ESP 8266: MemoryError: memory allocation failed, allocating xxx bytes - Githubissues

pythings / Drivers

Some drivers for MicroPython

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ESP 8266: MemoryError: memory allocation failed, allocating xxx bytes #21

Open ndinev opened 5 months ago

ndinev commented 5 months ago

I am trying to run the example on

MicroPython v1.21.0 on 2023-10-05; ESP module with ESP8266
gc.mem_free()
32736

when trying to start example I am getting MemoryError: memory allocation failed, allocating 234 bytes

Any help to get this working on ESP will be appreciated

sarusso commented 5 months ago

Hi @ndinev,

it't very unlikely that you will be able tu run this driver as-is on an ES8266, due to its very limited memory. If you can, switch to an ESP32.

Otherwise, here are a few things you can try:

Remove any extra functionalities you don't need (to reduce the code size)
Shorten all variable and function names (to reduce the code size)
- Freeze (compile) the code as module (https://forum.micropython.org/viewtopic.php?t=4510)
- Include and compile the code directly in the MicroPython firmware (https://docs.micropython.org/en/latest/reference/packages.html#freezing-packages)

In any case there will be a strong limit on the content you can access, since the driver loads the entire response in memory as well. This could be solved implementing a "streaming" mode, though.