EVB-B1+ WIZnet, EVB-B1+ Datasheet - Page 54

• Manufacturer Part Number: EVB-B1+
• Description: Development Boards & Kits - ARM W3150A+EVAL BOARD BASED ON AVR
• Manufacturer: WIZnet

Specifications of EVB-B1+

• Rohs: yes
• Product: Evaluation Boards
• Interface Type: RS-232, SPI
• Operating Supply Voltage: 3.3 V, 5 V
• Data Bus Width: 8 bit
• Dimensions: 50 mm x 40 mm
• Processor Series: ATmega128

Data field size of PINGMSG is of ‘PINGBUF_LEN’ Byte. PINGBUF_LEN is defined as ‘32’. However, data
field max size may be ‘1472’. This is because the sending MTU of W3150A
Code, CheckSum, ID, and SeqNum Field Size is 8 Bytes. If we subtract 8 from 1480 we get 1472. Hence,
the size is 1472 bytes.
The results from ping() are saved in Data Type defined in <Table 3-22>.
The saved Ping log can be output with RS232 terminal through DisplayPingStatistics() function. <Fig 3.12>
shows the process procedures of DisplayPingStatistics().
CheckSumErr field is incremented by 1 whenever the checksum of Ping Reply from peer is not correctly
received.
Unreachable MSG field and TimeExceedMSG field are incremented by 1 in case of receiving Unreachable
Message or Time Exceeded Message from peer or gateway.
UnknownMSG field is incremented by 1 when the unknown message is received.
typedef struct _PINGMSG
{
}PINGMSG;
char
char
u_short CheckSum;
u_short
u_short SeqNum;
char
© Copyright 2006 WIZnet Co., Inc. All rights reserved.
<Table 3-20: PINGMSG Data Type Definition>
<Table 3-21: PINGLOG Data Type Definition>
typedef struct __PINGLOG
{
}PINGLOG;
Type;
Code;
ID;
Data[PINGBUF_LEN];
u_short CheckSumErr;
u_short UnreachableMSG;
u_short TimeExceedMSG;
u_short UnknownMSG;
u_short ARPErr;
u_short PingRequest;
u_short PingReply
u_short Loss;
// 0 - Ping Reply, 8 - Ping Request
// Always 0
// Check sum
// Identification
// Sequence Number
// Ping Data
;
+
is 1480 bytes, and the sum of
44