cc2530管脚输出模式问题

端口需要配置为漏极开路输出或集电极开路输出，请问该怎么用啊   

没有相关的寄存器可以配置输出模式

You can program the GPIO to be input with 3-state (please refer to register PxDIR, PxINP) when you need open drain/collector.

If you want a logic low, you can program the GPIO to be output low.(please refer to register PxDIR, Px)