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am3358在uboot中实现can收发数据

Other Parts Discussed in Thread: AM3358

我想在am3358的uboot中实现收发数据,但是遇到一些问题。现象是message handler发消息了,但是一直没有返回信息,newdata和Txrq显示是消息在发送的状态。

在test模式,将TX[1:0]设置tx pin为显性或隐性时,tx引脚测量一直为高电平,没有变化。

请帮我分析下可能的原因,谢谢!