- buf = pack_hex_byte(buf, ch[0]);
- buf = pack_hex_byte(buf, ch[1]);
- buf = pack_hex_byte(buf, ch[2]);
- buf = pack_hex_byte(buf, ch[3]);
+ buf = hex_byte_pack(buf, ch[0]);
+ buf = hex_byte_pack(buf, ch[1]);
+ buf = hex_byte_pack(buf, ch[2]);
+ buf = hex_byte_pack(buf, ch[3]);