cccd enables to report errors

[peter.min]

Hi,

I'd like to set up cccd here, but test the error,

In the routine

nRF5_SDK_15.3.0_59ac345 nRF5_SDK_15.3.0_59ac345.0_59ac345.s.ble_peripheral?ble_app_uart/pca10040-s132-arm5_no_packs-ble_app_uart_pca10040_s132.uvprojx

How do I make a cccd in ?

Kind regards. Peter.Min

[peter.min]

1.APP_ERROR_CHECK（err_code）; err_code = 0x3401（= 13313）The corresponding function is:

err_code = ble_nus_data_send(&m_nus, data_array, &length, m_conn_handle);

2.

The notification code function is enabled for:
static void on_write (ble_nus_t s p_nus, ble_evt_t const s p_ble_evt)

The criteria for judging are:
else if (p_evt_write-handle- s-p_nus-rx_handles.value_handle)
(p_nus-data_handler!

The enable method is:
p_client-is_notification_enabled -true;

3.This event was not handled:
BLE_GATTS_EVT_SYS_ATTR_MISSING

This event sdk defaults to:
case BLE_GATTS_EVT_SYS_ATTR_MISSING:
No system attributes have had has stored.
err_code s sd_ble_gatts_sys_attr_set (m_conn_handle, NULL, 0, 0);
APP_ERROR_CHECK (err_code);
break;

4.

ble_evt_handler as follows

/**@brief Function for handling BLE events.
 *
 * @param[in]   p_ble_evt   Bluetooth stack event.
 * @param[in]   p_context   Unused.
 */
static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context)
{
    uint32_t err_code;

    switch (p_ble_evt->header.evt_id)
    {
        case BLE_GAP_EVT_CONNECTED:
            NRF_LOG_INFO("Connected");
            err_code = bsp_indication_set(BSP_INDICATE_CONNECTED);
            APP_ERROR_CHECK(err_code);
            m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
            err_code = nrf_ble_qwr_conn_handle_assign(&m_qwr, m_conn_handle);
            APP_ERROR_CHECK(err_code);
            break;

        case BLE_GAP_EVT_DISCONNECTED:
            NRF_LOG_INFO("Disconnected");
            // LED indication will be changed when advertising starts.
            m_conn_handle = BLE_CONN_HANDLE_INVALID;
            break;

        case BLE_GAP_EVT_PHY_UPDATE_REQUEST:
        {
            NRF_LOG_DEBUG("PHY update request.");
            ble_gap_phys_t const phys =
            {
                .rx_phys = BLE_GAP_PHY_AUTO,
                .tx_phys = BLE_GAP_PHY_AUTO,
            };
            err_code = sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys);
            APP_ERROR_CHECK(err_code);
        } break;

        case BLE_GAP_EVT_SEC_PARAMS_REQUEST:
            // Pairing not supported
            err_code = sd_ble_gap_sec_params_reply(m_conn_handle, BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP, NULL, NULL);
            APP_ERROR_CHECK(err_code);
            break;

        case BLE_GATTS_EVT_SYS_ATTR_MISSING:
            // No system attributes have been stored.
            err_code = sd_ble_gatts_sys_attr_set(m_conn_handle, NULL, 0, 0);
            APP_ERROR_CHECK(err_code);
            break;

        case BLE_GATTC_EVT_TIMEOUT:
            // Disconnect on GATT Client timeout event.
            err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gattc_evt.conn_handle,
                                             BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
            APP_ERROR_CHECK(err_code);
            break;

        case BLE_GATTS_EVT_TIMEOUT:
            // Disconnect on GATT Server timeout event.
            err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gatts_evt.conn_handle,
                                             BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
            APP_ERROR_CHECK(err_code);
            break;

        default:
            // No implementation needed.
            break;
    }
}

5.

1. In order to enable cccd in nrf52532, I modified the routine:
Project.nRF5_SDK_15.nRF5_SDK_15.0_59ac345?ble_peripheral?ble_app_uart?pca10040?s132-arm5_no_packs ble_app_uart_pca10040_s132.uvprojx

2. In the ble_app_uart routine I made the following modifications:

6.

Although I know that forced enable CCDCs in ble_peripheral do not meet the Bluetooth specification,
But I still want to force the ability to make a cccd ble_peripheral here.

My previously modified code does nuns that do not enforce the ability to make CCCD.

Please help me complete an example that can be forced to enable CCCD.

[Edvin]

peter.min said:

Although I know that forced enable CCDCs in ble_peripheral do not meet the Bluetooth specification,
But I still want to force the ability to make a cccd ble_peripheral here.

 Sorry. It doesn't work this way. The actual CCCD is stored in the softdevice, and you can't force it. The one that you try to force is just a copy of that flag which is used for the application layer logic. No way to force it from the peripheral.

You need to enable notifications from your central application.