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TM4C1294NCPDT: It does not make floating-point arithmetic in TI enet_s2e project Demo

user6092104
Prodigy 220 points
Part Number: TM4C1294NCPDT
Other Parts Discussed in Thread: EK-TM4C1294XL

Hi, TI E2E teams,

I used the EK-TM4C1294XL TM4C1294 Connected LaunchPad Board to do experiment, I reference the www.ti.com/.../spma072.pdf , I import the enet_s2e project in CCS, I want to use it to do some experiment because it has FreeRTOS and lwip stack.

I add some floating-point operations in the project,  but I find the floating-point operations code would be skipped when I debug in project,  as below,

so I enable the FPU, but it is the same, when I debug the code step by step, the floating-point operation code is skipped directly,

I have found many documents, but the issue is not solved, so I take the issue in TI E2E support forums for help.

I am looking for your responds as soon as possible.

Regards,

eric

  • 0
    TI__Guru*** 134805 points

    Hello,

    What you are likely seeing is the compiler is optimizing out the fTest variable as it is not used by any part of the problem for an output. It will see it being set and not used and then optimize it out. Try turning off optimizations, or using the variable for something meaningful.

  • 0 in reply to Ralph Jacobi
    Prodigy 220 points

    Hi, Ralph,

    Thank for you reply, my issue is solved according to your reply.

    I turn off the optimization level, so it is OK.

    Regards,

    eric