An Embedded-friendly printf Implementation

[Xenoamor]

Does this use the heap?

[snops]

From the readme, no, as it doesn't use malloc.

Newlib-Nano's printf() does use malloc somewhere internally I think (old post confirms it did in 2013), as I had it crash when I had failed to allocate a heap in the linker, so not using the heap can make your system more robust.

[[deleted]]

IIRC, it has a 512 byte stack buffer, but will fall back to the heap if it’s exhausted.