ESP32 Forum

Hi
I am trying to create a service and characteristic with 128 bit UUID. I am using gatt_server_service_table_demo (in table services and characteristic are 16 bit in example code) . I have changed the service to 128 bit in gatt tab but after that service is not getting discovered. Please let me know how I can declare services and characteristic with 128 bit UUID or I have to use esp_ble_gatts_create_service function.

Hi
as I told I am not able to create services and characteristic of 128 bit UUID by declaring gatt_db array for example I am using a 128 bit service as below

// Service Declaration
[IDX_SVC] =
{{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_128, (uint8_t *)service_uuid, ESP_GATT_PERM_READ,
ESP_UUID_LEN_128, sizeof(service_uuid), (uint8_t *)service_uuid}}

service_uuid contains 128 bit UUID in an array.
Which is not working. Please let me know the correct way to declare 128 bit UUID

Any Update On this ???

Here you have nice tutorial with info you need:
https://github.com/espressif/esp-idf/bl ... bute-table

You changed this initialization too much:

(uint8_t *)&primary_service_uuid: UUID to identify the service as a primary one (0x2800).