Bruno St-Georges / Mbed 2 deprecated TP3_TCPServer

tcp_socket lab

Dependencies:   mbed mbed-rtos EthernetInterface

main.cpp@9:87c9a4f4c0b2, 2019-12-10 (annotated)

Committer:
brunostgr
Date:
Tue Dec 10 16:20:32 2019 +0000
Revision:
9:87c9a4f4c0b2
Parent:
8:23b1fba109b0 
tcp_socket

Who changed what in which revision?

UserRevisionLine numberNew contents of line
brunostgr 9:87c9a4f4c0b2 1 /*
brunostgr 9:87c9a4f4c0b2 2 * Le 12 novembre 2019
brunostgr 9:87c9a4f4c0b2 3 * Microcontroleurs et reseaux
brunostgr 9:87c9a4f4c0b2 4 *
brunostgr 9:87c9a4f4c0b2 5 * Bruno St-Georges & Benjamin Lapointe
brunostgr 9:87c9a4f4c0b2 6 * LPC1768
brunostgr 9:87c9a4f4c0b2 7 *
brunostgr 9:87c9a4f4c0b2 8 * TP3 - TCPServer
brunostgr 9:87c9a4f4c0b2 9 * Ce programme sert a heberger un serveur TCP sur une carte mbed LPC1768 qui relie le TCPsocket client (script python)
brunostgr 9:87c9a4f4c0b2 10 * aux deux PICs(noeuds lumiere et temperature) connectes sur le bus CAN. Un connecteur Mag-Jack est connecte sur les ports TD+/- et RD+/-
brunostgr 9:87c9a4f4c0b2 11 * du LPC1768 pour permettre la communication Ethernet.
brunostgr 9:87c9a4f4c0b2 12 *
brunostgr 9:87c9a4f4c0b2 13 * Connexions externes:
brunostgr 9:87c9a4f4c0b2 14 * CANBus (p9,p10)
brunostgr 9:87c9a4f4c0b2 15 * Mag-Jack (Ethernet pins)
brunostgr 9:87c9a4f4c0b2 16 *
brunostgr 9:87c9a4f4c0b2 17 * Couleurs offertes pour le module de lumiere:
brunostgr 9:87c9a4f4c0b2 18 * C: Cyan
brunostgr 9:87c9a4f4c0b2 19 * L: Lime
brunostgr 9:87c9a4f4c0b2 20 * M: Magenta
brunostgr 9:87c9a4f4c0b2 21 * G: Gold
brunostgr 9:87c9a4f4c0b2 22 * F: Forest
brunostgr 9:87c9a4f4c0b2 23 *
brunostgr 9:87c9a4f4c0b2 24 */
brunostgr 9:87c9a4f4c0b2 25
mbed_official 0:38cbb854d85f 26 #include "mbed.h"
emilmont 1:5cebe0e38cd2 27 #include "EthernetInterface.h"
mbed_official 8:23b1fba109b0 28
brunostgr 9:87c9a4f4c0b2 29 #define ECHO_SERVER_PORT 69
brunostgr 9:87c9a4f4c0b2 30
brunostgr 9:87c9a4f4c0b2 31 // Fonction d'appel periodique
brunostgr 9:87c9a4f4c0b2 32 Ticker ticker;
brunostgr 9:87c9a4f4c0b2 33
brunostgr 9:87c9a4f4c0b2 34 // Bus CAN
brunostgr 9:87c9a4f4c0b2 35 CAN canbus(p9, p10);
brunostgr 9:87c9a4f4c0b2 36
brunostgr 9:87c9a4f4c0b2 37 // Variables
brunostgr 9:87c9a4f4c0b2 38 CANMessage msg,msg2;
brunostgr 9:87c9a4f4c0b2 39 bool flag_temp = 0, flag_lum = 0;
brunostgr 9:87c9a4f4c0b2 40 char etat_temp[2] = {0,0}, etat_lum[2] = {0,0};
brunostgr 9:87c9a4f4c0b2 41 char lect_temp[2] = {0,0}, lect_lum[1] = {0};
brunostgr 9:87c9a4f4c0b2 42
brunostgr 9:87c9a4f4c0b2 43
brunostgr 9:87c9a4f4c0b2 44 // Port Serie
brunostgr 9:87c9a4f4c0b2 45 Serial pc(USBTX, USBRX);
brunostgr 9:87c9a4f4c0b2 46
brunostgr 9:87c9a4f4c0b2 47 // LED active a l'envoi de trames CAN
brunostgr 9:87c9a4f4c0b2 48 DigitalOut LED(LED1);
brunostgr 9:87c9a4f4c0b2 49 DigitalOut DEL(LED2);
brunostgr 9:87c9a4f4c0b2 50
brunostgr 9:87c9a4f4c0b2 51 // Fonction d'envoi - appel aux 100ms
brunostgr 9:87c9a4f4c0b2 52 void send() {
brunostgr 9:87c9a4f4c0b2 53
brunostgr 9:87c9a4f4c0b2 54 if(flag_temp){ // Message CAN de temperature
brunostgr 9:87c9a4f4c0b2 55 LED = not LED;
brunostgr 9:87c9a4f4c0b2 56 flag_temp = 0;
brunostgr 9:87c9a4f4c0b2 57 msg2.id = 0x300;
brunostgr 9:87c9a4f4c0b2 58 msg2.data[0] = etat_temp[0];
brunostgr 9:87c9a4f4c0b2 59 msg2.data[1] = etat_temp[1];
brunostgr 9:87c9a4f4c0b2 60 canbus.write(msg2);
brunostgr 9:87c9a4f4c0b2 61 }
brunostgr 9:87c9a4f4c0b2 62 else if(flag_lum){ // Message CAN de lumiere
brunostgr 9:87c9a4f4c0b2 63 DEL = not DEL;
brunostgr 9:87c9a4f4c0b2 64 flag_lum = 0;
brunostgr 9:87c9a4f4c0b2 65 msg2.id = 0x400;
brunostgr 9:87c9a4f4c0b2 66 msg2.data[0] = etat_lum[0];
brunostgr 9:87c9a4f4c0b2 67 msg2.data[1] = etat_lum[1];
brunostgr 9:87c9a4f4c0b2 68 canbus.write(msg2);
brunostgr 9:87c9a4f4c0b2 69 }
brunostgr 9:87c9a4f4c0b2 70 }
mbed_official 8:23b1fba109b0 71
emilmont 1:5cebe0e38cd2 72 int main (void) {
emilmont 1:5cebe0e38cd2 73 EthernetInterface eth;
brunostgr 9:87c9a4f4c0b2 74 eth.init(); // Use DHCP
emilmont 1:5cebe0e38cd2 75 eth.connect();
mbedAustin 7:a5ead1402704 76 printf("\nServer IP Address is %s\n", eth.getIPAddress());
emilmont 1:5cebe0e38cd2 77
emilmont 1:5cebe0e38cd2 78 TCPSocketServer server;
emilmont 3:36fd3cfad85a 79 server.bind(ECHO_SERVER_PORT);
emilmont 3:36fd3cfad85a 80 server.listen();
emilmont 1:5cebe0e38cd2 81
brunostgr 9:87c9a4f4c0b2 82 canbus.frequency(125000); // Bus CAN a 125kHz
brunostgr 9:87c9a4f4c0b2 83 ticker.attach(&send, 0.1); // Attache du ticker a la fonction periodique d'envoi
brunostgr 9:87c9a4f4c0b2 84
emilmont 1:5cebe0e38cd2 85 while (true) {
emilmont 1:5cebe0e38cd2 86 printf("\nWait for new connection...\n");
emilmont 1:5cebe0e38cd2 87 TCPSocketConnection client;
emilmont 1:5cebe0e38cd2 88 server.accept(client);
emilmont 3:36fd3cfad85a 89 client.set_blocking(false, 1500); // Timeout after (1.5)s
emilmont 1:5cebe0e38cd2 90
emilmont 1:5cebe0e38cd2 91 printf("Connection from: %s\n", client.get_address());
emilmont 1:5cebe0e38cd2 92 char buffer[256];
emilmont 1:5cebe0e38cd2 93 while (true) {
brunostgr 9:87c9a4f4c0b2 94
brunostgr 9:87c9a4f4c0b2 95 //--------------------------------------------
brunostgr 9:87c9a4f4c0b2 96 // Traitement de la trame recue sur le bus CAN
brunostgr 9:87c9a4f4c0b2 97 //--------------------------------------------
brunostgr 9:87c9a4f4c0b2 98 if(canbus.read(msg)){ // Verifie si une trame a ete recue sur le bus CAN
brunostgr 9:87c9a4f4c0b2 99 if(msg.id == 0x301){
brunostgr 9:87c9a4f4c0b2 100 lect_temp[0] = msg.data[0]; // Dizaines
brunostgr 9:87c9a4f4c0b2 101 lect_temp[1] = msg.data[1]; // Unites
brunostgr 9:87c9a4f4c0b2 102 }
brunostgr 9:87c9a4f4c0b2 103 if(msg.id == 0x401){
brunostgr 9:87c9a4f4c0b2 104 lect_lum[0] = msg.data[0];
brunostgr 9:87c9a4f4c0b2 105 }
brunostgr 9:87c9a4f4c0b2 106 }
brunostgr 9:87c9a4f4c0b2 107
brunostgr 9:87c9a4f4c0b2 108 //--------------------------------------------
brunostgr 9:87c9a4f4c0b2 109 // Traitement de la trame recue du TCPclient
brunostgr 9:87c9a4f4c0b2 110 //--------------------------------------------
emilmont 3:36fd3cfad85a 111 int n = client.receive(buffer, sizeof(buffer));
brunostgr 9:87c9a4f4c0b2 112 printf("n value :'%s'\n",n);
emilmont 1:5cebe0e38cd2 113 if (n <= 0) break;
emilmont 1:5cebe0e38cd2 114
mbedAustin 7:a5ead1402704 115 // print received message to terminal
mbedAustin 7:a5ead1402704 116 buffer[n] = '\0';
mbedAustin 7:a5ead1402704 117 printf("Received message from Client :'%s'\n",buffer);
brunostgr 9:87c9a4f4c0b2 118
brunostgr 9:87c9a4f4c0b2 119 //-------------------------------------------
brunostgr 9:87c9a4f4c0b2 120 // Traitement du statut
brunostgr 9:87c9a4f4c0b2 121 //-------------------------------------------
brunostgr 9:87c9a4f4c0b2 122 if(buffer[0] == 'S'){ // Statut
brunostgr 9:87c9a4f4c0b2 123 if(buffer[1] == 'T'){ // Temp
brunostgr 9:87c9a4f4c0b2 124 printf("Temp = %c",&lect_temp);
brunostgr 9:87c9a4f4c0b2 125 client.send((char*)&lect_temp, 2);
brunostgr 9:87c9a4f4c0b2 126
mbedAustin 7:a5ead1402704 127 }
brunostgr 9:87c9a4f4c0b2 128 else if(buffer[1] == 'L'){ // Lum
brunostgr 9:87c9a4f4c0b2 129 printf("Lum = %c", &lect_lum);
brunostgr 9:87c9a4f4c0b2 130 client.send((char*)&lect_lum,1);
brunostgr 9:87c9a4f4c0b2 131
brunostgr 9:87c9a4f4c0b2 132 }
brunostgr 9:87c9a4f4c0b2 133 }
mbedAustin 7:a5ead1402704 134
brunostgr 9:87c9a4f4c0b2 135 //--------------------------------------------
brunostgr 9:87c9a4f4c0b2 136 // Traitement de la commande
brunostgr 9:87c9a4f4c0b2 137 //--------------------------------------------
brunostgr 9:87c9a4f4c0b2 138 if(buffer[0] == 'C'){ // Commande
brunostgr 9:87c9a4f4c0b2 139 if(buffer[1] == 'L'){ // Lumiere
brunostgr 9:87c9a4f4c0b2 140 etat_lum[0] = buffer[2]; // Etat demande
brunostgr 9:87c9a4f4c0b2 141 etat_lum[1] = buffer[3]; // Couleur choisie
brunostgr 9:87c9a4f4c0b2 142 flag_lum = 1;
brunostgr 9:87c9a4f4c0b2 143 }
brunostgr 9:87c9a4f4c0b2 144 if(buffer[1] == 'T'){ // Temperature
brunostgr 9:87c9a4f4c0b2 145 etat_temp[0] = buffer[2]; // Temperature demandee (dizaines)
brunostgr 9:87c9a4f4c0b2 146 etat_temp[1] = buffer[3]; // Temperature demandee (unites)
brunostgr 9:87c9a4f4c0b2 147 flag_temp = 1;
brunostgr 9:87c9a4f4c0b2 148 }
brunostgr 9:87c9a4f4c0b2 149 }
brunostgr 9:87c9a4f4c0b2 150 }
emilmont 1:5cebe0e38cd2 151 client.close();
emilmont 1:5cebe0e38cd2 152 }
emilmont 1:5cebe0e38cd2 153 }
mbed_official 8:23b1fba109b0 154