Function esp_idf_svc::sys::esp_now_unregister_send_cb
source · pub unsafe extern "C" fn esp_now_unregister_send_cb() -> i32
Expand description
@brief Unregister callback function of sending ESPNOW data
@return - ESP_OK : succeed - ESP_ERR_ESPNOW_NOT_INIT : ESPNOW is not initialized