class Thermistor:
"""
NTC 模块。也适用于其他的热敏电阻。
:param pin: 掌控板引脚号,如使用P0,pin=0.
:param series_resistor: 与热敏电阻连接的串联电阻器的值。默认是10K电阻。
:param nominal_resistance: 在标称温度下热敏电阻的阻值。
:param nominal_temperature: 在标称电阻值下热敏电阻的温度值(以摄氏度为单位)。默认使用25.0摄氏度。
:param b_coefficient: 热敏电阻的温度系数。
:param high_side: 表示热敏电阻是连接在电阻分压器的高侧还是低侧。默认high_side为True。
"""
def __init__(
self,
pin,
series_resistor=10000.0,
nominal_resistance=10000.0,
nominal_temperature=25.0,
b_coefficient=3935.0,
high_side=True
):
self.adc = ADC(Pin(eval("Pin.P{}".format(pin))))
self.adc.atten(ADC.ATTN_11DB)
self.series_resistor = series_resistor
self.nominal_resistance = nominal_resistance
self.nominal_temperature = nominal_temperature
self.b_coefficient = b_coefficient
self.high_side = high_side
def getTemper(self):
"""
获取温度,读取异常则返回None
:return: 温度,单位摄氏度
"""
try:
if self.high_side:
# Thermistor connected from analog input to high logic level.
reading = self.adc.read_u16() / 64
reading = (1023 * self.series_resistor) / reading
reading -= self.series_resistor
else:
# Thermistor connected from analog input to ground.
reading = self.series_resistor / (65535.0 / self.adc.read_u16() - 1.0)
steinhart = reading / self.nominal_resistance # (R/Ro)
steinhart = math.log(steinhart) # ln(R/Ro)
steinhart /= self.b_coefficient # 1/B * ln(R/Ro)
steinhart += 1.0 / (self.nominal_temperature + 273.15) # + (1/To)
steinhart = 1.0 / steinhart # Invert
steinhart -= 273.15 # convert to C
return steinhart
except:
return None
class Battery(object):
def __init__(self, battery, charging, power=None):
self._battery = ADC(battery)
self._charging = charging
self._power = power
def charging(self):
return self._charging.value()
def power(self):
if self._power:
return self._power.value()
return self._charging.value()
def voltage_mv(self):
# Assumes a 50/50 voltage divider and a 3.3v power supply
raw = self._battery.read_u16()
return (2 * 3300 * raw) // 65535
def level(self):
# This is a trivial battery level estimation approach. It is assumes
# the discharge from 4v to 3.5v is roughly linear and 4v is 100% and
# that 3.5v is 5%. Below 3.5v the voltage will start to drop pretty
# sharply to we will drop from 5% to 0% pretty fast... but we'll
# live with that for now.
mv = self.voltage_mv()
level = ((19 * mv) // 100) - 660
if level > 100:
return 100
if level < 0:
return 0
return level
class Knob(object):
def __init__(self, gpio):
self.gpio = gpio
self.adc = ADC(Pin(gpio))
def value(self):
return 100*self.adc.read_u16()/65535
def _read_adc():
# exit if adc resolution was not set
if not sharp1080.INIT:
return 0
from machine import ADC, Pin
conversion_factor = 3.3 / ((2**sharp1080.ADC_RES) - 1)
# raspberry pico
if sharp1080.INIT == sharp1080.PICO:
adc = ADC(Pin(sharp1080.ADC_PIN))
raw = adc.read_u16()
# esp8266
if sharp1080.INIT == sharp1080.ESP8266:
adc = ADC(0)
raw = adc.read()
# esp32
if sharp1080.INIT == sharp1080.ESP32:
adc = ADC(Pin(sharp1080.ADC_PIN))
adc.atten(ADC.ATTN_11DB)
adc.width(ADC.WIDTH_12BIT)
raw = adc.read()
volt = raw * conversion_factor
if sharp1080.DEBUG: print("adc_read: " + str(volt) + "V")
return volt
def get_light(pin=26):
temp2_sensor = ADC(pin)
light = ADC(pin)
conv_factor = 3.3 / 65535
lux = light.read_u16() * conv_factor / 2.3 * 100
return int(lux)
def get_temperature(pin=27):
temp_sensor = ADC(pin)
conv_factor = 3.3 / 65535
r0 = 100000.0
B = 4275.0
temp = float(temp_sensor.read_u16() * conv_factor)
vol = temp
print(temp_sensor.read_u16())
print(temp)
r = 1023 / temp - 1
r = r0 * r
temp = 1 / (math.log(r / r0) / B + (1 / 298.15)) - 273.15
a = 0.029411764705882353
b = -23.529411764705884
temp2 = a * temp_sensor.read_u16() * conv_factor * 1000 + b
return (temp2, int(vol * 1000))
def getTemperature():
# Get Temperature
temp_sensor = ADC(4)
temperature = temp_sensor.read_u16()
to_volts = 3.3 / 65535
temperature = temperature * to_volts
celcius_degrees = 27 - (temperature - 0.706) / 0.001721
return celcius_degrees
def volt(adc):
if isinstance(adc, ADC):
pass
else:
adc = ADC(int(adc))
# Vref = 3.3v on rpi pico
# 3.3 / 65535 = 5.035477e-05
return adc.read_u16() * 5.035477e-05
def log_voltages(file_name):
adc = ADC(26)
with open(file_name, 'w') as csv:
while True:
voltage = 3.3 * adc.read_u16() / 65535.0
text = '%5.3f' % voltage
print(text)
csv.write(text)
csv.write('\n')
time.sleep(60)
class AnalogIn_Driver(object):
"""Mock driver for build-in ADC."""
def __init__(self, pin):
""" Requires an ADC enabled pin.
"""
self._pin = ADC(pin)
self._data = array.array("I", [0])
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
def readADC(self, chan):
""" Returns error code and A/D value of channel `chan` as tuple; here
only `chan` == 0 is allowed
"""
assert chan == 0, "readADC error: `chan` must be 0"
return self._pin.read_u16()
def update(self):
""" Updates the A/D data for the channel; implemented for compatibility
reasons.
"""
self._data[0] = self._pin.read_u16()
@property
def data(self):
""" Array with A/D data
"""
return self._data
@property
def channelCount(self):
return CHAN_COUNT
@property
def maxValue(self):
return MAX_VALUE
@property
def channelMask(self):
return 0x01
@channelMask.setter
def channelMask(self, value):
pass
class Analog:
def __init__(self, pin, amplifier_gain=1, resistor=0):
self.gain = amplifier_gain
self.resistor = resistor
self.pin = ADC(pin)
def read_voltage(self):
return self.pin.read_u16() * 3.3 / 65535 / self.gain
def read_current(self):
if self.resistor > 0:
return self.read_voltage() / self.resistor
else:
return self.read_voltage()
class AnalogIn(object):
"""Basic analog input."""
def __init__(self, pin):
self._pin = ADC(pin)
def deinit(self):
self._pin = None
@property
def value(self):
return self._pin.read_u16()
@property
def max_adc(self):
return MAX_VALUE
class AnalogueReader:
"""A base class for common analogue read methods.
This class in inherited by classes like Knob and AnalogueInput and does
not need to be used by user scripts.
"""
def __init__(self, pin, samples=DEFAULT_SAMPLES):
self.pin = ADC(Pin(pin))
self.set_samples(samples)
def _sample_adc(self, samples=None):
# Over-samples the ADC and returns the average.
values = []
for _ in range(samples or self._samples):
values.append(self.pin.read_u16())
return round(sum(values) / len(values))
def set_samples(self, samples):
"""Override the default number of sample reads with the given value."""
if not isinstance(samples, int):
raise ValueError(
f"set_samples expects an int value, got: {samples}")
self._samples = samples
def percent(self, samples=None):
"""Return the percentage of the component's current relative range."""
return self._sample_adc(samples) / MAX_UINT16
def range(self, steps=100, samples=None):
"""Return a value (upper bound excluded) chosen by the current voltage value."""
if not isinstance(steps, int):
raise ValueError(f"range expects an int value, got: {steps}")
percent = self.percent(samples)
if int(percent) == 1:
return steps -1
return int(percent * steps)
def choice(self, values, samples=None):
"""Return a value from a list chosen by the current voltage value."""
if not isinstance(values, list):
raise ValueError(f"choice expects a list, got: {values}")
percent = self.percent(samples)
if percent == 1.0:
return values[-1]
return values[int(percent * len(values))]
def main():
freq = 0
i2c = I2C(scl=Pin(5), sda=Pin(4), freq=100000)
adc = ADC(0)
lcd = I2cLcd(i2c, 0x27, 2, 16)
lcd.putstr("starting\nproject")
time.sleep(2)
lcd.clear()
s = socket.socket()
ai = socket.getaddrinfo("0.0.0.0", 80)
addr = ai[0][-1]
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
s.bind(addr)
s.listen(5)
lcd.putstr("Listening:80\n")
'''
while True:
res = s.accept()
client_sock = res[0]
client_addr = res[1]
print("Client address:", client_addr)
lcd.putstr("%s" % client_addr[0])
print("Client socket:", client_sock)
client_stream = client_sock
while True:
data = input()
print("to send data", data)
client_stream.write(data)
client_stream.close()
'''
while True:
conn, addr = s.accept()
print('Connected by', addr)
while True:
lcd.clear()
freq = int(input())
val = adc.read_u16()
lcd.putstr("%s\n%s" % (val, freq))
print('data', val)
try:
conn.sendall(("%s,%s\r\n" % (val, freq)).encode())
except Exception as e:
print('exception', e)
break
time.sleep_ms(20)
class Thermometer:
def __init__(self, pin_id, R0, B, precision = 10):
self.pin = ADC(Pin(pin_id))
self.R0 = R0
self.B = B
self.precision = precision
def analog_to_temp(self, val):
R = (2**self.precision / val - 1.0 )
# print("R", R)
# print("val", val)
R = R*R0
# print("R", R)
# print ("2**self.precision", 2**self.precision)
temperature = 1.0/(math.log(R/R0)/B+1/298.15)-273.15 # Convert to temperature via datasheet
return temperature
def get_temperature(self):
val = self.pin.read_u16()
temp = self.analog_to_temp(val)
return temp
class Pico(object):
def __init__(self):
self.led_pini = Pin(25, Pin.OUT)
self.zamanlayici = Timer()
def sicaklik_sensoru_ayarla(self):
self.sicaklik_sensoru = ADC(4)
def zamanlayiciyi_ayarla(self, frekans, mod, cb):
self.zamanlayici.init(freq=frekans, mode=mod, callback=cb)
def zamanlayiciyi_durdur(self):
self.zamanlayici.deinit()
def led_yaksöndür(self, zamanlayici):
self.led_pini.toggle()
def celcius_oku(self):
#Referans:
#https://github.com/raspberrypi/pico-micropython-examples/blob/master/adc/temperature.py
ham_deger = self.sicaklik_sensoru.read_u16() * 3.3 / (65535)
return 27 - (ham_deger - 0.706) / 0.001721
def getSoilMoisture(name, adc):
# Get data from the moisture sensor
soil_sensor = ADC(adc)
moisture = soil_sensor.read_u16()
display = ""
#min = 14200
#max = 17000
min = 14000
max = 17000
# Calculate the moisture percentage
percent_init = ((moisture - min) * 100) / (max - min)
percent = 100 - abs(percent_init)
# Convert the numerical value into a readable value
if moisture < min:
display = "{}:Wet".format(name)
elif moisture >= min and moisture < max:
display = "{}:Dmp".format(name)
elif moisture >= max:
display = "{}:Dry".format(name)
return [display, percent]
from machine import ADC
import time
sensor_temp = ADC(4)
conversion_factor = 3.3 / (65535)
while True:
reading = sensor_temp.read_u16() * conversion_factor
temperature = 27 - (reading - 0.706)/0.001721
print(temperature)
time.sleep(1)
display.init(buf)
display.set_backlight(
0.8
) # comment out this line if you have a Pico Explorer as it doesn't have a controllable backlight
vsys = ADC(29) # reads the system input voltage
charging = Pin(
24, Pin.IN) # reading GP24 tells us whether or not USB power is connected
conversion_factor = 3 * 3.3 / 65535
full_battery = 4.2 # these are our reference voltages for a full/empty battery, in volts
empty_battery = 2.8 # the values could vary by battery size/manufacturer so you might need to adjust them
while True:
# convert the raw ADC read into a voltage, and then a percentage
voltage = vsys.read_u16() * conversion_factor
percentage = 100 * ((voltage - empty_battery) /
(full_battery - empty_battery))
if percentage > 100:
percentage = 100.00
# draw the battery outline
display.set_pen(0, 0, 0)
display.clear()
display.set_pen(190, 190, 190)
display.rectangle(0, 0, 220, 135)
display.rectangle(220, 40, 20, 55)
display.set_pen(0, 0, 0)
display.rectangle(3, 3, 214, 129)
# draw a green box for the battery level
# Load the raspberry pi logo into the framebuffer (the image is 32x32)
fb = framebuf.FrameBuffer(buffer, 32, 32, framebuf.MONO_HLSB)
# Clear the oled display in case it has junk on it.
oled.fill(0)
# Blit the image from the framebuffer to the oled display
oled.blit(fb, 96, 0)
# Add some text
oled.text("Raspberry Pi", 5, 5)
oled.text("Pico", 5, 15)
# Finally update the oled display so the image & text is displayed
oled.show()
while True:
sleep(5)
temp_sensor = ADC(TEMP_ADC)
temperature = temp_sensor.read_u16()
to_volts = 3.3 / 65535
temperature = temperature * to_volts
celsius_degrees = 27 - (temperature - 0.706) / 0.001721
fahrenheit_degrees = celsius_degrees * 9 / 5 + 32
print(fahrenheit_degrees)
oled.fill(0)
# Blit the image from the framebuffer to the oled display
oled.blit(fb, 96, 0)
oled.text(str(fahrenheit_degrees), 5, 5)
# Start conditions & positions
ball = Ball(32, 16, 3, 3, 1, -1, SCREEN_WIDTH,
SCREEN_HEIGHT) # vx = 2; vx = -2
player = Player(30, SCREEN_HEIGHT - 3, 15, 2, 0, 0)
# Required to calculate dt for first time
tick = time.ticks_ms()
# Execute loop as long as game isnt lost
while not ball.get_game_over():
ntick = time.ticks_ms()
ball.update(
time.ticks_diff(ntick, tick) // 100, player
) # the floor division // rounds the result down to the nearest whole number
tick = ntick
player.x = adc.read_u16() * (SCREEN_WIDTH - 15) / 1023
fbuf.fill(0) # Fill entire framebuf with specific color (0 == black)
ball.draw(fbuf) # Inserts current ball position into frame
player.draw(fbuf) # Inserts current player platform position into frame
disp.block(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT,
dispArr) # Sends current frame to display
time.sleep_ms(50) # Waits for next iteration
# Game is lost...
fbuf.fill(0)
fbuf.text('GAME', 15, 8)
fbuf.text('OVER', 15, 18)
disp.block(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, dispArr)
print('Score: ', ball.get_score()) # Score is sent through UART / USB
from machine import Pin, ADC, PWM
from utime import sleep_ms
adc = ADC(26)
pwm = PWM(Pin(20))
pwm.freq(1000)
while (True):
pwm.duty_u16(adc.read_u16())
sleep_ms(100)
led = Pin(25, Pin.OUT) # external LED on Pi Pico
t = Timer()
temp = ADC(4) # use channel 4 for measuring temperature
conversion_factor = 3.3 / (65536)
def blink(Timer):
led(1)
time.sleep_ms(20) # LED on for 20 milliseconds
led(0)
t.init(period=1000, mode=Timer.PERIODIC, callback = blink)
print('\nThis program will show some information about the StackyPi board')
print('and the usage of some on-board ressources of Raspberry Pi Pico Board\n')
print('The external led blinks ones per second\n')
print('This is a {}'.format(uos.uname().machine))
print('Installed firmware version is {}\n'.format(uos.uname().version))
print('Platform is {}'.format(sys.platform))
print('Micropython version is {}'.format(sys.version))
print('CPU frequency is {:3.0f} MHz'.format(machine.freq()/1e6))
# read value, 0-65535 across voltage range 0.0v - 3.3v
reading = temp.read_u16() * conversion_factor
# The temperature sensor measures the Vbe voltage of a biased bipolar diode, connected to the fifth ADC channel
# Typically, Vbe = 0.706V at 27 degrees C, with a slope of -1.721mV (0.001721) per degree.
intTemp = 27 - (reading - 0.706)/0.001721
print('On-Chip temperature is {:3.1f} °C'.format(intTemp))
# AIO_Test.py
# 類比輸出入信號GPIO測試程式
# OmniXRI Jack, May 2021
from machine import Pin, ADC, PWM # 從machine導入Pin, ADC, PWM硬體參數設定類別
import utime # 導入時間相關函式庫
pwm = PWM(Pin(18)) # 設定LED1為PWM輸出腳
pwm.freq(1000) # 設定PWM頻率為1000 Hz
adc = ADC(2) # 設定連接到ADC2(GP28)，亦可寫成ADC(28)
factor = 3.3 / (65535) # 電壓轉換因子
while True: # 若真則循環
reading = adc.read_u16() # 讀取類比輸入值16bit無號整數
pwm.duty_u16(reading) # 將輸入值轉至PWM工作周期值
vlot = reading * factor # 將輸入值轉成電壓值
print(vlot) # 將輸入電壓值列印至Shell區
utime.sleep(0.1) # 延時0.1秒
from machine import Pin, ADC
from time import sleep
adc = ADC(Pin(26))
while True:
duty = adc.read_u16()
print(duty)
sleep(1)
x = int((WIDTH - 4) / 2)
y = int((HEIGHT - 4) / 2)
oled.text('Pico Pong 2021', 10, 21)
oled.text('by Jerzy Jasonek', 0, 41)
oled.show()
check_level(level)
sleep(2)
################################### Game loop #################################
while not game_over:
check_level(level)
if not start:
player2Y = (Pot2.read_u16())
if player2Y < 1000:
one_player_game = True
led_one_player_game.value(1)
else:
one_player_game = False
led_one_player_game.value(0)
else:
#update player position
if not one_player_game:
player1Y = (Pot.read_u16() * conversion_factor)
player1Y = convert(player1Y, 0, 3.3, 0, 44)
else:
player1Y = y - 10
from machine import Pin, I2C, ADC
from ssd1306 import SSD1306_I2C
import time
i2c = I2C(0, sda=Pin(4), scl=Pin(5))
oled = SSD1306_I2C(128, 32, i2c)
pushButton = Pin(17, Pin.IN, Pin.PULL_UP)
analog = ADC(28)
oled.fill(0)
oled.rect(0, 0, 127, 31, 1)
oled.text("Pico", 5, 22, 1)
oled.show()
while True:
if pushButton.value() == 0:
oled.fill(1)
oled.show()
time.sleep(1)
reading = analog.read_u16() # 0 to 65535
w = int(reading / 512)
n = int(reading / 6553.5)
oled.fill(0)
oled.fill_rect(0, 0, w, 31, 1)
oled.text(str(n), 0, 10, 0)
oled.show()
def raw(adc):
if isinstance(adc, ADC):
pass
else:
adc = ADC(int(adc))
return adc.read_u16()
#https://projects.raspberrypi.org/en/projects/getting-started-with-the-pico/8
from machine import ADC, Pin
import utime
adc = ADC(Pin(27)) #Pin27 = ADC1
while True:
print(adc.read_u16())
utime.sleep(0.5)
[0, 0, 0, 0, 0, 0, 0, .15], #Fa
[0, 0, 0, 0, 0, .1, 0, .25], #Sol
[0, 0, 0, 0, 0, 0, .4, 0], #La
[0, 0, 0, 0, 0, .2, 0, 0], #Si
[0, 0, 0, .05, 0, 0, 0, 0] #Ut
]
elif 18 == version:
keyboard_crosstalk = [ #when I put my finger on key n. <line>, this is the % of parasitic response I can read on each of the keys.
#To calibrate, uncomment the print() line in keyboard_AT42T1110.py, in keyboard.read_analog_keys()
[0, .2, .05, .1, .05, 0, 0, 0], #Do
[0.05, 0, .5, 0, .1, 0, 0, 0], #Re
[0] * 8, #Mi
[0, 0, 0, 0, 0, 0, 0, .1], #Fa
[0, 0, 0, 0, 0, .1, 0, .1], #Sol
[0, 0, 0, 0, 0, 0, .5, 0], #La
[0, 0, 0, 0, 0, .2, 0, 0], #Si
[0, 0, 0, 0, 0, .3, .3, 0] #Ut
]
else:
keyboard_crosstalk = None
midi_rst = Pin("C10", Pin.OUT, value=0)
vbat_ADC = ADC(Pin("B1"))
vusb_ADC = ADC(Pin("B0"))
vbat = lambda: vbat_ADC.read_u16() / 65536 * 3.3 * 2
vusb = lambda: vusb_ADC.read_u16() / 65536 * 3.3 * 2
main_startup_pin = keyboard_instr_pin
#End