Hello,
I am working with nrf5281 and its bluetooth connection, the connection is established well and the chip and the nrf connect application stay connected, however the connection is lost after about 18 hours or so, what I want to achieve is to keep the connection for several days or weeks.
I have not been able to debug for the same reason that the disconnection occurs too long after the connection is established.
I leave here the parameters that I am using for the connection, I would like to know if to achieve the connection for several days can be accomplished only by changing some of these parameters.
#define APP_ADV_INTERVAL 625 #define BATTERY_LEVEL_MEAS_INTERVAL APP_TIMER_TICKS(5000) #define APP_ADV_DURATION 8000 #define APP_BLE_OBSERVER_PRIO 3 #define APP_BLE_CONN_CFG_TAG 1 #define MIN_CONN_INTERVAL MSEC_TO_UNITS(100, UNIT_1_25_MS) #define MAX_CONN_INTERVAL MSEC_TO_UNITS(200, UNIT_1_25_MS) #define SLAVE_LATENCY 0 #define CONN_SUP_TIMEOUT MSEC_TO_UNITS(6000, UNIT_10_MS) #define FIRST_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(5000) #define NEXT_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(30000) #define MAX_CONN_PARAMS_UPDATE_COUNT 5 #define SEC_PARAM_BOND 1 #define SEC_PARAM_MITM 0 #define SEC_PARAM_LESC 0 #define SEC_PARAM_KEYPRESS 0 #define SEC_PARAM_IO_CAPABILITIES BLE_GAP_IO_CAPS_NONE #define SEC_PARAM_OOB 0 #define SEC_PARAM_MIN_KEY_SIZE 7 #define SEC_PARAM_MAX_KEY_SIZE 16
static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context)
{
bool erase_bonds;
switch (p_ble_evt->header.evt_id)
{
case BLE_GAP_EVT_DISCONNECTED:
buttons_leds_init(&erase_bonds);
sleep_mode_enter();
break;
case BLE_GAP_EVT_CONNECTED:
bsp_indication_set(BSP_INDICATE_CONNECTED);
m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
nrf_ble_qwr_conn_handle_assign(&m_qwr, m_conn_handle);
break;
default:
break;
}
}
