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MCASP问题



我在使用MCASP0做IIS的通讯.配置好AIC3100后

 

MCASP0的时钟 IO等都初始化好了...

执行函数McASPRxSerActivate和McASPTxSerActivate  一直在那里循环.初始化不过去

 

在EVM开发班中使用了4个 IO.我也对应的设置好了..

 

 

是什么原因导致无法进入下一步?