FLASH_ErasePage() 擦除flash页，全速执行出现 NOCP错误，仿真单步执行正常。
psr: 0x01000027
r00: 0x00000001
r01: 0x40022000
r02: 0x80000000
r03: 0xfffff4ba
r04: 0x00000000
r05: 0x40022090
r06: 0xffffffff
r07: 0xdeadbeef
r08: 0xdeadbeef
r09: 0xdeadbeef
r10: 0xdeadbeef
r11: 0xdeadbeef
r12: 0x00000000
lr: 0x08009237
pc: 0x08036b28
hard fault on handler
usage fault:
SCB_CFSR_UFSR:0x08 NOCP
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