thingsboard-client-sdk: [Question] Problem subscribing to shared attributes

Hey guys,

i want to subscribe my client to shared attributes and RPC methods simultaneously, like here #63. The problem is that i don’t get that far, because of the code not compiling. The error lays in the code section where define the subsricption to shared attribute updates. I followed the example 0006 from the v0.8.0 release. Did i miss something?

Any advice is very appriciated! Thank you in advance.

Greetings Reno

Here is my code:

#include "Pinout.h"       // Pinbelegung des NodeMCUs
#include "ESP8266WiFi.h"  // "File" > "Preferences..." > "Additional board manager URls:" > http://arduino.esp8266.com/stable/package_esp8266com_index.json
#include "ThingsBoard.h"  // Version v0.8.0 by ThingsBoard

// Intenet-Zugangsdaten:
#define WIFI_AP "XXX"
#define WIFI_PASSWORD "XXX"

// ThingsBoard (TB) Zugangsdaten:
#define TB_TOKEN "XXX"  // Access Token des TB-Devices (Aktuator)
#define TB_SERVER "demo.thingsboard.io"  // Alternativ IPv4 des Servers über den die TB gehostet wird (Bsp.: Docker)
#define TB_PORT 1883


constexpr std::array<const char*, 7U> SUBSCRIBED_SHARED_ATTRIBUTES = {
  "fw_checksum",
  "fw_checksum_algorithm",
  "fw_size",
  "fw_tag",
  "fw_title",
  "fw_version",
  "test"
};

// Initialisierung
WiFiClient wifiClient;                      // Erstellung einer ESP8266WiFi-Instanz des Typs
ThingsBoard client(wifiClient);   // Instanz wird zu einem TB-Client (?) Sized<256>

// Weitere Parameter:
int status = WL_IDLE_STATUS;
/* unsigned long lastSend;                     // Updatetimer */

void setup() {

  pinMode(LED_BUILTIN, OUTPUT);  // Auf NodeMCU integrierte LED wird angemacht (Betreibszustandanzeige)
  Serial.begin(9600);                            // Initiierung des seriellen Monitors (SM) zum Debugen (Baudrate)
  InitWiFi();                                    // Aufbau der Internetverbindung
  client.connect(TB_SERVER, TB_TOKEN, TB_PORT);  // Verbindung mit dem MQTT-Broker von TB (Port:)
  /*   lastSend = 0;                                   // Initialisierung des Updatetimers */
}

void loop() {

  // Wiederherstellung der Verbindung zu TB (+ Prüfung der Internetverbindung)
  if (!client.connected()) {
    reconnect();
  }

  subscribeRPC();               // Aufbau und Aufrechterhaltung der RPC-Kommunikation mit TB
  subscribeSharedAttributes();  // Subscribt Änderungen von Shared Attributes

  client.loop();
}

///////////////////// RPC-Kommunikation /////////////////////

RPC_Response processSwitchChange(const RPC_Data& data) {
  Serial.println("Received 'processSwitchChange'-method: ");
  char params[10];
  serializeJson(data, params);
  String _params = params;

  if (_params == "true") {
    Serial.println("SWITCH: ON");
    client.sendAttributeBool("ledStatus", true);
    return RPC_Response("processSwitchChange", "true");

  } else if (_params == "false") {
    Serial.println("SWITCH: OFF");
    client.sendAttributeBool("ledStatus", false);
    return RPC_Response("processSwitchChange", "false");
  }
}

const size_t RPCCallbackSize = 1;
RPC_Callback RPCCallbacks[RPCCallbackSize] = {
  { "processSwitchChange", processSwitchChange }
};

bool rpc_subscribed = false;  //RPC-Subscribe Status


///////////////////// Shared Attributes /////////////////////

void processSharedAttributeUpdate(const Shared_Attribute_Data &data) {
  for (auto it = data.begin(); it != data.end(); ++it) {
    Serial.println(it->key().c_str());
    // Shared attributes have to be parsed by their type.
    Serial.println(it->value().as<const char*>());
  }

  int jsonSize = JSON_STRING_SIZE(measureJson(data));
  char buffer[jsonSize];
  serializeJson(data, buffer, jsonSize);
  Serial.println(buffer);
}

const Shared_Attribute_Callback SharedAttributesCallback(SUBSCRIBED_SHARED_ATTRIBUTES.cbegin(), SUBSCRIBED_SHARED_ATTRIBUTES.cend(), processSharedAttributeUpdate);

/* const size_t SharedCallbackSize = 1;
Shared_Attribute_Callback SharedAttributesCallback[SharedCallbackSize] = {
  processSharedAttributeUpdate
}; */ // TB SDK v0.6

bool att_subscribed = false;

//////////////////// Weitere Funktionen /////////////////////

// Funktion - Aufbau der Internetverbindung
void InitWiFi() {

  Serial.print("Connecting to Access Point...");
  WiFi.begin(WIFI_AP, WIFI_PASSWORD);  // Eingabe der Zugangsdaten

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);  // "." bis Verbindung hergestellt ist
    Serial.print(".");
  }
  Serial.println();
  Serial.print("Connected! IP address: ");
  Serial.println(WiFi.localIP());
}

// Funktion - Wiederherstellung der Verbindung zu TB
void reconnect() {
  while (!client.connected()) {
    status = WiFi.status();

    if (status != WL_CONNECTED) {  // Prüft zunächst die Internetverbindung
      InitWiFi();
    }

    // Wiederherstellung der Verbindung mit dem festgelegten TB-Device
    Serial.print("Connecting to ThingsBoard Device ...");
    if (client.connect(TB_SERVER, TB_TOKEN, TB_PORT)) {
      Serial.println("[DONE]");
    } else {
      Serial.print("[FAILED] Retrying in 5 seconds]");
      delay(5000);
      //Serial.print(client.state());
      //Serial.println(" : retrying in 5 seconds]");
    }
  }
}

// Funktion - Aufbau und Aufrechterhaltung der RPC-Kommunikation
void subscribeRPC() {
  if (!rpc_subscribed) {
    Serial.println("Subscribing for RPC...");

    if (!client.RPC_Subscribe(RPCCallbacks, RPCCallbackSize)) {
      Serial.println("Failed to subscribe for RPC");
      return;
    }

    Serial.println("RPC-Subscription done");
    rpc_subscribed = true;
  }
}

// Funktion - Subsribt Änderungen 
void subscribeSharedAttributes() {

  if (!att_subscribed) {
    Serial.println("Subscribing for shared attribute updates...");

    if (!client.Shared_Attributes_Subscribe(SharedAttributesCallback)) {
      Serial.println("Failed to subscribe for shared attribute updates");
      return;
    }

    Serial.println("Shared Attributes-Subscription done");
    att_subscribed = true;
  }
}

And this is the error i get:

C:\Users\Renaud Kenfack\Documents\Arduino\Code_Aktuator_TBv080\Code_Aktuator_TBv080.ino:98:162: error: no matching function for call to 'Shared_Attribute_Callback::Shared_Attribute_Callback(std::array<const char*, 7>::const_iterator, std::array<const char*, 7>::const_iterator, void (&)(const Shared_Attribute_Data&))'
   98 | }
      |                                                                                                                                                                  ^
In file included from C:\Users\Renaud Kenfack\Documents\Arduino\Code_Aktuator_TBv080\Code_Aktuator_TBv080.ino:3:
c:\Users\Renaud Kenfack\Documents\Arduino\libraries\ThingsBoard\src/ThingsBoard.h:145:12: note: candidate: 'Shared_Attribute_Callback::Shared_Attribute_Callback(Shared_Attribute_Callback::processFn)'
  145 |     inline Shared_Attribute_Callback(processFn cb)
      |            ^~~~~~~~~~~~~~~~~~~~~~~~~
c:\Users\Renaud Kenfack\Documents\Arduino\libraries\ThingsBoard\src/ThingsBoard.h:145:12: note:   candidate expects 1 argument, 3 provided
c:\Users\Renaud Kenfack\Documents\Arduino\libraries\ThingsBoard\src/ThingsBoard.h:140:12: note: candidate: 'Shared_Attribute_Callback::Shared_Attribute_Callback()'
  140 |     inline Shared_Attribute_Callback()
      |            ^~~~~~~~~~~~~~~~~~~~~~~~~
c:\Users\Renaud Kenfack\Documents\Arduino\libraries\ThingsBoard\src/ThingsBoard.h:140:12: note:   candidate expects 0 arguments, 3 provided
c:\Users\Renaud Kenfack\Documents\Arduino\libraries\ThingsBoard\src/ThingsBoard.h:131:7: note: candidate: 'constexpr Shared_Attribute_Callback::Shared_Attribute_Callback(const Shared_Attribute_Callback&)'
  131 | class Shared_Attribute_Callback {
      |       ^~~~~~~~~~~~~~~~~~~~~~~~~
c:\Users\Renaud Kenfack\Documents\Arduino\libraries\ThingsBoard\src/ThingsBoard.h:131:7: note:   candidate expects 1 argument, 3 provided
c:\Users\Renaud Kenfack\Documents\Arduino\libraries\ThingsBoard\src/ThingsBoard.h:131:7: note: candidate: 'constexpr Shared_Attribute_Callback::Shared_Attribute_Callback(Shared_Attribute_Callback&&)'
c:\Users\Renaud Kenfack\Documents\Arduino\libraries\ThingsBoard\src/ThingsBoard.h:131:7: note:   candidate expects 1 argument, 3 provided
C:\Users\Renaud Kenfack\Documents\Arduino\Code_Aktuator_TBv080\Code_Aktuator_TBv080.ino: In function 'void subscribeSharedAttributes()':
C:\Users\Renaud Kenfack\Documents\Arduino\Code_Aktuator_TBv080\Code_Aktuator_TBv080.ino:167:69: error: no matching function for call to 'ThingsBoardSized<>::Shared_Attributes_Subscribe(const Shared_Attribute_Callback&)'
  167 | 
      |                                                                     ^
In file included from C:\Users\Renaud Kenfack\Documents\Arduino\Code_Aktuator_TBv080\Code_Aktuator_TBv080.ino:3:
c:\Users\Renaud Kenfack\Documents\Arduino\libraries\ThingsBoard\src/ThingsBoard.h:613:10: note: candidate: 'bool ThingsBoardSized<PayloadSize, MaxFieldsAmt, Logger>::Shared_Attributes_Subscribe(const Shared_Attribute_Callback*, size_t) [with unsigned int PayloadSize = 64; unsigned int MaxFieldsAmt = 8; Logger = ThingsBoardDefaultLogger; size_t = unsigned int]'
  613 |     bool Shared_Attributes_Subscribe(const Shared_Attribute_Callback *callbacks, size_t callbacks_size) {
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~
c:\Users\Renaud Kenfack\Documents\Arduino\libraries\ThingsBoard\src/ThingsBoard.h:613:10: note:   candidate expects 2 arguments, 1 provided

exit status 1

Compilation error: no matching function for call to 'Shared_Attribute_Callback::Shared_Attribute_Callback(std::array<const char*, 7>::const_iterator, std::array<const char*, 7>::const_iterator, void (&)(const Shared_Attribute_Data&))'