How many cycles does function call takes STM32?
Oct 31, 2025 · 3 min read · Short answer: there’s no single number. A function call on STM32 depends on the CPU core (M0/M0+, M3/M4/M33, M7), compiler/optimizations, how many registers must be saved, flash/ SRAM wait-states, and whether the FPU context is involved. But you can ...
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