功能说明：STM32 使用SD卡升级用户程序。



STM32 bootloader。

启动时，如果SD卡里面有TMSCR.bin（必须在格式化完卡后，第一个copy入，之后就无所谓了），则进入升级流程，否则就启动用户程序。用户程序的起始地址为：0x8002000。-Function Descr iption: STM32 user program using the SD card upgrade. STM32 bootloader. Startup, SD card inside TMSCR.bin to (After the card must be formatted first copy into, and then it does not matter), the upgrade process, otherwise start the user program. The starting address of the user program: 0x8002000.