SpanPoint-Transmitter-AHT10

#include "HomeSpan.h"
#include <Adafruit_AHTX0.h>
#include <Wire.h>

#define AHTPIN 1       // I2C SDA pin (adjust based on your specific board)
#define SLEEP_TIME 20  // Deep sleep time in seconds

// Structure for sensor data - must match receiver's structure
struct sensor_data {
  float temperature;
  float humidity;
  int batteryLevel;
};

// Create AHT10 sensor object
Adafruit_AHTX0 aht;

void setup() {
  // Set CPU to lower frequency to save power
  setCpuFrequencyMhz(80);

  Serial.begin(115200);
  delay(1000);
  Serial.println("\nAHT10 Remote Sensor Starting...");

  // Initialize I2C communication
  Wire.begin(3, 1);  // SDA pin 3, SCL pin 1

  // Check if AHT10 sensor is found
  if (!aht.begin()) {
    Serial.println("Failed to find AHT10 sensor!");
    // Handle sensor initialization failure
    esp_deep_sleep_start();
  }

  // Set device as a Wi-Fi Station
  WiFi.mode(WIFI_STA);

  // Print MAC address for configuration
  Serial.print("Remote Sensor MAC Address: ");
  Serial.println(WiFi.macAddress());

  // Initialize SpanPoint with the receiver's MAC address
  // sendSize=sizeof(sensor_data), recvSize=0, channel=1
  SpanPoint *mainDevice = new SpanPoint("D8:3B:DA:34:B0:90", sizeof(sensor_data), 0, 1);

  // Allow sensor time to stabilize\
  delay(2000);

  // Read sensor data
  sensors_event_t humidity, temp;
  aht.getEvent(&humidity, &temp);

  sensor_data sensorData;
  sensorData.temperature = temp.temperature;
  sensorData.humidity = humidity.relative_humidity;

  // Read battery level (example - adjust for your hardware)
  int batteryRaw = analogRead(A0);
  sensorData.batteryLevel = map(batteryRaw, 0, 4095, 0, 100);

  // Print readings for debugging
  Serial.print("Temperature: ");
  Serial.print(sensorData.temperature);
  Serial.println(" °C");

  Serial.print("Humidity: ");
  Serial.print(sensorData.humidity);
  Serial.println(" %");

  Serial.print("Battery: ");
  Serial.print(sensorData.batteryLevel);
  Serial.println(" %");

  // Check if readings are valid
  if (isnan(sensorData.temperature) || isnan(sensorData.humidity)) {
    Serial.println("Failed to read from AHT10 sensor!");
  } else {
    // Send data to main device
    boolean success = mainDevice->send(&sensorData);
    Serial.print("Send data update: ");
    Serial.println(success ? "Success" : "Failed");

    // Try again if failed the first time
    if (!success) {
      delay(500);
      success = mainDevice->send(&sensorData);
      Serial.print("Second attempt: ");
      Serial.println(success ? "Success" : "Failed");
    }
  }

  // Wait a moment to ensure transmission completes
  delay(200);

  // Go to deep sleep
  Serial.print("Going to deep sleep for ");
  Serial.print(SLEEP_TIME);
  Serial.println(" seconds");
  Serial.flush();
  esp_sleep_enable_timer_wakeup(SLEEP_TIME * 1000000); // Convert to microseconds
  esp_deep_sleep_start();
}

void loop() {
  // This won't run due to deep sleep
}