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am335x是否有串口发送完成中断

Other Parts Discussed in Thread: AM3352, TMDXEVM3358

 

am335x是否有串口发送完成中断,,,,,我要用于485的切换..也就是所有的fifo都已经发送到总线上了...

 

目前知道TXSRE这个位可以判断移位寄存器是否为空,但是我没有找到对应的中断...也就是我想当中断来了.代表TXSRE这个寄存器为空

 

 

不是fifo为空中断...fifo为空不一定将数据移动到总线上.