Rx interrupt Generated whenever receive data reaches the
trigger level of receive FIFO.
Generated when the number of data in FIFO does
not reaches Rx FIFO trigger Level and does not
receive any data during 3 word time (receive time
out). This interval follows the setting of Word
Length bit.
就是说数据量达到trigger Level时才能产生rx中断,我的trigger Level设置为16byte。
那为什么我只给uart发送1个byte的时候uart也能接收到呢?不是不能产生中断吗,为什么还能接收呢? 小弟苦思了两天,还是搞不懂,只好来请教大家了。
多谢了!!!!!!!!!!!!!!!!!