SERVICE HANDLE OF NUS

RE: SERVICE HANDLE OF NUS

jing — Fri, 06 Aug 2021 02:35:07 GMT

\nRF5_SDK_17.0.2_d674dde\examples\ble_peripheral\ble_app_uart\main.c

static void nus_data_handler(ble_nus_evt_t * p_evt)
{
if (p_evt->type == BLE_NUS_EVT_COMM_STARTED)
{
/* TX Characteristic notification enabled */
}
else if (p_evt->type == BLE_NUS_EVT_COMM_STOPPED)
{
/* TX Characteristic notification disabled */
}

jing

RE: SERVICE HANDLE OF NUS

Herb Gingold — Mon, 02 Aug 2021 14:40:56 GMT

Jing, thank you for your reply, can you show an example of an implementation, I cannot determine what to do at my current nordic skill level from your comment.

Herb

RE: SERVICE HANDLE OF NUS

jing — Mon, 02 Aug 2021 05:05:49 GMT

you can just handle BLE_NUS_EVT_COMM_STARTED (on notification enabled) and BLE_NUS_EVT_COMM_STOPPED (on notification disabled) event type from your registered nus callback.

jing

RE: SERVICE HANDLE OF NUS

Herb Gingold — Sun, 01 Aug 2021 12:18:48 GMT

No one responded to this, but I found the handle, really obscure documentation and beyond sketchy examples.

Now that I found this, and got it to compile, it does not return a value, what am I doing wrong here:

if ( Device_Connected && filter_pointer == FILTER_LENGTH)
{
uint16_t length = 7u;
uint8_t p_bull = NULL;
ble_gatts_value_t pval;
*pval.p_value = p_bull;

err_code = sd_ble_gatts_value_get(m_conn_handle, m_nus.tx_handles.cccd_handle, &pval);
uint8_t p_temp = *pval.p_value;
if ( p_temp&0x01 )
{
do{
err_code = ble_nus_data_send(&m_nus, ble_buffer, &length, m_conn_handle);
if ((err_code != NRF_ERROR_INVALID_STATE) && (err_code != NRF_ERROR_NOT_FOUND))
{
APP_ERROR_CHECK(err_code);
}
} while (err_code == NRF_ERROR_RESOURCES);
}
}
if(filter_pointer == FILTER_LENGTH){filter_pointer = false;}
}