使用stm32f05xx驱动qd25q40b,使用dma+spi方式实现其读写功能，用于程序空间比较小，只开辟２５６字节进行传输，大于２５６字节的有spi实现-Use stm32f05xx driver qd25q40b, using dma+ spi mode to realize the read and write functions, used in the program space is small, only 256 bytes transmitted, open up more