[参考译文] MSP432E411Y：如何在 main()函数之前实现外设初始化过程

您好！

  我认为可以在 main 之前添加一些用户提供的函数、但我不知道如何操作。 以下是您可以查看的文档。  

  https://www.ti.com/lit/pdf/spruex3 -请参阅第3.1节

  https://www.ti.com/lit/ug/spruex4/spruex4.pdf -请参阅 XDC 引导顺序和控制点

 我还认为你可以在 main()之后执行它。  

 第一个主函数将调用 Board_init()。 Board_init()调用 Board_initHook()。 您可以使用 Board_initHook()函数来初始化 EPI 模块。  

/*
 *  ======== Board_initHook ========
 *  Perform any board-specific initialization needed at startup.  This
 *  function is declared weak to allow applications to override it if needed.
 */
void __attribute__((weak)) Board_initHook(void)
{
}

/*
 *  ======== Board_init ========
 *  Perform any initialization needed before using any board APIs
 */
void Board_init(void)
{
    /* ==== /ti/drivers/Power initialization ==== */
    Power_init();

    /* Grant the DMA access to all FLASH memory */
    FLASH_CTRL->PP |= FLASH_PP_DFA;

    /* Region start address - match FLASH start address */
    FLASH_CTRL->DMAST = 0x00000000;

    /*
     * Access to FLASH is granted to the DMA in 2KB regions.  The value
     * assigned to DMASZ is the amount of 2KB regions to which the DMA will
     * have access.  The value can be determined via the following:
     *     2 * (num_regions + 1) KB
     *
     * To grant full access to entire 1MB of FLASH:
     *     2 * (511 + 1) KB = 1024 KB (1 MB)
     */
    FLASH_CTRL->DMASZ = 511;

    Board_initHook();
}