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Thread: delay in XMC_SCU_CLOCK_Init() function

  1. #1
    New Member New Member ipek is on a distinguished road
    Join Date
    May 2019
    Turkey, Ankara

    delay in XMC_SCU_CLOCK_Init() function


    At the beginning of every code in my projects I call 2 functions: XMC_SCU_CLOCK_Init(&clockConfig); and SysTick_Config(SystemCoreClock / ticksPerSecond);
    XMC_SCU_CLOCK_Init is to select clock source and frequency, SysTick_Config is to configure tick interrupt.
    I have several questions about this XMC_SCU_CLOCK_Init function.
    -It takes approximately 2 seconds to pass through that function. This duration may not be tolerable for my projects. So I commented out that function and everything works fine(CAN, UART..) Correct me If I am wrong but if I am working with
    default values (clock source = DCO1, fdiv = 0, idiv = 1 pclock = 2 x mclock) I don't have to call this function right ?
    - Sometimes I cannot pass throug that function... I have several xmc1400 boot kit boards. And with one of them I cannot exit XMC_SCU_CLOCK_Init function. When I debug, I saw that program keep looping in this do-while :
    (xmc1_scu.c, XMC_SCU_CLOCK_Init(const, XMC_SCU_CLOCK_CONFIG_t * const config) function, lines 545-560)
    Weird thing is, I errase chip before doing anything, I use the exactly same code for all these boards, they have the same hardware configuration but some of them have this problem..
    For now I comment it out only. But I know this is not a solution.

    Best regards,

  2. #2

    Infineon Employee
    Infineon Employee
    jferreira will become famous soon enough
    Join Date
    Oct 2012

    This is addressed in XMCLib 2.1.24,

    The views expressed here are my personal opinions, have not been reviewed or authorized by Infineon and do not necessarily represent the views of Infineon.

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