balaji-ganesh / esp32-selfdrivingcar Goto Github PK

• Espressif docs says..

Esptool didn’t receive any byte of data or a successful slip packet. This error usually implies some kind of a hardware issue. This may be because the hardware is not working properly at all, the RX/TX serial lines are not connected, or because there is some problem with resetting into the download mode.

• Tried uploading via earlier worked computers, but no use.

Need

• Currently middleware with FastAPI and python-socketio is being
  • as a server -- for Flask WebApp.
  • as a client -- for ESP32.
• Fewer times, connection to ESP32 is breaking.

Current setup (of ESP32)

• The ESP32 is configured to connect to mobile hotspot.
• Hence, each time it connects, (most possibly)get the different IP address.

Possible issues that raise out (When becomes a client)

• Need to upload the code to ESP32 by updating the assigned IP of computer, in each setup of environment to run/test.

Solutions

• Use a router and assigning static IP addresses to the computer and ESP32.
  • This solves repeated uploading to ESP32.

• Python will be like the middleware between both ESP32 and web app.
• In the next iterations, the middleware can be configured to make some image processing.

• Capture the navigation controls from the Web-app using the navigation buttons set.
• Also try adding feature of sending via keyboard keys.
• Regarding interval... currently go with some less value, later make it dynamic.

Description

Getting the error Error: sent 1002 (protocol error); no close frame received with websockets while running the camera feed from ESP32 to web.

Note

• Not getting this error at all the time, but some times.
• The above error was displayed in middlware's console.

Solutions found

• StackOverflow - WebSocket Closes with Protocol Error 1002
  • Extracted conclusion: Need to change the ESP32 websockets from synchronous to asynchronous. But earlier when using AsyncWebServer as in HashIncludeElectronic's reference, got the issue in bridging. Try once again, with this setup.