stm32 下的SPI FLASH驱动，支持模拟IO和FSMC接口，flash类型K9F1208或k9f1g08 -stm32 under the SPI FLASH drive, support for analog IO and FSMC interfaces, flash type K9F1208 or k9f1g08

关于stm32液晶屏电子相框的实现,程序中包含对液晶屏的io口模拟输出的具体实现-About stm32 LCD digital photo frame for implementation, the program includes specific implementation of the LCD screen io port analog output