print("TEMPERATURE SENSOR PROJECT")
print("date:4/12/2023")
print("By:MASBA")
print("ID: 51225223082")
print("Course:BEET (SE)")


import machine
import onewire
import ds18x20
import time
from machine import Pin, SoftI2C
import SSD1306

# Define the pins for the temperature sensor, LEDs, display, and buzzer
sensor_pin = machine.Pin(5)  # Temperature sensor pin
red_led_pin = machine.Pin(2, machine.Pin.OUT)
blue_led_pin = machine.Pin(14, machine.Pin.OUT)
green_led_pin = machine.Pin(15, machine.Pin.OUT)
buzzer_pin = machine.Pin(12, machine.Pin.OUT)  

#Pin declaration
i2c_oled= SoftI2C(scl=Pin(22), sda= Pin(21))
oled_width =128
oled_height =64

#Lets create OLED as an OBJECT
oled= SSD1306.SSD1306_I2C(width=oled_width, height= oled_height,i2c= i2c_oled)


#Initialize the buzzer
buzzer = machine.Pin(buzzer_pin, machine.Pin.OUT)

#the onewire object
ow = onewire.OneWire(sensor_pin)

#DS18B20 object
temp_sensor = ds18x20.DS18X20(ow)

#DS18B20 sensors
devices = temp_sensor.scan()

# Define a function to generate a sound using the buzzer
def buzz(pitch, duration):
    period = 1.0 / pitch
    delay = period / 2
    cycles = int(duration * pitch)
    for i in range(cycles):
        buzzer.on()
        time.sleep(delay)
        buzzer.off()
        time.sleep(delay)

while True:
    # Get temperature readings
    temp_sensor.convert_temp()
    time.sleep_ms(750)  
    for device in devices:
        temp = temp_sensor.read_temp(device)
        print("Temperature:", temp, "C")

        # Control LEDs based on temperature 
        if temp > 80:
            red_led_pin.on()
            blue_led_pin.off()
            green_led_pin.off()

            # Activate buzzer and display warning 
            buzz(500, 1)
            oled.fill(1)
            oled.text("  WARNING!", 1,10,0)
            oled.text("  HIGH TEMP", 1,20,0)
            oled.show()
        elif temp < 20:
            red_led_pin.off()
            blue_led_pin.off()
            green_led_pin.on()

            # Activate buzzer and display low temperature
            buzz(300, 0.5)  
            oled.fill(1)
            oled.text("   ATTENTION!", 1,10,0)
            oled.text("   LOW TEMP", 1,20,0)
            oled.show()
        elif 21 < temp < 79:
            red_led_pin.off()
            blue_led_pin.on()
            green_led_pin.off()

            # Deactivate buzzer and clear the display
            buzzer.off()
            oled.fill(1)
            oled.text("   Normal TEMP", 1,10,0)
            oled.show()

    time.sleep(5)