Hi guys,
I have a battery-powered moteino with the RFM96 radio and a WeatherShield attached for environment measurements (and for hardware simplicity). I am powering everything from 3 1.5 V AA cells in series.
The node sleeps for 900000 seconds after reading the various sensor measurements from the board (temperature, humidity, pressure, and battery level). I set the node up last night and it lasted for around seven hours before the battery ran out. Apparently it appears not to be sleeping as it should. What am I doing wrong? Sketch is included below.
// Enable debug prints to serial monitor
#define MY_DEBUG
// Enable and select radio type attached
#define MY_RADIO_RFM69
#define MY_IS_RFM69HW
#define MY_RFM69_FREQUENCY RF69_868MHZ
#include <SPI.h>
#include <MySensors.h>
#include <DHT.h>
#include <SFE_BMP180.h> //get it here: https://github.com/LowPowerLab/SFE_BMP180
#include <SI7021.h> //get it here: https://github.com/LowPowerLab/SI7021
#include <Wire.h>
#define REPORT_INTERVAL 900000
#define ALTITUDE 220
#define CHILD_TEMPERATURE 1
#define CHILD_HUMIDITY 2
#define CHILD_PRESSURE 3
#define CHILD_POWER 4
SI7021 sensor;
SFE_BMP180 pressure;
int BATTERY_SENSE_PIN = A7; // select the input pin for the battery sense point
char *weather[] = {"stable", "sunny", "cloudy", "unstable", "thunderstorm", "unknown"};
int minutes;
float pressureSamples[180];
int minuteCount = 0;
bool firstRound = true;
float pressureAvg[7];
float dP_dt;
MyMessage temperatureMessage(CHILD_TEMPERATURE, V_TEMP);
MyMessage humidityMessage(CHILD_HUMIDITY, V_HUM);
MyMessage pressureMessage(CHILD_PRESSURE, V_PRESSURE);
MyMessage forecastMsg(CHILD_PRESSURE, V_FORECAST);
MyMessage powerMessage(CHILD_POWER, V_VOLTAGE);
bool changed = false;
float lastPressure = -1;
float lastTemperature = -1;
float lastHumidity = -1;
int lastForecast = -1;
float lastBattery = -1;
void setup()
{
// use the 1.1 V internal reference
#if defined(__AVR_ATmega2560__)
analogReference(INTERNAL1V1);
#else
analogReference(INTERNAL);
#endif
sensor.begin();
if (pressure.begin())
Serial.println("BMP180 init success");
else
{
// Oops, something went wrong, this is usually a connection problem,
// see the comments at the top of this sketch for the proper connections.
Serial.println("BMP180 init fail\n\n");
//while(1); // Pause forever.
}
}
void presentation() {
// Send the sketch version information to the gateway and Controller
sendSketchInfo("Outdoors environment", "2.0");
// Register all sensors to gateway (they will be created as child devices)
present(CHILD_TEMPERATURE, S_TEMP);
delay(250);
present(CHILD_HUMIDITY, S_HUM);
delay(250);
present(CHILD_PRESSURE, S_BARO);
delay(250);
present(CHILD_POWER, S_POWER);
}
void loop()
{
changed = false;
float temperature = sensor.getCelsiusHundredths() / 100;
int humidity = sensor.getHumidityPercent();
if (lastTemperature != temperature) {
changed = true;
lastTemperature = temperature;
}
if (lastHumidity != humidity) {
changed = true;
lastHumidity = humidity;
}
pinMode(A3, OUTPUT);
digitalWrite(A3, LOW);
lastBattery = analogRead(A7) / 10;
pinMode(A3, INPUT);
#ifdef MY_DEBUG
float batteryV = lastBattery * 0.003363075 * 10;
Serial.print("Battery Voltage: ");
Serial.print(batteryV);
Serial.println(" V");
Serial.print("Battery percent: ");
Serial.print(lastBattery);
Serial.println(" %");
#endif
char status;
double T, P, p0, a;
status = pressure.startTemperature();
if (status != 0)
{
// Wait for the measurement to complete:
delay(status);
// Retrieve the completed temperature measurement:
// Note that the measurement is stored in the variable T.
// Function returns 1 if successful, 0 if failure.
status = pressure.getTemperature(T);
if (status != 0) {
status = pressure.startPressure(3);
if (status != 0)
{
delay(status);
status = pressure.getPressure(P, T);
if (status != 0)
{
p0 = pressure.sealevel(P, ALTITUDE); // we're at 1655 meters (Boulder, CO)
int forecast = 5;//sample(p0);
if (lastPressure != p0) {
changed = true;
lastPressure = p0;
Serial.print("relative (sea-level) pressure: ");
Serial.print(p0, 2);
Serial.print(" mb, ");
}
if (lastForecast != forecast) {
changed = true;
lastForecast = forecast;
}
}
else Serial.println("error retrieving pressure measurement\n");
}
else Serial.println("error starting pressure measurement\n");
}
else Serial.println("error retrieving temperature measurement\n");
}
else Serial.println("error starting temperature measurement\n");
if (changed) {
send(temperatureMessage.set(lastTemperature, 1));
send(pressureMessage.set(lastPressure, 1));
send(humidityMessage.set(lastHumidity, 1));
sendBatteryLevel( lastBattery);
if (lastForecast > -1)
send(forecastMsg.set(weather[lastForecast]));
}
sleep(REPORT_INTERVAL);
}
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