I've been slowly and incrementally adding changes to the ble_app_multilink_central example from nRF51-SDK-6.0.0. This is an exercise to understand where my other app stopped working.
As soon as I add app_timer.c to my project and also declare a timer id from the header file (which is just a uint32_t typedef) my central app breaks. I haven't added any timer init code at all. I've tested this dozens of times and it goes from a successful connection to an ASSERT every time.
Here is the debug output from a successful connection:
[APPL]:[0x00] >> DM_EVT_LINK_SECURED
[APPL]:[0x00] << DM_EVT_DEVICE_CONTEXT_LOADED
[APPL]:[0x00] >> DM_EVT_CONNECTION
[APPL]:[58 9D 13 DF B5 D5]: Connection Established
[APPL]:[CI 0x00]: Requesting GATT client create
[DB]: Starting discovery of service with UUID 0x4a30 for Connection handle 0
[APPL]:[0x00] << DM_EVT_CONNECTION
[DB]: Discovery of service with UUID 0x4a30 completed with success for Connectionhandle 0
[APPL]:[0x00] >> DM_LINK_SECURED_IND, result 0x00000000
[APPL]:[0x00] << DM_LINK_SECURED_IND
[APPL]:[0x00] >> DM_EVT_SECURITY_SETUP_COMPLETE, result 0x00000000
[APPL]:[0x00] << DM_EVT_SECURITY_SETUP_COMPLETE
[APPL]:[0x00] >> DM_EVT_DEVICE_CONTEXT_STORED
[APPL]:[0x00] << DM_EVT_DEVICE_CONTEXT_STORED
I add timer.c and the following line to main.c:
static app_timer_id_t m_soh_timer_id; /**< Advertisement sleep timer. */
and my connection setup looks like this:
[APPL]:[0x00] >> DM_EVT_LINK_SECURED
[APPL]:[0x00] << DM_EVT_DEVICE_CONTEXT_LOADED
[APPL]:[0x00] >> DM_EVT_CONNECTION
[APPL]:[58 9D 13 DF B5 D5]: Connection Established
[APPL]:[CI 0x00]: Requesting GATT client create
[APPL]: ASSERT: ..\client_handling.c, 86, error 0x00000011
The assert line indicated is from the following function:
/**@brief Function for service discovery.
*
* @param[in] p_client Client context information.
*/
static void service_discover(client_t * p_client)
{
uint32_t err_code;
p_client->state = STATE_SERVICE_DISC;
err_code = ble_db_discovery_start(&(p_client->srv_db),
p_client->srv_db.conn_handle);
APP_ERROR_CHECK(err_code);
}
The error returned is: NRF_ERROR_BUSY. Looking at the code, it appears that it believes that there is a discovery_in_progress
uint32_t ble_db_discovery_start(ble_db_discovery_t * const p_db_discovery,
uint16_t conn_handle)
{
if (p_db_discovery == NULL)
{
return NRF_ERROR_NULL;
}
if (!m_initialized)
{
return NRF_ERROR_INVALID_STATE;
}
if (m_num_of_modules_reg == 0)
{
// No user modules were registered. Hence no services to discover.
return NRF_ERROR_INVALID_STATE;
}
if (p_db_discovery->discovery_in_progress)
{
return NRF_ERROR_BUSY;
}
ble_db_discovery_srv_t * p_srv_being_discovered;
m_num_of_discoveries_made = 0;
m_pending_usr_evt_index = 0;
p_db_discovery->curr_srv_ind = 0;
p_db_discovery->conn_handle = conn_handle;
p_srv_being_discovered = &(p_db_discovery->services[p_db_discovery->curr_srv_ind]);
p_srv_being_discovered->srv_uuid = m_registered_modules[p_db_discovery->curr_srv_ind].srv_uuid;
DB_LOG("[DB]: Starting discovery of service with UUID 0x%x for Connection handle %d\r\n",
p_srv_being_discovered->srv_uuid.uuid, p_db_discovery->conn_handle);
uint32_t err_code;
err_code = sd_ble_gattc_primary_services_discover(p_db_discovery->conn_handle,
SRV_DISC_START_HANDLE,
&(p_srv_being_discovered->srv_uuid));
if (err_code != NRF_SUCCESS)
{
return err_code;
}
p_db_discovery->discovery_in_progress = true;
return NRF_SUCCESS;
}
I don't understand the cause/effect happening here! Has anyone else seen this or can't anyone shed any light into what's going on here?
Thank you for any insight.
