Revision 21:4b8d80bf664f, committed 2017-05-04

Comitter:

fpucher

Date:

Thu May 04 10:07:14 2017 +0000

Parent:

20:49c9daf2b0ff

Commit message:

MQTT Client for mbed LPC1768 and Application Board over Ethernet.

Changed in this revision

--- a/Linux-example/LinuxIPStack.h	Tue Jan 10 18:10:17 2017 -0600
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,119 +0,0 @@
-#if !defined(LINUX_IPSTACK_H)
-#define LINUX_IPSTACK_H
-
-class IPStack 
-{
-public:    
-    IPStack()
-    {
-
-    }
-    
-    int Socket_error(const char* aString)
-    {
-
-        if (errno != EINTR && errno != EAGAIN && errno != EINPROGRESS && errno != EWOULDBLOCK)
-        {
-            if (strcmp(aString, "shutdown") != 0 || (errno != ENOTCONN && errno != ECONNRESET))
-                printf("Socket error %s in %s for socket %d\n", strerror(errno), aString, mysock);
-        }
-        return errno;
-    }
-
-    int connect(const char* hostname, int port)
-    {
-        int type = SOCK_STREAM;
-        struct sockaddr_in address;
-        int rc = -1;
-        sa_family_t family = AF_INET;
-        struct addrinfo *result = NULL;
-        struct addrinfo hints = {0, AF_UNSPEC, SOCK_STREAM, IPPROTO_TCP, 0, NULL, NULL, NULL};
-
-        if ((rc = getaddrinfo(hostname, NULL, &hints, &result)) == 0)
-        {
-            struct addrinfo* res = result;
-
-            /* prefer ip4 addresses */
-            while (res)
-            {
-                if (res->ai_family == AF_INET)
-                {
-                    result = res;
-                    break;
-                }
-                res = res->ai_next;
-            }
-
-            if (result->ai_family == AF_INET)
-            {
-                address.sin_port = htons(port);
-                address.sin_family = family = AF_INET;
-                address.sin_addr = ((struct sockaddr_in*)(result->ai_addr))->sin_addr;
-            }
-            else
-                rc = -1;
-
-            freeaddrinfo(result);
-        }
-
-        if (rc == 0)
-        {
-            mysock = socket(family, type, 0);
-            if (mysock != -1)
-            {
-                int opt = 1;
-
-                //if (setsockopt(mysock, SOL_SOCKET, SO_NOSIGPIPE, (void*)&opt, sizeof(opt)) != 0)
-                //  printf("Could not set SO_NOSIGPIPE for socket %d", mysock);
-                
-                rc = ::connect(mysock, (struct sockaddr*)&address, sizeof(address));
-            }
-        }
-
-        return rc;
-    }
-
-    int read(char* buffer, int len, int timeout_ms)
-    {
-        struct timeval interval = {timeout_ms / 1000, (timeout_ms % 1000) * 1000};
-        if (interval.tv_sec < 0 || (interval.tv_sec == 0 && interval.tv_usec <= 0))
-        {
-            interval.tv_sec = 0;
-            interval.tv_usec = 100;
-        }
-
-        setsockopt(mysock, SOL_SOCKET, SO_RCVTIMEO, (char *)&interval, sizeof(struct timeval));
-
-        //printf("reading %d bytes\n", len);
-        int rc = ::recv(mysock, buffer, (size_t)len, 0);
-        if (rc == -1)
-            Socket_error("read");
-        //printf("read %d bytes\n", rc);
-        return rc;
-    }
-    
-    int write(char* buffer, int len, int timeout)
-    {
-        struct timeval tv;
-
-        tv.tv_sec = 0;  /* 30 Secs Timeout */
-        tv.tv_usec = timeout * 1000;  // Not init'ing this can cause strange errors
-
-        setsockopt(mysock, SOL_SOCKET, SO_RCVTIMEO, (char *)&tv,sizeof(struct timeval));
-        int rc = ::write(mysock, buffer, len);
-        //printf("write rc %d\n", rc);
-        return rc;
-    }
-
-    int disconnect()
-    {
-        return ::close(mysock);
-    }
-    
-private:
-
-    int mysock; 
-    
-};
-
-#endif
\ No newline at end of file

--- a/Linux-example/LinuxMQTT.h	Tue Jan 10 18:10:17 2017 -0600
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,64 +0,0 @@
-#if !defined(LINUXMQTT_H)
-#define LINUXMQTT_H
-
-class Countdown
-{
-public:
-    Countdown()
-    { 
-    
-    }
-
-    Countdown(int ms)
-    { 
-        countdown_ms(ms);
-    }
-    
-
-    bool expired()
-    {
-        struct timeval now, res;
-        gettimeofday(&now, NULL);
-        timersub(&end_time, &now, &res);        
-        //printf("left %d ms\n", (res.tv_sec < 0) ? 0 : res.tv_sec * 1000 + res.tv_usec / 1000);
-        //if (res.tv_sec > 0 || res.tv_usec > 0)
-        //  printf("expired %d %d\n", res.tv_sec, res.tv_usec);
-        return res.tv_sec < 0 || (res.tv_sec == 0 && res.tv_usec <= 0);
-    }
-    
-
-    void countdown_ms(int ms)  
-    {
-        struct timeval now;
-        gettimeofday(&now, NULL);
-        struct timeval interval = {ms / 1000, (ms % 1000) * 1000};
-        //printf("interval %d %d\n", interval.tv_sec, interval.tv_usec);
-        timeradd(&now, &interval, &end_time);
-    }
-
-    
-    void countdown(int seconds)
-    {
-        struct timeval now;
-        gettimeofday(&now, NULL);
-        struct timeval interval = {seconds, 0};
-        timeradd(&now, &interval, &end_time);
-    }
-
-    
-    int left_ms()
-    {
-        struct timeval now, res;
-        gettimeofday(&now, NULL);
-        timersub(&end_time, &now, &res);
-        //printf("left %d ms\n", (res.tv_sec < 0) ? 0 : res.tv_sec * 1000 + res.tv_usec / 1000);
-        return (res.tv_sec < 0) ? 0 : res.tv_sec * 1000 + res.tv_usec / 1000;
-    }
-    
-private:
-
-    struct timeval end_time;
-};
-
-
-#endif
\ No newline at end of file

--- a/Linux-example/linux-main.cpp	Tue Jan 10 18:10:17 2017 -0600
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,149 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2014 IBM Corp.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * and Eclipse Distribution License v1.0 which accompany this distribution.
- *
- * The Eclipse Public License is available at
- *    http://www.eclipse.org/legal/epl-v10.html
- * and the Eclipse Distribution License is available at
- *   http://www.eclipse.org/org/documents/edl-v10.php.
- *
- * Contributors:
- *    Ian Craggs - initial API and implementation and/or initial documentation
- *******************************************************************************/
-  
- /**
-  This is a sample program to illustrate the use of the MQTT Client library
-  on Linux.  The Client class requires two classes which mediate
-  access to system interfaces for networking and timing.  As long as these two
-  classes provide the required public programming interfaces, it does not matter
-  what facilities they use underneath. In this program, they use the Linux
-  system libraries.
- 
- */
-
-#if defined(LINUX)
-
-#include "LinuxMQTT.h"
-#include "LinuxIPStack.h"
-#include "MQTTClient.h"
-
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/param.h>
-#include <sys/time.h>
-#include <sys/select.h>
-#include <netinet/in.h>
-#include <netinet/tcp.h>
-#include <arpa/inet.h>
-#include <netdb.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <errno.h>
-#include <fcntl.h>
-
-#include <stdlib.h>
-#include <string.h>
-#include <signal.h>
-
-#define DEFAULT_STACK_SIZE -1
-
-
-int arrivedcount = 0;
-
-void messageArrived(MQTT::Message* message)
-{
-	printf("Message %d arrived: qos %d, retained %d, dup %d, packetid %d\n", 
-		++arrivedcount, message->qos, message->retained, message->dup, message->id);
-    printf("Payload %.*s\n", message->payloadlen, (char*)message->payload);
-}
-
-
-int connect(MQTT::Client<IPStack, Countdown>::connectionLostInfo* info)
-{
-    const char* hostname = "localhost"; //"m2m.eclipse.org";
-    int port = 1883;
-    printf("Connecting to %s:%d\n", hostname, port);
-    int rc = info->network->connect(hostname, port);
-	if (rc != 0)
-	    printf("rc from TCP connect is %d\n", rc);
- 
-    MQTTPacket_connectData data = MQTTPacket_connectData_initializer;       
-    data.MQTTVersion = 3;
-    data.clientID.cstring = (char*)"mbed-icraggs";
-    rc = info->client->connect(&data);
-	if (rc != 0)
-	    printf("rc from MQTT connect is %d\n", rc);
-    
-    return rc;
-}
-
-
-int main(int argc, char* argv[])
-{   
-    IPStack ipstack = IPStack();
-    float version = 0.3;
-    const char* topic = "mbed-sample";
-    
-    printf("Version is %f\n", version);
-              
-    MQTT::Client<IPStack, Countdown> client = MQTT::Client<IPStack, Countdown>(ipstack);
-    
-    client.setConnectionLostHandler(connect);
-
-    MQTT::Client<IPStack, Countdown>::connectionLostInfo info = {&client, &ipstack};
-    int rc = connect(&info);
-    
-    rc = client.subscribe(topic, MQTT::QOS2, messageArrived);   
-    if (rc != 0)
-        printf("rc from MQTT subscribe is %d\n", rc);
-
-    MQTT::Message message;
-
-    // QoS 0
-    char buf[100];
-    sprintf(buf, "Hello World!  QoS 0 message from app version %f", version);
-    message.qos = MQTT::QOS0;
-    message.retained = false;
-    message.dup = false;
-    message.payload = (void*)buf;
-    message.payloadlen = strlen(buf)+1;
-    rc = client.publish(topic, &message);
-    while (arrivedcount == 0)
-        client.yield(100);
-        
-    // QoS 1
-	printf("Now QoS 1\n");
-    sprintf(buf, "Hello World!  QoS 1 message from app version %f", version);
-    message.qos = MQTT::QOS1;
-    message.payloadlen = strlen(buf)+1;
-    rc = client.publish(topic, &message);
-    while (arrivedcount == 1)
-        client.yield(100);
-        
-    // QoS 2
-    sprintf(buf, "Hello World!  QoS 2 message from app version %f", version);
-    message.qos = MQTT::QOS2;
-    message.payloadlen = strlen(buf)+1;
-    rc = client.publish(topic, &message);
-    while (arrivedcount == 2)
-        client.yield(100);
-    
-    rc = client.unsubscribe(topic);
-    if (rc != 0)
-        printf("rc from unsubscribe was %d\n", rc);
-    
-    rc = client.disconnect();
-    if (rc != 0)
-        printf("rc from disconnect was %d\n", rc);
-    
-    ipstack.disconnect();
-    
-    printf("Finishing with %d messages received\n", arrivedcount);
-    
-    return 0;
-}
-
-#endif

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MMA7660.lib	Thu May 04 10:07:14 2017 +0000
@@ -0,0 +1,1 @@
+http://developer.mbed.org/users/Sissors/code/MMA7660/#36a163511e34

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MQTTESP8266.h	Thu May 04 10:07:14 2017 +0000
@@ -0,0 +1,44 @@
+
+#if !defined(MQTTESP8266_H)
+#define MQTTESP8266_H
+
+#include "MQTTmbed.h"
+#include "ESP8266Interface.h"
+#include "MQTTSocket.h"
+
+// This struct is only used to workaround the order that the interfaces are initialized
+// MQTTSocket contains a TCPSocketConnection which needs the ESP8266Interface to be 
+// instantiated first. Unfortunately the only way to instantiate a member before a superclass 
+// is through another superclass.
+struct MQTTESP8266Holder {
+    MQTTESP8266Holder(PinName tx, PinName rx, PinName reset, const char *ssid, const char *pass) :
+            _wifi(tx, rx, reset, ssid, pass) {}
+    
+    ESP8266Interface _wifi;
+};
+
+// Straightforward implementation of a MQTT interface
+class MQTTESP8266 : public MQTTESP8266Holder, public MQTTSocket {    
+private:
+    MQTTESP8266Holder::_wifi;
+    //ESP8266Interface _wifi;
+    
+public:    
+    MQTTESP8266(PinName tx, PinName rx, PinName reset, const char *ssid, const char *pass) :
+            MQTTESP8266Holder(tx, rx, reset, ssid, pass) {
+        _wifi.init();
+        _wifi.connect();
+    }
+    
+    ESP8266Interface& getInterface() {
+        return _wifi;
+    }
+    
+    void reconnect() {
+        _wifi.disconnect();
+        _wifi.connect();
+    }
+};
+
+
+#endif

--- a/main.cpp	Tue Jan 10 18:10:17 2017 -0600
+++ b/main.cpp	Thu May 04 10:07:14 2017 +0000
@@ -1,4 +1,5 @@
 /*******************************************************************************
+ * Changed: PE, v0.71 works with Ethernet and random Client-ID
  * Copyright (c) 2014, 2015 IBM Corp.
  *
  * All rights reserved. This program and the accompanying materials
@@ -15,18 +16,18 @@
  *    Ian Craggs - make sure QoS2 processing works, and add device headers
  *******************************************************************************/
 
- /**
-  This is a sample program to illustrate the use of the MQTT Client library
-  on the mbed platform.  The Client class requires two classes which mediate
-  access to system interfaces for networking and timing.  As long as these two
-  classes provide the required public programming interfaces, it does not matter
-  what facilities they use underneath. In this program, they use the mbed
-  system libraries.
+/**
+ This is a sample program to illustrate the use of the MQTT Client library
+ on the mbed platform.  The Client class requires two classes which mediate
+ access to system interfaces for networking and timing.  As long as these two
+ classes provide the required public programming interfaces, it does not matter
+ what facilities they use underneath. In this program, they use the mbed
+ system libraries.
 
- */
+*/
 
- // change this to 0 to output messages to serial instead of LCD
-#define USE_LCD 1
+// change this to 0 to output messages to serial instead of LCD
+#define USE_LCD 0
 
 #if USE_LCD
 #include "C12832.h"
@@ -49,82 +50,91 @@
 #include "MQTTmbed.h"
 #include "MQTTClient.h"
 
-int arrivedcount = 0;
+Serial pc(USBTX, USBRX);
+
+static const char alphanum[] =
+"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 
+int stringLength = sizeof(alphanum) - 1;
+// use for random
+#include "MMA7660.h"
+ 
+MMA7660 MMA(p28, p27);
 
-void messageArrived(MQTT::MessageData& md)
+char genRandom()
 {
-    MQTT::Message &message = md.message;
-    logMessage("Message arrived: qos %d, retained %d, dup %d, packetid %d\r\n", message.qos, message.retained, message.dup, message.id);
-    logMessage("Payload %.*s\r\n", message.payloadlen, (char*)message.payload);
-    ++arrivedcount;
+    if (MMA.testConnection())
+        logMessage("get seed: Please shake the board for 1s \r\n");
+    int x;    
+    for (int i=0; i < 5; i++) {
+        x=(int) (MMA.z() * MMA.z() * MMA.z()*100)% 65;
+        //logMessage("seed: %d\r\n", x);
+        wait_ms(200);
+    }
+    srand (x);
+    return alphanum[rand() % stringLength];
 }
 
-
 int main(int argc, char* argv[])
 {
-    float version = 0.6;
-    char* topic = "mbed-sample";
+    float version = 0.71;
+    char* topic = "mbed/sample/Eth1";
 
-    logMessage("HelloMQTT: version is %.2f\r\n", version);
+    logMessage("MQTT Publish PE: version is %.2f\r\n", version);
 
+    // connect to Ethernet-LAN with DHCP
     NetworkInterface* network = easy_connect(true);
     if (!network) {
         return -1;
     }
-
+    
+    // connect to broker over Ethernet-LAN
     MQTTNetwork mqttNetwork(network);
-
     MQTT::Client<MQTTNetwork, Countdown> client = MQTT::Client<MQTTNetwork, Countdown>(mqttNetwork);
 
-    const char* hostname = "m2m.eclipse.org";
+    const char* hostname = "broker.hivemq.com";     // local RPi: 172.16.63.188; broker.hivemq.com: 35.157.21.220
     int port = 1883;
     logMessage("Connecting to %s:%d\r\n", hostname, port);
+
     int rc = mqttNetwork.connect(hostname, port);
     if (rc != 0)
         logMessage("rc from TCP connect is %d\r\n", rc);
 
     MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
     data.MQTTVersion = 3;
-    data.clientID.cstring = "mbed-sample";
-    data.username.cstring = "testuser";
-    data.password.cstring = "testpassword";
+    
+    // generate a unique random Client-ID
+    char str[20] ="mbed-clientID-";
+    srand(time(NULL));
+    int i;
+    for(i = 14; i < 18; ++i) {
+        str[i] = genRandom();
+    }
+    str[i] = 0;
+    data.clientID.cstring = str; 
+    logMessage("ClientID: %s\r\n", data.clientID.cstring);
+    // only if authentication is used (not now):
+    // data.username.cstring = "testuser";
+    // data.password.cstring = "testpassword";
     if ((rc = client.connect(data)) != 0)
         logMessage("rc from MQTT connect is %d\r\n", rc);
 
-    if ((rc = client.subscribe(topic, MQTT::QOS2, messageArrived)) != 0)
-        logMessage("rc from MQTT subscribe is %d\r\n", rc);
-
     MQTT::Message message;
 
-    // QoS 0
-    char buf[100];
-    sprintf(buf, "Hello World!  QoS 0 message from app version %f\r\n", version);
-    message.qos = MQTT::QOS0;
-    message.retained = false;
-    message.dup = false;
-    message.payload = (void*)buf;
-    message.payloadlen = strlen(buf)+1;
-    rc = client.publish(topic, message);
-    while (arrivedcount < 1)
-        client.yield(100);
+    // publish 5 messages
+    for(int t=0; t<5; t++) {
+        char buf[100];
+        sprintf(buf, "28.4.2017/16:30/21"); // published message
+        message.qos = MQTT::QOS0;
+        message.retained = false;
+        message.dup = false;
+        message.payload = (void*)buf;
+        message.payloadlen = strlen(buf)+1;
+        rc = client.publish(topic, message);
+        wait(2);
+    }
 
-    // QoS 1
-    sprintf(buf, "Hello World!  QoS 1 message from app version %f\r\n", version);
-    message.qos = MQTT::QOS1;
-    message.payloadlen = strlen(buf)+1;
-    rc = client.publish(topic, message);
-    while (arrivedcount < 2)
-        client.yield(100);
-
-    // QoS 2
-    sprintf(buf, "Hello World!  QoS 2 message from app version %f\r\n", version);
-    message.qos = MQTT::QOS2;
-    message.payloadlen = strlen(buf)+1;
-    rc = client.publish(topic, message);
-    while (arrivedcount < 3)
-        client.yield(100);
-
+    // unsubscribe and disconnect from broker
     if ((rc = client.unsubscribe(topic)) != 0)
         logMessage("rc from unsubscribe was %d\r\n", rc);
 
@@ -133,7 +143,7 @@
 
     mqttNetwork.disconnect();
 
-    logMessage("Version %.2f: finish %d msgs\r\n", version, arrivedcount);
+    logMessage("Version %.2f: finished\r\n", version);
 
     return 0;
 }

--- a/mbed-os.lib	Tue Jan 10 18:10:17 2017 -0600
+++ b/mbed-os.lib	Thu May 04 10:07:14 2017 +0000
@@ -1,1 +1,1 @@
-https://github.com/ARMmbed/mbed-os/#2885c1b41e63158cb6faf5f107cd821ae06ef26c
+https://github.com/ARMmbed/mbed-os/#ed4febefdede4e88743ca12909b7bc9a3993889a

--- a/mbed_app.json	Tue Jan 10 18:10:17 2017 -0600
+++ b/mbed_app.json	Thu May 04 10:07:14 2017 +0000
@@ -10,39 +10,39 @@
         },
         "esp8266-tx": {
             "help": "Pin used as TX (connects to ESP8266 RX)",
-            "value": "D1"
+            "value": "p28"
         },
         "esp8266-rx": {
             "help": "Pin used as RX (connects to ESP8266 TX)",
-            "value": "D0"
+            "value": "p27"
         },
         "esp8266-ssid": {
-            "value": "\"SSID\""
+            "value": "\"cisco\""
         },
         "esp8266-password": {
-            "value": "\"Password\""
+            "value": "\"ciscoclass\""
         },
         "esp8266-debug": {
             "value": true
         },
         "lcd-mosi": {
-            "value": "D11",
+            "value": "p5",
             "macro_name": "LCD_MOSI"
         },
         "lcd-sck": {
-            "value": "D13",
+            "value": "p7",
             "macro_name": "LCD_SCK"
         },
         "lcd-miso": {
-            "value": "D12",
+            "value": "p6",
             "macro_name": "LCD_MISO"
         },
         "lcd-a0": {
-            "value": "D7",
+            "value": "p8",
             "macro_name": "LCD_A0"
         },
         "lcd-ncs": {
-            "value": "D10",
+            "value": "p11",
             "macro_name": "LCD_NCS"
         }
     },