Im trying to use base example to using Nimble:
Code: Select all
...
static const struct ble_gatt_svc_def gatt_svcs[] = {
{.type = BLE_GATT_SVC_TYPE_PRIMARY,
.uuid = BLE_UUID16_DECLARE(0x180), // Define UUID for device type
.characteristics = (struct ble_gatt_chr_def[]){
{.uuid = BLE_UUID16_DECLARE(0xFEF4), // Define UUID for reading
.flags = BLE_GATT_CHR_F_READ,
.access_cb = device_read},
{.uuid = BLE_UUID16_DECLARE(0xDEAD), // Define UUID for writing
.flags = BLE_GATT_CHR_F_WRITE,
.access_cb = device_write},
{0}}},
{0}
};
....
nvs_flash_init(); // 1 - Initialize NVS flash using
esp_nimble_hci_init(); // 2 - Initialize ESP controller
nimble_port_init(); // 3 - Initialize the host stack
ble_svc_gap_device_name_set("BLE-Server"); // 4 - Initialize NimBLE configuration - server name
ble_svc_gap_init(); // 4 - Initialize NimBLE configuration - gap service
ble_svc_gatt_init(); // 4 - Initialize NimBLE configuration - gatt service
ble_gatts_count_cfg(gatt_svcs); // 4 - Initialize NimBLE configuration - config gatt services
ble_gatts_add_svcs(gatt_svcs); // 4 - Initialize NimBLE configuration - queues gatt services.
ble_hs_cfg.sync_cb = ble_app_on_sync; // 5 - Initialize application
nimble_port_freertos_init(host_task); // 6 - Run the thread
Please, explain me how to add another one characteristic to existing service when the ESP32 is already working.
I don't ask about 2 characteristic from start. I need to add new characteristic during runtime.