def experiment(starting_value, button_pin, sensor_pin, led_pin, blue, red,
green):
button = machine.Pin(button_pin, machine.Pin.IN) #define button pin
adc33 = ADC(machine.Pin(sensor_pin)) #define sensor pin
adc33.atten(ADC.ATTN_6DB) #define adc
dac26 = DAC(machine.Pin(led_pin)) #define DAC
dac26.write(starting_value) #adjust the intensity of the LED
data = []
i = 0
counter = 0
while not count_time(button_pin):
print("here!!")
if button.value() == 1:
color("green", blue, red,
green) #if the experiment runs neopixel gives green color
if counter < 5:
create_data_file(starting_value, button_pin, sensor_pin,
led_pin, blue, red, green,
counter) #create new data file
counter += 1
color("purple", blue, red, green)
color("white", blue, red, green)
time.sleep(5)
color("no", blue, red, green)
#Take the of the measurments every 1,2 seconds
sum = 0
for i in range(120):
if button.value() == 1:
break
sum = sum + adc33.read()
time.sleep(0.01)
average = sum / 12000
class ODSensor:
# frequency and pins may need to be changed
def __init__(self,LEDPin, sensorPin): #25,39. 26,36.
self.DAC_MAX = 255
self.DAC_Vmax = 3.15
self.DAC_Vmin = 0.09
self.led = DAC(Pin(25), bits=8)
self.sensor = ADC(Pin(39)) #Green
#self.sensor.atten(ADC.ATTN_11DB)
self.sensor.width(ADC.WIDTH_10BIT)
# return a single measurement
def measure(self, intensity):
self.led.write(intensity)
data = []
#get 120 measurements
for j in range(120):
data.append(self.sensor.read())
data.sort() #sort data increasing
sum_middle = sum(data[30:90]) #find sum of middle numbers
avg = sum_middle / 60 #find average of middle numbers
return avg
def __init__(self):
self.coils = [pins.motor_1, pins.motor_2, pins.motor_3, pins.motor_4]
self.vref_12 = DAC(pins.motor_vref_a)
self.vref_34 = DAC(pins.motor_vref_b)
self.sequence = [[1, 0, 0, 0], [1, 1, 0, 0], [0, 1, 0, 0],
[0, 0, 1, 0], [0, 0, 1, 1], [0, 0, 0, 1]]
def sound(frequency_Hz, duration):
dac1 = DAC(Pin(25))
dac2 = DAC(Pin(26))
# create a buffer containing a sine-wave
buf = bytearray(256)
for i in range(len(buf)):
buf[i] = 128 + int(127 * math.sin(2 * math.pi * i / len(buf)))
dacOut = dac2.write #spped optimization
l = len(buf) #spped optimization
lm1 = (l - 1) * l
fs = 91839
numsamples = fs * duration
factor = int(frequency_Hz * lm1 / fs)
index = 0
for n in range(numsamples):
dacOut(buf[index >> 8])
index = index + factor
if (index >= lm1):
index = index = 0
def confService(self):
self.powerPin = Pin('P8', mode=Pin.OUT)
self.adc = ADC()
self.adc.vref(1058)
self.vBiasDAC = DAC('P22')
self.vBiasDAC.write(0.135) # approximately 0.5 V
self.Battery = self.adc.channel(pin='P14', attn = ADC.ATTN_11DB)
class Speak:
def __init__(self):
# init dac
self.dac = DAC(Pin(25))
# init params
self.__volume = 8
def set_volume(self, volume):
if (volume <= 10) and (volume >= 0):
self.__volume = 11 - volume
else:
print('the volume must be in 0 to 10')
def play_music(self, filename, rate):
delay_interval = int(1000000 / rate)
last_data = 0
f = open(filename, 'r')
if self.__volume != 11:
while True:
data = f.read(4)
if data == '':
for i in range(int(last_data / self.__volume), 0, -1):
self.dac.write(i)
time.sleep_ms(2)
f.close()
return
else:
data = int(data.strip())
self.dac.write(int(data / self.__volume))
time.sleep_us(delay_interval)
last_data = data
class BatteryService(object):
def __init__(self):
self.powerPin = 0
self.adc = 0
self.Battery = 0
self.vBiasDAC = 0
def confService(self):
self.powerPin = Pin('P8', mode=Pin.OUT)
self.adc = ADC()
self.adc.vref(1058)
self.vBiasDAC = DAC('P22')
self.vBiasDAC.write(0.135) # approximately 0.5 V
self.Battery = self.adc.channel(pin='P14', attn = ADC.ATTN_11DB)
def getData(self):
self.powerPin(1)
time.sleep(0.002)
batt = self.Battery.voltage()
collectMemory()
self.powerPin(0)
return batt
def connect(self):
self.confService()
def create_data_file(starting_value, button_pin, sensor_pin, led_pin, blue,
red, green, counter):
button = machine.Pin(button_pin, machine.Pin.IN) #define button pin
adc33 = ADC(machine.Pin(sensor_pin)) #define sensor pin
adc33.atten(ADC.ATTN_6DB) #define adc
dac26 = DAC(machine.Pin(led_pin)) #define DAC
dac26.write(starting_value) #adjust the intensity of the LED
data = []
i = 0
f = open('data' + str(counter), 'w')
while True:
time.sleep(1)
#Take the average of the measurments every 1,2 seconds
sum = 0
for i in range(12000):
if button.value() == 1:
break
sum = sum + adc33.read()
time.sleep(0.01)
average = sum / 12000
data.append(average)
f.write("%s\n" % average)
print("\n")
print(average)
if button.value() == 1: #button is pressed again
color("blue", blue, red, green)
time.sleep(1)
break
i = i + 1
f.close()
class A_Pin(D_Pin):
def __init__(self, pin):
#self.pin = pin
self.dac = None
self.adc = None
if pin in [25, 26]:
self.dac = DAC(Pin(pin))
if pin in [32, 33]:
self.adc = ADC(Pin(pin))
self.adc.atten(ADC.ATTN_11DB)
self.adc.width(ADC.WIDTH_10BIT)
super().__init__(pin)
def write_analog(self, value):
if self.pin not in [25, 26]:
# print("This pin feature is not supported")
super().write_analog(value)
else:
self.dac.write(value)
def read_analog(self):
if self.adc != None:
return self.adc.read()
else:
print('This Pin does not support ADC')
return None
def udefault():
#tipo1=1
#tipo2=2
maxx = 1
puntos = 90
presicion = 4
amplitud = 16
f = 5
phi = 0
print("Default. Procesando...")
#print("holi")
func1 = ondas.onda(maxx, puntos, presicion, amplitud, f, phi, 2)
func2 = ondas.onda(maxx, puntos, presicion, amplitud, f, phi, 1)
for i in range(len(func1)):
print("{", func1[i], "}", "{", func2[i], "}")
func1[i] = 128 + round(func1[i])
func2[i] = 128 + round(func2[i])
gc.collect()
dac1 = DAC(Pin(25, Pin.OUT))
dac2 = DAC(Pin(26, Pin.OUT))
try:
plotdac.pltdac(func1, func2, dac1, dac2)
except Exception as e:
print(e)
def __init__(self,LEDPin, sensorPin): #25,39. 26,36.
self.DAC_MAX = 255
self.DAC_Vmax = 3.15
self.DAC_Vmin = 0.09
self.led = DAC(Pin(25), bits=8)
self.sensor = ADC(Pin(39)) #Green
#self.sensor.atten(ADC.ATTN_11DB)
self.sensor.width(ADC.WIDTH_10BIT)
def __init__(self, pin):
#self.pin = pin
self.dac = None
self.adc = None
if pin in [25, 26]:
self.dac = DAC(Pin(pin))
if pin in [32, 33]:
self.adc = ADC(Pin(pin))
self.adc.atten(ADC.ATTN_11DB)
self.adc.width(ADC.WIDTH_10BIT)
super().__init__(pin)
def signal_generator(pin=25, buffer_size=100, freq=.1):
# create a buffer containing a sine-wave
buf = bytearray(buffer_size)
for i in range(len(buf)):
buf[i] = 128 + int(127 * math.sin(2 * math.pi * i / len(buf)))
# output the sine-wave at 400Hz
p = Pin(pin, Pin.OUT)
dac = DAC(p)
while True:
for i in buf:
dac.write(i)
time.sleep(freq)
def play(filename, pin):
try:
p = Pin(pin, Pin.OUT)
dac = DAC(p)
except Exception as e:
return str(e)
f = wave.open(filename, 'r')
total_frames = f.getnframes()
framerate = f.getframerate()
for position in range(0, total_frames, framerate):
f.setpos(position)
# dac.write_timed(f.readframes(framerate), framerate)
dac.write(f.readframes(framerate))
sleep_ms(1000)
def main():
pkt_tx_queue = []
def audio_frame_ready(data):
pkt_tx_queue.append(data)
lora_ctl = lora.LoRaController()
spk = speaker.Speaker(DAC('P22'))
adc = ADC()
apin = adc.channel(pin='P13', attn=ADC.ATTN_11DB)
uphone = microphone.Microphone(apin, audio_frame_ready)
tlk_btn = talk_button.TalkButton(uphone)
print('Started ...')
flash(0x007f00) # green
while True:
Timer.sleep_us(1000)
# Handle the RX packets
# TODO: refactor to use callback mechanism.
while True:
data = lora_ctl.recv()
if data:
spk.enque(data)
else:
break
# Handle the TX queue
# TODO: refactor to use Python synchronized Queue.
while pkt_tx_queue:
data = pkt_tx_queue.pop(0)
print('.')
lora_ctl.send(data)
def __init__(self, host='0.0.0.0', port=5000, backlog=5, timeout=20000):
self.host = host
self.port = port
self.backlog = backlog
self.timeout = timeout
self.pulse_data = [0]*500
self.pulse_height = 0
self.pulse_T = 0
self.pulse_form = 0
self.pulse_height_old = self.pulse_height
self.pulse_T_old = self.pulse_T
self.pulse_form_old = self.pulse_form
self.generating = False
self.led = Pin(LED_PIN,Pin.OUT)
self.dac = DAC(Pin(DAC_PIN))
def test():
buf = bytearray(100)
dac = DAC(Pin(25, Pin.OUT))
for i in range(len(buf)):
buf[i] = 128 + int(127 * math.sin(2 * math.pi * i / len(buf)))
#print(1 "{",buf[i],"}")
#dac.write(buf[i])
test_count=0
flag= False
while flag==False:
for i in range(len(buf)):
print(1, "{",buf[i],"}")
dac.write(buf[i])
time.sleep(0.1)
test_count=test_count+1
if test_count==9000:
flag=True
print("end 1")
def experiment(starting_value, button_pin, sensor_pin, led_pin):
button = machine.Pin(button_pin, machine.Pin.IN) #define button pin
adc33 = ADC(machine.Pin(sensor_pin)) #define sensor pin
adc33.atten(ADC.ATTN_11DB) #define adc
dac26 = DAC(machine.Pin(led_pin)) #define DAC
dac26.write(starting_value) #adjust the intensity of the LED
data = []
i = 0
while True:
if button.value() == 1:
f = open('data', 'w')
while True:
time.sleep(0.1)
data.append(adc33.read())
f.write("%s\n" % adc33.read()) #
print(data[i - 1])
if button.value() == 1:
time.sleep(1)
break
i = i + 1
f.close()
def confService(self, atributes):
self.powerPin = Pin('P8', mode=Pin.OUT)
self.adc = ADC()
self.adc.vref(1058)
self.vBiasDAC = DAC('P22')
self.vBiasDAC.write(0.135) # approximately 0.5 V
self.panel = self.adc.channel(pin='P13', attn=ADC.ATTN_11DB)
self.errorLogService = atributes['errorLogService']
self.lock = atributes['lock']
if ('mode' in atributes) and ('samplingFrequency' in atributes):
if not str(atributes['samplingFrequency']).isdigit() or atributes[
'samplingFrequency'] < 0: #Comprobar si es un numero (isdigit) y si es negativo
self.errorLogService.regError(
self.serviceID, -9) #Incorrect AtributeValue Error
else:
self.samplingFrequency = atributes['samplingFrequency']
if not str(atributes['mode']).isdigit() or atributes[
'mode'] < 0: #Comprobar si es un numero (isdigit) y si es negativo
self.errorLogService.regError(
self.serviceID, -9) #Incorrect AtributeValue Error
else:
self.mode = atributes['mode']
else:
self.errorLogService.regError(self.serviceID, -2) #ConfFile Error
def audio_loopback():
def handle_audio(data):
spk.enque(data)
int_mode = False
spk = speaker.Speaker(DAC('P22'), int_mode=int_mode, debug=False)
adc = ADC()
apin = adc.channel(pin='P13', attn=ADC.ATTN_11DB)
uphone = microphone.Microphone(apin, handle_audio, int_mode=int_mode)
tlk_btn = talk_button.TalkButton(uphone)
print('Audio playpack ...')
flash(0x000010) # Dark blue
while True:
if int_mode:
Timer.sleep_us(1000000)
else:
uphone.loop()
spk.loop()
class Stepper:
def __init__(self):
self.coils = [pins.motor_1, pins.motor_2, pins.motor_3, pins.motor_4]
self.vref_12 = DAC(pins.motor_vref_a)
self.vref_34 = DAC(pins.motor_vref_b)
self.sequence = [[1, 0, 0, 0], [1, 1, 0, 0], [0, 1, 0, 0],
[0, 0, 1, 0], [0, 0, 1, 1], [0, 0, 0, 1]]
def activate(self, index):
values = self.sequence[index]
for i in range(4):
self.coils[i].on() if values[i] else self.coils[i].off()
def step(self):
self.vref_12.write(30)
self.vref_34.write(30)
for i in range(len(self.sequence)):
self.activate(i)
sleep_us(10000)
self.vref_12.write(0)
self.vref_34.write(0)
def dac_write(self, val):
id = int(str(self)[4:-1]) #unsafe!
self = DAC(Pin(id)).write(val)
from machine import Pin, DAC
from time import sleep
dac = DAC(Pin(26))
print("Running a triangular wave form with a frequency of ~ 1 Hz on pin 26")
while True:
dac.write(0)
sleep(2)
dac.write(255)
sleep(2)
DAC_MAX = 255
DAC_Vmax = 3.15
DAC_Vmin = 0.09 # Not used!
DAC_QUANTUM = DAC_Vmax / DAC_MAX
look_up_ADC = []
# Initialize ADC
adc = ADC(Pin(ADC_PIN_NO))
adc.atten(ADC.ATTN_11DB)
adc.width(ADC.WIDTH_10BIT) # was 10
# Initialize DAC
dac = DAC(Pin(DAC_PIN_NO), bits=8)
# Measure
adc_read = []
for i in range(0, DAC_MAX+1):
print('Samples acquired: ' + str(i) + '/' + str(DAC_MAX))
dac.write(i)
utime.sleep_ms(ADC_DELAY)
raw_read = []
for i in range(1, NUM_SAMPLES+1):
raw_read.append(adc.read())
utime.sleep_ms(DAC_DELAY)
adc_read.append(round(sum(raw_read)/NUM_SAMPLES))
# Print result
#print(adc_read)
from machine import DAC, Pin dac = DAC(Pin(25)) dac.write(128)
# f = 329Hz
# fs = 32.9kHz
import math
from machine import DAC
from machine import Pin
dac1 = DAC(Pin(25))
dac2 = DAC(Pin(26))
# create a buffer containing a sine-wave
buf = bytearray(100)
for i in range(len(buf)):
buf[i] = 128 + int(127 * math.sin(2 * math.pi * i / len(buf)))
while 1:
for i in range(len(buf)):
dac2.write(buf[i])
from machine import DAC, Pin da1 = DAC(Pin(26, Pin.OUT), bits=8) value = 2 da1.write(int(value * 255 / 3.3))
from machine import DAC, Pin import utime da = DAC(Pin(26)) da.write(0)
'''
Send the value 0..256 to the DAC and read the analogue value
back on the ADC
Copyright (c) U. Raich 2020
This program is part of the course on IoT at
the University of Cape Coast, Ghana
'''
from machine import Pin, ADC, DAC
from time import sleep_ms
adc = ADC(Pin(36)) # create ADC object on ADC pin
adc.atten(ADC.ATTN_11DB)
dac = DAC(Pin(26))
file = open("linearity.dat", "w")
print(
"Send values from 0 ..255 to DAC and read the signal level back on the ADC"
)
print("The ADC values are saved in the file 'linearity.dat'")
for i in range(256):
# send the value to the DAC and wait for 50 ms to stabilize
# then read back the signal level on the DAC
dac.write(i)
sleep_ms(50)
file.write("{:d}\n".format(adc.read()))
for i in range(255):
dac.write(254 - i)
sleep_ms(50)
file.write("{:d}\n".format(adc.read()))
file.close()
def pltdac(func1, func2, dac1, dac2):
test_count = 0
flag = False
print("ok dac")
while flag == False:
for i in range(len(func1)):
#print("{",func1[i],"}", "->","{",func2[i],"}")
dac1.write(func1[i])
dac2.write(func2[i])
time.sleep(0.1)
test_count = test_count + 1
if test_count == 9000:
flag = True
if __name__ == "__main__":
print("Modulo two dac")
dac1 = DAC(Pin(25, Pin.OUT))
dac2 = DAC(Pin(26, Pin.OUT))
func1 = bytearray(100)
func2 = bytearray(100)
for i in range(len(func1)):
func1[i] = 128 + int(127 * math.sin(2 * math.pi * i / len(func1)))
func2[i] = 128 + int(127 * math.cos(2 * math.pi * i / len(func1)))
print("ploteando")
pltdac(func1, func2, dac1, dac2)
else:
print("Modulo two dac importado")
