rtc project add power features

sleep/sleep.ino

@@ -1,4 +1,8 @@
+#include <SD.h>
+
 #include <SPI.h>
+#include <DHT.h>
+#include <DS3231.h>
 #include <avr/sleep.h>
 #include <avr/power.h>
 #include <avr/wdt.h>
@@ -12,6 +16,14 @@
 // watchdog timer configuration.
 #define MAX_SLEEP_ITERATIONS   LOGGING_FREQ_SECONDS / 8
 
+#define DHTPIN 2
+#define DHTTYPE DHT22
+const int chipSelect = 4;
+
+//real time clock ds3231
+DS3231  rtc(SDA, SCL);
+DHT dht(DHTPIN, DHTTYPE);
+
 int sleepIterations = 0;
 volatile bool watchdogActivated = false;
 
@@ -84,9 +96,69 @@ void setup_interrupts(void) {
 }
 
 void setup(void) {
-  Serial.begin(9600);
-  setup_interrupts();
   pinMode(LED_BUILTIN, OUTPUT);
+  dht.begin();
+  rtc.begin();
+  Serial.begin(9600);
+      while (!Serial) { }
+
+   Serial.print("Initializing SD card...");
+
+    if (!SD.begin(chipSelect)) {
+        Serial.println("Card failed, or not present");
+        while (1);
+    }
+    Serial.println("card initialized.");
+  setup_interrupts();
+
+}
+
+void visualize(float h, float t, String data) {
+
+    Serial.print("Hezetasuna:");
+    Serial.print(h);
+    Serial.println("");
+
+    Serial.print("Tenperatura:");
+    Serial.print(t);
+    Serial.println("");
+
+    Serial.print("dataString:");
+    Serial.println(data + "\n");
+}
+void getAndWrite(){
+  digitalWrite(LED_BUILTIN, HIGH);
+    float h = dht.readHumidity();
+    float t = dht.readTemperature();
+    double unixTime = rtc.getUnixTime(rtc.getTime());
+
+    if (isnan(t) || isnan(h)){
+        Serial.println("Failed to read from DHT");
+        return;
+    }
+    String dataString = "";
+    dataString = String(h) + ";" + String(t) + ";" + String(unixTime);
+
+    visualize(h, t, dataString);
+    writeSD(dataString);
+    digitalWrite(LED_BUILTIN, LOW);
+  
+}
+
+void writeSD(String dataString) {
+  File dataFile = SD.open("datalog.txt", FILE_WRITE);
+
+  // if the file is available, write to it:
+  if (dataFile) {
+    dataFile.println(dataString);
+    dataFile.close();
+    // print to the serial port too:
+    Serial.println(dataString);
+  }
+  // if the file isn't open, pop up an error:
+  else {
+    Serial.println("error opening datalog.txt");
+  }
 }
 
 void loop(void)
@@ -103,10 +175,8 @@ void loop(void)
       sleepIterations = 0;
       // Log the sensor data (waking the CC3000, etc. as needed)
       /*logSensorReading();*/
-      Serial.println("gimme 5v");
-        digitalWrite(LED_BUILTIN, HIGH);
-        delay(1000);                       // wait for a second
-        digitalWrite(LED_BUILTIN, LOW);
+      getAndWrite();
+  delay(1000);
       }
     }