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esp_ble_gattc_read_multiple_variable() function
Read multiple variable length characteristic values.
Syntax
esp_err_t esp_ble_gattc_read_multiple_variable(esp_gatt_if_t gattc_if,
uint16_t conn_id,
esp_gattc_multi_t *read_multi,
esp_gatt_auth_req_t auth_req);
Implemented in ![]()
esp_gattc_api.c:551
Return value
- ESP_OK: Success - ESP_ERR_INVALID_STATE: The connection has not been established. - ESP_FAIL: Failure due to other reasons
Notes
1. This function triggers `ESP_GATTC_READ_MULTI_VAR_EVT`. 2. This function should be called only after the connection has been established.