main.py

from machine import Pin, I2C
import time
import utime
from pico_i2c_lcd import I2cLcd
from dht import DHT11, InvalidChecksum, InvalidPulseCount

I2C_ADDR     = 0x27
I2C_NUM_ROWS = 4
I2C_NUM_COLS = 20

i2c = I2C(0, sda=Pin(0), scl=Pin(1), freq=400000)
lcd = I2cLcd(i2c, I2C_ADDR, I2C_NUM_ROWS, I2C_NUM_COLS)

pin = Pin(27, Pin.OUT, Pin.IN)
sensor = DHT11(pin)

arrow_up = bytearray([0, 4, 14, 31, 4, 4, 4, 0])
arrow_down = bytearray([0, 4, 4, 4, 31, 14, 4, 0])
x = bytearray([0,27,14,4,14,27,0,0])
o = bytearray([6,9,9,6,0,0,0,0])

lcd.custom_char(0, arrow_up)
lcd.custom_char(1, arrow_down)
lcd.custom_char(2, x)
lcd.custom_char(3, o)

button_up = Pin(16, Pin.IN, Pin.PULL_UP)
button_down = Pin(19, Pin.IN, Pin.PULL_UP)
button_esc = Pin(15, Pin.IN, Pin.PULL_UP)
button_enter = Pin(18, Pin.IN, Pin.PULL_UP)

menu_page = 0
max_page = 3

bluzzer = Pin(3, Pin.OUT, value=1)

def display_menu(page):
    lcd.clear()
    if page == 0:
        lcd.move_to(0,0)
        lcd.putstr("[1] Temperatura    <")
        lcd.move_to(0,1)
        lcd.putstr("[2] Czytnik MicroSD")
        lcd.move_to(0,2)
        lcd.putstr("--------------------")
        lcd.move_to(0,3)
        lcd.putstr("[") 
        lcd.putchar(chr(1))
        lcd.putstr("] next    prev [")
        lcd.putchar(chr(0))
        lcd.putstr("]")
    elif page == 1:
        lcd.move_to(0,0)
        lcd.putstr("[2] Czytnik MicroSD<") 
        lcd.move_to(0,1)
        lcd.putstr("[3] Jasnosc") 
        lcd.move_to(0,2)
        lcd.putstr("--------------------")
        lcd.move_to(0,3)
        lcd.putstr("[") 
        lcd.putchar(chr(1))
        lcd.putstr("] next    prev [")
        lcd.putchar(chr(0))
        lcd.putstr("]")
    elif page == 2:
        lcd.move_to(0,0)
        lcd.putstr("[3] Jasnosc        <") 
        lcd.move_to(0,1)
        lcd.putstr("[4] Ustawienia") 
        lcd.move_to(0,2)
        lcd.putstr("--------------------")
        lcd.move_to(0,3)
        lcd.putstr("[") 
        lcd.putchar(chr(1))
        lcd.putstr("] next    prev [")
        lcd.putchar(chr(0))
        lcd.putstr("]")
    elif page == 3:
        lcd.move_to(0,0)
        lcd.putstr("[4] Ustawienia     <") 
        lcd.move_to(0,1)
        lcd.putstr("ZenMini v1") 
        lcd.move_to(0,2)
        lcd.putstr("--------------------")
        lcd.move_to(0,3)
        lcd.putstr("[") 
        lcd.putchar(chr(1))
        lcd.putstr("] next    prev [")
        lcd.putchar(chr(0))
        lcd.putstr("]")
        
import time
from machine import Pin

def display_page_temp():
    lcd.clear()
    green = Pin(11, Pin.OUT)
    red = Pin(12, Pin.OUT)

    MIN_DELAY = 10
    last_read_time = 0

    while True:
        if time.time() - last_read_time >= MIN_DELAY:
            try:
                sensor.measure()
                last_read_time = time.time()

                green.on()

                lcd.clear()
                lcd.move_to(0,0)
                lcd.putstr("Temperatura: {}C".format(sensor.temperature))
                lcd.move_to(0,1)
                lcd.putstr("Wilgotnosc: {}%".format(sensor.humidity))
                lcd.move_to(0,2)
                lcd.putstr("--------------------")
                lcd.move_to(0,3)
                lcd.putstr("[")
                lcd.putchar(chr(2))
                lcd.putstr("] exit")

                time.sleep(1)
                green.off()
                
            except (InvalidPulseCount, InvalidChecksum):
                green.off()
                red.on()
                lcd.clear()
                lcd.move_to(0,1)
                lcd.putstr("Trwa pobieranie")
                lcd.move_to(0,2)
                lcd.putstr("informacji poczekaj.")
                time.sleep(1)
                red.off()

        if button_esc.value() == 0:
            bluzzer.low()
            utime.sleep_us(1000)
            bluzzer.high()
            time.sleep(0.3)
            return


led = Pin("LED", Pin.OUT)
led.on()
display_menu(menu_page)

led_pins = [13,12,11]
leds = [Pin(pin, Pin.OUT) for pin in led_pins]

def led_test():
    for led in leds:
        led.on()
        time.sleep(0.5)
        led.off()
        time.sleep(0.5)
        
    for led in leds:
        led.on()
    time.sleep(0.5)
    for led in leds:
        led.off()
        
led_test()

while True:
    if button_down.value() == 0:
        menu_page += 1
        bluzzer.low()
        utime.sleep_us(1000)
        bluzzer.high()
        if menu_page > max_page:
            menu_page = 0
        display_menu(menu_page)
        time.sleep(0.3)

    if button_up.value() == 0:
        menu_page -= 1
        bluzzer.low()
        utime.sleep_us(1000)
        bluzzer.high()
        if menu_page < 0:
            menu_page = max_page
        display_menu(menu_page)
        time.sleep(0.3)
        
    if button_enter.value() == 0:
        if menu_page == 0:
            bluzzer.low()
            utime.sleep_us(1000)
            bluzzer.high()
            menu_page = 20
            display_page_temp()
            menu_page = 0
            display_menu(menu_page)
            time.sleep(0.3)
    
    if button_esc.value() == 0:
        if menu_page == 20:
            bluzzer.low()
            utime.sleep_us(1000)
            bluzzer.high()
            display_menu(0)
            menu_page = 0
            time.sleep(0.3)
    
    time.sleep(0.05)