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nodemcu / nodemcu-firmware

Lua based interactive firmware for ESP8266, ESP8285 and ESP32
https://nodemcu.readthedocs.io
MIT License
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Stack size problem #303

Closed 4refr0nt closed 8 years ago

4refr0nt commented 9 years ago

I wrote a module 'nkBMP180.lua' in the 2.5 kb and only 108 lines. When I load it my test: require 'nkBMP180.lua ", I get the message:

dofile('test_BMP180.lua') error loading module 'nkBMP180' from file 'nkBMP180.lua':

" not enough memory"

This message indicates a stack overflow ( see http://lua-users.org) This is not a problem heap, the stack size is a problem. It is necessary to increase the size of the stack in the following assemblies nodeMCU.

cal101 commented 9 years ago

Moin,

thank you for esplorer! It's a helpful tool! Can you show us the lua file in question? The error message does not indicate a stack error, but a heap error. The stack size can't be increased easily if at all. AFAIS the standard stack upper limit is used 0x3fffffff and currently no lower limit is set which will result in reboots if memory is trashed - typically the SDK times list - and the watchdog timer kicks in. So what we need for stability is less stack usage, not more. If you show your example in the esp8266 forum more people could discuss the matter.

Carsten

TerryE commented 8 years ago

The current dev issue addresses this.