Hello @wickeLine228
The types u_intXX_t and uintXX_t are both used to represent unsigned integers of a specific size. However, uintXX_t is from the C standard library and u_intXX_t is not part of the standard C library, and its definition varies depending on the platform and compiler being used.
The STM32CubeIDE is based on the C standard library, which is why uint32_t works well. The u_int32_t might not be recognized because it's not included in the standard library used by STM32CubeIDE.
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