stm32给的库文件太琐碎了，正如它的芯片型号相同繁复，例如发动文件：
网上查到的各个文件的解说是：
startup_stm32f10x_cl.s 互联型的器材，STM32F105xx，STM32F107xx
startup_stm32f10x_hd.s 大容量的STM32F101xx，STM32F102xx，STM32F103xx
startup_stm32f10x_hd_vl.s 大容量的STM32F100xx
startup_stm32f10x_ld.s 小容量的STM32F101xx，STM32F102xx，STM32F103xx
startup_stm32f10x_ld_vl.s 小容量的STM32F100xx
startup_stm32f10x_md.s 中容量的STM32F101xx，STM32F102xx，STM32F103xx
startup_stm32f10x_md_vl.s 中容量的STM32F100xx
startup_stm32f10x_xl.s FLASH在512K到1024K字节的STM32F101xx，STM32F102xx，STM32F103xx
固件库中的Release_Notes_for_STM32F10x_CMSIS.html写到：
STM32F10x CMSIS Startup files: startup_stm32f10x_xx.s
- Add new startup files for STM32 Low-density Value line devices: startup_stm32f10x_ld_vl.s
- Add new startup files for STM32 Medium-density Value line devices: startup_stm32f10x_md_vl.s
- SystemInit() function is called from startup file (startup_stm32f10x_xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to system_stm32f10x.c file - GNU startup file for Low density devices (startup_stm32f10x_ld.s) is updated to fix compilation errors.
那究竟啥是大容量，小容量啊？又查user manual才知道
也就是说，例如我用STM32F103RB，那么选发动文件为startup_stm32f10x_md.s
