将两块CAN总线开发板CANH---CANH,CANL---CANL相连，通过串口调试软件发送数据到单片机中，数码管显示相应的数值，并通过CAN发送到另一块CAN开发板上。-Will be connected to two CAN bus development board CANH--- CANH, CANL--- CANL debugging software to send data through the serial port to the microcontroller, digital display corresponding values ​ ​ to another piece of CAN development board and sent via CAN.