Attempting to get a file from my pc via python server into esp32

[mogplus88]

Hi All

I'm trying to set up OTA updates for my ESP32. It's eventually going to be located where it is not easily accessible, and it's a barebones unit with no usb plug, so to update the program on it I'm using OTA updating. I've got this to work (with the help of Kevin Mcaleer, thanks!) reading the updated program file from github, but now I'm trying to get it to read a file from my PC (as there doesn't seem much point for the round trip to github and back again).

I've set up a server using python.server (python3 -m http.server 8080), which works fine in my browser, and curl also works. But I cannot get it to work from within a micropython program. It always returns an error, OSError: [Errno 104] ECONNRESET. This error is issued when the connection is unexpectedly closed by the server, but there doesn't seem to be much information beyond that.

This is the Micropython code. I've tried a few variations but they all return the same error.

import requests x = requests.get('http://localhost:8080/esp-now-rx/main.py') print(x)

I'm stuck here. I don't know enough about http or servers to understand where the problem would be occurring.

All advice gratefully received.

:-\

[Josverl]

I have seen 2 different levels of OTA updates.

1. only the MicroPython files on the file system
2. an entire firmware, including frozen .mpy files, usually excluding the file system

Not clear which you are after.

For 1:

• MicroPython — OTA Updates and GitHub, a match made in heaven
• https://github.com/mkomon/uota

For 2. You'll need to build your own firmwares on an OTA capable board
See :

• https://github.com/glenn20/micropython-esp32-ota
• https://github.com/usedbytes/picowota (not esp32 though)

Also search the awesome MicroPython list for OTA
https://awesome-micropython.com/#ota

[jonnor]

localhost is a hostname that resolves to the same device as you use it on. So when you do that on your ESP32, you are trying to request a file from the ESP32. You must instead use the hostname or IP of your computer - which you can find on your computer.

Note that on a typical WiFi with DHCP the IP might change over time. This lack of stability is one of the reasons to use a public server with a fully-qualified-domain-name like github. You can also set up something like mDNS.