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CC1310: 带外部PA和LNA的模块在LBT例程中怎么控制引脚

Part Number:CC1310

使用rfListenBeforeTalk例程,在调用 RF_runCmd(rfHandle, (RF_Op*)&RF_cmdNop, RF_PriorityNormal,&callback, 0);会执行发送。可是我的模块存在外部PA和LNA,在执行LNA检测的时候,应该通过IO把LNA打开,PA关闭,然后再发送的时候需要关闭LNA,打开PA再延迟几个毫秒,执行发送,请问应该怎么实现这个功能?

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Lydia:

您好

已经收到了您的案例,调查需要些时间,感谢您的耐心等待

,

Links:

请参阅以下文档,了解如何将PA和LNA控制信号路由到您选择的GPIO。

https://dev.ti.com/tirex/explore/content/simplelink_cc13x0_sdk_4_20_02_07/docs/proprietary-rf/proprietary-rf-users-guide/rf-core/signal-routing.html

您还可以查看以下代码示例(仅限LNA,但PA使用的方法相同)

https://www.ti2k.com/wp-content/uploads/ti2k/DeyiSupport_1GHz_node

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,

?? ?:

用这个方法,我可以把LNA和PA的信号配置到GPIO中,但是还有个问题没有解决,就是PA的延时问题,我们的PA存在毫秒级别的启动延时,如果在发送的时候再打开,可能会无法输出功率,有没有关于PA打开后延迟发送的接口

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Links:

如果您的PA需要比从RF Core发出PA信号时更早开启,那么您只需使用GPIO并从应用程序手动控制它。 无法更改来自CC1310的PA信号的定时。

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