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DSP28335程序跑飞原因(下载到FLASH),死在33BD4E 6F00 SB 0,UNC

DSP28335程序,增加了一部分功能后,下载到FLASH运行,运1-2小时后死机,连接仿真器发现死在33BD4E 6F00 SB 0,UNC上,而且和缓存数据大小有关系!

(1)死循环在33BD4E 6F00 SB 0,UNC有哪些原因?

(2)有什么办法可以定位到最后执行到具体哪一条程序后,死机的?(STM32可以定位)

MAP:

0033bd1d _LVF_ISR
0033bd27 _LUF_ISR
0033bd31 _INT14_ISR
0033bd3b _INT13_ISR
0033bd45 _ILLEGAL_ISR`~
0033bd4f _I2CINT2A_ISR
0033bd59 _I2CINT1A_ISR
0033bd66 _EQEP2_INT_ISR
0033bd70 _EQEP1_INT_ISR