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TMS320F28379D: FLASH ECC Detect

Part Number: TMS320F28379D

1、在28379 MCU self_test example里有FLASH ECC检测uint16_t STL_Flash_detectECCError(const STL_Flash_ECCDetectHandleflashECCDetectHandle)

   当插入FLASH ECC故障时,使用如下地址 
#define STA_USER_FLASH_START_ADDR_ERR   0x701F8U
#define STA_USER_FLASH_END_ADDR_ERR     0x701FCU


 查阅相关资料,0x701F8U-0x701FFU区域是TI OTP区,在该区TI插入了ECC故障,请问这个故障多久触发一次?

2、上电自检时检测FLASH  ECC,做故障插入时,可以触发故障; 但将FLASH ECC在mainloop中用于周期性自检,做故障插入时,有时可以检测到故障,有检测不到,呈周期性变化。这是不是由于TI OTP区中的ECC故障触发周期不定导致?