classic bluetooth hid device doesn't reconnect (IDFGH-12680)

[aromprg]

Answers checklist.

• I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• I have searched the issue tracker for a similar issue and not found a similar issue.

General issue report

Hello!
I'm use classic Bluetooth with the esp-idf\examples\bluetooth\bluedroid\classic_bt\bt_hid_mouse_device. In my case after successfully pairing with android-phone, esp_mouse has saved the host BD_ADDR in nvs, and then after break Bluetooth connection (phone disable bt), esp power off/on, it needs to reconnect to the host automatically. As found on #10107 I should call esp_bt_hid_device_connect() for this (I'm create reconnect task with 3000ms delay). This work fine with IDF v5.0.2, but now I upgrade to v5.2.1. After this commit esp_mouse will never be able to connect to the host after the first failed attempt.

I (3260) app_main: init end
I (3260) main_task: Returned from app_main()
E (6240) BT_BTC: btc_hd_connect: busy now, status:3, try later!
E (6240) esp_bt_hidd_cb: open failed!
W (8390) BT_HIDD: hidd_l2cif_connect_cfm: connection failed, now disconnect
W (8390) BT_HIDD: hidd_conn_disconnect: already disconnected
W (8390) BT_HCI: hcif conn complete: hdl 0xfff, st 0x4
I (8400) esp_bt_gap_cb: event: 16
E (9240) BT_BTC: btc_hd_connect: busy now, status:3, try later!
E (9240) esp_bt_hidd_cb: open failed!
E (12240) BT_BTC: btc_hd_connect: busy now, status:3, try later!
E (12240) esp_bt_hidd_cb: open failed!
E (15240) BT_BTC: btc_hd_connect: busy now, status:3, try later!
E (15240) esp_bt_hidd_cb: open failed!

In components/bt/host/bluedroid/btc/profile/std/hid/btc_hd.c btc_hd_cb.status remains in the BTC_HD_CONNECTING state forever, without being reset if the connection fails.

[boblane1]

@aromprg Thanks for your reporting. Please try the following patch to see if the issue has been solved.

test.zip

[aromprg]

This patch fixes the reconnection issue. Everything works as expected. Thank you!