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TMS320C6000 McBSP 中断接收,难道只能发出一次,才能触发接收中断吗?

各位好,TMS320C6000 McBSP收发中断中,触发接收中断,能否在对方发送数据就触发,
而不是我自己的发送一次才能触发一次接收。我现在只能做到我发送时候,可以同时触发
接收中断,如果我不发送数据那么接收中断也不会触发。请指示。