Result

A word variable that is assigned with the result.

Socket

The socket number you want to get information of

Mode

A parameter that specified what kind of information you want to retrieve.

SEL_CONTROL or 0 : returns the status register value

SEL_SEND or 1 : returns the number of bytes that might be placed into the transmission buffer.

SEL_RECV or 2 : returns the number of bytes that are stored in the reception buffer.

Value

State

Description

0

SOCK_CLOSED

Connection closed

1

SOCK_ARP

Standing by for reply after transmitting ARP request

2

SOCK_LISTEN

Standing by for connection setup to the client when acting in passive mode

3

SOCK_SYNSENT

Standing by for SYN,ACK after transmitting SYN for connecting setup when acting in active mode

4

SOCK_SYNSENT_ACK

Connection setup is complete after SYN,ACK is received and ACK is transmitted in active mode

5

SOCK_SYNRECV

SYN,ACK is being transmitted after receiving SYN from the client in listen state, passive mode

6

SOCK_ESTABLISHED

Connection setup is complete in active, passive mode

7

SOCK_CLOSE_WAIT

Connection being terminated

8

SOCK_LAST_ACK

Connection being terminated

9

SOCK_FIN_WAIT1

Connection being terminated

10

SOCK_FIN_WAIT2

Connection being terminated

11

SOCK_CLOSING

Connection being terminated

12

SOCK_TIME_WAIT

Connection being terminated

13

SOCK_RESET

Connection being terminated after receiving reset packet from peer.

14

SOCK_INIT

Socket initializing

15

SOCK_UDP

Applicable channel is initialized in UDP mode.

16

SOCK_RAW

Applicable channel is initialized in IP layer RAW mode

17

SOCK_UDP_ARP

Standing by for reply after transmitting ARP request packet to the destination for UDP transmission

18

SOCK_UDP_DATA

Data transmission in progress in UDP RAW mode

19

SOCK_RAW_INIT

W3100A initialized in MAC layer RAW mode