Download and display a bmp file

download_ondiskbitmap_example.py

import ssl
import wifi
import socketpool
from displayio import Group, OnDiskBitmap, TileGrid
import adafruit_requests as requests
import board
import storage
import sdcardio
import os

print("Connecting to %s" % os.getenv("CIRCUITPY_WIFI_SSID"))
wifi.radio.connect(os.getenv("CIRCUITPY_WIFI_SSID"), os.getenv("CIRCUITPY_WIFI_PASSWORD"))
print("Connected")
print("My IP address is", wifi.radio.ipv4_address)

socket = socketpool.SocketPool(wifi.radio)
https = requests.Session(socket, ssl.create_default_context())

sd = sdcardio.SDCard(board.SPI(), board.SD_CS)
vfs = storage.VfsFat(sd)
storage.mount(vfs, '/sd')
#print(os.listdir('/sd'))


url = "https://cdn-learn.adafruit.com/assets/assets/000/074/681/original/purple.bmp?1555717198"
# print(url)
response = requests.get(url)
print(f"Downloading: {url}")
with open("/sd/downloaded.bmp", 'wb', ) as f:
    for chunk in response.iter_content(chunk_size=32):
        f.write(chunk)
    print("download complete")
response.close()

main_group = Group()
odb = OnDiskBitmap("/sd/downloaded.bmp")
tg = TileGrid(bitmap=odb, pixel_shader=odb.pixel_shader)
main_group.append(tg)

board.DISPLAY.root_group = main_group

while True:
    pass