main.py

import requests
import logging
from logging.handlers import RotatingFileHandler
import sys
from time import sleep
from datetime import datetime
from luma.led_matrix.device import max7219
from luma.core.interface.serial import spi, noop
from luma.core.render import canvas
from pont import get_ferry_ETD
from rain import get_rain
import RPi.GPIO as GPIO

# input lat & long from address here
LAT = 52.353681668987726
LNG = 4.92548286993842
UPDATE_INTERVAL = 60 * 2  # Refresh temp & ETD every 2 minutes
DISPLAY_INTERVAL = 1      # Update every second
CYCLE_TIME = 5            # show every cycle 5 seconds
HEAVY = 2.5
MOTION_SENSOR_PIN = 25  # GPIO pin number for the motion sensor
MOTION_INTERVAL = 2 * 60  # amount of time to activate the display after motion detected


# Initialize the LED matrix
def init_matrix():
    serial = spi(port=0, device=0, gpio=noop())
    device = max7219(serial, cascaded=4, block_orientation=-90, brightness=1)
    device.contrast(0)
    return device


def main():
    logging.basicConfig(level=logging.INFO, format='%(asctime)s | %(levelname)s : %(message)s', handlers=[logging.handlers.RotatingFileHandler('/home/pi/python/led-it-rain/log/buien.log', maxBytes=2e6, backupCount=1), logging.StreamHandler(sys.stdout)])
    logging.info('Started')

    device = init_matrix()
    GPIO.setmode(GPIO.BCM)
    GPIO.setup(MOTION_SENSOR_PIN, GPIO.IN)
    last_update_time = None
    last_motion_time = datetime.now()
    last_motion_state = True

    try:
        while True:
            current_time = datetime.now()

            # log only when motion state changes, always update time
            current_motion_state = GPIO.input(MOTION_SENSOR_PIN)
            if current_motion_state != last_motion_state:
                last_motion_state = current_motion_state
                if current_motion_state:
                    logging.info('Motion detected')
            if current_motion_state:
                last_motion_time = datetime.now()

            if not last_motion_time or (current_time - last_motion_time).total_seconds() \
                    < MOTION_INTERVAL:
                if not last_update_time or \
                        (current_time - last_update_time).total_seconds() \
                        > UPDATE_INTERVAL:

                    # get ferry ETD
                    if 7 <= current_time.hour <= 9 and current_time.weekday() < 5: # or True:
                        ETD = get_ferry_ETD()
                    else:
                        ETD = None

                    # get weather data
                    temp = get_temp(LAT, LNG)
                    rain = get_rain(LAT, LNG)
                    last_update_time = current_time

                device.show()
                update_display(device, temp, ETD, rain)
                sleep(DISPLAY_INTERVAL)
            else:
                # Clear the display outside the specified time window
                device.hide()

                # check sensor again in 0.5 seconds
                sleep(0.5)


    except KeyboardInterrupt:
        pass
    finally:
        # Clear the display when exiting the script
        GPIO.cleanup()
        with canvas(device) as draw:
            device.hide()
        logging.info('Stopped weatherdisplay')

def update_display(device, temp, ETD, rain):
    with canvas(device) as draw:

        if ETD is None or int(datetime.now().second / CYCLE_TIME) % 2 == 0:
            #draw weather

            if rain is not None:
                for xpos, level in enumerate(rain):
                    draw.line((xpos, 8-level, xpos, 8), fill="white")

            # draw temp
            if temp is not None:
                if len(temp) == 1:
                    draw_digit(temp, draw, 27)
                elif len(temp) == 2:
                    draw_digit(temp[0], draw, 25)
                    draw_digit(temp[1], draw, 29)
                else: # double digit freezing -- show min min
                    draw_digit('-', draw, 25)
                    draw_digit('-', draw, 29)

        else:

            if ETD is not None:
                now = datetime.now()
                diff = ETD - now
                minutes, seconds = divmod(abs(diff.total_seconds()), 60)
                time_remaining = "{:02d}:{:02d}".format(int(minutes), int(seconds))
                offset = 7
                draw_digit(time_remaining[0], draw, offset)
                draw_digit(time_remaining[1], draw, offset+4)
                draw_digit(time_remaining[2], draw, offset+8) # this is the colon, only 3 wide
                draw_digit(time_remaining[3], draw, offset+10)
                draw_digit(time_remaining[4], draw, offset+14)


def get_temp(lat, lng):
    # pings openwheather API to get current temparature
    # see also https://openweathermap.org/current

    #return '-13'

    key = '78efb78287a0d947d2bf4726b4bb6f60'
    url = f'https://api.openweathermap.org/data/2.5/weather?lat={lat}&lon={lng}&appid={key}&units=metric'

    try:
        r = requests.get(url)
    except Exception as e:
        logging.error(f'Could not connect to openwheather: {e}')
        return None

    temp = str(round(r.json()['main']['temp']))
    logging.info(f'Retrieved temp data from openweather')

    return temp

def draw_digit(digit, draw, offset=0):
    # prints a digit of width 3 and height 8 with offset [offset] to [draw]

    if digit == '0':
        draw.line((offset, 0, offset+2, 0), fill=255)       # links-rechts boven
        draw.line((offset, 7, offset+2, 7), fill=255)       # links-rechts onder
        draw.line((offset, 0, offset, 7), fill=255)         # links onder-boven
        draw.line((offset+2, 0, offset+2, 7), fill=255)     # rechts onder-boven

    if digit == '1':
        draw.line((offset+2, 0, offset+2, 7), fill=255)     # rechts onder-boven

    if digit == '2':
        draw.line((offset, 0, offset+2, 0), fill=255)       # links-rechts boven
        draw.line((offset, 7, offset+2, 7), fill=255)       # links-rechts onder
        draw.line((offset, 3, offset+2, 3), fill=255)       # links-rechts mid
        draw.line((offset, 3, offset, 7), fill=255)         # links mid-onder
        draw.line((offset+2, 0, offset+2, 3), fill=255)     # rechts mid-boven

    if digit == '3':
        draw.line((offset+2, 0, offset+2, 7), fill=255)     # rechts onder-boven
        draw.line((offset, 0, offset+2, 0), fill=255)       # links-rechts boven
        draw.line((offset, 7, offset+2, 7), fill=255)       # links-rechts onder
        draw.line((offset, 3, offset+2, 3), fill=255)       # links-rechts mid

    if digit == '4':
        draw.line((offset, 3, offset+2, 3), fill=255)       # links-rechts mid
        draw.line((offset+2, 0, offset+2, 7), fill=255)     # rechts onder-boven
        draw.line((offset, 0, offset, 3), fill=255)         # links mid-boven

    if digit == '5':
        draw.line((offset, 0, offset+2, 0), fill=255)       # links-rechts boven
        draw.line((offset, 7, offset+2, 7), fill=255)       # links-rechts onder
        draw.line((offset, 3, offset+2, 3), fill=255)       # links-rechts mid
        draw.line((offset, 0, offset, 3), fill=255)         # links mid-boven
        draw.line((offset+2, 3, offset+2, 7), fill=255)     # rechts mid-onder

    if digit == '6':
        draw.line((offset, 0, offset+2, 0), fill=255)       # links-rechts boven
        draw.line((offset, 7, offset+2, 7), fill=255)       # links-rechts onder
        draw.line((offset, 3, offset+2, 3), fill=255)       # links-rechts mid
        draw.line((offset+2, 3, offset+2, 7), fill=255)     # rechts mid-onder
        draw.line((offset, 0, offset, 7), fill=255)         # links onder-boven

    if digit == '7':
        draw.line((offset+2, 0, offset+2, 7), fill=255)     # rechts onder-boven
        draw.line((offset, 0, offset+2, 0), fill=255)       # links-rechts boven

    if digit == '8':
        draw.line((offset, 0, offset+2, 0), fill=255)       # links-rechts boven
        draw.line((offset, 7, offset+2, 7), fill=255)       # links-rechts onder
        draw.line((offset, 0, offset, 7), fill=255)         # links onder-boven
        draw.line((offset+2, 0, offset+2, 7), fill=255)     # rechts onder-boven
        draw.line((offset, 3, offset+2, 3), fill=255)       # links-rechts mid

    if digit == '9':
        draw.line((offset, 0, offset+2, 0), fill=255)       # links-rechts boven
        draw.line((offset, 7, offset+2, 7), fill=255)       # links-rechts onder
        draw.line((offset, 3, offset+2, 3), fill=255)       # links-rechts mid
        draw.line((offset+2, 0, offset+2, 7), fill=255)     # rechts onder-boven
        draw.line((offset, 0, offset, 3), fill=255)         # links mid-boven

    if digit == '-':
        draw.line((offset+1, 3, offset+2, 3), fill=255)       # links-rechts mid

    if digit == ':':
        draw.line((offset, 2, offset, 2), fill=255)       # links-rechts mid
        draw.line((offset, 4, offset, 4), fill=255)       # links-rechts mid

    return draw


if __name__ == "__main__":
    main()