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In this document it's stated that STM32H5 devices implements the FPv5 floating-point extensions.From there, how do I know the proper flags to pass to gcc to enable the FPU? -mfpu=fpv5-sp-d16 -mfpu=fpv5-d16other ? 
The documentation of these specific MCU do not show the CCRAM in the memory map.From my understanding this is Cortex-M4 related...https://github.com/ObKo/stm32-cmake/issues/134#issuecomment-651631813
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