Content import gc import json import re import time import buttons import display import mch22 import system import urequests as requests import wifi sample_json = "" # mastadon api response and current selection toots = [] toot_index = 0 # a translation table for common characters that the badge has issues with (str.translate is not supported) char_replacements = {'ä': 'ae', 'ö': 'oe', 'ü': 'ue', 'ß': 'ss', 'Ä': 'Ae', 'Ö': 'Oe', 'Ü': 'Ue'} # some common html entities, since we don't have a full html unescape function in micropython html_entities = { '&': '&', '"': '"', ''': '\'', ' ': ' ', } # font stuff font = 'Roboto_Regular12' font_height = display.getTextHeight("Happy", font) max_text_width = display.width() - 10 line_margin = 3 def wlan_connect(): if not wifi.status(): wifi.connect() display.drawFill(display.WHITE) display.drawText(10, 10, "Connecting to WiFi...", 0x000000, font) display.flush() if not wifi.wait(10): display.drawFill(display.WHITE) display.drawText(10, 10, "Sorry, WiFi connection failed :(", 0x000000, font) display.drawText(10, 25, "Try getting closer to the next Datenklo and", 0x000000, font) display.drawText(10, 40, "avoid blocking the WiFi chip with the battery.", 0x000000, font) display.drawText(10, 65, "Exit with HOME button", 0x000000, font) display.flush() while True: time.sleep(1) else: print("connected!") def draw_splash(): display.drawFill(display.WHITE) display.drawText(10, 10, "Getting #mch2022 toots from chaos.social ...", 0x000000, font) display.flush() def fetch_toots(): r = requests.get("https://chaos.social/api/v1/timelines/tag/mch2022") gc.collect() data = r.json() r.close() return data def button_exit_app(pressed): if pressed: mch22.exit_python() def callback_next_toot(p): if p: switch_toot(toot_index + 1) def callback_prev_toot(p): if p: switch_toot(toot_index - 1) def switch_toot(index): if index >= len(toots): index = 0 if index < 0: index = len(toots) - 1 print(f"toot #{index}") global toot_index toot_index = index print_toot(toots[index]) def print_toot(toot_json): # get content content_html = toot_json['content'] content_plain = simplify_text(content_html) author = toot_json['account']['username'] created = toot_json['created_at'] # author & date display.drawFill(0xFFFFFF) display.drawText(5, 5, f"{toot_index + 1}/{len(toots)}: @{author}, {created}:", 0x000000, font) # print content lines lines = text_to_lines(content_plain) for i, line in enumerate(lines): y = 10 + ((i + 1) * (font_height + line_margin)) display.drawText(5, y, line, 0x000000, font) display.flush() def simplify_text(text): # strip html tags plain = re.sub('<br.*?>', ' ', text) plain = re.sub('<[^<]+?>', '', plain) # replace non-ascii chars (not supported by badge) plain = ''.join(char_replacements.get(c, c) for c in plain) plain = ''.join(c if isascii(c) else '?' for c in plain) # replace common html entities if '&' in plain: for html_entity, replacement in html_entities.items(): plain = plain.replace(html_entity, replacement) return plain def text_to_lines(text): words = text.split() line = '' lines = [] for word in words: line_tmp = line + ' ' + word line_width = display.getTextWidth(line_tmp, font) if line_width > max_text_width: lines.append(line) line = word else: line = line_tmp if (not lines) or (lines[-1] != line): lines.append(line) return lines def isascii(c): return 0 <= ord(c) <= 0x7F def main(debug=False): global toots buttons.attach(buttons.BTN_HOME, button_exit_app) if debug: draw_splash() toots = json.loads(sample_json) else: wlan_connect() draw_splash() toots = fetch_toots() if not toots: display.drawFill(display.WHITE) display.drawText(10, 10, "No toots received :'(", 0x000000, font) display.flush() else: print_toot(toots[0]) buttons.attach(buttons.BTN_A, callback_next_toot) buttons.attach(buttons.BTN_UP, callback_prev_toot) buttons.attach(buttons.BTN_DOWN, callback_next_toot) buttons.attach(buttons.BTN_LEFT, callback_prev_toot) buttons.attach(buttons.BTN_RIGHT, callback_next_toot) while True: time.sleep(1) main(debug=False)