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W5100 Datasheet(PDF) 47 Page - WIZnet Co., Ltd

Part # W5100
Description  Single-chip Internet-enabled 10/100 Ethernet Controller
PDF  72 Pages
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Manufacturer  WIZNET [WIZnet Co., Ltd]
Direct Link  https://www.wiznet.io/ko/Product/
Logo WIZNET - WIZnet Co., Ltd

W5100 Datasheet(HTML) 47 Page - WIZnet Co., Ltd

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© Copyright 2009-2011 WIZnet Co., Inc. All rights reserved.
46
memcpy(source_addr, gSn_TX_BASE, left_size);
}
else
{
/* copy send_size bytes of source_addr to get_start_address */
memcpy(source_addr, get_start_address, send_size);
}
/* increase Sn_TX_WR as length of send_size */
Sn_TX_WR += send_size;
/* set SEND command */
Sn_CR = SEND;
}
◼
ESTABLISHED : Received FIN?
Waiting for a connection termination request from remote peer.
It can be checked as below if it received connection termination request of remote peer.
First method :
{
If (Sn_IR(DISCON bit) == ‘1’) goto CLOSED stage;
/* In this case, if the interrupt of Socket n is activated, interrupt occurs. Refer to
Interrupt Register(IR), Interrupt Mask Register (IMR) and Socket n Interrupt Register
(Sn_IR). */
}
Second method :
{
If (Sn_SR == SOCK_CLOSE_WAIT) goto CLOSED stage;
}
◼
ESTABLISHED : Disconnect ? / Disconnecting Process
Check if user requests to terminate this connection.
To terminate the connection, proceed as below,
{
/* set DISCON command */
Sn_CR = DISCON;
}



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