| commit | author | age | ||
| 29b331 | 1 | /******************************************************************************** |
| GW | 2 | * Copyright: (C) 2022 LingYun IoT System Studio |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * Filename: packet.h | |
| 6 | * Description: This head file is packet API functions. | |
| 7 | * | |
| 8 | * Version: 1.0.0(18/04/22) | |
| 9 | * Author: Guo Wenxue <guowenxue@gmail.com> | |
| 10 | * ChangeLog: 1, Release initial version on "18/04/22 16:24:40" | |
| 11 | * | |
| 12 | ********************************************************************************/ | |
| 13 | ||
| 14 | ||
| 15 | #ifndef _PACKET_H_ | |
| 16 | #define _PACKET_H_ | |
| 17 | ||
| 18 | #include <stdint.h> | |
| 19 | #include <time.h> | |
| 20 | ||
| 21 | #define DEVID_LEN 16 | |
| 22 | #define TIME_LEN 32 | |
| 23 | ||
| 24 | typedef struct pack_info_s | |
| 25 | { | |
| 26 | char devid[DEVID_LEN]; /* device ID */ | |
| 27 | struct tm sample_time; /* sample time */ | |
| 28 | float temper; /* sample temperature */ | |
| 29 | } pack_info_t; | |
| 30 | ||
| 31 | /* packet function pointer type */ | |
| 32 | typedef int (* pack_proc_t)(pack_info_t *pack_info, char *pack_buf, int size); | |
| 33 | ||
| 34 | /* description: get device ID | |
| 35 | * input args: | |
| 36 | * $devid : device ID string | |
| 37 | * $size : device ID output buffer size | |
| 38 | * $sn : serial number | |
| 39 | * return value: <0: failure 0:ok | |
| 40 | */ | |
| 41 | extern int get_devid(char *devid, int size, int sn); | |
| 42 | ||
| 43 | /* description: get current system in struct tm | |
| 44 | * input args: | |
| 45 | * $sample_time: sample time in struct tm | |
| 46 | * return value: <0: failure 0:ok | |
| 47 | */ | |
| 48 | extern int get_time(struct tm *sample_time); | |
| 49 | ||
| 50 | /* description: package a string packet in format "devid|time|temper" | |
| 51 | * input args: | |
| 52 | * $pack_info: packet data contains devid, time and temperature | |
| 53 | * $pack_buf : packet output buffer | |
| 54 | * $size : packet output buffer size | |
| 55 | * return value: <0: failure >0: packet bytes | |
| 56 | */ | |
| 57 | extern int packet_segmented_pack(pack_info_t *pack_info, char *pack_buf, int size); | |
| 58 | ||
| 59 | ||
| 60 | /* description: package a json string packet: {"devid":"xxx", "time":"xxx", "temperature":"xxx"} | |
| 61 | * input args: | |
| 62 | * $pack_info: packet data contains devid, time and temperature | |
| 63 | * $pack_buf : packet output buffer | |
| 64 | * $size : packet output buffer size | |
| 65 | * return value: <0: failure >0: packet bytes | |
| 66 | */ | |
| 67 | extern int packet_json_pack(pack_info_t *pack_info, char *pack_buf, int size); | |
| 68 | ||
| 69 | ||
| 70 | #endif /* ----- #ifndef _PACKET_H_ ----- */ | |
