zoe_weather_image.py

import time
from requests import get
import requests
import json
import os
import subprocess
import digitalio
import board
from PIL import Image, ImageDraw, ImageFont
import adafruit_rgb_display.st7789 as st7789


settings = {
    'api_key':'YOUR_KEY',
    'zip_code':'94112',
    'country_code':'us',
    'temp_unit':'imperial'} #unit can be metric, imperial, or kelvin

BASE_URL = "http://api.openweathermap.org/data/2.5/weather?appid={0}&zip={1},{2}&units={3}"

cs_pin = digitalio.DigitalInOut(board.CE0)
dc_pin = digitalio.DigitalInOut(board.D25)
reset_pin = None
 
# Config for display baudrate (default max is 24mhz):
BAUDRATE = 64000000
 
# Setup SPI bus using hardware SPI:
spi = board.SPI()

# Create the ST7789 display:
disp = st7789.ST7789(
    spi,
    cs=cs_pin,
    dc=dc_pin,
    rst=reset_pin,
    baudrate=BAUDRATE,
    width=240,
    height=240,
    x_offset=0,
    y_offset=80,
)
 
# Create blank image for drawing.
# Make sure to create image with mode 'RGB' for full color.
height = disp.width  # we swap height/width to rotate it to landscape!
width = disp.height
image = Image.new("RGB", (width, height))
rotation = 180
# Get drawing object to draw on image.
draw = ImageDraw.Draw(image)

# First define some constants to allow easy resizing of shapes.
padding = 0
top = padding
bottom = height - padding
# Move left to right keeping track of the current x position for drawing shapes.
x = 0
 
# Alternatively load a TTF font.  Make sure the .ttf font file is in the
# same directory as the python script!
# Some other nice fonts to try: http://www.dafont.com/bitmap.php
font = ImageFont.truetype("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf", 48)
 
# Turn on the backlight
backlight = digitalio.DigitalInOut(board.D22)
backlight.switch_to_output()
backlight.value = True

while True:
    y=top
    # Draw a black filled box to clear the image.
    draw.rectangle((0, 0, width, height), outline=0, fill=0)
    
    final_url = BASE_URL.format(settings["api_key"],settings["zip_code"],settings["country_code"],settings["temp_unit"])
    weather_data = get(final_url).json()['weather'][0]['icon']
    image_url = "http://openweathermap.org/img/wn/"+ weather_data+"@2x.png"
    img_data = requests.get(image_url).content
    with open(weather_data+'.png', 'wb') as handler:
        handler.write(img_data)
    image = Image.open(weather_data+'.png')
    
    image_ratio = image.width / image.height
    screen_ratio = width / height
    if screen_ratio < image_ratio:
        scaled_width = image.width * height // image.height
        scaled_height = height
    else:
        scaled_width = width
        scaled_height = image.height * width // image.width
    image = image.resize((scaled_width, scaled_height), Image.BICUBIC)
     
    # Crop and center the image
    x = scaled_width // 2 - width // 2
    y = scaled_height // 2 - height // 2
    image = image.crop((x, y, x + width, y + height))
    
 
    # Get drawing object to draw on image.
    draw = ImageDraw.Draw(image)
    disp.image(image, rotation)
    
    time.sleep(10) #get new data every 10 seconds
    y=top
    # Draw a black filled box to clear the image.
    draw.rectangle((0, 0, width, height), outline=0, fill=0)
     
    final_url = BASE_URL.format(settings["api_key"],settings["zip_code"],settings["country_code"],settings["temp_unit"])
    weather_data = get(final_url).json()['weather'][0]['main']
    temp_data = requests.get(final_url).json()
    temperature = temp_data["main"]["temp"] 
    #print the date for 5 sec
    draw.text((x, y),weather_data, font=font, fill="#FFFFFF")
    y += font.getsize(weather_data)[1]
    draw.text((x, 50),str(temperature), font=font, fill="#FFFFFF")
    # Display image.
    disp.image(image, rotation)
    
    
    time.sleep(10) #get new data every 10 seconds