[−][src]Function esp_idf_bindgen::esp_now_unregister_send_cb
pub unsafe extern "C" fn esp_now_unregister_send_cb() -> esp_err_t
@brief Unregister callback function of sending ESPNOW data
@return - ESP_OK : succeed - ESP_ERR_ESPNOW_NOT_INIT : ESPNOW is not initialized