nandflash文件系统源代码，已经经过测试没有问题。有需要的朋友可以参考一下,the nandflash file system source code has been tested no problem.

stm32f417开发板rt-thread1.2操作系统移植。 1.串口3、串口6输出正常 2.finsh正常 3.运行灯正常闪烁 4.外部RAM可用 is61wv1024 5.NAND MT29F4D08驱动可用 6.NAND 的 UFFS文件系统可用-stm32f417 development board rt-thread1.2 operating system migration. 1 UART3/6 is ok 2.finsh is ok 3 run