NRF52832 NUS multirole Test

[cjb21]

[Edvin]

Hello,

What SDK version do you use? Can you check what the on_adv_report() does when it picks up the advertisements from the phone? You can also see inside this function what it is looking for, whether it is a UUID or an advertising name (or something else). 

It is a bit hard to pinpoint exactly where it checks for this, as it differs between the different SDK versions, but do a search for "on_adv_rep" in your project, and see if you can find out what function that is called when the scanner receives an advertisement report.

[cjb21]

Thank you for answer.
I am using s132 on pca10040 in version 15.3.
I am using the nrf52832 chip.

It is difficult to verify that the on_adv_rep function works
Peripheral is the uart, Central is the.
I tried to match UUID and device_name but it does not work. Help

[Edvin]

In the case where it doesn't work, what does ble_nus_data_send() return?

[cjb21]

Hi

A. <ble_app_lbs_nus_its_multi_role> example  

Returns 5

B. <ble_app_lbs_nus> example >   [Normal operation example]

Returns 0

[Edvin]

As long as it doesn't return 0, the message is not sent.

Can you check where in ble_nus_data_send it returns 5? 5 = NRF_ERROR_NOT_FOUND. It should be in ble_nus.c. Either it is 

    if ((conn_handle == BLE_CONN_HANDLE_INVALID) || (p_client == NULL))
    {
        return NRF_ERROR_NOT_FOUND;
    }

or the softdevice call:

return sd_ble_gatts_hvx(conn_handle, &hvx_params);

It may be easiest to debug and set breakpoints to figure out which one it is, since NRF_LOG is not enabled by default. Alternatively you can enable it by setting BLE_NUS_CONFIG_LOG_ENABLED to 1 in sdk_config.h to be able to use NRF_LOG_INFO in ble_nus.c.

It is a bit tricky to port the ble_app_uart example to support multiple connections. You have to handle all your connection handles correctly. I suggest you take a look in the ble_app_multiperipheral example in SDK\examples\ble_peripheral\experimental\ble_app_multiperipheral.

Especially in the on_connected() funtion in main, where nrf_ble_qwr_conn_handle_assign() is called in this example. The conn handles is an array. It should be the same in your example. You can also see how it uses the connection handle in led_status_send_to_all().

Best regards,

Edvin

[cjb21]

Thank you for answer.

Found a place to return 5. Within the ble_nus.c file.

This is the statement in the ble_nus_data_send () function.

err_code = blcm_link_ctx_get (p_nus-> p_link_ctx_storage, conn_handle, (void *) & p_client);

See the screenshot below.

Thank you

[Edvin]

Yes. It is the reason I explained in the previous answer. You are not sending a valid connection handle into ble_nusdata_send(). Look at the multiperipheral example how it should be done.

[cjb21]

Thank you. Where can I get a multiperipheral example?

[Edvin]

Edvin said:

SDK\examples\ble_peripheral\experimental\ble_app_multiperipheral.

[Jimmy Wong]

HI Cjb21,

Please tell me which example do you use from my github.

and then how to reproduce sequence .

[cjb21]

Thank you for your reply.

 The project url you used on your github.

 https://github.com/jimmywong2003/nrf5-ble-multiple-role-example

 Two examples were downloaded and tested on the nrf52832 dk board.

 I used sdk 15.3.

 I have connected nrf52832 board and iphone7 (app: nrf toolbox).

 I want to send and receive data in both directions using uart terminal. 

But The <ble_app_lbs_nus_its_multi-role> example doesn't seem to be normal.

I used nrf52832(pca10040/s132) board.

 

 

A. Example <ble_app_lbs_nus_its_multi_role> and the Mobile Connection Screen

<ble_app_lbs_nus_its_multi_role/nrf52832(Peripheral mode)>

In the uart terminal, I typed "data send" on the keyboard.

(Tx "DATA SEND") 

<NRF TOOLBOX(ios)> (Central)

not reveive 

B. Example <ble_app_lbs_nus> and the Mobile Connection Screen

<ble_app_lbs_nus/nrf52832(Peripheral)>

In the uart terminal, I typed "data send" on the keyboard.

(Tx "DATA SEND")

<NRF TOOLBOX(ios)> (Central)

reveived "data send"

C.

There are additional issues involved.


Two NRF52832 DK boards were used.
On the first NRF52832 DK board
I downloaded the <ble_app_lbs_nus_its_multi_role> example.
On the second board I downloaded ble_app_lbs_nus.
<ble_app_lbs_nus_its_multi_role> was used in CENTRAL mode.
I set <ble_app_lbs_nus> to Peripheral.
The connection was successful.
However,
Using UART terminal
<ble_app_lbs_nus_its_multi_role> Sent data to the board.
<ble_app_lbs_nus> No data is received on the board.
In my opinion, the ble_nus_data_send () function seems to have a problem 
in the ble_app_lbs_nus_its_multi_role example.

Thanks to Jimmy, the development went smoothly.

Please, reply.

thank you.
Have a nice day

[Edvin]

Did you solve the issue where ble_nus_data_send() returned 5?