1 /* 2 * Copyright (c) 2022 HiSilicon (Shanghai) Technologies CO., LIMITED. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef IOT_MAIN_H 17 #define IOT_MAIN_H 18 19 typedef void (*fnMsgCallBack)(int qos, const char *topic, const char *payload); 20 21 /** 22 * This is the iot main function. Please call this function first 23 */ 24 int IoTMain(void); 25 /** 26 * Use this function to set the message call back function, when some messages comes, 27 * the callback will be called, if you don't care about the message, set it to NULL 28 */ 29 int IoTSetMsgCallback(fnMsgCallBack msgCallback); 30 /** 31 * When you want to send some messages to the iot server(including the response message), 32 * please call this api 33 * @param qos: the mqtt qos,:0,1,2 34 * @param topic: the iot mqtt topic 35 * @param payload: the mqtt payload 36 * 37 * @return 0 success while others failed 38 * 39 * @instruction: if success means we write the message to the queue susccess, 40 * not means communicate with the server success 41 */ 42 int IotSendMsg(int qos, const char *topic, const char *payload); 43 44 #endif /* IOT_MAIN_H_ */