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RTOS/IWR6843ISK: what's the use of bios_start()?

user5906854
Intellectual 370 points
Part Number: IWR6843ISK
Other Parts Discussed in Thread: SYSBIOS

Tool/software: TI-RTOS

Hi,

I find BIOS_start() always called in the end of main() function, and what's the use of BIOS_start()?

Thanks!

  • 0
    TI__Mastermind 30405 points

    Hi Wenhao,

    BIOS_start() starts the RTOS's (i.e. SYSBIOS) scheduler thus starting the Task functions. It also enables hardware and software interrupts, and semaphores.

    It is called at the end of main because after calling BIOS_start, the various user created (and system) tasks start executing and execution never returns to main. Hence there should be no code (initialization or otherwise) in main after BIOS_start as it will never get executed.

    You can find more details in the SYSBIOS user guide which is available in the BIOS install directory under docs. Refer to the section named SYS/BIOS startup sequence. Please post further questions on this (or other CCS/Tools related topics) in the CCS Forum: https://e2e.ti.com/support/tools/ccs/f/81

    Regards

    -Nitin