
# GND add 330 Ohm --> GND
# VCC --> GPIO5
from machine import Pin, PWM, ADC
from time import sleep
frequency = 5000
led = PWM(Pin(5), frequency)
pot = ADC(Pin(34))
pot.width(ADC.WIDTH_10BIT)
pot.atten(ADC.ATTN_11DB)
while True:
pot_value = pot.read()
print(pot_value)
if pot_value < 15:
led.duty(0)
else:
led.duty(pot_value)
sleep(0.1)
class ServoController:
_pwm_freq = 200
_tone_duty = {
'l': 342,
'm': 318,
'h': 293}
_mallet_duty = {
'd': 265,
'u': 350}
_servo_tone = None
_servo_mallet = None
def __init__(self, pin_tone, pin_mallet):
self._servo_tone = PWM(Pin(pin_tone), freq=self._pwm_freq)
self._servo_mallet = PWM(Pin(pin_mallet), freq=self._pwm_freq)
def ring(self, tone, move=True, raise_time=0.12):
if move:
self.rot_tone(tone)
time.sleep(0.7)
self.rot_mallet('d')
time.sleep(raise_time)
self.rot_mallet('u')
time.sleep(0.3 - raise_time)
def rot_tone(self, tone):
self._servo_tone.duty(self._tone_duty[tone])
time.sleep(0.05)
self._servo_tone.deinit()
def rot_mallet(self, state):
self._servo_mallet.duty(self._mallet_duty[state])
def init(self):
self._servo_tone.init()
self._servo_mallet.init()
def deinit(self, servo=None):
if servo is None:
self._servo_tone.deinit()
self._servo_mallet.deinit()
elif servo == 'tone':
self._servo_tone.deinit()
elif servo == 'mallet':
self._servo_mallet.deinit()
def _use_servo(fn):
def inner(self):
self.init()
self.rot_mallet('u')
fn(self)
self.deinit()
return inner
@_use_servo
def morning(self):
self.ring('m')
self.ring('m', move=False)
self.ring('m', move=False)
self.ring('h')
@_use_servo
def finish1(self):
self.ring('m')
@_use_servo
def finish2(self):
self.ring('h')
class PWMOut(object):
"""PWM output."""
def __init__(self, pin, freq=50, duty=0, verbose=False, channel=-1):
if channel in [i for i in range(RMT_MAX_CHAN)]:
self._chanRMT = channel
self._pin = RMT(channel, pin=Pin(pin), clock_div=RMT_CLOCK_DIV)
self.__setRMTDuty(duty)
self._pin.loop(True)
else:
self._chanRMT = -1
self._pin = PWM(Pin(pin))
self._pin.init(freq=freq, duty=duty)
self._verbose = verbose
if self._verbose:
self.__logFrequency()
def deinit(self):
self._pin.deinit()
@property
def duty_percent(self):
""" duty in percent
"""
if self._chanRMT < 0:
return self._pin.duty() / MAX_DUTY * 100
else:
return self._dutyRMT / RMT_DUTY_SCALER
@duty_percent.setter
def duty_percent(self, value):
if self._chanRMT < 0:
self._pin.duty(int(min(max(0, value / 100.0 * MAX_DUTY),
MAX_DUTY)))
else:
self.__setRMTDuty(
min(max(0, value / 100. * RMT_MAX_DUTY), RMT_MAX_DUTY))
@property
def duty(self):
""" duty as raw value
"""
if self._chanRMT < 0:
return self._pin.duty()
else:
return self._dutyRMT
@duty.setter
def duty(self, value):
if self._chanRMT < 0:
self._pin.duty(int(value))
else:
self.__setRMTDuty(value)
@property
def freq_Hz(self):
""" frequency in [Hz]
"""
if self._chanRMT < 0:
return self._pin.freq()
else:
return self._pin.source_freq() / RMT_CLOCK_DIV
@freq_Hz.setter
def freq_Hz(self, value):
if self._chanRMT < 0:
self._pin.freq(value)
else:
if value == 0:
self._pin.loop(False)
else:
self._pin.loop(True)
d2 = int(
(self._pin.source_freq() / RMT_CLOCK_DIV) / value // 2)
self._pin.write_pulses((d2, d2))
if self._verbose:
self.__logFrequency()
@property
def max_duty(self):
if self._chanRMT < 0:
return MAX_DUTY
else:
return RMT_MAX_DUTY
@property
def uses_rmt(self):
return self._chanRMT >= 0
def __logFrequency(self):
print("PWM frequency is {0:.1f} kHz".format(self.freq_Hz / 1000))
def __setRMTDuty(self, value):
self._dutyRMT = int(min(max(1, value), RMT_MAX_DUTY))
self._pin.write_pulses((self._dutyRMT, RMT_MAX_DUTY - self._dutyRMT))
import sys
import utime as time
import machine
from machine import Pin, PWM
import logging
logging.setGlobal(logging.DEBUG)
led = machine.Pin(5, mode=machine.Pin.OUT)
print("Switching off blue led")
led.value(0)
pwm0 = PWM(led) # create PWM object from a pin with blue led
pwm0.freq() # get current frequency
pwm0.freq(50) # set frequency
duty = pwm0.duty() # get current duty cycle
print("Current duty:", duty)
pwm0.duty() # get current duty cycle
print("Setting duty to 200")
pwm0.duty(200) # set duty cycle
for i in range(200):
pwm0.duty(i)
time.sleep_ms(2)
for i in range(200):
pwm0.duty(200 - i)
time.sleep_ms(2)
#pwm2 = PWM(Pin(6), freq=500, duty=512) # create and configure in one go
def stop(self, pin=27):
from machine import Pin, PWM
pwm = PWM(Pin(pin))
pwm.duty(0)
pwm.freq(1)
pwm.deinit()
pin4.irq(handler, trigger=Pin.IRQ_RISING | Pin.IRQ_FALLING)
# initialize PWM
pwm1 = PWM(pin1, timer=0)
pwm2 = PWM(pin2, timer=0)
pwm3 = PWM(pin3, timer=0)
# set frequency
# Note pwm1.freq() == pwm2.freq() since they use the same timer
pwm1.freq(500)
pwm3.freq(500)
# set duty cycle (0 ... 1023)
pwm1.duty(500)
pwm2.duty(500)
pwm3.duty(500)
print("pwm1:", pwm1)
print("pwm2:", pwm2)
print("pwm3:", pwm3)
try:
# go about other business (or just take a nap)
sleep(1000)
finally:
# release PWM circuitry for later reuse
pwm1.deinit()
pwm2.deinit()
# Complete project details at https://RandomNerdTutorials.com # Created by Rui Santos from machine import Pin, ADC, PWM from time import sleep led = Pin(2, Pin.OUT) button = Pin(15, Pin.IN) #Configure ADC for ESP32 pot = ADC(Pin(34)) pot.width(ADC.WIDTH_10BIT) pot.atten(ADC.ATTN_11DB) #Configure ADC for ESP8266 #pot = ADC(0) led_pwm = PWM(Pin(4),5000) while True: button_state = button.value() led.value(button_state) pot_value = pot.read() led_pwm.duty(pot_value) sleep(0.1)
from machine import Pin, PWM led = PWM(Pin(5)) led.freq(10) led.duty(100) #0 es 0% 100% es 1023
def servo_write_angle(pin,angle): pwm=PWM(Pin(pin)) pwm.duty(int(40 + 75 * angle / 180)) pwm.freq(50)
OLED_HEIGHT = 64
OLED_CYAN_TOP = 16
sta_if = network.WLAN( network.STA_IF )
sta_if.active( True )
sta_if.connect( secrets['ssid'], secrets['wpa2'] )
while not sta_if.isconnected():
pass
i2c = I2C( 0, scl=Pin( 18 ), sda=Pin( 19 ), freq=100000 )
oled = ssd1306.SSD1306_I2C( OLED_WIDTH, OLED_HEIGHT, i2c, addr=0x3c )
np = NeoPixel( Pin( 23 ), 1 )
dhts = DHT22( Pin( 16 ) )
rtc = RTC()
if machine.DEEPSLEEP != machine.reset_cause() and \
machine.SOFT_RESET != machine.reset_cause():
update_time()
np[0] = (0, 0, 0)
np.write()
buzz = PWM( Pin( 26 ) )
buzz.freq( 800 )
buzz.duty( 512 )
time.sleep_ms( 200 )
buzz.deinit()
# sends a cycle of light intensities on a triangular curve
def intensityCycle(duration, resolution):
for i in range(0, resolution - 1):
brightness = 1023 / resolution * i
# print(brightness)
pwmLED.duty(round(brightness))
utime.sleep_ms(duration)
for i in range(0, resolution - 1):
brightness = 1023 - 1023 / resolution * i
# print(brightness)
pwmLED.duty(round(brightness))
utime.sleep_ms(duration)
print("Changing the light intensity on the built-in LED using PWM")
print("Program written for the workshop on IoT at the")
print("African Internet Summit 2019")
print("Copyright: U.Raich")
print("Released under the Gnu Public License")
led = Pin(2)
pwmLED = PWM(led)
pwmLED.freq(1000) # PWM at 1 kHz
for i in range(0, 10):
intensityCycle(20, 100)
pwmLED.duty(0)
class Rodas:
freqA = 900
freqB = 900
def __init__(self):
## Frequencia de trabalho do motor
# O valor maximo e 1024
## Os pinos para o Shield ESP s鑼玱 fixos
# Para o motor A, esquerdo, os pinos sao:
# 5 para velocidade e 0 para dire鑾借尗o
self.PwmA = PWM(Pin(5), freq=1000, duty=0)
self.DirA = Pin(0, Pin.OUT)
# Para o motor A, esquerdo, os pinos sao:
# 5 para velocidade e 0 para dire閼剧禈o
self.PwmB = PWM(Pin(4), freq=1000, duty=0)
self.DirB = Pin(2, Pin.OUT)
# Os pinos a seguir foram ocupados
# para controlar a ponte H
# D1 = GPIO 5
# D2 = GPIO 4
# D3 = GPIO 0
# D4 = GPIO 2
def frente(self):
#print("frente")
self.PwmA.duty(1000)
self.PwmB.duty(1000)
self.DirA.off()
self.DirB.off()
def re(self):
#print("re")
self.PwmA.duty(1000)
self.PwmB.duty(1000)
self.DirA.on()
self.DirB.on()
def esquerda(self):
#print("esquerda")
self.PwmA.duty(1000)
self.PwmB.duty(1000)
self.DirA.on()
self.DirB.off()
def direita(self):
#print("direita")
self.PwmA.duty(1000)
self.PwmB.duty(1000)
self.DirA.off()
self.DirB.on()
def parar(self):
#print("parar")
self.PwmA.duty(0)
self.PwmB.duty(0)
self.DirA.off()
self.DirB.off()