Buongiorno chiedo il vostro aiuto per il seguente problema.
Progetto: Visualizzare su pagina web l'altezza liquidi contenuti in vasca con widgets su dashboard.
Componenti: Arduino nano 33 IoT, modulo HC-SR04
Software: Arduino cloud + Arduino create Agent
Problema: Il monitor seriale visualizza correttamente la variabile "lettura" , ma la "things" di arduino IoT no e, di conseguenza, nemmeno i sensori grafici.
Ho provato a cambiare tipologia di variabile senza risultato.
Il nano iot 33 è ovviamente on-line
Codice sketch:
#include <SPI.h>
#include <WiFiNINA.h>
#define ULTRASONIC_TRIG_PIN 11 // pin TRIG is D11
#define ULTRASONIC_ECHO_PIN 12 //pin ECHO is D12
#include "thingProperties.h"
void setup() {
// Initialize serial and wait for port to open:
Serial.begin(9600);
// This delay gives the chance to wait for a Serial Monitor without blocking if none is found
delay(1500);
// Defined in thingProperties.h
initProperties();
// Connect to Arduino IoT Cloud
ArduinoCloud.begin(ArduinoIoTPreferredConnection);
setDebugMessageLevel(2);
ArduinoCloud.printDebugInfo();
pinMode(ULTRASONIC_TRIG_PIN, OUTPUT); // The trigger is defined as output
pinMode(ULTRASONIC_ECHO_PIN, INPUT); // The Echo is defined as input
}
void loop() {
ArduinoCloud.update();
long duration;
long lettura;
digitalWrite(ULTRASONIC_TRIG_PIN, LOW);
delayMicroseconds(2);
digitalWrite(ULTRASONIC_TRIG_PIN, HIGH); // With this we send an ultrasonic sound
delayMicroseconds(10); // We will send for 10 milliseconds
digitalWrite(ULTRASONIC_TRIG_PIN, LOW); // Now we stop transmitting
duration = pulseIn(ULTRASONIC_ECHO_PIN, HIGH); // Here we measure how long it takes before we get the ultrasound back.
lettura = (duration / 2) / 29.1; // With this we ensure that the values in cm are displayed in the IoT cloud
Serial.print("distanza "); // To be able to check whether everything is working without an IoT Cloud connection, we also display it in the Monitor
Serial.println(lettura);
Serial.println(" cm");
}
/*
Since AfstandSensor is READ_WRITE variable, onAfstandSensorChange() is
executed every time a new value is received from IoT Cloud.
*/
void onAfstandSensorChange() {
// Add your code here to act upon AfstandSensor change
}
/*
Since Lettura is READ_WRITE variable, onLetturaChange() is
executed every time a new value is received from IoT Cloud.
*/
void onLetturaChange() {
// Add your code here to act upon Lettura change
}
Codice thingPropereties.h
// Code generated by Arduino IoT Cloud, DO NOT EDIT.
#include <ArduinoIoTCloud.h>
#include <Arduino_ConnectionHandler.h>
const char SSID[] = SECRET_SSID; // Network SSID (name)
const char PASS[] = SECRET_OPTIONAL_PASS; // Network password (use for WPA, or use as key for WEP)
int lettura;
void initProperties(){
ArduinoCloud.addProperty(lettura, READ, 8 * SECONDS, NULL);
}
WiFiConnectionHandler ArduinoIoTPreferredConnection(SSID, PASS);
