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CC2530 串口0、串口1怎样设置为 备用位置2 ?P1口没有类似P0口的外设功能控制啊!

Genius 3030 points

Other Parts Discussed in Thread: CC2530

先设置PERCFG寄存器为备用位置2

然后

P1SEL |= 0xc0;     //P1外设用作串口:P1.6/P1.7

但是没有类似P0的外设优先级控制寄存器啊

怎样才可以使用位置2啊?