DA14531藍芽模組跟 windows 電腦連線配對完成後，關閉電腦藍芽，再重打開電腦藍芽無法配對重連

Question

您好瑞薩 
 
 近期用 DA14531 MOD(DA14531-00F01002)，載入 HID Gamepad Demo code( SDK 版本為 6.0.18) 
 https://github.com/dialog-semiconductor/BLE_SDK6_examples/tree/main/interfaces/HID-Gamepad-Digitizer 
 
 當在DA14531藍芽模組跟 windows 電腦連線配對完成後

把 windows 電腦的藍芽開關給關閉

再把windows 電腦的藍芽開關，重新打開，此時 DA14531 MOD 跟電腦藍芽產生不停地連線與斷線 
 
 連線與斷線，來回多次後，程式會進到此區塊( void platform_reset_func(uint32_t error )) 
 收到的錯誤碼為 (0xF2F2F2F2)

對於上述問題，已有在瑞薩論壇上參考下列連結方法 
 https://community-ja.renesas.com/zh/forums-groups/wireless-connectivity/f/bluetooth/8873/thread 
 https://community-ja.renesas.com/zh/forums-groups/wireless-connectivity/f/bluetooth/8591/da14531 
 https://community-ja.renesas.com/zh/forums-groups/wireless-connectivity/f/bluetooth/10793/da14531-codeless 
 
 仍然 無法解決，配對斷線後重新連線失敗的問題， 
 希望能協助幫忙查看 配對斷線後重新連線這個異常狀況，並提出解決方法，感謝.

JH_Renesas · Accepted Answer

Undefining CFG_DEVELOPMENT_DEBUG in da1458x_config_basic.h. 
 Increasing retention memory in da1458x_config_advanced.h from 2048 to 3000. 
 
 #define CFG_RET_DATA_SIZE (3000)

Adding the following callbacks in user_callback_config.h

#if (BLE_APP_SEC)
 .app_on_pairing_request = default_app_on_pairing_request,
 .app_on_tk_exch = default_app_on_tk_exch,
 .app_on_irk_exch = NULL,
 .app_on_csrk_exch = default_app_on_csrk_exch,
 .app_on_ltk_exch = default_app_on_ltk_exch,
 .app_on_pairing_succeeded = user_app_on_pairing_succeeded,
 .app_on_encrypt_ind = NULL,
 .app_on_encrypt_req_ind = default_app_on_encrypt_req_ind,
 .app_on_security_req_ind = NULL,
 .app_on_addr_solved_ind = NULL,
 .app_on_addr_resolve_failed = NULL,
 .app_on_ral_cmp_evt = NULL,
 .app_on_ral_size_ind = NULL,
 .app_on_ral_addr_ind = NULL,
#endif // (BLE_APP_SEC)
};

#if (BLE_APP_SEC)
static const struct app_bond_db_callbacks user_app_bond_db_callbacks = {
 .app_bdb_init = default_app_bdb_init,
 .app_bdb_get_size = default_app_bdb_get_size,
 .app_bdb_add_entry = default_app_bdb_add_entry,
 .app_bdb_remove_entry = NULL,
 .app_bdb_search_entry = default_app_bdb_search_entry,
 .app_bdb_get_number_of_stored_irks = default_app_bdb_get_number_of_stored_irks,
 .app_bdb_get_stored_irks = default_app_bdb_get_stored_irks,
 .app_bdb_get_device_info_from_slot = default_app_bdb_get_device_info_from_slot,
};

Defining user_app_on_pairing_succeeded as a function that starts a 5 second timer which upon expiration calls app_easy_gap_disconnect

void to_disconnect(void)
{
 app_easy_gap_disconnect(app_connection_idx);	
}
void user_app_on_pairing_succeeded(uint8_t conidx)
{
 app_easy_timer(500, to_disconnect);	
 default_app_on_pairing_succeeded(conidx);
}