1.系统已运行uart1和uart2,并正常工作,使用空闲中断接收2.当uart3有数据收或者发,都会马上报硬件错误HardFault_Handler求大佬指点迷津
https://blog.csdn.net/sinat_34763550/article/details/81240531?utm_source=blogxgwz8