本帖最后由 rui911 于 2024-11-5 11:15 编辑
你好，我看md_S文件中已经调用SystemInit了，我在该函数中已设置向量表偏置。我这样设置过了，请问该程序还是不能启动（在0x0800E000地址上。（我有bootloade程序跳转至该地址）
void SystemInit (void)
{
/* FPU settings */
#if (__FPU_PRESENT == 1) && (__FPU_USED == 1)
SCB->CPACR |= ((3UL << 10*2)|(3UL << 11*2)); /* set CP10 and CP11 Full Access */
#endif
/* reset the RCU clock configuration to the default reset state */
/* Set IRC8MEN bit */
RCU_CTL |= RCU_CTL_IRC8MEN;
while(0U == (RCU_CTL & RCU_CTL_IRC8MSTB)){
}
RCU_MODIFY(0x50);
RCU_CFG0 &= ~RCU_CFG0_SCS;
#if (defined(GD32F30X_HD) || defined(GD32F30X_XD))
/* reset HXTALEN, CKMEN and PLLEN bits */
RCU_CTL &= ~(RCU_CTL_PLLEN | RCU_CTL_CKMEN | RCU_CTL_HXTALEN);
/* disable all interrupts */
RCU_INT = 0x009f0000U;
#elif defined(GD32F30X_CL)
/* Reset HXTALEN, CKMEN, PLLEN, PLL1EN and PLL2EN bits */
RCU_CTL &= ~(RCU_CTL_PLLEN |RCU_CTL_PLL1EN | RCU_CTL_PLL2EN | RCU_CTL_CKMEN | RCU_CTL_HXTALEN);
/* disable all interrupts */
RCU_INT = 0x00ff0000U;
#endif
/* reset HXTALBPS bit */
RCU_CTL &= ~(RCU_CTL_HXTALBPS);
/* Reset CFG0 and CFG1 registers */
RCU_CFG0 = 0x00000000U;
RCU_CFG1 = 0x00000000U;
/* configure the system clock source, PLL Multiplier, AHB/APBx prescalers and Flash settings */
system_clock_config();
#ifdef VECT_TAB_SRAM
nvic_vector_table_set(NVIC_VECTTAB_RAM, VECT_TAB_OFFSET);
#else
nvic_vector_table_set(NVIC_VECTTAB_FLASH, VECT_TAB_OFFSET);
#endif
}
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