Commit e580592

aallancmaglie

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Added Multicast UDP support

1 parent 59b5311 commit e580592Copy full SHA for e580592

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Lines changed: 34 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -216,3 +216,37 @@ void EthernetUDP::flush()`
`216`	`216`	`}`
`217`	`217`	`}`
`218`	`218`
	`219`	`+/* Start EthernetUDP socket, listening at local port PORT */`
	`220`	`+uint8_t EthernetUDP::beginMulticast(IPAddress ip, uint16_t port)`
	`221`	`+{`
	`222`	`+ if (_sock != MAX_SOCK_NUM)`
	`223`	`+ return 0;`
	`224`	`+`
	`225`	`+ for (int i = 0; i < MAX_SOCK_NUM; i++) {`
	`226`	`+ uint8_t s = W5100.readSnSR(i);`
	`227`	`+ if (s == SnSR::CLOSED \|\| s == SnSR::FIN_WAIT) {`
	`228`	`+ _sock = i;`
	`229`	`+ break;`
	`230`	`+ }`
	`231`	`+ }`
	`232`	`+`
	`233`	`+ if (_sock == MAX_SOCK_NUM)`
	`234`	`+ return 0;`
	`235`	`+`
	`236`	`+ // Calculate MAC address from Multicast IP Address`
	`237`	`+ byte mac[] = { 0x01, 0x00, 0x5E, 0x00, 0x00, 0x00 };`
	`238`	`+`
	`239`	`+ mac[3] = ip[1] & 0x7F;`
	`240`	`+ mac[4] = ip[2];`
	`241`	`+ mac[5] = ip[3];`
	`242`	`+`
	`243`	`+ W5100.writeSnDIPR(_sock, rawIPAddress(ip)); //239.255.0.1`
	`244`	`+ W5100.writeSnDPORT(_sock, port);`
	`245`	`+ W5100.writeSnDHAR(_sock,mac);`
	`246`	`+`
	`247`	`+ _remaining = 0;`
	`248`	`+ socket(_sock, SnMR::UDP, port, SnMR::MULTI);`
	`249`	`+ return 1;`
	`250`	`+}`
	`251`	`+`
	`252`	`+`

Lines changed: 1 addition & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -53,6 +53,7 @@ class EthernetUDP : public UDP {`
`53`	`53`	`public:`
`54`	`54`	`EthernetUDP(); // Constructor`
`55`	`55`	`virtual uint8_t begin(uint16_t); // initialize, start listening on specified port. Returns 1 if successful, 0 if there are no sockets available to use`
	`56`	`+ virtual uint8_t beginMulticast(IPAddress, uint16_t); // initialize, start listening on specified port. Returns 1 if successful, 0 if there are no sockets available to use`
`56`	`57`	`virtual void stop(); // Finish with the UDP socket`
`57`	`58`
`58`	`59`	`// Sending UDP packets`

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