someframes.txt

本人编写的无线电话程序,给予PIC18C801设计,包括了uCOS的移植以及菜单,自己设计的拼音注入法,完整地一级汉字库,希望对大家有所帮助

//a CCP request frame
7E
FF 03			//Address and control
80 FD			//Protocol
01 0C			//Code and ID
00 1A			//Length
12 06 00 00 00 01	//option
11 05 00 01 04
11 05 00 01 03 
11 06 00 01 01 01 
4E 75			//FCS
7E

//a ICMP (Ping) request frame
7E 
FF 03 
00 21

45	//Ver-HLen : 0x04 for IPV4, 0x05 is the length of head in DWORD
00	//Service = 0
00 3C	//total length 

2B 8F	//Identification, increase by one after a packet send
20 20

6D	//Time To Live
01	//Protocol = ICMP
7C 28	//Checksum

DA 02 A0 7A	//Source add = 218.2.160.122

DC C0 6E CC	//destination add = 220.192.110.204, this is current local IP

//ICMP packet begin
08	//ICMP Type = 8, "Echo Request"u
00	//Code
D8 23	//CheckSum

61 93	//Identifier
13 A5	//Sequence number
61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70
71 72 73 74 75 76 77 61 62 63 64 65 66 67 68 69
//End of ICMP packet

FB CD	//PPP FCS
7E