TT12-MCU/applications/ttmsg/ttmsg.c

#include <dfs_file.h>

#define LOG_TAG "ttmsg"
#define LOG_LVL  LOG_LVL_DBG
#include <ulog.h>

#include "ttmsg.h"
#define STR_LEN_MAX 30
//模板
MSG msgs_tpl={
        .fstart = {0x88,0xAA,0xBB,0x88},
        .fnum = {0x00,0x01},
        .fbak = {0x00,0x02},
        .ftype = {0x70,0x21},
        .fdlen = {0x00,0x00},

        .ftccid = {0x37,0x32,0x32,0x32},

//        .findex = {0x00,0x01,0x02,0x03,0x04,0x05},
//        .fcfg = {DATA_MODE | CRY_AES},
};

/**
 * @brief 按指定分隔符分割字符串
 *
 * @param str 待分割字符串
 * @param deli 分隔符
 * @param out 输出字符串数组
 * @return size_t 分割后字符串个数
 */
size_t split(const char *str, const char *deli, char (*out)[STR_LEN_MAX])
{
  char buf[50];
  strcpy(buf, str); // strtok会修改字符串
  char *token = strtok(buf, deli);
  char *rst[STR_LEN_MAX];

  size_t i = 0;
  while (token)
  {
    rst[i++] = token;
    token = strtok(NULL, deli);
  }

  // 更新out
  for (size_t ii = 0; ii < i; ii++)
  {
    // out[ii] = id[ii];
    strcpy(out[ii], rst[ii]);
  }

  return i;
}


/**
 * @brief 从文件名字符串提取ID
 *
 * @param fin 文件名，支持路径
 * @param out 提取结果
 * @return size_t ID长度
 */
size_t getID(const char *str, char *out)
{
  char id[10][STR_LEN_MAX] = {};
  // 分割路径
  size_t len = split(str, "/", id);

  // 分割后缀
  len = split(id[len - 1], ".", id);

  // 分割时间
  len = split(id[0], "_", id);

  unsigned char tmp[len];
  for (size_t i = 0; i < len; i++)
  {
    unsigned int v = atoi(id[i]);

    // 去除代表20的2000
    if (v > 0xff)
    {
      v = v - 2000;
    }

    tmp[i] = v;
  }

  memcpy(out, tmp, len);
  return len;
}

/**
 * @description 初始化打包配置文件
 * @param id    时间戳，作为数据包唯一ID
 * @param flag  参数配置，如信息类型、压缩方式、加密方式等
 */
packInit(MSG tpl, const char *fin, rt_uint8_t flag)
{
    //模板
    MSG msgs_tpl={
            .fstart = {0x88,0xAA,0xBB,0x88},
            .fnum = {0x00,0x01},
            .fbak = {0x00,0x02},
            .ftype = {0x70,0x21},
            .fdlen = {0x00,0x00},

            .ftccid = {0x37,0x32,0x32,0x32},

    //        .findex = {0x00,0x01,0x02,0x03,0x04,0x05},
            .fcfg = flag,
    };

//    char *fin="log/2023_05_05/2023_05_05_10_59_23_123";
//    unsigned char id[7];
    size_t len = getID(fin, msgs_tpl.findex);
    if (len != 7) {
        LOG_I("file name %s format error",fin);
    }

}


/**
 * @description: 按MSG帧格式拼接din数据后输出到dout
 * @param {rt_uint8_t} *din 待打包数据
 * @param {rt_uint8_t} len 待打包数据长度
 * @param {rt_uint8_t} *id 时间戳，作为数据包唯一ID
 * @param {rt_uint8_t} flag 参数配置，如信息类型、压缩方式、加密方式等
 * @param {rt_uint8_t} *dout 输出buff
 * @return {*} 打包后数据总长度
 */
rt_uint8_t packMsg(rt_uint8_t *din, rt_uint8_t len, rt_uint8_t *id, rt_uint8_t flag, rt_uint8_t *dout)
{
    MSG *p_msg = NULL;
    rt_uint8_t fralen=sizeof(MSG)+len;//len of current frame
    // printf("len is %d\n",fralen);

    // 为帧数据申请内存
    p_msg = (MSG*)malloc(fralen);//分配空间
    if (p_msg == NULL)
    {
        printf("malloc error, no enough memory.");   /* code */
        return 0;
    }
    // 复制模板内容
    memcpy(p_msg,&msgs_tpl,sizeof(MSG));
    p_msg->fcfg[0] = flag;

    // 计算各字段
    p_msg->fdlen[0]=0;//单包长度必不会超过0xFF，故高字节始终为0
    p_msg->fdlen[1]= fralen - 13;//总长度-帧头长度
    memcpy(p_msg->findex,id,6);

    // 将待发数据传入帧数据
    memcpy(p_msg->fdata,din,len);

    // 将帧数据传入buff
    memcpy(dout,p_msg,fralen);

    // ! 释放内存
    free(p_msg);
    p_msg=NULL;

    return fralen;
}


size_t pack_File(const char *fin, char (*dout)[200])
{
    int fd_in = -1, fd_out = -1;
    int ret = 0;

    size_t file_size = 0;
    rt_uint8_t *buffer = RT_NULL;
    size_t flen = 150;    //每包数据初始长度，最大不超过 FRAME_DATA_LEN_MAX

    fd_in = open(fin, O_RDONLY, 0);
    if (fd_in < 0)
    {
        rt_kprintf("[fastlz] open the input file : %s error!\n", fin);
        ret = -1;
        goto _exit;
    }

//    fd_out = open(fout, O_WRONLY | O_CREAT | O_TRUNC, 0);
//    if (fd_out < 0)
//    {
//        rt_kprintf("[fastlz] open the output file : %s error!\n", fout);
//        ret = -1;
//        goto _exit;
//    }

    file_size = lseek(fd_in, 0, SEEK_END);
    lseek(fd_in, 0, SEEK_SET);

    //粗略调整每包大小
    while (file_size % flen < flen / 1.2 && flen < FRAME_DATA_LEN_MAX)    //阈值约83%
    {
        flen += 1;
    }
    if (file_size % flen < flen / 1.2)
    {    //到达限制仍不符合要求
        flen = 150;
        while (file_size % flen < flen / 2.5 && flen < FRAME_DATA_LEN_MAX)    //调整阈值为40%
        {
            flen += 1;
        }
    }
    buffer = (rt_uint8_t *) malloc(file_size);

    for (int var = 0; var < file_size; ++flen)
    {

    }

    _exit:
        if(fd_in >= 0)
        {
            close(fd_in);
        }

//        if(fd_out >= 0)
//        {
//            close(fd_out);
//        }
//        if (cmprs_buffer)
//        {
//            free(cmprs_buffer);
//        }
//
//        if (buffer)
//        {
//            free(buffer);
//        }

//        return ret;

}

void demomsg() {

    printf("Hello, World!\n");
    printf("MSG size is %d \n",sizeof(MSG));
    printf("msgs size is %d \n",sizeof(msgs_tpl));
    printf("uint8_t size is %d \n",sizeof(rt_uint8_t));
    rt_uint8_t d[]={0xAA,0xBB,0x88,0xFF,0xFF,0x00,0x00,0x70,0x21,0x00,0x8F,0xD3,0x31,0x33};
    rt_uint8_t p_d[200];
    rt_uint8_t index[]={0x63,0x30,0x20,0x33,0x33,0x20};
    rt_uint8_t len=0;
    len = packMsg(&msgs_tpl, d,sizeof(d),index,p_d);
    printf("len is %d\n",len);
    for (size_t i = 0; i < len; i++)
    {
        /* code */
        printf("%d -- 0x%02X \n",i,p_d[i]);
    }
    p_d[len]='\0';
}