Increase data speed in NUS nRF52

RE: Increase data speed in NUS nRF52

Joakim Jakobsen — Fri, 04 Jun 2021 12:01:10 GMT

Do you have the same connection parameters as the throughput example?

You can read more about the example you tested here:
https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/ble_sdk_app_att_mtu.html

RE: Increase data speed in NUS nRF52

Sunil vignesh — Tue, 01 Jun 2021 08:40:35 GMT

Any update?

RE: Increase data speed in NUS nRF52

Sunil vignesh — Thu, 27 May 2021 17:42:31 GMT

Hi any update for previous message

i found this example in devzone

devzone.nordicsemi.com/.../ble_5F00_app_5F00_uart_5F00_throughput_5F00_test.zip

static void send_data()
{
    static uint8_t counter;
    static uint8_t data_array[BLE_NUS_MAX_DATA_LEN];

    uint32_t       err_code;
    uint16_t       length = m_ble_nus_max_data_len;

   
    err_code = ble_nus_data_send(&m_nus, data_array, &length, m_conn_handle);
    if (err_code == NRF_SUCCESS)
    {
         m_tot_num_bytes += length;
         data_array[0]=counter++;
    }

}

for the above lines i got nearly 282KBPS

I changed the lines to my defined one

static void send_data()
{
    static uint8_t counter;
    static uint8_t data_array[BLE_NUS_MAX_DATA_LEN];

    uint32_t       err_code;
    uint16_t       length = m_ble_nus_max_data_len,length1;
    char str[20];
    length1 = sprintf(str, "%d,%d\n",counter,counter+1);            
    err_code = ble_nus_data_send(&m_nus, str, &length1, m_conn_handle);            
    m_tot_num_bytes += length1;
    counter++;
}

I got 23KBPS

How do I increase the speed of it ?

RE: Increase data speed in NUS nRF52

Sunil vignesh — Tue, 25 May 2021 13:49:00 GMT

1. Is there any hardware to measure the BLE transfer speed?

2. Does BLE Transfer speed is differ from BLE Services like LBS,NUS or custom services ?

RE: Increase data speed in NUS nRF52

Joakim Jakobsen — Tue, 25 May 2021 10:34:52 GMT

Hi again.

Hard to say if you can expect higher transfer rate if we don't have information about what you are currently seeing.

Is it possible that you can measure the transfer speed?

Br,
Joakim

RE: Increase data speed in NUS nRF52

Sunil vignesh — Mon, 24 May 2021 06:25:40 GMT

Hi any update?

RE: Increase data speed in NUS nRF52

Sunil vignesh — Thu, 20 May 2021 11:08:28 GMT

Ah. Not using any speed measurement utility, if there is any of the speed measurement utility is available, kindly let me know I can measure it. But now as visualising it I'm not satisfied with the speed.

RE: Increase data speed in NUS nRF52

Joakim Jakobsen — Thu, 20 May 2021 10:26:20 GMT

Hi.

Have you done any measurement on the speed of the transfer? What kind of speed are you seeing?