indication issue

RE: indication issue

Petter Myhre — Fri, 24 Feb 2017 14:28:06 GMT

Looks like you are using it correctly. Are you sure you are using the correct connection handle and attribute handle? Are you checking the returned error code of sd_ble_gatts_value_get()? Is it 0x00000000, NRF_SUCCESS? Are you sure that CCCD value is not 0x0000? What is the len of the returned value? Is gatts_value.len 2?

RE: indication issue

annapalu — Fri, 24 Feb 2017 14:09:10 GMT

if i understand correctly the sd_ble_gatts_value_get() allows me to understand if the app is available to receive the indication, but if i use it the value of ccd is always 0. Maybe, i wrong pass the parameter in the function. This is my code:

void DataLog_SVC_SendEvent(uint8_t typeLog, uint8_t craving, uint32_t timestamp,uint8_t crc) {

ble_data_log_service_user_log_t data; ble_gatts_value_t gatts_value; ble_data_log_service_evt_type_t evt_type;

uint32_t err_code;

data.flags=typeLog;

data.craving = craving;

data.time = timestamp;

data.crc_8 = crc;

err_code = sd_ble_gatts_value_get(m_datalog.conn_handle,m_datalog.user_log_handles.cccd_handle,&gatts_value);

// ble_srv_is_indication_enabled(m_datalog.user_log_handles.cccd_handle);

err_code = ble_data_log_service_user_log_send(&m_datalog,&data);

// APP_ERROR_CHECK(err_code); }

RE: indication issue

Petter Myhre — Fri, 24 Feb 2017 13:29:32 GMT

Yes. I know. What is the problem?

RE: indication issue

annapalu — Fri, 24 Feb 2017 13:26:49 GMT

sd_ble_gatts_value_get() is the third option of your link. " 3. Read the value of the CCCD using sd_ble_gatts_value_get(), and check whether it is 0x0001 (Notification) or 0x0002 (Indication)."

RE: indication issue

Petter Myhre — Fri, 24 Feb 2017 12:12:02 GMT

What is that you don't understand with sd_ble_gatts_value_get()? Please be more specific.

RE: indication issue

annapalu — Fri, 24 Feb 2017 11:37:33 GMT

Hi Petter,

i need to send my log when the app is connect to device. My log is send with indication because i need to know is all is received from app. But i need know if the cccd is enable from client, i don't understand how the sd_ble_gatts_value_get() works.

RE: indication issue

Petter Myhre — Fri, 24 Feb 2017 11:29:57 GMT

You need to be more specific. What is it that you want explained?

You second question seems to be answered here.