如何使用扩展广告数据？

Jesse Huang

Other Parts Discussed in Thread: CC2640R2F

在《TI BLE5-Stack User’s Guide》里的“GAP Constraints”章节里有说到：

The data length of the advertising data and the scan response data for Extended Advertising is limited to 1650 bytes. The connectable undirected advertising data is limited to 212 bytes. The connectable directed advertising data is limited to 206 bytes.

该怎么把 adv data 或 scan rsp data 扩展到 31 byte 以上？目前我好像只能使用 31 byte 的长度。

5 年多前

0 Viki Shi 5 年多前

TI__Guru**** 188340 points

请问你测试的芯片及SDK分别是什么？在最新的CC26X2上，data length extension已经默认开启了。以下代码来自simple peripheral

 // Set default values for Data Length Extension
  // Extended Data Length Feature is already enabled by default
  {
    // Set initial values to maximum, RX is set to max. by default(251 octets, 2120us)
    // Some brand smartphone is essentially needing 251/2120, so we set them here.
    #define APP_SUGGESTED_PDU_SIZE 251 //default is 27 octets(TX)
    #define APP_SUGGESTED_TX_TIME 2120 //default is 328us(TX)

    // This API is documented in hci.h
    // See the LE Data Length Extension section in the BLE5-Stack User's Guide for information on using this command:
    // software-dl.ti.com/.../
    HCI_LE_WriteSuggestedDefaultDataLenCmd(APP_SUGGESTED_PDU_SIZE, APP_SUGGESTED_TX_TIME);

文档请参考：http://dev.ti.com/tirex/explore/content/simplelink_cc13x2_26x2_sdk_4_10_00_78/docs/ble5stack/ble_user_guide/html/ble-stack-common/link-layer-cc13x2_26x2.html#le-data-length-extension-dle

0 Jesse Huang 5 年多前回复 Viki Shi

Expert 2653 points

芯片是：CC2640R2F
SDK：simplelink_cc2640r2_sdk_4_10_00_10
你好像理解错我的问题了，我是问如何扩展广播数据包里面的数据。蓝牙5.0的广播数据包不是可以广播很多数据的吗？

0 Viki Shi 5 年多前回复 Jesse Huang

TI__Guru**** 188340 points

可以的，但是目前很多手机不一定支持AE。修改方法参考这边，修改AdvData的buffer等参数即可：dev.ti.com/.../node

这边有个类似问题供参考：e2e.ti.com/.../2692963

0 Jesse Huang 5 年多前回复 Viki Shi

Expert 2653 points

/// Default parameters for long range, connectable, advertising extension
#define GAPADV_PARAMS_AE_LONG_RANGE_CONN {                                 \
  .eventProps = GAP_ADV_PROP_CONNECTABLE,                                  \
  .primIntMin = 160,                                                       \
  .primIntMax = 160,                                                       \
  .primChanMap = GAP_ADV_CHAN_ALL,                                         \
  .peerAddrType = PEER_ADDRTYPE_PUBLIC_OR_PUBLIC_ID,                       \
  .peerAddr = { 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa },                      \
  .filterPolicy = GAP_ADV_WL_POLICY_ANY_REQ,                               \
  .txPower = GAP_ADV_TX_POWER_NO_PREFERENCE,                               \
  .primPhy = GAP_ADV_PRIM_PHY_CODED_S2,                                    \
  .secPhy = GAP_ADV_SEC_PHY_CODED_S2,                                      \
  .sid = 0                                                                 \
}

advertising extension 只能用 GAP_ADV_PRIM_PHY_CODED_S2 吗？不能在 GAP_ADV_PRIM_PHY_1_MBPS 吗？

Bluetooth

蓝牙论坛

如何使用扩展广告数据？