W5100S datasheet(69/110 Pages) WIZNET

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W5100S Datasheet Version1.2.5

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goto 4.3.1 TCP Server : Receiving Process with get_size = 8;

/* extract Destination IP, Port, Size in PACKET INFO*/

dest_ip[0:3] = destination_address[0:3];

dest_port = (destination_address[4] << 8) + destination_address[5];

data_size = (destination_address[6] << 8) + destination_address[7];

/* read UDP Data */

goto 4.3.1 TCP Server : Receiving Process with get_size = data_size;

}

 Send DATA? / Sending Process

Refer to 4.3.1 TCP Server : Send DATA? / Sending Process.

{

/* set Destination IP Address, 192.168.0.11 */

Sn_DIPR[0:3] = {0xC0, 0xA8, 0x00, 0x0B};

/* set Destination PORT Number, 5000(0x1388) */

Sn_PORTR[0:1] = {0x13, 0x88};

/* for using SEND_MAC Command : */

// refer to 4.4.4.1 UDP MAC Send

/* set Destination MAC Address, 11:22:33:AA:BB:CC

Sn_DHAR[0:5] = {0x11, 0x22, 0x33, 0xAA, 0xBB, 0xCC};

goto 4.3.1 TCP Server : Sending Process;

/* for using SEND_MAC Command : */

// refer to 4.4.4.1 UDP MAC Send

goto 4.3.1 TCP Server : Sending Process replaced Sn_CR[SEND] with

Sn_CR[SEND_MAC];

}

 Timeout?

If Data packet is transmitted to Peer at the first time or the Peer to be received Data Packet is

different from the last Peer, the ARP process is performed before transmitting Data packet.

W5100S Datasheet(PDF) 69 Page - WIZnet Co., Ltd