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Keil File System on stm32f76x

arm工程师你好,我正在使用keil自带的文件系统,在Run-Time Environment 里面选面我选择了SD卡和NAND FLASH,这两个设备我都可以正确使用,但是还是有个问题想请教一下,在nand_membus.c里怎么如何做到用stm32f76x的硬件ecc功能,我使用软件ECC虽然可以使用,但是速度很慢,且CPU负担过大,在fs_config_nand.h里面我也使能过硬件ECC但是程序会进入hardfault,能帮忙解答一下吗?  谢谢!Thanks!