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W5100S Datasheet(PDF) 68 Page - WIZnet Co., Ltd |
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W5100S Datasheet(HTML) 68 Page - WIZnet Co., Ltd |
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68 / 110 page  68 / 110 W5100S Datasheet Version1.2.5 START : /* set UDP Mode */ Sn_MR[3:0] = ‘0010’; /* set Source PORT Number, 5000(0x1388) */ Sn_PORTR[0:1] = {0x13, 0x88}; /* set SOCKET Option such as Broadcast Block. */ // refer to 3.2.23 Sn_MR2 (SOCKET n Mode register 2) // Sn_MR2[BRDB] = ‘1’; /* set OPEN Command */ Sn_CR = OPEN; while(Sn_CR != 0x00); /* wait until OPEN Command is cleared*/ /* check SOCKET for UDP Mode */ if(Sn_SR != SOCK_UDP) goto START; } Received DATA? Refer to 4.3.1 TCP Server : Received DATA? Receiving Process UDP Mode SOCKET can receive Data Packets from more than one Peer. The received Data Packet is stored in SOCKET n RX Buffer Block with “PACKET INFO” as shown in Figure 9. If the received Data is bigger than SOCKET n RX Buffer Free Size, it is discarded. (Ref 4.3.1 TCP Server : Receiving Process) Figure 9 Received UDP DATA in SOCKETn RX Buffer Block { /* receive PACKINFO */ |
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