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Keil uVision Error L6218E: Undefined Symbol APBPrescTable (referred from stm32f4xx_hal_rcc.o)

I'm new to uVision for a University project and since trying to get my code to build on my PC at home I get this error with any code I try to compile. Anyone know any way to fix this? I've been racking my brain for hours trying to find a solution as I can't work on my project if the code won't even build. Thank you.

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  • STM32Cube_FW_F4_V1.24.1\Projects\STM32446E-Nucleo\Templates\Src\system_stm32f4xx.c

    ..
    
    /* This variable is updated in three ways:
    1) by calling CMSIS function SystemCoreClockUpdate()
    2) by calling HAL API function HAL_RCC_GetHCLKFreq()
    3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
    Note: If you use this function to configure the system clock; then there
    is no need to call the 2 first functions listed above, since SystemCoreClock
    variable is updated automatically.
    */
    uint32_t SystemCoreClock = 16000000;
    const uint8_t AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};
    const uint8_t APBPrescTable[8] = {0, 0, 0, 0, 1, 2, 3, 4};

  • Hi I'm still having issues with this. Even with an example project downloaded directly from Keil, it still gives me this error: Undefined Symbol APBPrescTable, is there anything I can add to my code that would fix this?

  • Build one of the example or template projects. From *ST*  https://www.st.com/en/embedded-software/stm32cubef4.html

    Seems like your project is missing some meta-data, either in the command line defines for compiler, or paths for include files. Or the source is just not built/included in your project. Check for #ifdef block code inclusion.

    Or you are mixing things from inconsistent sources.