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将HAL_PA_LNA定义之后 测量P1_1引脚 电压为0 信号强度并没有增加 请问如何才能将PAEN使能
/* P1_1 -> PAEN */ RFC_OBS_CTRL0 = RFC_OBS_CTRL_PA_PD_INV; OBSSEL1 = OBSSEL_OBS_CTRL0;
