RE: notification nrf52832 data rate

1730143 — Fri, 28 Jun 2019 02:29:52 GMT

it works when i increase hvn_tx_queue_size ,thanks ^_^

RE: notification nrf52832 data rate

1730143 — Thu, 27 Jun 2019 07:19:25 GMT

thanks for your reply, i will try

RE: notification nrf52832 data rate

Vidar Berg — Fri, 15 Mar 2019 08:53:41 GMT

Hi,

The NRF_ERROR_RESOURCES error indicates that the notification queue has become full. If you get this error, you need to wait for the BLE_GATTS_EVT_HVN_TX_COMPLETE event before attempting to add more packets to the queue. You can also increase the notification queue size when you enable the Softdevice, see ble_gatts_conn_cfg_t::hvn_tx_queue_size.

I'm not sure why you only get 8KB/s with the current setup though. Maybe you can try to increase the connection interval and NRF_SDH_BLE_GAP_EVENT_LENGTH to 50 ms to see if that helps. The Softdevice specification includes some throughput numbers achievable with certain connection parameters to give an idea of what you can expect (link).