Added example for BH1750 lux sensor

2014-03-02 18:07:40 +01:00
parent 1d6ebad67e
commit 1cb1143c94
6 changed files with 362 additions and 0 deletions
@@ -0,0 +1,71 @@
+/*
+  Vera Arduino BH1750FVI Light sensor
+  communicate using I2C Protocol
+  this library enable 2 slave device addresses
+  Main address  0x23
+  secondary address 0x5C
+  connect the sensor as follows :
+
+  VCC  >>> 5V
+  Gnd  >>> Gnd
+  ADDR >>> NC or GND  
+  SCL  >>> A5
+  SDA  >>> A4
+  
+  Contribution: idefix
+ 
+*/
+
+
+#include <Sleep_n0m1.h>
+#include <SPI.h>
+#include <RF24.h>
+#include <EEPROM.h>  
+#include <Sensor.h>  
+#include <BH1750.h>
+#include <Wire.h> 
+
+// Set RADIO_ID to something unique in your sensor network (1-254)
+// or set to AUTO if you want gw to assign a RADIO_ID for you.
+#define RADIO_ID AUTO
+#define CHILD_ID_LIGHT 0
+#define LIGHT_SENSOR_ANALOG_PIN 0
+
+BH1750  lightSensor;
+
+unsigned long SLEEP_TIME = 30; // Sleep time between reads (in seconds)
+
+Sensor gw(9,10);
+
+int lastlux;
+Sleep sleep;
+
+void setup()  
+{ 
+  Serial.begin(BAUD_RATE);  // Used to type in characters
+  gw.begin(RADIO_ID);
+
+  // Register all sensors to gateway (they will be created as child devices)
+  gw.sendSensorPresentation(CHILD_ID_LIGHT, S_LIGHT_LEVEL);
+  
+  lightSensor.begin();
+}
+
+void loop()      
+{     
+  gw.powerUp(); // Power up radio
+
+  uint16_t lux = lightSensor.readLightLevel();// Get Lux value
+  Serial.println(lux);
+  if (lux != lastlux) {
+      gw.sendVariable(CHILD_ID_LIGHT, V_LIGHT_LEVEL, lux);
+      lastlux = lux;
+  }
+  
+  // Power down the radio.  Note that the radio will get powered back up
+  // on the next write() call.
+  delay(1000); //delay to allow serial to fully print before sleep
+  gw.powerDown();
+  sleep.pwrDownMode(); //set sleep mode
+  sleep.sleepDelay(SLEEP_TIME * 1000); //sleep for: sleepTime 
+}