Connection Interval data transfer slow

亲爱的对话框

I have changed the connection interval on a DA14583 dynamically using the code below

struct gapc_param_update_cmd * req = KE_MSG_ALLOC(GAPC_PARAM_UPDATE_CMD, TASK_GAPC, TASK_APP, gapc_param_update_cmd);

// Fill in the parameter structure
req->operation = GAPC_UPDATE_PARAMS;
if (do_fast) {
申请- >参数。intv_min = MS_TO_DOUBLESLOTS(10); // N * 1.25ms
申请- >参数。intv_max = MS_TO_DOUBLESLOTS(20); // N * 1.25ms
申请- >参数。time_out = MS_TO_TIMERUNITS(1250); // N * 10ms

}
else
{
申请- >参数。intv_min = MS_TO_DOUBLESLOTS(150); // N * 1.25ms
申请- >参数。intv_max = MS_TO_DOUBLESLOTS(200); // N * 1.25ms
申请- >参数。time_out = MS_TO_TIMERUNITS(6000); // N * 10ms
}
申请- >参数。latency = 0; // Conn Events skipped
ke_msg_send(req);

Now when I set the parameters to the slow values i.e 150,200,6000 and then through an iOS app write to around 4 bytes to a BLE characteristic, on the 14583, the data is received after around 4 seconds by the 14583. Is there a special mechanism to maintain the data transfer speed when we increase the connection interval or is this the expected behaviour.

Thanks and Regards