https://blog.csdn.net/walk_ing/article/details/52712641 参考链接
1, 具有 A,B,C 三种不同的编码类型, 可提供标准 ASCII 中 128 个字元 (字元, 我理解的就是字符) 的编码使用
2, 每一个字符占 11 个单位表示, 代码中用两个 byte 表示(取后 11 位 bit)
3,Code128 字符表中有些控制字符, 比如 CodeA 表示此字段下一个个块临时使用 Code128A 的字符表中的字符.
- //code128 编码值数组,, 每一个字符占 11 个单位表示, 代码中用两个 byte 表示(取后 11 位 bit)
- static uint16_t s_code128_encode_set[] ={
- 0x6cc,0x66c,0x666,0x498,0x48c,0x44c,0x4c8,0x4c4,0x464,0x648,
- 0x644,0x624,0x59c,0x4dc,0x4ce,0x5cc,0x4ec,0x4e6,0x672,0x65c,
- 0x64e,0x6e4,0x674,0x76e,0x74c,0x72c,0x726,0x764,0x734,0x732,
- 0x6d8,0x6c6,0x636,0x518,0x458,0x446,0x588,0x468,0x462,0x688,
- 0x628,0x622,0x5b8,0x58e,0x46e,0x5d8,0x5c6,0x476,0x776,0x68e,
- 0x62e,0x6e8,0x6e2,0x6ee,0x758,0x746,0x716,0x768,0x762,0x71a,
- 0x77a,0x642,0x78a,0x530,0x50c,0x4b0,0x486,0x42c,0x426,0x590,
- 0x584,0x4d0,0x4c2,0x434,0x432,0x612,0x650,0x7ba,0x614,0x47a,
- 0x53c,0x4bc,0x49e,0x5e4,0x4f4,0x4f2,0x7a4,0x794,0x792,0x6de,
- 0x6f6,0x7b6,0x578,0x51e,0x45e,0x5e8,0x5e2,0x7a8,0x7a2,0x5de,
- 0x5ee,0x75e,0x7ae,0x684,0x690,0x69c,0x18EB
- };
- #define CODE128_MEX_LEN 30
- static uint16_t code128_temp[CODE128_MEX_LEN] = {0};
- #define CODE128_ONE_ELEMENT_SIZE 11
- STATUS_TYPE code128C_encode(const uint8_t *src,uint8_t length,uint8_t *out)
- {
- int i = 0;
- int j = 0;
- uint8_t chr_temp = 0;
- uint32_t check_digit = 0;
- uint16_t *p_out = code128_temp;
- memset(code128_temp,0,CODE128_MEX_LEN);
- p_out[0] = 0x69c;
- p_out++;
- check_digit += 105;
- for(i = 0,j = 0;i <length;i += 2,j++ )
- {
- if(src[i] < '0' || src[i]> '9' || src[i+1] <'0' || src[i+1]> '9')
- {
- return STATUS_INVALID_CHAR;
- }
- chr_temp = (src[i] - '0')*10 + src[i + 1] - '0';
- check_digit += (j + 1)*chr_temp;
- p_out[j] = s_code128_encode_set[chr_temp];
- }
- check_digit %=103;
- p_out[j] = s_code128_encode_set[check_digit];
- p_out[j+1] = 0x18EB;
- return STATUS_OK;
- }
上面的代码实现, 对照 Code128 编码表 去看, 很容易看懂了.
附录: 网上的编码值都是表示成: bbsbbssbbss, 需要转换成对应的数值: 0x6cc, 通过计算器去转太麻烦了, 而且还容易出错, 所以, 写了个 MFC dialog 程序去做(很简单).
可以去 "文件" 页下载()
来源: http://www.bubuko.com/infodetail-3008222.html