158 lines
3.5 KiB
Markdown
158 lines
3.5 KiB
Markdown
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# IRIS通讯协议 V1.0
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### 帧格式:
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| 帧头 | 命令类型 | 长度 | Data | Check |
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| :-------: | :-----------: | :----: | :--: | :-----------: |
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| 0x55 0xAA | Command 1字节 | 两字节 | Data | crc校验 2字节 |
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- **帧头**:固定的0x55 0xAA 两个字节
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- **命令类型**:一个字节
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- 0x01: 命令为字符串 即Data要转换为字符串
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- 0x00: 命令为json数据,应用json解析Data
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- 0x02-0xff:自定义二进制通讯数据,Data的解析应改按照Communication_Protocol中约定进行
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- **长度**:Data+Check的总字节数
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- **Check**:长度+Data的 CRC校验 算法在Communication_Protocol提供了(如果Data过长,光谱数据,可以不计算,但是得提供,此时提供内容为0xEE 0xEE)
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- **均采用小端方式存储**
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### json 定义
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json定义比较灵活 但是根对象必须提供如下:
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- CN: 命令名称
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- PA:命令参数 //发送时必须 返回可选
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返回时应提供相应状态
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- ST:OK
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发送示例:
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```json
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{
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"CN":"SetCamerTime",
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"PA":{
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"time1":1000,
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"time2":1000
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},
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"Other":"自己定义"
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}
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```
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接收示例
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```json
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{
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"CN":"SetCamerTime",
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"Other":"自己定义",
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"ST":"OK"
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}
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```
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### Communication_Protocol.h及.c
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该文件主要定义了命令的名称 以#define方式进行。并且在末尾提供了一些通用函数 如下
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```c
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#ifndef COMMUNICATION_PROTOCOL_H
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#define COMMUNICATION_PROTOCOL_H
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#include <stdint.h>
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#include <Communication_struct.h>
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// DEFINE The protocol Here
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//Forexample
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// #define MYCOMAN 0x02 //命令全大写
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// todo : define your protocol here
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/*-------------------------------------------------------------------------------------------------------------*/
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/*-------------------------------------------------------------------------------------------------------------*/
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/*
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在此之下开始定义一些函数
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*/
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// 成功返回打包后的数据长度
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// -1: Error
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// 成功返回打包后的数据长度
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int32_t IRIS_Protocol_Pack(uint8_t Command,uint16_t LenthofIn, uint8_t *BufferIn, uint8_t *PackData);
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// 成功返回解包后的数据长度
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// 0: 该命令返回无参数
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// -1: checksum error
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// -100: parameter error
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// -200: header error
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// -300: command error
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// -400: length error
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// 成功返回解包后的数据长度
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int32_t IRIS_Protocol_Unpack(uint8_t *PackData, uint16_t LenthofIn, uint8_t Command, uint8_t *BufferOut);
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// 定义裁切命令
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// 成功返回裁切后的数据长度
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// -1: Error
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int32_t IRIS_Cut_Befor_Header(uint8_t *PackData, uint16_t LenthofIn );
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// 返回CRC校验值
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uint16_t IRIS_calcCRC(const void *pBuffer, uint16_t bufferSize);
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#endif
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```
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### Communication_struct.h
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该文件主要定义了命令相关参数部分的定义 所有参数都应该以结构体定义 无需参数的不定义 具体如下
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```c
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#ifndef COMMUNICATION_STRUCT_H
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#define COMMUNICATION_STRUCT_H
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// Define your communication structures here
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// For example:
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/*
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如果发送和接受的数据结构一样,那么就定义一个结构体
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struct MyComan_struct //对应的命令结构体 小驼峰命名法+struct
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{
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uint8_t Command;
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uint16_t LenthofIn;
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};
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如果发送和接受的数据结构不一样,那么就分开定义
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struct MyComan_Send_struct //对应的命令结构体 小驼峰命名法+Send_struct
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{
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uint8_t Command;
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uint16_t LenthofIn;
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};
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struct MyComan_Recv_struct //对应的命令结构体 小驼峰命名法+Recv_struct
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{
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uint8_t Command;
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uint16_t LenthofOut;
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};
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*/
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#endif // COMMUNICATION_STRUCT_H
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```
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