Hi, Do the S140 version 6.1.1 SoftDevice does have full support for S=2(500 kbps) ?

[jawadk]

if yes how can i choose between S=2 and S=8, where the change should take place, at the advertising init ?

[AndreasF]

Hi.

SoftDevice S140 version 6.1.0 is able to receive at 125 kbps (S=8) and 500 kbps (S=2). But it can only transmit at 125 kbps (S=8).

These rates are fixed, you only have to set your scanning or advertising phys to BLE_GAP_PHY_CODED,

Like this in nRF5_SDK_15.2.0_9412b96\examples\ble_peripheral\ble_app_blinky\main.c :

Line 256:
adv_params.primary_phy     = BLE_GAP_PHY_1MBPS;

Change this line to:

adv_params.primary_phy     = BLE_GAP_PHY_CODED;

For scanning, you should for example in nRF5_SDK_15.2.0_9412b96\examples\ble_central\ble_app_gatts\, edit scan_phys in m_scan_param in main.c

FROM THIS:

/**< Scan parameters requested for scanning and connection. */
static ble_gap_scan_params_t const m_scan_param =
{
    .active        = 0x01,
    .interval      = NRF_BLE_SCAN_SCAN_INTERVAL,
    .window        = NRF_BLE_SCAN_SCAN_WINDOW,
    .filter_policy = BLE_GAP_SCAN_FP_WHITELIST,
    .timeout       = SCAN_DURATION_WITELIST,
    .scan_phys     = BLE_GAP_PHY_1MBPS,
};

TO THIS:

/**< Scan parameters requested for scanning and connection. */
static ble_gap_scan_params_t const m_scan_param =
{
    .active        = 0x01,
    .interval      = NRF_BLE_SCAN_SCAN_INTERVAL,
    .window        = NRF_BLE_SCAN_SCAN_WINDOW,
    .filter_policy = BLE_GAP_SCAN_FP_WHITELIST,
    .timeout       = SCAN_DURATION_WITELIST,
    .scan_phys     = BLE_GAP_PHY_CODED,
};

Best regards,

Andreas

[jawadk]

I am using the ble uart c example 

and ble uart example for the next one

each with s140_nrf52_6.1.1_softdevice.hex

tried to add the code from nRF5_SDK_15.2.0_9412b96\examples\ble_central\ble_app_gatts\ to the my  ble uart c example , talking about the scan_init and scan_start functions

that is not working !

the functions d_ble_gap_scan_start() returns error 0x0007 - Invalid Parameter

[jawadk]

Hi AndreasF , the ble central change worked , but the the ble peripheral didn't.

the change in ble app blinky causes the sd_ble_gap_adv_set_configure() function to return error code 7 , think it is a NRF_ERROR_INVALID_PARAM

what should i change also to make this works for the central and the peripheral ?

[AndreasF]

Hi.

What do you have in your ble_gap_adv_data_t and ble_gap_adv_params_t structs?

Do you use a whitelist?

NRF_ERROR_INVALID_PARAM occurs when a invalid parameter is supplied to the function call:

 * @retval ::NRF_ERROR_INVALID_PARAM                   Invalid parameter(s) supplied:
 *                                                      - Invalid advertising data configuration specified. See @ref ble_gap_adv_data_t.
 *                                                      - Invalid configuration of p_adv_params. See @ref ble_gap_adv_params_t.
 *                                                      - Use of whitelist requested but whitelist has not been set,
 *                                                        see @ref sd_ble_gap_whitelist_set.

Best regards,

Andreas

[jawadk]

Hi AndreasF,

i saw a solution in here: https://devzone.nordicsemi.com/f/nordic-q-a/37409/sdk15-long-advertising-and-long-range-connect?ReplySortBy=Votes&ReplySortOrder=Descending

used this example for the central: https://devzone.nordicsemi.com/cfs-file/__key/support-attachments/beef5d1b77644c448dabff31668f3a47-c6345b7a087b403b9c50bcb24fdeac27/ble_5F00_app_5F00_uart_5F00_c_5F00_lr.zip

and this example for the peripheral : https://devzone.nordicsemi.com/cfs-file/__key/support-attachments/beef5d1b77644c448dabff31668f3a47-c6345b7a087b403b9c50bcb24fdeac27/ble_5F00_app_5F00_uart_5F00_lr.zip

tested the result distance between two nrf52840 with long range and without (with the regular examples, ble_app_uart and ble_app_uart_c) , but i got the same result!

In both tests gives I got about 75 meters range between the two nrf52840.

in the two test i set the TX power to +8dBm

don't know what is the problem here.