EInkNewsViewer

NewsViewer.py

import network
import urequests as requests
import machine
import os
import random
import time
import inky_frame
from picographics import PicoGraphics, DISPLAY_INKY_FRAME_7 as DISPLAY
graphics = PicoGraphics(DISPLAY)
import ntptime  # To get the current date and time from an NTP server
from jpegdec import JPEG
from jpegdec import JPEG_SCALE_FULL
import gc

# Wi-Fi credentials
SSID = ''
PASSWORD = ''

# List of image URLs with 'DATE' as a placeholder for the date
urls = [
    "https://d2dr22b2lm4tvw.cloudfront.net/taiw_tmt/DATE/front-page-medium.jpg", # The Merit Times
    "https://d2dr22b2lm4tvw.cloudfront.net/chi_pd/DATE/front-page-medium.jpg",  # People's Daily
    "https://d2dr22b2lm4tvw.cloudfront.net/nj_jj/DATE/front-page-medium.jpg", # Jersey Journal
    "https://d2dr22b2lm4tvw.cloudfront.net/ca_lat/DATE/front-page-medium.jpg", # Los Angeles Times
    "https://d2dr22b2lm4tvw.cloudfront.net/ca_sfc/DATE/front-page-medium.jpg", # San Francisco Chronicle
    "https://d2dr22b2lm4tvw.cloudfront.net/ca_lat/DATE/front-page-medium.jpg", # LA Times
    "https://d2dr22b2lm4tvw.cloudfront.net/mi_dn/DATE/front-page-medium.jpg", # Detroit News
    "https://d2dr22b2lm4tvw.cloudfront.net/nv_sun/DATE/front-page-medium.jpg",  # Las Vegas Sun
    "https://d2dr22b2lm4tvw.cloudfront.net/wsj/DATE/front-page-medium.jpg", # Wall Street Journal
    "https://d2dr22b2lm4tvw.cloudfront.net/usat/DATE/front-page-medium.jpg", # USA Today
    "https://d2dr22b2lm4tvw.cloudfront.net/irl_it/DATE/front-page-medium.jpg", # The Irish Times
    "https://d2dr22b2lm4tvw.cloudfront.net/ger_faz/DATE/front-page-medium.jpg", # Frankfurter Allgemeine Zeitung
    "https://d2dr22b2lm4tvw.cloudfront.net/ger_aa/DATE/front-page-medium.jpg", # Augsburger Allgemeine
    "https://d2dr22b2lm4tvw.cloudfront.net/uk_mail/DATE/front-page-medium.jpg", # Daily Mail
    "https://d2dr22b2lm4tvw.cloudfront.net/ind_nie/DATE/front-page-medium.jpg", # The New Indian Express
    "https://d2dr22b2lm4tvw.cloudfront.net/skor_did/DATE/front-page-medium.jpg", # The Dong-a Ilbo
    "https://d2dr22b2lm4tvw.cloudfront.net/taiw_tmt/DATE/front-page-medium.jpg" #  The Merit Times
]


# Connect to Wi-Fi
def connect_wifi():
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    if not wlan.isconnected():
        print('Connecting to Wi-Fi...')
        wlan.connect(SSID, PASSWORD)
        while not wlan.isconnected():
            pass
    print('Connected to Wi-Fi:', wlan.ifconfig())


# Get the current date in yyyy-mm-dd format using NTP time
def get_current_date():
    ntptime.settime()  # Sync time with NTP server
    # Get the current time in seconds since the epoch
    current_time = time.time()
    # Subtract 24 hours (in seconds) - to make sure we have newspapers across timezones
    one_day_ago = current_time - (24 * 60 * 60)
    # Convert the time in seconds to a local time tuple
    tm = time.localtime(one_day_ago)
    return "{:04d}-{:02d}-{:02d}".format(tm[0], tm[1], tm[2])

# Download an image from the given URL and save it to the SD card
def download_image(url, file_path):
    print(f"Downloading image from {url}")
    response = requests.get(url)
    if response.status_code == 200:
        # Write the image data to the file 
        with open(file_path, 'wb') as file:
            while True:
                # Read in 512-byte chunks
                chunk = response.raw.read(512)
                if not chunk:
                    break
                file.write(chunk)
        print(f"Image saved to {file_path}")
    else:
        print(f"Failed to download image. Status code: {response.status_code}")

    response.close()

# Render image on the InkyFrame
def display_image_on_inky(image_path):
    graphics.set_pen(1) # WHITE
    graphics.clear()
    j = JPEG(graphics)

    j.open_file(image_path)
    #j.decode()
    j.decode(150, 0, JPEG_SCALE_FULL, dither=True)
    graphics.update()
    print(f"Displayed {image_path} on InkyFrame.")

# Main function to run the tasks
def downloadAndRenderImage():
    try:
        # Connect to Wi-Fi
        connect_wifi()

        # Get current date
        current_date = get_current_date()

        # Pick a random URL and replace the 'DATE' placeholder
        selected_url = random.choice(urls).replace('DATE', current_date)
        
        # Define image path on SD card
        sd_file_path = '/downloaded_image.jpg'

        gc.collect()

        # Download the image
        download_image(selected_url, sd_file_path)

        gc.collect()

        # Display the image on the InkyFrame
        display_image_on_inky(sd_file_path)

        # Disconnect Wi-Fi (optional)
        network.WLAN(network.STA_IF).active(False)
    
    except Exception as e:
        print(f"Error: {e}")

# Run the main function
while True:
    downloadAndRenderImage()
    # Sleep 
    print("Going to sleep...")
    inky_frame.sleep_for(30)  # this is in minutes