BLE 广播时间设置

最新推荐文章于 2025-06-09 23:03:24 发布

原创最新推荐文章于 2025-06-09 23:03:24 发布 · 2.8k 阅读

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本文详细解释了如何在Key Fob设备中设置广告时间间隔，并提供了相关参数和代码实例，包括如何更改广告间隔时间、设置有限发现模式以及调整最大广告时间。

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In keyfob code, the gapRole_AdvertOffTime is set to 0 in KeyFobApp_Init();

 GAPRole_SetParameter( GAPROLE_ADVERT_OFF_TIME, sizeof( uint16 ), &gapRole_AdvertOffTime );

While Keyfob is set in limited discoverable mode

#define DEFAULT_DISCOVERABLE_MODE             GAP_ADTYPE_FLAGS_LIMITED

which will stop advertising after 180s by the following parameter

#define TGAP_LIM_ADV_TIMEOUT           1  //!< Maximum time to remain advertising, when in Limited Discoverable mode. In seconds (default 180 seconds)

you can change by :

GAP_SetParamValue( TGAP_LIM_ADV_TIMEOUT, xxxxx );

In KeyFobApp_Init(); you will find code for setting the advertising interval

  // Set advertising interval
  {
    uint16 advInt = DEFAULT_ADVERTISING_INTERVAL;

    GAP_SetParamValue( TGAP_LIM_DISC_ADV_INT_MIN, advInt );
    GAP_SetParamValue( TGAP_LIM_DISC_ADV_INT_MAX, advInt );
    GAP_SetParamValue( TGAP_GEN_DISC_ADV_INT_MIN, advInt );
    GAP_SetParamValue( TGAP_GEN_DISC_ADV_INT_MAX, advInt );
  }

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