class SlopeLeader(object):
def __init__(self):
self.adc = ADC(Pin('rINC'))
self._timer = Timer(7, freq=100)
self._buffer = bytearray(10)
def read(self):
self.adc.read_timed(self._buffer, self._timer) # resolution 256
value = sum(self._buffer) // len(self._buffer)
slope = value / 256 # ratio to cover
return slope
def off(self):
#value = self.read()
#print('slope=', value)
return True if self.read() <= 0.1 else False
class Mic:
def __init__(self, mic_pinname, timer_id=6):
self.mic = ADC(mic_pinname)
self.tim = Timer(timer_id, freq=48000)
self.samples = array.array('h', range(4800))
self.normalized_spl = 0.0
def level(self):
samples = self.samples
self.mic.read_timed(samples, self.tim)
ave = sum(samples) / len(samples)
self.normalized_spl = \
min(1.0, sum((v-ave)**2 for v in samples) / len(samples) / 2278619.0)
return self.normalized_spl
def excited(self):
return self.level() > 0.01
class Mic:
def __init__(self, mic_pinname, timer_id=6):
self.mic = ADC(mic_pinname)
self.tim = Timer(timer_id, freq=48000)
self.samples = array.array('h', range(4800))
self.normalized_spl = 0.0
def level(self):
samples = self.samples
self.mic.read_timed(samples, self.tim)
ave = sum(samples) / len(samples)
self.normalized_spl = \
min(1.0, sum((v-ave)**2 for v in samples) / len(samples) / 2278619.0)
return self.normalized_spl
def excited(self):
return self.level() > 0.01
class SpeedLeader(object):
M_MAX = const(20)
SPD_MAX = const(15) # 15 km/h
def __init__(self):
self._adc = ADC(Pin('rSPD'))
self._timer = Timer(6, freq=100)
self._buffer = bytearray(self.M_MAX)
@property
def speed(self):
self._adc.read_timed(self._buffer, self._timer) # resolution 256
value = sum(self._buffer) // len(self._buffer)
speed = value * self.SPD_MAX / 256 #[km/h]
speed = trunc(speed * 10) / 10
#print('ref speed=', speed)
return speed
def off(self):
value = self.speed
return True if value <= 2.0 else False
from pyb import Pin, ADC, Timer, ExtInt
from time import sleep_ms
import array
T = 1 # millisecond
f = 10**3 / T
nb = 100
pinX1 = Pin('X1', Pin.OUT) # Alimentation du circuit RC
pinX2 = Pin('X2') # Tension condensateur
adc = ADC(pinX2) # Activation du CAN
buf = array.array("h", nb * [0x7FFF]) # h = signed short (int 2 octets)
tim = Timer(6, freq=f) # create a timer running at 10Hz
mesures = lambda e: adc.read_timed(buf, tim) # read analog values into buf
ext = ExtInt(Pin('X3'), ExtInt.IRQ_FALLING, Pin.PULL_NONE, mesures)
pinX1.low() # Décharge du condensateur
sleep_ms(1000) # Attendre 2 s
pinX1.high() # Début de la charge
sleep_ms(1000)
ext.disable()
x = [i * 1 / f * 1000 for i in range(nb)]
y = [val for val in buf]
for i in range(len(x)):
if y[i] < (max(y) * 0.37):
tau = x[i]
break
else:
from pyb import Pin, ADC, Timer
import array
f = 1000
N = 100
adc = ADC(Pin('A0')) # Activation du CAN
buf = array.array("h", N * [0x7FFF]) # h = signed short (int 2 octets)
tim = Timer(1, freq=f) # create a timer running at 10Hz
adc.read_timed(buf, tim) # Mesures
# Données
x = [i * 1 / f * 1000 for i in range(N)]
y = [val for val in buf]
for i in range(len(x)):
print(x[i], y[i])
Fiche produit:
---> https://shop.mchobby.be/fr/micropython/1830-pybstick-lite-26-micropython-et-arduino-3232100018303-garatronic.html
MCHobby investit du temps et des ressources pour écrire de la
documentation, du code et des exemples.
Aidez nous à en produire plus en achetant vos produits chez MCHobby.
------------------------------------------------------------------------
History:
09 april 2020 - Dominique - initial code
"""
from pyb import ADC, Timer
from time import sleep
SAMPLE_FREQ = 50 # Smapling time @ 50Hz, so 50 sample per second
buffer = bytearray(200) # collect 200 values
tim = Timer(9, freq=50) # Set the sampling timer
adc = ADC("S26")
# Fill the buffer @ timer frequency. This will take 4 seconds in this case
# This call is blocking
adc.read_timed(buffer, tim)
# print out the collected values
timing = 0.0
for value in buffer:
print("%5.4f : %3i" % (timing, value))
timing += 1 / SAMPLE_FREQ
from pyb import Pin, ADC, Timer
from array import array
f = 500 # Fréquence d'échantillonnage (750 kHz max.)
N = 20 # Nombre de points
buffer = array("h", N*[0xFFFF]) # Tableau de N x 16 bit pour stocker les mesures
# "h" pour signed short (int 2 octets)
adc = ADC(Pin('A0')) # Déclaration du CAN sur la broche A0
tim = Timer(6, freq=f) # Le timer 6 fixe la fréquence d'échantillonnage f
adc.read_timed(buffer, tim) # Lancement des mesures
f = tim.freq()
t = [i*1/f for i in range(N)]
y = [buffer[i] for i in range(N)]
print(t)
print(y)
from pyb import ADC
from pyb import Pin
adc = ADC('X22')
print(adc)
adc.read()
buf = bytearray(100)
adc.read_timed(buf, 500)
from pyb import Pin
pin = Pin('X22', mode=Pin.IN, pull=Pin.PULL_DOWN)
adc = ADC('X22')
print(adc)
# read single sample
val = adc.read()
assert val < 500
# timer for read_timed
tim = pyb.Timer(5, freq=500)
# read into bytearray
buf = bytearray(50)
adc.read_timed(buf, tim)
print(len(buf))
for i in buf:
assert i < 500
# read into arrays with different element sizes
import array
ar = array.array('h', 25 * [0])
adc.read_timed(ar, tim)
print(len(ar))
for i in buf:
assert i < 500
ar = array.array('i', 30 * [0])
adc.read_timed(ar, tim)
print(len(ar))
# Charge d'un condensateur à travers une résistance
# R = 10k et C > 10 nF
from pyb import Pin, ADC, Timer
from time import sleep_ms
import array
f = 500E3 # 500 kHz max
n = 1000
pinE = Pin('A3', Pin.OUT) # Alimentation du circuit RC
adc = ADC(Pin('A2')) # Activation du CAN
u = array.array("h", n * [0x7FFF]) # h = signed short (int 2 octets)
tim = Timer(6, freq=f) # create a timer running at 10Hz
while True:
pinE.on() # Décharge du condensateur
sleep_ms(1000) # Attendre
pinE.off() # Début de la charge
adc.read_timed(u, tim) # Mesures
seuil = u[0] * 0.37
for i in range(n):
if u[i] < seuil:
tau = i / f * 1000 # millisecond
break
C = tau / 10 * 1000 # nF
print(nb_pts, tau, "ms", C)
from pyb import Pin
pin = Pin('X22', mode=Pin.IN, pull=Pin.PULL_DOWN)
adc = ADC('X22')
print(adc)
# read single sample
val = adc.read()
assert val < 500
# timer for read_timed
tim = pyb.Timer(5, freq=500)
# read into bytearray
buf = bytearray(50)
adc.read_timed(buf, tim)
print(len(buf))
for i in buf:
assert i < 500
# read into arrays with different element sizes
import array
ar = array.array('h', 25 * [0])
adc.read_timed(ar, tim)
print(len(ar))
for i in buf:
assert i < 500
ar = array.array('i', 30 * [0])
adc.read_timed(ar, tim)
print(len(ar))
for i in buf:
# Charge d'un condensateur à travers une résistance
# R = 10k et C = 220 nF
from pyb import Pin, ADC, Timer
from time import sleep_ms
from array import array
f = 3000 # max = 750 kHz [84Mhz/4/(12+15) = 778 kHz]
n = 200 # nombre de points
pinE = Pin('A0', Pin.OUT) # A0 en sortie digitale
adc = ADC(Pin('A1')) # CAN sur A1
buffer = array("h", n * [0x7FFF]) # h = signed short (int 2 octets)
tim = Timer(6, freq=f) # Declaration du timer
pinE.on() # Décharge du condensateur
sleep_ms(1000) # Attendre 1 s
pinE.off() # Début de la charge
adc.read_timed(buffer, tim) # Acquisition
# Affichage CSV
f = tim.freq() # Fréquence réelle utilisée par le timer
print("t;u")
print("ms;_")
for i in range(n):
print(i / f * 1E3, ";", buffer[i])
start_time = pyb.millis()
start_time2 = pyb.millis()
#tim = pyb.Timer(4, freq=20) # create a timer running at 10Hz
#buf = bytearray(100) # creat a buffer to store the samples
#adc.read_timed(buf, tim) # sample 100 values, taking 10s
#for val in buf: # loop over all values
#print(val) # print the value out
for a in ('b' , 'B' , 'h', 'H' , 'i' , 'I' , 'l' , 'L' , 'q' , 'Q' , 'f' , 'd'):
#while True:
print("read" + str(adc.read() / 16))
#buf = bytearray(10) #array.array('h') # create a buffer of 100 bytes
buf = array.array(a) # create a buffer of 100 bytes
adc.read_timed(buf, 10) # read analog values into buf at 10Hz
# this will take 10 seconds to finish
print(buf)
for val in buf: # loop over all values
print(val) # print the value out
sys.exit()
start_time = pyb.millis()
while pyb.elapsed_millis(start_time) < 50:
print(adc.read())
while pyb.elapsed_millis(start_time) < 5000 or abs(max_pulse_sensor - min_pulse_sensor) < 100:
pulse_sensor = adc.read()
#print("ADC = %d" % (pulse_sensor))
if pyb.elapsed_millis(start_time2) > 1000:
min_pulse_sensor = pulse_sensor
from pyb import Pin, ADC, Timer
from array import array
from math import log
from linear_regression import linear_reg
from time import sleep_ms
f = 750E3 # max = 750 kHz [84Mhz/4/(12+15) = 778 kHz]
nb = 100 # Nombre de points de mesure
pinE = Pin('A2', Pin.OUT) # Source du circuit RC
adc = ADC(Pin('A3')) # Activation du CAN
buf = array("h", nb * [0x7FFF]) # h = signed short (int 2 octets)
tim = Timer(6, freq=f)
while True:
pinE.on() # Décharge du condensateur E=0
sleep_ms(100) # Attendre 100 ms
pinE.off() # Début de la charge E=Vcc
adc.read_timed(buf, tim) # Lance les mesures
f = tim.freq() # Fréquence réelle utilisée par le timer
x = [i / f * 1E6 for i in range(nb)] # Tableau des fréquence en µs
y = [log(val) for val in buf] # Tableau des ln(u)
a, b = linear_reg(x, y) # Regression linéaire
C = -1 / (a * 10) # Calcul de la capacité
print("C = ", C) # Affichage
sleep_ms(1000)
adct = ADC(16) # Temperature 930 -> 20C
print(adct)
adcv = ADC(17) # Voltage 1500 -> 3.3V
print(adcv)
# read single sample; 2.5V-5V is pass range
val = adcv.read()
assert val > 1000 and val < 2000
# timer for read_timed
tim = Timer(5, freq=500)
# read into bytearray
buf = bytearray(b'\xff' * 50)
adcv.read_timed(buf, tim)
print(len(buf))
for i in buf:
assert i > 50 and i < 150
# read into arrays with different element sizes
import array
arv = array.array('h', 25 * [0x7fff])
adcv.read_timed(arv, tim)
print(len(arv))
for i in arv:
assert i > 1000 and i < 2000
arv = array.array('i', 30 * [-1])
adcv.read_timed(arv, tim)
print(len(arv))
from pyb import Pin, ADC, Timer
from array import array
f = 500 # Fréquence d'échantillonnage (750 kHz max.)
N = 20 # Nombre de points
mesures = array("h",
N * [0xFFFF]) # Tableau de N x 16 bit pour stocker les mesures
# "h" pour signed short (int 2 octets)
adc = ADC(Pin('A0')) # Déclaration du CAN sur la broche A0
tim = Timer(6, freq=f) # Le timer 6 fixe la fréquence d'échantillonnage f
adc.read_timed(mesures, tim) # Lancement des mesures
print(mesures) # Affichage des mesures
