from machine import Pin, ADC, PWM, I2C
from time import sleep
from neopixel import NeoPixel 
from onewire import OneWire
import ssd1306 
from ssd1306 import SSD1306_I2C

#Bouton
BP1=Pin(25,Pin.IN)
BP2=Pin(34,Pin.IN)
BP3=Pin(39,Pin.IN)
BP4=Pin(36,Pin.IN)

#Led
LED1=Pin(23,Pin.OUT)
LED2=Pin(19,Pin.OUT)
LED3=Pin(18,Pin.OUT)
LED4=Pin(2,Pin.OUT)

#Potentiometre
POT1=ADC(Pin(35))
POT2=ADC(Pin(33))

POT1.atten(ADC.ATTN_11DB)
POT2.atten(ADC.ATTN_11DB)


#neopixel led
np=NeoPixel(Pin(26),16)

#Photo-elec
LDR=ADC(Pin(32))
LDR.atten(ADC.ATTN_11DB)             

#oled
i2c = I2C(0, scl=Pin(22), sda=Pin(21),freq=400000)  
display = ssd1306.SSD1306_I2C(128, 64, i2c) 

class Vumetre:

  def __init__(self,PBinf,PVal,PBsup):
    self.inf=PBinf
    self.val=PVal
    self.sup=PBsup

  def Cal(self):
    A=int(((self.val-self.inf)/(self.sup-self.inf))*16)
    return(A)

  def vu(self):
      display.fill(0) 
      for i in range (0,16):
          np[i]=(0,0,0)

      for i in range (0,self.Cal()):
        if i>=0 and i<4:
          np[i]=(0,0,200)
        elif i>=4 and i<8:
          np[i]=(0,200,0)
        elif i>=8 and i<12:
          np[i]=(200,200,0)
        elif i>=12 and i<=16:
          np[i]=(200,0,0)
      display.text(str(self.val),10,10,1)
      display.show()
      np.write()
      
    
      np.write()

print("Move the upper potentiometer and see its 12-bit value on the screen.")
print("Press BPA (green) to stop.")
E1=Vumetre(0,POT1.read(),4095)

while not BP1.value():
  E1.val=POT1.read()
  E1.vu()
  sleep(0.2)

   







  

main.py

diagram.json

#MicroPython SSD1306 OLED driver, I2C and SPI interfaces created by Adafruit

import time
import framebuf

# register definitions
SET_CONTRAST        = const(0x81)
SET_ENTIRE_ON       = const(0xa4)
SET_NORM_INV        = const(0xa6)
SET_DISP            = const(0xae)
SET_MEM_ADDR        = const(0x20)
SET_COL_ADDR        = const(0x21)
SET_PAGE_ADDR       = const(0x22)
SET_DISP_START_LINE = const(0x40)
SET_SEG_REMAP       = const(0xa0)
SET_MUX_RATIO       = const(0xa8)
SET_COM_OUT_DIR     = const(0xc0)
SET_DISP_OFFSET     = const(0xd3)
SET_COM_PIN_CFG     = const(0xda)
SET_DISP_CLK_DIV    = const(0xd5)
SET_PRECHARGE       = const(0xd9)
SET_VCOM_DESEL      = const(0xdb)
SET_CHARGE_PUMP     = const(0x8d)


class SSD1306:
    def __init__(self, width, height, external_vcc):
        self.width = width
        self.height = height
        self.external_vcc = external_vcc
        self.pages = self.height // 8
        # Note the subclass must initialize self.framebuf to a framebuffer.
        # This is necessary because the underlying data buffer is different
        # between I2C and SPI implementations (I2C needs an extra byte).
        self.poweron()
        self.init_display()

    def init_display(self):
        for cmd in (
            SET_DISP | 0x00, # off
            # address setting
            SET_MEM_ADDR, 0x00, # horizontal
            # resolution and layout
            SET_DISP_START_LINE | 0x00,
            SET_SEG_REMAP | 0x01, # column addr 127 mapped to SEG0
            SET_MUX_RATIO, self.height - 1,
            SET_COM_OUT_DIR | 0x08, # scan from COM[N] to COM0
            SET_DISP_OFFSET, 0x00,
            SET_COM_PIN_CFG, 0x02 if self.height == 32 else 0x12,
            # timing and driving scheme
            SET_DISP_CLK_DIV, 0x80,
            SET_PRECHARGE, 0x22 if self.external_vcc else 0xf1,
            SET_VCOM_DESEL, 0x30, # 0.83*Vcc
            # display
            SET_CONTRAST, 0xff, # maximum
            SET_ENTIRE_ON, # output follows RAM contents
            SET_NORM_INV, # not inverted
            # charge pump
            SET_CHARGE_PUMP, 0x10 if self.external_vcc else 0x14,
            SET_DISP | 0x01): # on
            self.write_cmd(cmd)
        self.fill(0)
        self.show()

    def poweroff(self):
        self.write_cmd(SET_DISP | 0x00)

    def contrast(self, contrast):
        self.write_cmd(SET_CONTRAST)
        self.write_cmd(contrast)

    def invert(self, invert):
        self.write_cmd(SET_NORM_INV | (invert & 1))

    def show(self):
        x0 = 0
        x1 = self.width - 1
        if self.width == 64:
            # displays with width of 64 pixels are shifted by 32
            x0 += 32
            x1 += 32
        self.write_cmd(SET_COL_ADDR)
        self.write_cmd(x0)
        self.write_cmd(x1)
        self.write_cmd(SET_PAGE_ADDR)
        self.write_cmd(0)
        self.write_cmd(self.pages - 1)
        self.write_framebuf()

    def fill(self, col):
        self.framebuf.fill(col)

    def pixel(self, x, y, col):
        self.framebuf.pixel(x, y, col)

    def scroll(self, dx, dy):
        self.framebuf.scroll(dx, dy)

    def text(self, string, x, y, col=1):
        self.framebuf.text(string, x, y, col)


class SSD1306_I2C(SSD1306):
    def __init__(self, width, height, i2c, addr=0x3c, external_vcc=False):
        self.i2c = i2c
        self.addr = addr
        self.temp = bytearray(2)
        # Add an extra byte to the data buffer to hold an I2C data/command byte
        # to use hardware-compatible I2C transactions.  A memoryview of the
        # buffer is used to mask this byte from the framebuffer operations
        # (without a major memory hit as memoryview doesn't copy to a separate
        # buffer).
        self.buffer = bytearray(((height // 8) * width) + 1)
        self.buffer[0] = 0x40  # Set first byte of data buffer to Co=0, D/C=1
        self.framebuf = framebuf.FrameBuffer1(memoryview(self.buffer)[1:], width, height)
        super().__init__(width, height, external_vcc)

    def write_cmd(self, cmd):
        self.temp[0] = 0x80 # Co=1, D/C#=0
        self.temp[1] = cmd
        self.i2c.writeto(self.addr, self.temp)

    def write_framebuf(self):
        # Blast out the frame buffer using a single I2C transaction to support
        # hardware I2C interfaces.
        self.i2c.writeto(self.addr, self.buffer)

    def poweron(self):
        pass


class SSD1306_SPI(SSD1306):
    def __init__(self, width, height, spi, dc, res, cs, external_vcc=False):
        self.rate = 10 * 1024 * 1024
        dc.init(dc.OUT, value=0)
        res.init(res.OUT, value=0)
        cs.init(cs.OUT, value=1)
        self.spi = spi
        self.dc = dc
        self.res = res
        self.cs = cs
        self.buffer = bytearray((height // 8) * width)
        self.framebuf = framebuf.FrameBuffer1(self.buffer, width, height)
        super().__init__(width, height, external_vcc)

    def write_cmd(self, cmd):
        self.spi.init(baudrate=self.rate, polarity=0, phase=0)
        self.cs.high()
        self.dc.low()
        self.cs.low()
        self.spi.write(bytearray([cmd]))
        self.cs.high()

    def write_framebuf(self):
        self.spi.init(baudrate=self.rate, polarity=0, phase=0)
        self.cs.high()
        self.dc.high()
        self.cs.low()
        self.spi.write(self.buffer)
        self.cs.high()

    def poweron(self):
        self.res.high()
        time.sleep_ms(1)
        self.res.low()
        time.sleep_ms(10)
        self.res.high()

ssd1306.py

import time
from machine import Pin, PWM
import onewire

class TemperatureControl:
    def __init__(self, sensor_in, sensor_out, pin_relay, pin_heat, pwm_freq, kp1):
        """
        Class constructor

        Args:

            pin_dht_in (dht.DHT22): The inner DHT22 sensor object
            pin_dht_out (dht.DHT22): The outer DHT22 sensor object
            pin_relay (int): The pin to which the relay is connected
            pin_heat (int): The pin for the PWM signal applied to heating transistor
            pwm_freq (int): The choice for PWM signal frequency (typical 5 Hz)
            kp1 (float): 
        """
        self.temp_sensor_in = sensor_in
        self.temp_sensor_out = sensor_out
        self.pin_relay = Pin(pin_relay, mode=Pin.OUT)
        self.pin_heat = pin_heat
        self.pwm = PWM(Pin(pin_heat))
        self.pwm.freq(pwm_freq)
        self.kp1 = kp1

    def control_temp_ext(self, temperature, t_consigne):
        """
        Controls the external temperature based on the current temperature and setpoint.

        Args:
            temperature (list of float): A list containing the current temperature(s) from the sensor.
            t_consigne (float): The desired temperature setpoint.

        Returns:
            tuple: A tuple containing the PWM duty cycle (int) and angle (int).
        """
        if temperature[0] < t_consigne:
            b = int(1023 - (((t_consigne - temperature[0]) * self.kp1) / t_consigne * 1023))
            if b < 0:
                return 0, 0
            elif b > 1023:
                return 1023, 0
            else:
                return b, 0
        elif temperature[0] >= t_consigne:
            if temperature[1] < t_consigne:
                c = int((temperature[0] - t_consigne) / temperature[0] * 90)
                if c > 90:
                    return 1023, 90
                else:
                    return 1023, c  
            else:
                return 1023, 0

    def heat(self, rc):
        """
        Activates the heating element and relay based on the PWM duty cycle.

        Args:
            rc (int): The PWM duty cycle for heating.
        """
        self.pwm.duty(rc)
        if rc == 1023:
            self.pin_relay.on()
        else:
            self.pin_relay.off()

    def get_temp(self):
        """
        Retrieves the temperature(s) from the DHT22 sensors.

        Returns:
            list of float: A list of temperatures or None if no sensors are found.
        """
        temperatures = []
        self.temp_sensor_in.measure() 
        temperatures[0] = self.temp_sensor_in.temperature 
        self.temp_sensor_out.measure() 
        temperatures[1] = self.temp_sensor_out.temperature 
        return temperatures

