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espressif / esp-nimble

A fork of NimBLE stack, for use with ESP32 and ESP-IDF
Apache License 2.0
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NimBLE: Unable to find the second device of the same product after using Host based privacy (RPA) feature support (v4.0) #28

Closed soonyak closed 5 months ago

soonyak commented 3 years ago

Environment

Module or chip used: ESP32-WROOM-32D IDF version: v4.0 beta2 (commit @99fb9a3f7) NimBLE version: v1.1.0 (commit @a5127ec)

Problem Description

I have ported the Host based privacy (RPA) feature support (v4.0) to my code and this is able to fix the connection problem when iPhone/Android devices use RPA addresses, which change periodically or after Bluetooth on-off. However, when the phone successfully pairs the first device, it is not able to find the second device of the same product.

Is this the normal behaviour? I am not able to find any description about this online.

I have attached my init code and sync callback function that implements the following:

  1. Set own_addr_type to BLE_OWN_ADDR_RANDOM.
  2. Add BLE_SM_PAIR_KEY_DIST_ID to key distribution in ble_hs_cfg.sm_our_key_dist & ble_hs_cfg.sm_their_key_dist.
  3. Call ble_hs_pvcy_rpa_config(1) in Host-Controller sync callback.

AppCode.txt

soonyak commented 3 years ago

I can see the second device only when I unpair the first device.

rahult-github commented 5 months ago

This is old issue and also reported on older IDF version which is EOL. Please let us know if issue still observed on latest releases. Closing the issue.