ble 空口包格式

科技前沿 • 2025-03-24 10:22 • 阅读 45

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一、ble 空口包简介
二、Uncoded PHY 包格式（LE 1M 或 LE 2M PHY）
- 1. Preamble
- 2. Access Address
- 3. PDU
- 4. CRC
- 5. Constant Tone Extension
三、Coded PHY 包格式（LE 1M PHY）
四、Advertising Channels PDU
- 1. Header
- - a. PDU Type
  - b. ChSel
  - c. TxAdd
  - d. RxAdd
  - e. Length
- 2. Payload
- - a. Advertising PDU
  - - i. ADV_IND
    - ii. ADV_DIRECT_IND
    - iii. ADV_NONCONN_IND
    - iv. ADV_SCAN_IND
  - b. Scanning PDU
  - - i. SCAN_REQ
    - ii. SCAN_RSP
  - c. Initiating PDU
  - - i. CONNECT_IND
五、Date Channels PDU
- 1. Header
- 2. Payload
- - a. LL Data PDU
  - b. LL Control PDU
  - - i. 0x00 - LL_CONNECTION_UPDATE_IND
    - ii. 0x01 - LL_CHANNEL_MAP_IND
    - iii. 0x02 - LL_TERMINATE_IND
    - iv. 0x03 - LL_ENC_REQ
    - 0x04 - LL_ENC_RSP
    - 0x05 - LL_START_ENC_REQ
    - 0x06 - LL_START_ENC_RSP
    - 0x0A - LL_PAUSE_ENC_REQ
    - 0x0B - LL_PAUSE_ENC_RSP
    - v. 0x07 - LL_UNKNOWN_RSP
    - vi. 0x08 - LL_FEATURE_REQ
    - 0x09 - LL_FEATURE_RSP
    - 0x0E - LL_PERIPHERAL_FEATURE_REQ
    - vii. 0x0C - LL_VERSION_IND
    - viii. 0x0D - LL_REJECT_IND
    - 0x11 - LL_REJECT_EXT_IND
    - ix. 0x0F - LL_CONNECTION_PARAM_REQ
    - 0x10 - LL_CONNECTION_PARAM_RSP
    - x. 0x14 - LL_LENGTH_REQ
    - 0x15 - LL_LENGTH_RSP
    - xi. 0x16 - LL_PHY_REQ
    - 0x17 - LL_PHY_RSP
    - 0x18 - LL_PHY_UPDATE_IND
    - xii. 0x19 - LL_MIN_USED_CHANNELS_IND
- 3. MIC