TMS320F280039C: 芯片unsecure状态下，写如key值，程序跑飞，跑入Interrupt_illegalOperationHandler中断

请问下是什么原因？

Flash_CsmUnlock(void)
{
volatile long int *CSM = (volatile long int *)0x5F090; //CSM register file

volatile long int *CSMPWL = (volatile long int *)0x78028; //CSM Password location (assuming default Zone sel block)

volatile int tmp;

int I;

// Read the 128-bits of the CSM password locations (PWL)

for (I=0; I<4; I++)
{
tmp = *CSMPWL++;
}

*CSM++ = 0xFFFFFFFF; //DcsmZ1Regs.Z1_CSMKEY0;// Register Z1_CSMKEY0 at 0x5F010

*CSM++ = 0xFFFFFFFF; //DcsmZ1Regs.Z1_CSMKEY1;// Register Z1_CSMKEY1 at 0x5F012

*CSM++ = 0xFFFFFFFF; // DcsmZ1Regs.Z1_CSMKEY2;// // Register Z1_CSMKEY2 at 0x5F014

*CSM++ = 0xFFFFFFFF; // DcsmZ1Regs.Z1_CSMKEY3;// // Register Z1_CSMKEY3 at 0x5F016

}

您好，

已经收到了您的案例，调查需要些时间，感谢您的耐心等待。