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28069 SCI接收故障



系统为主从结构,当单对单收发数据时,通讯正常,但是单对多时通讯故障。SCI的接收采用FIFO方式,通讯方式为idle-line 模式,当接入两个从机后,寄存器产生数据接收错误信息,进入FIFO中断。我尝试过在中断里判断如果有错误信息,将SW RESET位写1,但是没有效果。