为了节约成本 把flash 格式化为U盘来用，直接存入用户资料，广告等，该程序实现了，改进了圈圈程序，修复bug STM32CPU 外部flash 就成了外部U盘- NXP LPC1768 chip, USB drive, easy to use, can be used as a cost-saving to flash formatted for U disk to use, directly into the user data, advertising, etc. The progr