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AM5716: mcspi2和mcspi4通过引脚直连主从通信问题,程序运行在IPU中

Part Number: AM5716


mcspi2和mcspi4一主一从,收发模式,测试时连续交换50个数。一开始时数据交换正常。当交换mcspi2和mcspi的主从关系时,从spi接收不到数据,但是MOSI数据线的可以抓取到正确的数据波形。

请问mcspi作为主设备或从设备时引脚的配置以及D0,D1数据线的方向配置有没有需要注意的地方。