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协调器接收丢失问题

我想实现比如,协调器广播发送数据,然后9个路由接收到都返回一串数据,让协调器串口打印出来,但是实际效果是会产生协调器接收数据丢失问题(应该可能是串口DMA方式输出与路由返回数据冲突),造成有时候只收到4-8个之间,有什么办法解决没有?