在 vpssM3上访问spi相关的寄存器（0x48030100）时报错。 未找到原因，求帮助。输出信息如下：
ti.sysbios.family.arm.m3.Hwi: line 850: E_hardFault: FORCED
ti.sysbios.family.arm.m3.Hwi: line 927: E_busFault: IMPRECISERR
Exception occurred in background thread.
Exception occurred in ThreadType_Task.
Task handle: 0x8d77f188.
Task stack base: 0x8e8a4a20.
Task stack size: 0x8000.
R0 = 0x00000012 R8 = 0xffffffff
R1 = 0x481a0100 R9 = 0xffffffff
R2 = 0x00000000 R10 = 0xffffffff
R3 = 0x8e8ac8a0 R11 = 0xffffffff
R4 = 0x8d3e4559 R12 = 0x00000000
R5 = 0xffffffff SP(R13) = 0x8e8ac8d0
R6 = 0xffffffff LR(R14) = 0x8d371f2b
R7 = 0xffffffff PC(R15) = 0x8d371dc8
PSR = 0x21000000
ICSR = 0x0440f803
MMFSR = 0x00
BFSR = 0x04
UFSR = 0x0000
HFSR = 0x40000000
DFSR = 0x00000000
MMAR = 0xe000ed34
BFAR = 0xe000ed38
AFSR = 0x00000000
Terminating execution...