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kw_charProtocol库说明
本库针对字符数据流类型设备，接收发送特定协议帧制作的微库。可以裸机运行，也可以配合实时操作系统运行。
本库开源连接地址：gitee连接
实现思路
本库采用C语言进行编程，方便移植，用户通过调用库接口函数即可使用。
以[YY6500传感器]为例，对应，该传感器采用串口作为通信接口。
主要接口函数如下：
| 项目 | 函数 | 功能 | 备注 |
|---|---|---|---|
| 1 | kw_CPInitPara | 初始化注册协议变量对象，包括： 1. 异步队列数组 2. 接收数组 3. 发送数组 | |
| 2 | kw_CPSetHead | 注册协议包头 | |
| 3 | kw_CPRegisterTailCB | 注册协议包尾 | |
| 4 | kw_CPRegisterCheckCB | 注册校验和回调 | |
| 5 | kw_CPRegisterFrameCB | 注册解完整数据包回调 | |
| 6 | kw_CPDecode | 周期解码 | |
| 7 | kw_CPReceiveByte | 接收字符流数据 |
主要变量如下
| 项目 | 变量 | 类型 | 说明 |
|---|---|---|---|
| 1 | _g_cpYY6500 | kw_charProtocol_s | 协议对象 |
| 2 | _g_YY6500Queue | 接收队列数组 | unsigned char[] |
| 3 | _g_YY6500RBuf | 接收数组缓存 | unsigned char[] |
| 4 | _g_Head | 包头 | unsigned char[] |
需要实现的协议接口如下：
| 项目 | 接口 | 说明 |
|---|---|---|
| 1 | _IsTail | 包尾判断 |
| 2 | _IsCheckOK | 校验和判断 |
| 3 | _frame | 完整数据包回调 |
测试代码
协议代码
#include "CP_YY6500.h"#ifdef CONFIG_KW_CPkw_charProtocol_s _g_cpYY6500;
unsigned char _g_YY6500Queue[128];
unsigned char _g_YY6500RBuf[128];
unsigned char _g_Head[1] = {0x16};
unsigned char _YY6500_Tmp[4] = {0};
cp_YY6500_e _g_YY6500_Flag = CP_YY6500_NONE;cp_YY6500_s _g_YY6500;static bool _IsTail(kw_frame_s *p, unsigned char in);
static bool _IsCheckOK(kw_frame_s *p);
static void _frame(kw_frame_s *p);void CP_YY6500Init()
{kw_CPInitPara(&_g_cpYY6500,_g_YY6500Queue, sizeof(_g_YY6500Queue),_g_YY6500RBuf, sizeof(_g_YY6500RBuf),0, 0);kw_CPSetHead(&_g_cpYY6500, _g_Head, sizeof(_g_Head));kw_CPRegisterTailCB(&_g_cpYY6500, _IsTail);kw_CPRegisterCheckCB(&_g_cpYY6500, _IsCheckOK);kw_CPRegisterFrameCB(&_g_cpYY6500, _frame);
}void CP_YY6500Decode()
{kw_CPDecode(&_g_cpYY6500);
}void CP_YY6500SendResult(cp_YY6500_e type, int (*send)(unsigned char *datas, unsigned int len))
{if (send != 0 && type < CP_YY6500_MAX && type > CP_YY6500_NONE){_YY6500_Tmp[0] = 0x11;_YY6500_Tmp[1] = 0x01;if(type == CP_YY6500_RESULT){_YY6500_Tmp[2] = 0x01;_YY6500_Tmp[3] = 0xED;}else if(type == CP_YY6500_VERSION){_YY6500_Tmp[2] = 0x1E;_YY6500_Tmp[3] = 0xD0;}else if(type == CP_YY6500_NO){_YY6500_Tmp[2] = 0x1F;_YY6500_Tmp[3] = 0xCF;}send(_YY6500_Tmp, 4);_g_YY6500_Flag = type;}
}void CP_YY6500Receive(unsigned char in)
{kw_CPReceiveByte(&_g_cpYY6500, in);
}static bool _IsTail(kw_frame_s *p, unsigned char in)
{return p->wIdx > 4 && p->wIdx == p->buf.buffer[1] + 2;
}static bool _IsCheckOK(kw_frame_s *p)
{unsigned char sum = 0;for (unsigned char i = 0; i < p->wIdx - 1; i++){sum += p->buf.buffer[i];}return (p->buf.buffer[p->wIdx - 1] + (sum)) & (0xFF) == 0xFF;
}static void _frame(kw_frame_s *p)
{if (_g_YY6500_Flag == CP_YY6500_RESULT){_g_YY6500.nongdu = (p->buf.buffer[3] << 8) + p->buf.buffer[4];_g_YY6500.liuliang = (p->buf.buffer[5] << 8) + p->buf.buffer[6];_g_YY6500.wendu = ((p->buf.buffer[7] << 8) + p->buf.buffer[8] - 500);_g_YY6500.res = (p->buf.buffer[9] << 8) + p->buf.buffer[10];_g_YY6500_Flag = CP_YY6500_NONE;}else if(_g_YY6500_Flag == CP_YY6500_VERSION){for (unsigned char i = 0; i < 8; i++){_g_YY6500.version[i] = p->buf.buffer[i + 3];}_g_YY6500_Flag = CP_YY6500_NONE;}else if(_g_YY6500_Flag == CP_YY6500_NO){for (unsigned char i = 0; i < 10; i++){_g_YY6500.NO[i] = p->buf.buffer[i + 3];}_g_YY6500_Flag = CP_YY6500_NONE;}
}#endif#ifndef _CP_YY6500_H
#define _CP_YY6500_H#ifdef __cplusplus
extern "C"
{
#endif
#include "kw_baseDrvCFG.h"
#ifdef CONFIG_KW_CPtypedef enum _cp_YY6500_e{CP_YY6500_NONE,CP_YY6500_RESULT,CP_YY6500_VERSION,CP_YY6500_NO,CP_YY6500_MAX,} cp_YY6500_e;typedef struct _cp_YY6500_s{unsigned short nongdu;unsigned short liuliang;short wendu;unsigned short res;unsigned char version[8];unsigned char NO[10];} cp_YY6500_s;void CP_YY6500Init();void CP_YY6500SendResult(cp_YY6500_e type, int (*send)(unsigned char *datas, unsigned int len));void CP_YY6500Decode();void CP_YY6500Receive(unsigned char in);#endif#ifdef __cplusplus
}
#endif#endif主函数调用
#include "CP_YY6500.h"static void _hal_uartRecv(unsigned char data)
{CP_YY6500Receive(data);
}void main()
{HAL_UARTInit();CP_YY6500Init();while (1){CP_YY6500Decode();}
}