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CC2530在低功耗模式下的问题



我的P0_6作为开关控制引脚,P0_5作为ADC的模拟输入,修改协议栈使P0_5一直为模拟输入。问题如下:

1、设置P0_6为低电平,当我控制模块进入低功耗后,发现P0_6的电平为0.65V。

2、当我不把P0_5一直作为模拟输入,每次ADC采集完成后,让其变为普通IO。再进行1的操作,发现P0_6的电平为0V。

请问这是为什么?