SD卡的SPI读写程序，内含SPI总线时序函数、SD卡的读写函数，可直接嵌入到UC/OS操作系统中进行调用,采用.c和.h文件进行分装，可直接嵌入到项目或操作系统中，支持51单片机、STM32、ARM7等单片机，500M主屏以上的处理器请对SPI时序进行修改。-SD card SPI read and write procedures containing SPI bus timing function, SD card reader function, can be directly embedded into the UC/OS operating system calls, use. C and. H files for packaging and can be directly embedded into project or the operating system to support 51 single, STM32, ARM7 microcontroller, etc., 500M processor, the main screen above, please modify the SPI timing.