Hello, I found that my device is more prone to disconnection due to 0x8. And I saw the log and found that most of the disconnected cases were immediately disconnected as soon as they were connected. I captured some air packets, please help to analyze, thank you!
Some of my bluetooth parameters are:：
#define MIN_CONN_INTERVAL MSEC_TO_UNITS(40, UNIT_1_25_MS) /**< Minimum acceptable connection interval (20 ms), Connection interval uses 1.25 ms units. */ #define MAX_CONN_INTERVAL MSEC_TO_UNITS(75, UNIT_1_25_MS) /**< Maximum acceptable connection interval (75 ms), Connection interval uses 1.25 ms units. */ #define SLAVE_LATENCY 2 /**< Slave latency. */ #define CONN_SUP_TIMEOUT MSEC_TO_UNITS(5000, UNIT_10_MS) /**< Connection supervisory timeout (4 seconds), Supervision Timeout uses 10 ms units. */ #define FIRST_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(5000) /**< Time from initiating event (connect or start of notification) to first time sd_ble_gap_conn_param_update is called (5 seconds). */ #define NEXT_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(30000) /**< Time between each call to sd_ble_gap_conn_param_update after the first call (30 seconds). */ #define MAX_CONN_PARAMS_UPDATE_COUNT 3 /**< Number of attempts before giving up the connection parameter negotiation. */
My parameter is to perform the update 5s after the connection is successful. If I change the 5s to a smaller value, such as 1.5s, can this situation be improved, and will it introduce new problems?
Here is a partial air packet I captured
22:15:52
another ： 01:31:42
