开启FlashFS的系统日志(FAT Journal)功能后,将有效防止系统掉电后对文件系统损坏。
但是开启后,SD卡的写速度会有所降低。
===================================================== FAT Journal protects the file system from a potential damage during power failure and keeps the system in a consistent state. This option does not protect files that are written during power failure. #define MC0_FSJ 1 // 0=disable; 1=enable