将stm32的boot和app自动合成一个hex文件，方便首次烧录。（可以在末尾添加数据）-Synthesize the stm32 boot and app automatically a hex file, convenient burn for the first time.(can be added to the end in the data)

stm32待机启动试验，源码，可以参考下学习(STM32 standby boot test, source code, you can refer to)

STM32启动代码 ，bootloader支持can和rs232方便大家升级应用程序。(STM32 boot code, bootloader supports Can, RS232 download applications.)