Portenta H7 code ready

Author: mcmchris

content/hardware/06.nicla/boards/nicla-sense-env/tutorials/03.elevator-monitoring-application-note/assets/nicla-count.png

@@ -124,6 +124,134 @@ The Nicla Vision will use a built-in FOMO model for face detection, with a very
 
 ### Portenta H7 Code
 
+Let's go through some important code sections to make this application fully operational, starting with the required libraries:
+
+- `Arduino_NiclaSenseEnv.h` includes the support for the Nicla Sense Env sensor data gathering.
+- `Wire.h` enables the I2C communication for the Nicla Sense Env and Nicla Vision boards.
+- `modulino.h` includes the support for the Modulino Pixels.
+  
+There is a header included in the project code for the Arduino Cloud configuration:
+
+- `thingProperties.h` includes the Wi-Fi® credentials and Arduino Cloud configuration.
+  
+This header includes other two libraries necessary for the cloud communication which are:
+
+- `ArduinoIoTCloud.h` enables Arduino Cloud integration. Search for *ArduinoIoTCloud* in the Library Manager to install it.
+- `Arduino_ConnectionHandler.h` manages the board's internet connectivity. Search for *Arduino_ConnectionHandler* in the Library Manager to install it.
+  
+```arduino
+// Include necessary libraries for Nicla Sense Env sensors and Arduino Cloud
+#include "Arduino_NiclaSenseEnv.h"
+
+// Automatically generated by Arduino Cloud for property synchronization
+#include "thingProperties.h"
+
+// Include support for the Modulino Pixels 
+#include <Modulino.h>
+
+// Include Wire library for I2C communication
+#include <Wire.h>
+
+// Set time interval (in milliseconds) for sensor readings (10 seconds)
+static const uint32_t READ_INTERVAL = 10000;
+uint32_t lastReadTime = 0;
+
+// Global Parameters
+byte people = 0;  // people count variable.
+
+// Sensor object for Nicla Sense Env data collection
+NiclaSenseEnv device;
+
+// Modulino Pixels object
+ModulinoPixels leds;
+
+// The Nicla Vision I2C address
+#define I2C_ADDR 0x35
+```
+In the `setup()` function, a variety of peripherals are initialized, including:
+
+- Serial communication
+- I2C connection
+- Arduino Cloud properties
+- Nicla Sense Env communication and sensor objects
+- Modulino Pixels
+
+```arduino
+void setup() {
+  // Initialize serial communication at 9600 baud rate
+  Serial.begin(9600);
+
+  // Short delay to wait for Serial Monitor to be ready
+  delay(1500);
+
+  Wire.begin();
+
+  // Initialize Cloud properties and connect to Arduino IoT Cloud
+  initProperties();
+  ArduinoCloud.begin(ArduinoIoTPreferredConnection);
+
+  // Debug information
+  setDebugMessageLevel(2);
+  ArduinoCloud.printDebugInfo();
+
+  // Initialize Nicla Sense Env sensors
+  if (device.begin()) {
+    Serial.println("- Nicla Sense Env board connected!");
+
+    auto temperatureSensor = device.temperatureHumiditySensor();
+    auto airQualitySensor = device.indoorAirQualitySensor();
+
+    // Set the sensor mode to indoor air quality
+    airQualitySensor.setMode(IndoorAirQualitySensorMode::indoorAirQuality);
+
+    // The ZMOD4410 can take a sample every 3 seconds in IAQ mode and requires 60 warm-up samples,
+    // meaning the sensor will take about 3 minutes to fully warm-up before accurate readings can
+    // be obtained. In this example, we allow 5 seconds for the sensor to start delivering data.
+
+  } else {
+    Serial.println("- ERROR: Nicla Sense Env device not found!");
+  }
+
+  Modulino.begin();
+  leds.begin();
+}
+```
+
+In the `loop()` function, the Nicla Sense Env sensores are read every 10 seconds, the people count is requested to the Nicla Vision and the Cloud connection is updated.
+
+```arduino
+void loop() {
+
+  // Get the current time
+  uint32_t currentTime = millis();
+
+  // Read sensors every 10 seconds
+  if (currentTime - lastReadTime >= READ_INTERVAL) {
+    lastReadTime = currentTime;
+    auto temperatureSensor = device.temperatureHumiditySensor();
+    auto airQualitySensor = device.indoorAirQualitySensor();
+    readSensors(temperatureSensor, airQualitySensor);
+  }
+  getPeopleCount(); // retrieve the people count from the Nicla Vision
+  delay(100);
+  // Update Arduino Cloud connection
+  ArduinoCloud.update();
+}
+```
+
+One of the main functions in the `loop()` is the `readSensors()` one, here we use the Nicla Sense Env API to read the following variables:
+
+- Temperature (°C)
+- Relative Humidity (%)
+- CO₂ (ppm)
+- Ethanol (ppm)
+- TVOC (mg/m3)
+- Relative Air Quality (IAQ)
+
+We also control the Modulino Pixels color based on the IAQ and update the cloud variables.
+
+The `getPeopleCount()` function creates an I2C request asking for the people detected by the Nicla Vision.
+
 ### Nicla Vision Code
 
 ### Arduino Cloud Dashboard
@@ -139,7 +267,7 @@ The complete improved example sketch can be downloaded [here]().
 
 The Arduino Cloud allows us to create a dashboard with professional real-time Human-Computer Interaction (HCI) elements, as seen in the following animation shows an active outdoor air quality monitor. **The animation has been sped up for illustrative purposes**.
 
-![AQI scale ranges and health advice]()
+
 
 ## Conclusions