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    BSEC 2.0.6.1 - Cortex-M33F binary size of libalgobsec.a

    BSEC 2.0.6.1 - Cortex-M33F binary size of libalgobsec.a

    knieriem
    Member

    Hi,

    looking at the binary sizes of libalgobsec.a, compiled for different architectures using GCC, I noticed that the size for Cortex_M33F (49453 B) is notably larger than the size for the comparable Cortex_M4F (27841). Both architectures support an FPU, and similar instruction sets, from what I can see on Wikipedia and in the  ARM architectures and processors forum; so I would expect similar compact code.

    In case of the M4F, the size increase, in comparison to the non-FPU version, is only some hundred bytes, in case of the M33F it is around 12 KiB:

    Cortex_M33    27337
    Cortex_M33F 49453
    Cortex_M4       27225
    Cortex_M4F     27841

    Is there a difference in GCC's compiler options (like, a different optimization choice) or some other conditions,  that explain the binary size increase on M33F?

    10 REPLIES 10

    BSTRobin
    Community Moderator
    Community Moderator

    Hi knieriem,

    BSEC2.2.0.0 was released on official website https://www.bosch-sensortec.com/software-tools/software/bme688-software/, 

    Cortex-M33F library was updated.

     

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