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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@DrAzzy
the board py file indicates 5450 JSVARs - how much ram does it have? I think you can probably go significantly higher....
Then here:
else ifdef STM32F429IDISCOVERY
EMBEDDED=1
USE_GRAPHICS=1
DEFINES += -DUSE_USB_OTG_FS=1
BOARD=STM32F429IDISCOVERY
STLIB=STM32F429_439xx
PRECOMPILED_OBJS+=$(ROOT)/targetlibs/stm32f4/lib/startup_stm32f429_439xx.o
OPTIMIZEFLAGS+=-O3
you'll probably want to add USE_NET=1 and... whatever other libraries it's missing, since IIRC it's got enough flash to include everything and the kitchen sink...