Dear Forum Users,
I am trying to send the data in a burst. Thanks to this post I have managed to achieve ~2,5 kB/s. However this lasts only for few seconds. Then the stream is 4 packets long after which occurs a short break. This happens cyclically from then on and results in transfer drop to 80-160 B/s.
Could this be caused by the fact of using different SDK? Why is it so and how can it be improved?
The sending function heart_rate_meas_timeout_handler in nRF5 DK is a timer handler, so I stop the timer using app_timer_stop(). I have noticed that stopping battery_level_meas also causes the system working slowly.
Thank you for your help!
static void heart_rate_meas_timeout_handler(void )
{
static uint32_t cnt = 0;
uint32_t err_code;
uint16_t heart_rate;
err_code = app_timer_stop(m_heart_rate_timer_id);
APP_ERROR_CHECK(err_code);
heart_rate = (uint16_t)sensorsim_measure(&m_heart_rate_sim_state, &m_heart_rate_sim_cfg);
while(true)
{
if (cnt < 300)
{
err_code = ble_hrs_heart_rate_measurement_send(&m_hrs, cnt);
if (err_code == BLE_ERROR_NO_TX_PACKETS ||
err_code == NRF_ERROR_INVALID_STATE ||
err_code == BLE_ERROR_GATTS_SYS_ATTR_MISSING)
{
break;
}
else if (err_code != NRF_SUCCESS)
{
APP_ERROR_HANDLER(err_code);
}
cnt++;
}
in on_ble_evt():
case BLE_EVT_TX_COMPLETE:
heart_rate_meas_timeout_handler();
break;
