M5Atom Linking Problem

entrusc

Hi all,

I just successfully uploaded one of the examples onto my new M5Atom, after I changed the upload speed to 1500000. Now I wanted to proceed to make the unit into an MQTT button, but there seem to be a problem with the Arduino WIFI library together with the M5Atom library. I'm getting this error from the linker:

Linking .pio\build\pico32\firmware.elf
.pio\build\pico32\lib731\libFastLED_ID126.a(FastLED.cpp.o): In function `atexit':
d:\Coding\C\m5atom/.pio\libdeps\pico32\FastLED_ID126/FastLED.cpp:236: multiple definition of `atexit'
C:\users\florian\.platformio\packages\framework-arduinoespressif32\tools\sdk\lib\libc_nano.a(lib_a-atexit.o):/Users/ivan/e/newlib_xtensa-2.2.0-bin/newlib_xtensa-2.2.0/xtensa-esp32-elf/newlib/libc/stdlib/../../../.././newlib/libc/stdlib/atexit.c:64: first defined here

My assumption is that the M5Nano library somehow has its own atexit implementation and therefore the linker is confused when it finds a second definition in the default espressif framework. I'm using platformio to build.

Any help is highly appreciated.

Grey

Exact same issue here, specifically when using IotWebConf (example here). Haven't been able to narrow it down any further yet.

entrusc

@Grey good to see that I'm not the only one having that issue. For now I switched to just using Micropython which works fine. Still it would be nice to also be able to deploy C programs to the Atom.