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这个例程是内部自环,所以管脚上是没有数据输出的。请看下面user guide文档说明。
Message is transmitted and received back internally using internal loopback mode. When the received message id and the data matches with the transmitted one, then the example is completed.
https://dev.ti.com/tirex/explore/node?a=VLyFKFf__4.12.1&node=A__AD2nw6Uu4txAz2eqZdShBg__com.ti.MCU_PLUS_SDK_AM243X__AROnekL__LATEST
同样的文件夹里有另外一个自环例程mcan_external_loopback_interrupt。
https://dev.ti.com/tirex/explore/node?a=VLyFKFf__4.12.1&node=A__AD2nw6Uu4txAz2eqZdShBg__com.ti.MCU_PLUS_SDK_AM243X__AROnekL__LATEST
这边应用是在一个MCAN接口上实现收发
如果是这个MCAN接口是和其他MCAN口收发,可以参考上面的external loopback。如果是板子这个MCAN自发自收,用上面的Internal loopback就可以了。