Changing service depending on state

RE: Changing service depending on state

darkkat — Tue, 06 Nov 2018 11:30:51 GMT

I found a way to run two services at the same time, so no need to make them run one of two depends on condition.

This post helped me a lot: devzone.nordicsemi.com/.../merging-two-ble-examples-together

RE: Changing service depending on state

darkkat — Tue, 06 Nov 2018 08:06:15 GMT

What you can check - is take CUS project and just add

#include "ble_nus.h"
#include "app_uart.h"
#include "app_util_platform.h"

BLE_NUS_DEF(m_nus);

and it should brake the project - data to board will come and from board will not.

Or take NUS project and add

#include "ble_nus.h" - from a Github example

BLE_CUS_DEF(m_cus);

and this way connection will fail.

RE: Changing service depending on state

darkkat — Mon, 05 Nov 2018 14:59:49 GMT

When I have two separate projects - each wprks like a charm.
If I add initialisation of CUS to NUS, NUS fails to connect - but dev kit indicates as connected (light continiously on, not blinking).
If I add initialisation of NUS to CUS, CUS connects, data is received by board but when I try to send the data from board by notify, it works one time and then core helds.

I added two services to the code and it failed to work, so I rolled back each step to make it work again, and this step was adding BLE_CUS_DEF(m_cus) or BLE_NUS_DEF(m_nus).

RE: Changing service depending on state

Kenneth — Mon, 05 Nov 2018 12:17:38 GMT

I don't know what may be failing here, a few things I would need to understand what may be failing:

Does it connect as expected, does the discovery of services occur as expected, do the service and characteristic handles change after adding another service, is there any asserts, does BLE_GATTS_EVT_WRITE occur as expected (to enable CCCD or write to the rx handle), does the sd_ble_gatts_hvx() return any error code and does BLE_GATTS_EVT_HVN_TX_COMPLETE occur?

Best regards,
Kenneth

RE: Changing service depending on state

darkkat — Mon, 05 Nov 2018 11:54:48 GMT

Already tried that, nothing changed. Allowed two services, increased memory - this changes are still in project.

RE: Changing service depending on state

Kenneth — Mon, 05 Nov 2018 11:50:47 GMT

[quote user=""]I know that I can't run two 128-bit services at one time[/quote]

Sure you can, but you need to increase NRF_SDH_BLE_VS_UUID_COUNT to 2, and in addition increase ram base (ram used by the softdevice).

Best regards,
Kenneth