基于RadioOperator的工程修改（x893的代码），附上链接：
RadioOperator/STM32F103C8T6_CMSIS-DAP_SWO
BluePill STM32F103C6T6的CMSIS-DAP工程，用于板载调试器。
Based RagioOperator's project (x893's code) .
RadioOperator/STM32F103C8T6_CMSIS-DAP_SWO
CMSIS-DAP project of BluePill STM32F103C6T6 for on-board debugger.