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esp_ble_gattc_get_db() function
Get the GATT database elements
Syntax
esp_gatt_status_t esp_ble_gattc_get_db(esp_gatt_if_t gattc_if,
uint16_t conn_id,
uint16_t start_handle,
uint16_t end_handle,
esp_gattc_db_elem_t *db,
uint16_t *count);
Return value
- ESP_OK: Success - ESP_GATT_INVALID_HANDLE: Invalid GATT `start_handle`, `end_handle` - ESP_GATT_INVALID_PDU: NULL pointer to `db` or NULL pointer to `count` or the count value is 0 - ESP_FAIL: Failure due to other reasons
Notes
1. This API does not trigger any event. 2. `start_handle` must be greater than 0, and smaller than `end_handle`.