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開發(fā)板

OpenWRT配置一發(fā)雙收的方法

發(fā)布日期:2022-10-14 點擊率:53

去年,我們?yōu)榭蛻糸_發(fā)了多款手持機形態(tài)的自組網(wǎng)板卡,這類板卡往往有個通用的客戶需求——發(fā)熱量小。這個時候,我們都會建議客戶按照2T2R(即雙發(fā)雙收)的方式做硬件設計,在實際使用時,可以配置成為1T2R(即一發(fā)雙收,以下都用1T2R表示),相當于關閉一路射頻功放,可以大大降低設備的發(fā)熱量。按照這種方式,既可以在性能PK時領先競爭對手,又可以提升產(chǎn)品的實用性,一舉兩得。本文與各位讀者分享一下在OpenWRT環(huán)境下的配置方式。

編輯/etc/config/wireless文件,在需要更改配置的radio下面增加以下2行:

option txantenna 0x1
option rxantenna 0x3

其中txantenna與rxantenna的配置值與ART是相符的,對于雙天線板卡,存在如下對應關系

配置值 天線1 天線0
0x1 關閉 打開
0x2 打開 關閉
0x3 打開 打開

據(jù)Qualcomm FAE所說,天線0是主天線,因此建議配置1T2R時,啟用天線0的發(fā)射,而不是天線1。

以下是配置為1T2R的wireless文件

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