Condition before array

Projects Programming
1

I have a program that sniffs nearby networks and place it in a json array. But I need to print the rssi values to meters based on a set of conditions.

This is the program that im working on

#include <ArduinoJson.h>
#include <ESP8266WiFi.h>
#include <PubSubClient.h>
// #define MQTT_MAX_PACKET_SIZE 2048

const char* ssid = "ARSARO";
const char* password = "arsaro_sti";
const char* mqtt_server = "192.168.1.2";

WiFiClient espClient;
PubSubClient client(espClient);

void callback(String topic, byte* message, unsigned int length) {
 // Serial.print("Message arrived on topic: ");
  Serial.print(topic);
  Serial.print(". Message: ");
  String messageTemp;
  
  for (int i = 0; i < length; i++) {
    Serial.print((char)message[i]);
    messageTemp += (char)message[i];
  }
  Serial.println();


  Serial.println();
}



void reconnect() {
  // Loop until we're reconnected
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
    // Attempt to connect
  
    if (client.connect("ESP8266Client")) {
      Serial.println("connected");  
      // Subscribe or resubscribe to a topic
      // You can subscribe to more topics (to control more LEDs in this example)
      client.subscribe("name/test");
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      // Wait 5 seconds before retrying
      delay(5000);
    }
  }
}



DynamicJsonDocument getAccessPointsAsDynamicJson() { 
  DynamicJsonDocument doc(10000); 
  JsonArray array = doc.createNestedArray("Networks"); 
  Serial.println("Start scanning"); 
  int n = WiFi.scanNetworks();
  Serial.print(n); 
  Serial.println(" networks found"); 
  for (int i = 0; i < n; ++i)
  { JsonObject 
  nested = array.createNestedObject(); 
  nested["SSID"] = WiFi.SSID(i); 
 // nested["bssid"] = WiFi.BSSID(i); 
  nested["RSSI"] = WiFi.RSSI(i);
 // nested["channel"] = WiFi.channel(i); 
  } 
  return doc; 
  }

void setSerial() 
{ 
  Serial.begin(115200);

while (!Serial) continue;
}

void setup() 
{ 
  
  setSerial();
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  // Print local IP address and start web server
  Serial.println("");
  Serial.println("WiFi connected.");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());

  client.setServer(mqtt_server, 1883);
  client.setCallback(callback);

}

void loop()
{ 

    if (!client.connected()) {
    reconnect();
  }
  if(!client.loop())
    client.connect("ESP8266Client");
    
 DynamicJsonDocument doc = getAccessPointsAsDynamicJson(); 


String myOutput; serializeJson(doc, myOutput);
char myOutput_char[200];
myOutput.toCharArray(myOutput_char, 200);
// Serial.println(myOutput);
 client.publish("rssi/test",myOutput_char);
 delay(1000);

}

These are the conditions that I want the RSSI value to go through before entering the array.

if (RSSI > -40) {
meters = 1;
} else if (RSSI <= -41 & RSSI >= -51) {
meters = 1.5;
} else if (RSSI <= -52 & RSSI >= -62) {
meters = 2;
} else if (RSSI <= -63 & RSSI >= -73) {
meters = 2.5;
} else if (RSSI <= -74 & RSSI >= -84) {
meters = 3;
} else if (RSSI <= -75 & RSSI >= -85) {
meters = 3.5;
} else if (RSSI <= -86 & RSSI >= -100) {
meters = 4;
} else {
meters = 5;
}

I want to use the said conditions on the scanned RSSI values before putting it inside the array so when I send it via mqtt, it will show the range via meters. Does that make sense?

2

Do you ha e a question?

3

Sorry, I want to use the said conditions on the scanned RSSI values before putting it inside the array so when I send it via mqtt, it will show the range via meters. Does that make sense?

4

'&' is the bit-wise AND operator. You probably want to use '&&' which is the logical AND operator.