Hi everyone!
Introduction
I'm currently working on a project where I'm creating an independent controller to manage Spotify player using their API. The controller is intended to expose localhost for authorization with a Spotify account. All basic controller functions are to be executed using physical switches, and data will be displayed on a simple TFT display.
What I'm using
Raspberry Pi Pico WH(main controller board)CircuitPythonby Adafruit (Python software)- Various Adafruit libraries (listed in code)
Problem
While writing the software, I encountered a rather strange issue that I don't fully understand.
When sending the second request to the API (using HTTP-GET protocols via the Adafruit_requests lib), the compiler reported a critical memory error. Placing the request.get(...) function within a try-except block only resulted in an empty error message.
Interestingly, this situation only occurs when sending a request to the Spotify API. For example, when I used worldtimeapi as the URL address, everything worked correctly, and I received a response in JSON format.
Here's my code:
import board, timeimport os, jsonimport socketpool, wifi, ipaddressimport adafruit_requests, sslfrom adafruit_httpserver import Server, Request, Response, Redirect, FileResponse, GET, POST, Headersfrom circuitpython_parse import urlencode# Spotify API# ****************************************************************# Variables (...)# Server# ****************************************************************ssid = os.getenv("WIFI_SSID")password = os.getenv("WIFI_PASSWORD")wifi.radio.connect(ssid, password)pool = socketpool.SocketPool(wifi.radio)requests = adafruit_requests.Session(pool, ssl.create_default_context()) # HTTP requestsserver = Server(pool, "/static", debug=True)# Routing# ****************************************************************@server.route("/")def base(request: Request): return FileResponse(request, "index.html", "/public")@server.route('/login')def login(request: Request): scope = # (...) params = # (...) auth_url = f"https://accounts.spotify.com/authorize?{urlencode(params)}" return Redirect(request, auth_url)@server.route('/callback')def callback(request: Request): if 'code' in request.query_params.fields: req_body = # (...) try: TOKEN_URL = "https://accounts.spotify.com/api/token" response = requests.post(TOKEN_URL, data=req_body) # Works fine token_info = response.json() response.close() global access_token, refresh_token, expires_at access_token = token_info['access_token'] refresh_token = token_info['refresh_token'] expires_at = time.time() + token_info['expires_in']) except Exception as e: print("Error-callback:\n", str(e)) return Redirect(request, "/main")@server.route('/main')def main(request: Request): try: req_url = "https://api.spotify.com/v1/me/player/currently-playing" # req_url = "http://worldtimeapi.org/api/timezone/Europe/London" # Test Non-Spotify API req_headers = {'Authorization': f"Bearer {access_token}"} response = requests.get(req_url, headers=req_headers) # ERROR curr_playing = response.json() response.close() except Exception as e: print("Error-main:\n", str(e)) return FileResponse(request, "main.html", "/public")# Main APP# ****************************************************************server.serve_forever(str(wifi.radio.ipv4_address)) # Start localhostwhile True: # Code...I don't understand what is causing this error.
I've tried many methods, but none of them helped.
- At first, I thought it might be a synchronization issue, but importing asyncio isn't possible because for some reason the module doesn't exist.
- It might be due to the limited memory of the RP Pico W (but I'm not sure about that).
- I also found a relatively similar thread here, but it wasn't very helpful for me.
I would appreciate help, advice, suggestions, or tips.Thank you in advance. 🙏🏻