Maintenance of wireless devices
摘要
說明書
The operating system on the electronic device can receive a timer event that is based on a maintenance timer (block 1301). The maintenance timer can be a periodic timer that enables the electronic device to periodically check for nearby unmaintained wireless accessories (block 1302), which are accessories that in an unmaintained near owner mode according to the advertisement packet type and the maintained bit in the status field of the advertisement packet. The timer can be an opportunistic timer or a precise timer (e.g., backstop timer). The check for unmaintained accessories can include to read a scan buffer to determine if advertisement packets for wireless accessories have been received. The status field of those packets can be checked to determine a maintenance status for those accessories. The electronic device can also perform a wireless discovery scan to gather a current survey of nearby wireless devices and accessories to determine if any of those accessories can be maintained.
If any unmaintained accessories are detected (block 1303, YES), the electronic device can connect to the unmaintained accessories to reset near owner timeout (block 1304). The connection to the accessory, in this case, is an encrypted wireless connection. In response to receive of an encrypted wireless connection, the wireless accessory will set the maintained bit in the status field of the near owner advertisement packet until the end of the current key rotation period. This connection also causes the accessory to reset the near owner timeout for the accessory. The electronic device can then perform any needed maintenance activities on the wireless accessory (block 1307). Maintenance activities may include but are not limited to synchronizing timers, setting or resetting internal counters, and checking for error or crash logs.
