本实验采用eCAN模块本身提供的self-test功能，将32个邮箱设置为16个发送，16个接收模式，采用自发自收的方式，循环发送，可以通过将接收邮箱里接收数据读出，来判断CAN是否正常。-In this study, provided by the module itself eCAN self-test function, the mailbox is set to 32 to 16 send, receive mode 16 by way of spontaneous self-closi