Andrew Boyson / net

A stack which works with or without an Mbed os library. Provides IPv4 or IPv6 with a full 1500 byte buffer.

Dependents:   oldheating gps motorhome heating

phy.cpp@13:9cd54f7db57a, 2017-05-01 (annotated)

Committer:
andrewboyson
Date:
Mon May 01 18:20:55 2017 +0000
Revision:
13:9cd54f7db57a
Parent:
10:f0854784e960
Child:
14:e75a59c1123d
Added ability to read DNS queries with encoded IP addresses

Who changed what in which revision?

UserRevisionLine numberNew contents of line
andrewboyson 0:faa09bd4e6bf 1 #include "mbed.h"
andrewboyson 0:faa09bd4e6bf 2 #include "io.h"
andrewboyson 4:31fa7d50722c 3 #include "log.h"
andrewboyson 0:faa09bd4e6bf 4 #include "eth.h"
andrewboyson 13:9cd54f7db57a 5 #include "mac.h"
andrewboyson 2:849103b5a16d 6 #include "net.h"
andrewboyson 7:b794780e33b4 7 #include "phy.h"
andrewboyson 0:faa09bd4e6bf 8
andrewboyson 0:faa09bd4e6bf 9 Ethernet eth;
andrewboyson 0:faa09bd4e6bf 10
andrewboyson 2:849103b5a16d 11 DigitalIn phyLinkNeg (P1_25);
andrewboyson 2:849103b5a16d 12 DigitalIn phySpeedNeg(P1_26);
andrewboyson 0:faa09bd4e6bf 13
andrewboyson 0:faa09bd4e6bf 14
andrewboyson 13:9cd54f7db57a 15 static char buf[1600];
andrewboyson 0:faa09bd4e6bf 16
andrewboyson 0:faa09bd4e6bf 17 static Timer blinkTimer;
andrewboyson 0:faa09bd4e6bf 18
andrewboyson 0:faa09bd4e6bf 19 static void blink()
andrewboyson 0:faa09bd4e6bf 20 {
andrewboyson 0:faa09bd4e6bf 21 blinkTimer.reset();
andrewboyson 0:faa09bd4e6bf 22 blinkTimer.start();
andrewboyson 0:faa09bd4e6bf 23 }
andrewboyson 0:faa09bd4e6bf 24
andrewboyson 0:faa09bd4e6bf 25 static void updateLeds()
andrewboyson 0:faa09bd4e6bf 26 {
andrewboyson 0:faa09bd4e6bf 27 if (blinkTimer.read_ms() < 100)
andrewboyson 0:faa09bd4e6bf 28 {
andrewboyson 0:faa09bd4e6bf 29 IoEthLedGrL = 0;
andrewboyson 0:faa09bd4e6bf 30 IoEthLedYeR = 0;
andrewboyson 0:faa09bd4e6bf 31 }
andrewboyson 0:faa09bd4e6bf 32 else
andrewboyson 0:faa09bd4e6bf 33 {
andrewboyson 2:849103b5a16d 34 IoEthLedGrL = !phyLinkNeg ;
andrewboyson 2:849103b5a16d 35 IoEthLedYeR = !phySpeedNeg;
andrewboyson 0:faa09bd4e6bf 36 blinkTimer.stop();
andrewboyson 0:faa09bd4e6bf 37 }
andrewboyson 0:faa09bd4e6bf 38 }
andrewboyson 0:faa09bd4e6bf 39 static int readPacket()
andrewboyson 0:faa09bd4e6bf 40 {
andrewboyson 0:faa09bd4e6bf 41 int sizeReceived = eth.receive();
andrewboyson 2:849103b5a16d 42 if (sizeReceived)
andrewboyson 2:849103b5a16d 43 {
andrewboyson 2:849103b5a16d 44 eth.read(buf, sizeReceived);
andrewboyson 2:849103b5a16d 45 blink();
andrewboyson 2:849103b5a16d 46 }
andrewboyson 0:faa09bd4e6bf 47 return sizeReceived;
andrewboyson 0:faa09bd4e6bf 48 }
andrewboyson 0:faa09bd4e6bf 49
andrewboyson 0:faa09bd4e6bf 50 static void sendPacket(int sendLength)
andrewboyson 0:faa09bd4e6bf 51 {
andrewboyson 0:faa09bd4e6bf 52 eth.write(buf, sendLength); //Make a packet from the header (14 bytes) and the payload
andrewboyson 2:849103b5a16d 53 int sent = eth.send(); //Send the packet
andrewboyson 2:849103b5a16d 54 if (sent) blink();
andrewboyson 4:31fa7d50722c 55 else LogTimeF("Packet of %d bytes not sent\r\n", sendLength);
andrewboyson 0:faa09bd4e6bf 56 }
andrewboyson 0:faa09bd4e6bf 57
andrewboyson 2:849103b5a16d 58 static bool linkIsUp = false;
andrewboyson 2:849103b5a16d 59 static void checkLinkIsUp()
andrewboyson 2:849103b5a16d 60 {
andrewboyson 2:849103b5a16d 61 static Timer linkUpTimer;
andrewboyson 2:849103b5a16d 62 if (phyLinkNeg) //link is indicated as being down
andrewboyson 2:849103b5a16d 63 {
andrewboyson 2:849103b5a16d 64 linkIsUp = false;
andrewboyson 2:849103b5a16d 65 linkUpTimer.reset();
andrewboyson 2:849103b5a16d 66 linkUpTimer.start();
andrewboyson 2:849103b5a16d 67 }
andrewboyson 2:849103b5a16d 68 else //link is indicated as being up
andrewboyson 2:849103b5a16d 69 {
andrewboyson 2:849103b5a16d 70 if (linkUpTimer.read_ms() > 100)
andrewboyson 2:849103b5a16d 71 {
andrewboyson 2:849103b5a16d 72 linkIsUp = true;
andrewboyson 2:849103b5a16d 73 linkUpTimer.stop();
andrewboyson 2:849103b5a16d 74 }
andrewboyson 2:849103b5a16d 75 else
andrewboyson 2:849103b5a16d 76 {
andrewboyson 2:849103b5a16d 77 linkUpTimer.start();
andrewboyson 2:849103b5a16d 78 }
andrewboyson 2:849103b5a16d 79 }
andrewboyson 2:849103b5a16d 80 }
andrewboyson 2:849103b5a16d 81
andrewboyson 2:849103b5a16d 82 void PhyMain()
andrewboyson 0:faa09bd4e6bf 83 {
andrewboyson 0:faa09bd4e6bf 84 updateLeds();
andrewboyson 0:faa09bd4e6bf 85
andrewboyson 2:849103b5a16d 86 checkLinkIsUp();
andrewboyson 2:849103b5a16d 87
andrewboyson 7:b794780e33b4 88 int size = readPacket();
andrewboyson 13:9cd54f7db57a 89
andrewboyson 9:91dae5300a4d 90 int action = DO_NOTHING;
andrewboyson 0:faa09bd4e6bf 91
andrewboyson 0:faa09bd4e6bf 92 //If a packet has been received then handle it
andrewboyson 7:b794780e33b4 93 if (size) action = EthHandlePacket(&buf, &size);
andrewboyson 0:faa09bd4e6bf 94
andrewboyson 0:faa09bd4e6bf 95 //If there is no packet to handle then see if there is a packet waiting to be sent
andrewboyson 9:91dae5300a4d 96 if (action == DO_NOTHING && linkIsUp)
andrewboyson 2:849103b5a16d 97 {
andrewboyson 10:f0854784e960 98 action = EthPollForPacketToSend(&buf, &size);
andrewboyson 2:849103b5a16d 99 }
andrewboyson 0:faa09bd4e6bf 100
andrewboyson 0:faa09bd4e6bf 101 //If there is a packet to send then send it
andrewboyson 13:9cd54f7db57a 102 if (action != DO_NOTHING)
andrewboyson 13:9cd54f7db57a 103 {
andrewboyson 13:9cd54f7db57a 104 sendPacket(size);
andrewboyson 13:9cd54f7db57a 105 }
andrewboyson 0:faa09bd4e6bf 106 }
andrewboyson 0:faa09bd4e6bf 107
andrewboyson 2:849103b5a16d 108 void PhyInit()
andrewboyson 0:faa09bd4e6bf 109 {
andrewboyson 2:849103b5a16d 110 phyLinkNeg.mode(PullUp);
andrewboyson 2:849103b5a16d 111 phySpeedNeg.mode(PullUp);
andrewboyson 0:faa09bd4e6bf 112 blink();
andrewboyson 13:9cd54f7db57a 113 eth.address(MacLocal);
andrewboyson 0:faa09bd4e6bf 114 char text[20];
andrewboyson 13:9cd54f7db57a 115 NetMacToString(MacLocal, sizeof(text), text);
andrewboyson 4:31fa7d50722c 116 LogF("\r\n");
andrewboyson 4:31fa7d50722c 117 LogTimeF("MAC: %s\r\n", text);
andrewboyson 0:faa09bd4e6bf 118 }