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PM0237 数据表(PDF) 13 Page - STMicroelectronics |
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PM0237 数据表(HTML) 13 Page - STMicroelectronics |
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13 / 88 page ![]() DocID027104 Rev 2 13/88 PM0237 Bluetooth low energy technology 88 b) Advertising packet type: Table 3. Advertising packet types Packet type Description Notes ADV_IND Connectable undirected advertising Used by an advertiser when it wants another device to connect to it. Device can be scanned by a scanning device, or go into a connection as a slave device on connection request reception. ADV_DIRECT_IND Connectable directed advertising Used by an advertiser when it wants a particular device to connect to it. The ADV_DIRECT_IND packet contains only advertiser’s address and initiator address. ADV_NONCONN_IND Non-connectable undirected advertising Used by an advertiser when it wants to provide some information to all the devices, but it does not want other devices to ask it for more information or to connect to it. Device simply sends advertising packets on related channels, but it does not want to be connectable or scannable by any other device. ADV_SCAN_IND Scannable undirected advertising Used by an advertiser which wants to allow a scanner to require more information from it. The device cannot connect, but it is discoverable for advertising data and scan response data. SCAN_REQ Scan request Used by a device in scanning state to request addition information to the advertiser . SCAN_RSP Scan response Used by an advertiser device to provide additional information to a scan device. CONNECT_REQ Connection request Sent by an initiating device to a device in connectable/discoverable mode. |
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