Diff: main.cpp

Revision:

24:cc01ff2c2603

Parent:

21:a68bd76740f9

Child:

25:bfdd064b9d99

--- a/main.cpp	Tue Jan 16 13:41:29 2018 +0000
+++ b/main.cpp	Thu Jun 11 14:09:40 2020 +0000
@@ -13,127 +13,162 @@
  * Contributors:
  *    Ian Craggs - initial API and implementation and/or initial documentation
  *    Ian Craggs - make sure QoS2 processing works, and add device headers
+ *
+ * Adaptation STM32 NUCLEO and mosquitto.org : C.Dupaty
+ * 06/2020
+ * 
+ This demo works on NUCLEO STM32.
+WIFI link with ESP8266 connected
+Configuration in mbed_app.json
+target_overrides for the UART connection of the ESP8266 and the WIFI connection (SSID / PASS)
+MQTT parameters are configured in #define below
+if receive payload with first q -> exit
+if receive payload with first l -> toggle LED1 on NUCLEO
+ * 
  *******************************************************************************/
 
- /**
-  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 1 to output messages to LCD instead of serial
-#define USE_LCD 0
-
-#if USE_LCD
-#include "C12832.h"
-
-// the actual pins are defined in mbed_app.json and can be overridden per target
-C12832 lcd(LCD_MOSI, LCD_SCK, LCD_MISO, LCD_A0, LCD_NCS);
-
-#define logMessage lcd.cls();lcd.printf
-
-#else
-
-#define logMessage printf
-
-#endif
-
-#define MQTTCLIENT_QOS2 1
-
 #include "easy-connect.h"
 #include "MQTTNetwork.h"
 #include "MQTTmbed.h"
 #include "MQTTClient.h"
 
-int arrivedcount = 0;
+DigitalOut led(LED1);
+Serial pc(USBTX, USBRX);
 
+#define board "NUCLEO_F411RE"
+/*
+MQTT QOS,  There are 3 QoS levels in MQTT
+At most once (MQTT::QOS0)
+At least once (MQTT::QOS1)
+Exactly once (MQTT::QOS2).
+*/
+#define quality MQTT::QOS0
+/*
+retained flag : The broker stores the last retained message and the corresponding QoS for that topic. 
+Each client that subscribes to a topic pattern that matches the topic of the retained 
+message receives the retained message immediately after they subscribe. 
+The broker stores only one retained message per topic.
+*/
+#define ret false
+/*
+dup flag : The flag indicates that the message is a duplicate 
+and was resent because the intended recipient (client or broker) did not acknowledge the original message.
+*/
+#define dupli false
+
+//DigitalIn btn(USER_BUTTON); //PC13 sur F411
+DigitalIn btn(PA_8,PullUp);   // button connected with internal pullup
+
+const char* hostname = "test.mosquitto.org";
+const int port = 1883;
+char* ID ="mbedSTM32Fourcade";
+char* user =NULL;       // user & pass = NULL for broker with no credential.   
+char* pass =NULL;
+const char* topic = "topic0";
+int arrivedcount=0;
+bool quit=false;
+
+NetworkInterface* network = easy_connect(true);
+MQTTNetwork mqttNetwork(network);
+MQTT::Client<MQTTNetwork, Countdown> client(mqttNetwork);
+MQTT::Message message;
+MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
 
 void messageArrived(MQTT::MessageData& md)
 {
     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;
+    pc.printf("\x1B[33m");   // yellow
+    pc.printf("Message arrived -> qos %d, retained %d, dup %d, packetid %d\r\n", message.qos, message.retained, message.dup, message.id);
+    pc.printf("Payload -> %.*s\r\n", message.payloadlen, (char*)message.payload);
+    ++arrivedcount;    
+    if (*(char*)message.payload=='q') 
+                    {
+                    pc.printf("\x1B[31m");   // red
+                    pc.printf("Exit command received\n\r");    
+                    quit=true;
+                    }
+    if (*(char*)message.payload=='l') 
+                    {
+                    led=!led;
+                    pc.printf("\x1B[31m");   // red
+                    pc.printf("toggle LED\n\r");
+                    }
+    pc.printf("\x1B[0m"); // raz
 }
 
+void connection(void)
+{
+int rc;
+    pc.printf("\x1B[32m");   // green
+    pc.printf("Connecting to MQTT broker %s:%d\r\n", hostname, port);
+   
+    if ((rc = client.connect(data)) != 0)
+        pc.printf("rc from MQTT connect is %d\r\n", rc);
+    else pc.printf("connection MQTT OK ID:%s USER:%s PASS:%s\r\n",ID,user,pass);
+
+    if ((rc = client.subscribe(topic, quality, messageArrived)) != 0)
+        pc.printf("rc from MQTT subscribe is %d\r\n", rc);
+        else pc.printf("Subscribe MQTT OK topic:%s quality:%d\r\n",topic,quality);
+    pc.printf("\x1B[0m"); // raz
+}
+
+void deconnection(void)
+{
+ int rc;
+  pc.printf("\x1B[36m");   // cyan
+ if ((rc = client.unsubscribe(topic)) != 0) pc.printf("rc from unsubscribe was %d\r\n", rc);
+    else pc.printf("unsubscribe OK \r\n");
+    if ((rc = client.disconnect()) != 0) pc.printf("rc from disconnect was %d\r\n", rc);
+    else pc.printf("disconnect OK\r\n");
+    mqttNetwork.disconnect();
+    pc.printf("\x1B[0m"); // raz
+}
 
 int main(int argc, char* argv[])
 {
-    float version = 0.6;
-    char* topic = "mbed-sample";
-
-    logMessage("HelloMQTT: version is %.2f\r\n", version);
-
-    NetworkInterface* network = easy_connect(true);
-    if (!network) {
-        return -1;
+    int rc;
+    int cpt=0;
+    char buf[100];
+    
+    //pc.printf("\x1B[2J");  //efface ecran
+    //pc.printf("\x1B[0;0H");   // curseur en 0,0
+    pc.printf("\x1B[1m");   // brillant
+    pc.printf("\r\nMQTT test on %s\r\n",board);
+    pc.printf("--------------------------\r\n\r\n");
+    pc.printf("\x1B[33m");   // yellow
+    wait(1);
+  
+// TCP connection
+    mqttNetwork.connect(hostname, port);
+    if (rc != 0) pc.printf("rc from TCP connect is %d\r\n", rc);
+    else pc.printf("WIFI network connection OK\r\n");
+    
+// MQTT data
+    data.MQTTVersion = 3;
+    data.clientID.cstring = ID;
+    data.username.cstring = user;
+    data.password.cstring = pass;
+    message.qos = quality;
+    message.retained = ret;
+    message.dup = dupli;
+    message.payload = (void*)buf;
+    connection();
+    while(!quit)
+    {
+        pc.printf("---> Press button to send : %s<--- \n\r",topic);
+        while(btn);
+        while(!btn);
+        //connection();
+        sprintf(buf, "Message from %s number -> %d \r\n", board,++cpt);
+        pc.printf("Send message -> %s\n\r",buf);
+        message.payloadlen = strlen(buf)+1;
+        if ((rc = client.publish(topic, message)) !=0) pc.printf("rc publication error %d\r\n", rc);
+        client.yield(100);
+        //deconnection();
     }
 
-    MQTTNetwork mqttNetwork(network);
-
-    MQTT::Client<MQTTNetwork, Countdown> client(mqttNetwork);
-
-    const char* hostname = "m2m.eclipse.org";
-    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";
-    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);
-
-    // 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);
-
-    if ((rc = client.unsubscribe(topic)) != 0)
-        logMessage("rc from unsubscribe was %d\r\n", rc);
-
-    if ((rc = client.disconnect()) != 0)
-        logMessage("rc from disconnect was %d\r\n", rc);
-
-    mqttNetwork.disconnect();
-
-    logMessage("Version %.2f: finish %d msgs\r\n", version, arrivedcount);
+    deconnection();
+    pc.printf("Disconnect from MQTT network. End of program, %d messages arrived\r\n",arrivedcount);
 
     return 0;
 }