269 lines
12 KiB
Arduino
269 lines
12 KiB
Arduino
|
// **********************************************************************************************************
|
||
|
|
// WeatherShield sketch that works with Moteinos equipped with RFM69W/RFM69HW and WeatherShield
|
||
|
|
// It sends periodic highly accurate weather readings (temp, hum, atm pressure) from the
|
||
|
|
// WeatherShield to the base node/gateway Moteino
|
||
|
|
// Can be adapted to use Moteinos/Arduinos using RFM12B or other RFM69 variants (RFM69CW, RFM69HCW)
|
||
|
|
// For use with MoteinoMEGA you will have to revisit the pin definitions defined below
|
||
|
|
// http://www.LowPowerLab.com/WeatherShield
|
||
|
|
// Used in this project: http://lowpowerlab.com/blog/2015/07/24/attic-fan-cooling-tests/
|
||
|
|
// 2015-07-23 (C) Felix Rusu of http://www.LowPowerLab.com/
|
||
|
|
// **********************************************************************************************************
|
||
|
|
// License
|
||
|
|
// **********************************************************************************************************
|
||
|
|
// This program is free software; you can redistribute it
|
||
|
|
// and/or modify it under the terms of the GNU General
|
||
|
|
// Public License as published by the Free Software
|
||
|
|
// Foundation; either version 3 of the License, or
|
||
|
|
// (at your option) any later version.
|
||
|
|
//
|
||
|
|
// This program is distributed in the hope that it will
|
||
|
|
// be useful, but WITHOUT ANY WARRANTY; without even the
|
||
|
|
// implied warranty of MERCHANTABILITY or FITNESS FOR A
|
||
|
|
// PARTICULAR PURPOSE. See the GNU General Public
|
||
|
|
// License for more details.
|
||
|
|
//
|
||
|
|
// You should have received a copy of the GNU General
|
||
|
|
// Public License along with this program.
|
||
|
|
// If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
//
|
||
|
|
// Licence can be viewed at
|
||
|
|
// http://www.gnu.org/licenses/gpl-3.0.txt
|
||
|
|
//
|
||
|
|
// Please maintain this license information along with authorship
|
||
|
|
// and copyright notices in any redistribution of this code
|
||
|
|
// ***************************************************************************************************************************
|
||
|
|
#include <RFM69.h> //get it here: http://github.com/lowpowerlab/rfm69
|
||
|
|
#include <SPIFlash.h> //get it here: http://github.com/lowpowerlab/spiflash
|
||
|
|
#include <WirelessHEX69.h> //get it here: https://github.com/LowPowerLab/WirelessProgramming
|
||
|
|
#include <SPI.h> //comes with Arduino
|
||
|
|
|
||
|
|
#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> //comes with Arduino
|
||
|
|
|
||
|
|
#include <LowPower.h> //get library from: https://github.com/lowpowerlab/lowpower
|
||
|
|
//writeup here: http://www.rocketscream.com/blog/2011/07/04/lightweight-low-power-arduino-library/
|
||
|
|
|
||
|
|
//*****************************************************************************************************************************
|
||
|
|
// ADJUST THE SETTINGS BELOW DEPENDING ON YOUR HARDWARE/TRANSCEIVER SETTINGS/REQUIREMENTS
|
||
|
|
//*****************************************************************************************************************************
|
||
|
|
#define GATEWAYID 1
|
||
|
|
#define NODEID 164
|
||
|
|
#define NETWORKID 100
|
||
|
|
//#define FREQUENCY RF69_433MHZ
|
||
|
|
//#define FREQUENCY RF69_868MHZ
|
||
|
|
#define FREQUENCY RF69_915MHZ //Match this with the version of your Moteino! (others: RF69_433MHZ, RF69_868MHZ)
|
||
|
|
#define ENCRYPTKEY "sampleEncryptKey" //has to be same 16 characters/bytes on all nodes, not more not less!
|
||
|
|
//#define IS_RFM69HW //uncomment only for RFM69HW! Leave out if you have RFM69W!
|
||
|
|
#define SEND_LOOPS 15 //send data this many sleep loops (15 loops of 8sec cycles = 120sec ~ 2 minutes)
|
||
|
|
//*********************************************************************************************
|
||
|
|
#define SLEEP_FASTEST SLEEP_15MS
|
||
|
|
#define SLEEP_FAST SLEEP_250MS
|
||
|
|
#define SLEEP_SEC SLEEP_1S
|
||
|
|
#define SLEEP_LONG SLEEP_2S
|
||
|
|
#define SLEEP_LONGER SLEEP_4S
|
||
|
|
#define SLEEP_LONGEST SLEEP_8S
|
||
|
|
period_t sleepTime = SLEEP_LONGEST; //period_t is an enum type defined in the LowPower library (LowPower.h)
|
||
|
|
//*********************************************************************************************
|
||
|
|
#define BATT_MONITOR_EN A3 //enables battery voltage divider to get a reading from a battery, disable it to save power
|
||
|
|
#define BATT_MONITOR A7 //through 1Meg+470Kohm and 0.1uF cap from battery VCC - this ratio divides the voltage to bring it below 3.3V where it is scaled to a readable range
|
||
|
|
#define BATT_CYCLES 2 //read and report battery voltage every this many sleep cycles (ex 30cycles * 8sec sleep = 240sec/4min). For 450 cyclesyou would get ~1 hour intervals
|
||
|
|
#define BATT_FORMULA(reading) reading * 0.00322 * 1.475 // >>> fine tune this parameter to match your voltage when fully charged
|
||
|
|
#define BATT_LOW 3.6 //(volts)
|
||
|
|
#define BATT_READ_LOOPS SEND_LOOPS*10 // read and report battery voltage every this many sleep cycles (ex 30cycles * 8sec sleep = 240sec/4min). For 450 cycles you would get ~1 hour intervals between readings
|
||
|
|
//*****************************************************************************************************************************
|
||
|
|
#define LED 9 //pin connected to onboard LED on regular Moteinos
|
||
|
|
//#define BLINK_EN //uncomment to blink LED on every send
|
||
|
|
#define SERIAL_EN //comment out if you don't want any serial output
|
||
|
|
|
||
|
|
#ifdef SERIAL_EN
|
||
|
|
#define SERIAL_BAUD 115200
|
||
|
|
#define DEBUG(input) {Serial.print(input);}
|
||
|
|
#define DEBUGln(input) {Serial.println(input);}
|
||
|
|
#define SERIALFLUSH() {Serial.flush();}
|
||
|
|
#else
|
||
|
|
#define DEBUG(input);
|
||
|
|
#define DEBUGln(input);
|
||
|
|
#define SERIALFLUSH();
|
||
|
|
#endif
|
||
|
|
//*****************************************************************************************************************************
|
||
|
|
|
||
|
|
//global program variables
|
||
|
|
SI7021 weatherShield_SI7021;
|
||
|
|
SFE_BMP180 weatherShield_BMP180;
|
||
|
|
RFM69 radio;
|
||
|
|
char Pstr[10];
|
||
|
|
char buffer[50];
|
||
|
|
SPIFlash flash(8, 0xEF30); //WINDBOND 4MBIT flash chip on CS pin D8 (default for Moteino)
|
||
|
|
|
||
|
|
void setup(void)
|
||
|
|
{
|
||
|
|
#ifdef SERIAL_EN
|
||
|
|
Serial.begin(SERIAL_BAUD);
|
||
|
|
#endif
|
||
|
|
pinMode(LED, OUTPUT);
|
||
|
|
|
||
|
|
radio.initialize(FREQUENCY,NODEID,NETWORKID);
|
||
|
|
#ifdef IS_RFM69HW
|
||
|
|
radio.setHighPower(); //uncomment only for RFM69HW!
|
||
|
|
#endif
|
||
|
|
radio.encrypt(ENCRYPTKEY);
|
||
|
|
|
||
|
|
sprintf(buffer, "WeatherMote - transmitting at: %d Mhz...", FREQUENCY==RF69_433MHZ ? 433 : FREQUENCY==RF69_868MHZ ? 868 : 915);
|
||
|
|
DEBUGln(buffer);
|
||
|
|
|
||
|
|
//initialize weather shield sensors
|
||
|
|
weatherShield_SI7021.begin();
|
||
|
|
if (weatherShield_BMP180.begin())
|
||
|
|
{ DEBUGln("BMP180 init success"); }
|
||
|
|
else { DEBUGln("BMP180 init fail\n"); }
|
||
|
|
|
||
|
|
radio.sendWithRetry(GATEWAYID, "START", 6);
|
||
|
|
Blink(LED, 100);Blink(LED, 100);Blink(LED, 100);
|
||
|
|
|
||
|
|
SERIALFLUSH();
|
||
|
|
readBattery();
|
||
|
|
}
|
||
|
|
|
||
|
|
unsigned long doorPulseCount = 0;
|
||
|
|
char input=0;
|
||
|
|
double P;
|
||
|
|
byte sendLoops=0;
|
||
|
|
byte battReadLoops=0;
|
||
|
|
float batteryVolts = 5;
|
||
|
|
char* BATstr="BAT:5.00v"; //longest battery voltage reading message = 9chars
|
||
|
|
byte sendLen;
|
||
|
|
|
||
|
|
void loop()
|
||
|
|
{
|
||
|
|
if (battReadLoops--<=0) //only read battery every BATT_READ_LOOPS cycles
|
||
|
|
{
|
||
|
|
readBattery();
|
||
|
|
battReadLoops = BATT_READ_LOOPS-1;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (sendLoops--<=0) //send readings every SEND_LOOPS
|
||
|
|
{
|
||
|
|
sendLoops = SEND_LOOPS-1;
|
||
|
|
P = getPressure();
|
||
|
|
P*=0.0295333727; //transform to inHg
|
||
|
|
dtostrf(P, 3,2, Pstr);
|
||
|
|
sprintf(buffer, "BAT:%sv F:%d H:%d P:%s", BATstr, weatherShield_SI7021.getFahrenheitHundredths(), weatherShield_SI7021.getHumidityPercent(), Pstr);
|
||
|
|
|
||
|
|
sendLen = strlen(buffer);
|
||
|
|
radio.sendWithRetry(GATEWAYID, buffer, sendLen, 1); //retry one time
|
||
|
|
DEBUG(buffer); DEBUG(" (packet length:"); DEBUG(sendLen); DEBUGln(")");
|
||
|
|
|
||
|
|
#ifdef BLINK_EN
|
||
|
|
Blink(LED, 5);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
//When this sketch is on a node where you can afford the power to keep the radio awake all the time
|
||
|
|
// you can make it receive messages and also make it wirelessly programmable
|
||
|
|
// otherwise this section can be removed
|
||
|
|
if (radio.receiveDone())
|
||
|
|
{
|
||
|
|
boolean reportStatusRequest=false;
|
||
|
|
DEBUG('[');DEBUG(radio.SENDERID);DEBUG("] ");
|
||
|
|
for (byte i = 0; i < radio.DATALEN; i++)
|
||
|
|
DEBUG((char)radio.DATA[i]);
|
||
|
|
|
||
|
|
// wireless programming token check - this only works when radio is kept awake to listen for WP tokens
|
||
|
|
CheckForWirelessHEX(radio, flash, true);
|
||
|
|
|
||
|
|
//first send any ACK to request
|
||
|
|
DEBUG(" [RX_RSSI:");DEBUG(radio.RSSI);DEBUG("]");
|
||
|
|
if (radio.ACKRequested())
|
||
|
|
{
|
||
|
|
radio.sendACK();
|
||
|
|
DEBUG(" - ACK sent.");
|
||
|
|
}
|
||
|
|
DEBUGln();
|
||
|
|
}
|
||
|
|
|
||
|
|
SERIALFLUSH();
|
||
|
|
radio.sleep(); //you can comment out this line if you want this node to listen for wireless programming requests
|
||
|
|
LowPower.powerDown(sleepTime, ADC_OFF, BOD_OFF);
|
||
|
|
DEBUGln("WAKEUP");
|
||
|
|
}
|
||
|
|
|
||
|
|
double getPressure()
|
||
|
|
{
|
||
|
|
char status;
|
||
|
|
double T,P,p0,a;
|
||
|
|
// If you want sea-level-compensated pressure, as used in weather reports,
|
||
|
|
// you will need to know the altitude at which your measurements are taken.
|
||
|
|
// We're using a constant called ALTITUDE in this sketch:
|
||
|
|
|
||
|
|
// If you want to measure altitude, and not pressure, you will instead need
|
||
|
|
// to provide a known baseline pressure. This is shown at the end of the sketch.
|
||
|
|
// You must first get a temperature measurement to perform a pressure reading.
|
||
|
|
// Start a temperature measurement:
|
||
|
|
// If request is successful, the number of ms to wait is returned.
|
||
|
|
// If request is unsuccessful, 0 is returned.
|
||
|
|
status = weatherShield_BMP180.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 = weatherShield_BMP180.getTemperature(T);
|
||
|
|
if (status != 0)
|
||
|
|
{
|
||
|
|
// Start a pressure measurement:
|
||
|
|
// The parameter is the oversampling setting, from 0 to 3 (highest res, longest wait).
|
||
|
|
// If request is successful, the number of ms to wait is returned.
|
||
|
|
// If request is unsuccessful, 0 is returned.
|
||
|
|
status = weatherShield_BMP180.startPressure(3);
|
||
|
|
if (status != 0)
|
||
|
|
{
|
||
|
|
// Wait for the measurement to complete:
|
||
|
|
delay(status);
|
||
|
|
|
||
|
|
// Retrieve the completed pressure measurement:
|
||
|
|
// Note that the measurement is stored in the variable P.
|
||
|
|
// Note also that the function requires the previous temperature measurement (T).
|
||
|
|
// (If temperature is stable, you can do one temperature measurement for a number of pressure measurements.)
|
||
|
|
// Function returns 1 if successful, 0 if failure.
|
||
|
|
status = weatherShield_BMP180.getPressure(P,T);
|
||
|
|
if (status != 0)
|
||
|
|
{
|
||
|
|
return P;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void readBattery()
|
||
|
|
{
|
||
|
|
unsigned int readings=0;
|
||
|
|
|
||
|
|
//enable battery monitor on WeatherShield (via mosfet controlled by A3)
|
||
|
|
pinMode(BATT_MONITOR_EN, OUTPUT);
|
||
|
|
digitalWrite(BATT_MONITOR_EN, LOW);
|
||
|
|
|
||
|
|
for (byte i=0; i<5; i++) //take several samples, and average
|
||
|
|
readings+=analogRead(BATT_MONITOR);
|
||
|
|
|
||
|
|
//disable battery monitor
|
||
|
|
pinMode(BATT_MONITOR_EN, INPUT); //highZ mode will allow p-mosfet to be pulled high and disconnect the voltage divider on the weather shield
|
||
|
|
|
||
|
|
batteryVolts = BATT_FORMULA(readings / 5.0);
|
||
|
|
dtostrf(batteryVolts,3,2, BATstr); //update the BATStr which gets sent every BATT_CYCLES or along with the MOTION message
|
||
|
|
if (batteryVolts <= BATT_LOW) BATstr = "LOW";
|
||
|
|
}
|
||
|
|
|
||
|
|
void Blink(byte PIN, byte DELAY_MS)
|
||
|
|
{
|
||
|
|
pinMode(PIN, OUTPUT);
|
||
|
|
digitalWrite(PIN,HIGH);
|
||
|
|
delay(DELAY_MS/2);
|
||
|
|
digitalWrite(PIN,LOW);
|
||
|
|
delay(DELAY_MS/2);
|
||
|
|
}
|