Diff: main.cpp

Revision:

0:a7eae6598aa6

diff -r 000000000000 -r a7eae6598aa6 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Apr 26 08:48:32 2021 +0000
@@ -0,0 +1,304 @@
+/* SpwfInterface NetworkSocketAPI Example Program
+ * Copyright (c) 2015 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "mbed.h"
+#include "SpwfInterface.h"
+#include "TCPSocket.h"
+#include "MQTTClient.h"
+#include "MQTTWiFi.h"
+#include <ctype.h>
+#include "x_nucleo_iks01a1.h"
+#include "X_NUCLEO_NFC01A1.h"
+#include "NDefLib/NDefNfcTag.h"
+#include "NDefLib/RecordType/RecordURI.h"
+
+//------------------------------------
+// Hyperterminal configuration
+// 9600 bauds, 8-bit data, no parity
+//------------------------------------
+Serial pc(SERIAL_TX, SERIAL_RX); 
+DigitalOut myled(LED1);
+bool quickstartMode = true;    
+
+#define ORG_QUICKSTART           // comment to connect to play.internetofthings.ibmcloud.com
+//#define SUBSCRIBE              // uncomment to subscribe to broker msgs (not to be used with IBM broker) 
+#define X_NUCLEO_NFC01A1_PRESENT // uncomment to add NFC support
+    
+#define MQTT_MAX_PACKET_SIZE 250   
+#define MQTT_MAX_PAYLOAD_SIZE 300 
+
+ // Configuration values needed to connect to IBM IoT Cloud
+#define BROKER_URL ".messaging.internetofthings.ibmcloud.com";     
+#ifdef ORG_QUICKSTART
+#define ORG "quickstart"     // connect to quickstart.internetofthings.ibmcloud.com/ For a registered connection, replace with your org 
+#define ID ""
+#define AUTH_TOKEN ""
+#define DEFAULT_TYPE_NAME "iotsample-mbed-Nucleo"
+#else   // not def ORG_QUICKSTART
+#define ORG "play"             // connect to play.internetofthings.ibmcloud.com/ For a registered connection, replace with your org
+#define ID ""       // For a registered connection, replace with your id
+#define AUTH_TOKEN ""// For a registered connection, replace with your auth-token
+#define DEFAULT_TYPE_NAME "sensor"
+#endif
+#define TOPIC  "iot-2/evt/status/fmt/json" 
+
+#define TYPE DEFAULT_TYPE_NAME       // For a registered connection, replace with your type
+#define MQTT_PORT 1883
+#define MQTT_TLS_PORT 8883
+#define IBM_IOT_PORT MQTT_PORT
+// WiFi network credential
+#define SSID   ""  // Network must be visible otherwise it can't connect
+#define PASSW  ""
+#warning "Wifi SSID & password empty"
+    
+char id[30] = ID;                 // mac without colons  
+char org[12] = ORG;        
+int connack_rc = 0; // MQTT connack return code
+const char* ip_addr = "";
+char* host_addr = "";
+char type[30] = TYPE;
+char auth_token[30] = AUTH_TOKEN; // Auth_token is only used in non-quickstart mode
+bool netConnecting = false;
+int connectTimeout = 1000;
+bool mqttConnecting = false;
+bool netConnected = false;
+bool connected = false;
+int retryAttempt = 0;
+char subscription_url[MQTT_MAX_PAYLOAD_SIZE];
+
+PressureSensor *pressure_sensor;
+HumiditySensor *humidity_sensor;
+TempSensor *temp_sensor1;
+
+MQTT::Message message;
+MQTTString TopicName={TOPIC};
+MQTT::MessageData MsgData(TopicName, message);
+
+void subscribe_cb(MQTT::MessageData & msgMQTT) {
+    char msg[MQTT_MAX_PAYLOAD_SIZE];
+    msg[0]='\0';
+    strncat (msg, (char*)msgMQTT.message.payload, msgMQTT.message.payloadlen);
+    printf ("--->>> subscribe_cb msg: %s\n\r", msg);
+}
+
+int subscribe(MQTT::Client<MQTTWiFi, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTTWiFi* ipstack)
+{
+    char* pubTopic = TOPIC;    
+    return client->subscribe(pubTopic, MQTT::QOS1, subscribe_cb);
+}
+
+int connect(MQTT::Client<MQTTWiFi, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTTWiFi* ipstack)
+{ 
+    const char* iot_ibm = BROKER_URL; 
+
+    
+    char hostname[strlen(org) + strlen(iot_ibm) + 1];
+    sprintf(hostname, "%s%s", org, iot_ibm);
+    SpwfSAInterface& WiFi = ipstack->getWiFi();
+//    ip_addr = WiFi.get_ip_address();
+    // Construct clientId - d:org:type:id
+    char clientId[strlen(org) + strlen(type) + strlen(id) + 5];  
+    sprintf(clientId, "d:%s:%s:%s", org, type, id);  
+    sprintf(subscription_url, "%s.%s/#/device/%s/sensor/", org, "internetofthings.ibmcloud.com",id);
+
+    // Network debug statements 
+    LOG("=====================================\n\r");
+    LOG("Connecting WiFi.\n\r");
+    LOG("Nucleo IP ADDRESS: %s\n\r", WiFi.get_ip_address());
+    LOG("Nucleo MAC ADDRESS: %s\n\r", WiFi.get_mac_address());
+    LOG("Server Hostname: %s port: %d\n\r", hostname, IBM_IOT_PORT);
+//    for(int i = 0; clientId[i]; i++){  // set lowercase mac
+//       clientId[i] = tolower(clientId[i]); 
+//    }    
+    LOG("Client ID: %s\n\r", clientId);
+    LOG("Topic: %s\n\r",TOPIC);
+    LOG("Subscription URL: %s\n\r", subscription_url);
+    LOG("=====================================\n\r");
+    
+    netConnecting = true;
+    ipstack->open(&ipstack->getWiFi());
+    int rc = ipstack->connect(hostname, IBM_IOT_PORT, connectTimeout);    
+    if (rc != 0)
+    {
+        WARN("IP Stack connect returned: %d\n", rc);    
+        return rc;
+    }
+    printf ("--->TCP Connected\n\r");
+    netConnected = true;
+    netConnecting = false;
+
+    // MQTT Connect
+    mqttConnecting = true;
+    MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
+    data.MQTTVersion = 4;
+    data.struct_version=0;
+    data.clientID.cstring = clientId;
+ 
+    if (!quickstartMode) 
+    {        
+        data.username.cstring = "use-token-auth";
+        data.password.cstring = auth_token;
+    }   
+    if ((rc = client->connect(data)) == 0) 
+    {       
+        connected = true;
+        printf ("--->MQTT Connected\n\r");
+#ifdef SUBSCRIBE
+        if (!subscribe(client, ipstack)) printf ("--->>>MQTT subscribed to: %s\n\r",TOPIC);
+#endif           
+    }
+    else {
+        WARN("MQTT connect returned %d\n", rc);        
+    }
+    if (rc >= 0)
+        connack_rc = rc;
+    mqttConnecting = false;
+    return rc;
+}
+
+int getConnTimeout(int attemptNumber)
+{  // First 10 attempts try within 3 seconds, next 10 attempts retry after every 1 minute
+   // after 20 attempts, retry every 10 minutes
+    return (attemptNumber < 10) ? 3 : (attemptNumber < 20) ? 60 : 600;
+}
+
+void attemptConnect(MQTT::Client<MQTTWiFi, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTTWiFi* ipstack)
+{
+    connected = false;
+           
+    while (connect(client, ipstack) != MQTT_CONNECTION_ACCEPTED) 
+    {    
+        if (connack_rc == MQTT_NOT_AUTHORIZED || connack_rc == MQTT_BAD_USERNAME_OR_PASSWORD) {
+            printf ("File: %s, Line: %d Error: %d\n\r",__FILE__,__LINE__, connack_rc);        
+            return; // don't reattempt to connect if credentials are wrong
+        } 
+        int timeout = getConnTimeout(++retryAttempt);
+        WARN("Retry attempt number %d waiting %d\n", retryAttempt, timeout);
+        
+        // if ipstack and client were on the heap we could deconstruct and goto a label where they are constructed
+        //  or maybe just add the proper members to do this disconnect and call attemptConnect(...)        
+        // this works - reset the system when the retry count gets to a threshold
+        if (retryAttempt == 5)
+            NVIC_SystemReset();
+        else
+            wait(timeout);
+    }
+}
+
+int publish(MQTT::Client<MQTTWiFi, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTTWiFi* ipstack)
+{
+    MQTT::Message message;
+    char* pubTopic = TOPIC;
+            
+    char buf[MQTT_MAX_PAYLOAD_SIZE];
+    float temp, press, hum;
+    temp_sensor1->GetTemperature(&temp);
+    pressure_sensor->GetPressure(&press);
+    humidity_sensor->GetHumidity(&hum);
+    sprintf(buf,
+     "{\"d\":{\"ST\":\"Nucleo-IoT-mbed\",\"Temp\":%0.4f,\"Pressure\":%0.4f,\"Humidity\":%0.4f}}",
+              temp, press, hum);
+    message.qos = MQTT::QOS0;
+    message.retained = false;
+    message.dup = false;
+    message.payload = (void*)buf;
+    message.payloadlen = strlen(buf);
+    
+//    LOG("Publishing %s\n\r", buf);
+    printf("Publishing %s\n\r", buf);
+    return client->publish(pubTopic, message);
+} 
+    
+int main()
+{
+    const char * ssid = SSID; // Network must be visible otherwise it can't connect
+    const char * seckey = PASSW;
+    SpwfSAInterface spwf(D8, D2, false);
+    
+//    Timer tyeld;
+    myled=0;
+    DevI2C *i2c = new DevI2C(I2C_SDA, I2C_SCL);
+    i2c->frequency(400000);    
+    
+    X_NUCLEO_IKS01A1 *mems_expansion_board = X_NUCLEO_IKS01A1::Instance(i2c);   
+    pressure_sensor = mems_expansion_board->pt_sensor;
+    temp_sensor1 = mems_expansion_board->ht_sensor;  
+    humidity_sensor = mems_expansion_board->ht_sensor;  
+    
+    pc.printf("\r\nX-NUCLEO-IDW01M1 mbed Application\r\n");     
+    pc.printf("\r\nconnecting to AP\r\n");            
+
+   quickstartMode=false;
+   if (strcmp(org, "quickstart") == 0){quickstartMode = true;}
+   MQTTWiFi ipstack(spwf, ssid, seckey, NSAPI_SECURITY_WPA2);
+   MQTT::Client<MQTTWiFi, Countdown, MQTT_MAX_PACKET_SIZE> client(ipstack);
+   if (quickstartMode){
+        char mac[50];  // remove all : from mac
+        char *digit=NULL;
+        sprintf (id,"%s", "");                
+        sprintf (mac,"%s",ipstack.getWiFi().get_mac_address()); 
+        digit = strtok (mac,":");
+        while (digit != NULL)
+        {
+            strcat (id, digit);
+            digit = strtok (NULL, ":");
+        }     
+   }
+   attemptConnect(&client, &ipstack);
+   if (connack_rc == MQTT_NOT_AUTHORIZED || connack_rc == MQTT_BAD_USERNAME_OR_PASSWORD)    
+   {
+      while (true)
+      wait(1.0); // Permanent failures - don't retry
+   }
+#ifdef X_NUCLEO_NFC01A1_PRESENT      
+   // program NFC with broker URL        
+   X_NUCLEO_NFC01A1 *nfcNucleo = X_NUCLEO_NFC01A1::Instance(*i2c, NULL, X_NUCLEO_NFC01A1::DEFAULT_GPO_PIN, X_NUCLEO_NFC01A1::DEFAULT_RF_DISABLE_PIN, NC,NC,NC);  
+   NDefLib::NDefNfcTag& tag = nfcNucleo->getM24SR().getNDefTag();
+   printf("NFC Init done: !\r\n");
+   //open the i2c session with the nfc chip
+   if(tag.openSession()){
+       //create the NDef message and record
+       NDefLib::Message msg;
+       NDefLib::RecordURI rUri(NDefLib::RecordURI::HTTPS, subscription_url);
+       msg.addRecord(&rUri);
+        //write the tag
+        if(tag.write(msg)){
+            printf("Tag writed \r\n");
+        }
+        //close the i2c session
+        if(!tag.closeSession()){
+            printf("Error Closing the session\r\n");
+        }
+    }else printf("Error open Session\r\n");             
+#endif    
+   myled=1;         
+   int count = 0;    
+//    tyeld.start();    
+    while (true)
+    {
+        if (++count == 100)
+        {               // Publish a message every second
+            if (publish(&client, &ipstack) != 0) { 
+                myled=0;
+                attemptConnect(&client, &ipstack);   // if we have lost the connection                
+            } else myled=1;
+            count = 0;
+        }        
+//        int start = tyeld.read_ms();
+        client.yield(10);  // allow the MQTT client to receive messages
+//        printf ("tyeld: %d\n\r",tyeld.read_ms()-start);
+    }
+}