HexToBin

//************************************
// 函数:      HexToBin
// 参数:      const char * src
// 参数:      unsigned char * bin
// 参数:      int & len
// 返回:      void
// 作用:      16进制 to 2进制
//************************************
void HexToBin(const char* src, unsigned char* bin, int &len)
{
    //printf("key = %s\n",src);
    char *temp = (char*)src;
    char buf[100] = {0};
    char *pBuf = buf;
    int  index = 0;
    do
    {
        pBuf = buf ;   
        while(*temp!=',' && *temp != 0 && *temp != ' ') 
            *pBuf++ = *temp++;
        *pBuf = 0;
        // = atoi(buf);
    sscanf(buf,"%x",&bin[index++]);
    }
    while(*temp++);
    len = index;
}