Update SonatMote example
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LowPowerLab
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// Sample RFM69 sender/node sketch for the SonarMote - Distance tracker
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// Can be used for inventory control - ex to measure distance in a multi lane cigarette pack rack
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// More info/photos at: http://lowpowerlab.com/sonar
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// http://lowpowerlab.com/sonarmote
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// Ultrasonic sensor (HC-SR04) connected to D6 (Trig), D7 (Echo), and power enabled through D5
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// This sketch sleeps the Moteino and sensor most of the time. It wakes up every few seconds to take
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// a distance reading. If it detects an approaching object (car) it increases the sampling rate
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@ -14,6 +14,7 @@
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// If desired this value could be saved to EEPROM to persist if unit is turned off
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// Get the RFM69 at: https://github.com/LowPowerLab/
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// Make sure you adjust the settings in the configuration section below !!!
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// **********************************************************************************
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// Copyright Felix Rusu, LowPowerLab.com
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// Library and code by Felix Rusu - felix@lowpowerlab.com
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@ -44,27 +45,25 @@
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// **********************************************************************************
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#include <SPI.h>
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#include <RFM69.h> //get it here: https://www.github.com/lowpowerlab/rfm69
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#include <SPIFlash.h> //get it here: https://github.com/LowPowerLab/SPIFlash
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#include <LowPower.h> //get library from: https://github.com/lowpowerlab/lowpower
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//writeup here: http://www.rocketscream.com/blog/2011/07/04/lightweight-low-power-arduino-library/
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//*********************************************************************************************
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//************ IMPORTANT SETTINGS - YOU MUST CHANGE/ONFIGURE TO FIT YOUR HARDWARE *************
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//************ IMPORTANT SETTINGS - YOU MUST CHANGE/CONFIGURE TO FIT YOUR HARDWARE *************
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//*********************************************************************************************
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#define NODEID 22 //unique for each node on same network
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#define NETWORKID 100 //the same on all nodes that talk to each other
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#define GATEWAYID 1
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//Match frequency to the hardware version of the radio on your Moteino (uncomment one):
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//#define FREQUENCY RF69_433MHZ
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//#define FREQUENCY RF69_868MHZ
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#define FREQUENCY RF69_915MHZ
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#define IS_RFM69HW //uncomment only for RFM69HW! Remove/comment if you have RFM69W!
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#define NODEID 22 //unique for each node on same network
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#define GATEWAYID 1 //node Id of the receiver we are sending data to
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#define NETWORKID 100 //the same on all nodes that talk to each other including this node and the gateway
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#define FREQUENCY RF69_915MHZ //others: RF69_433MHZ, RF69_868MHZ (this must match the RFM69 freq you have on your Moteino)
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define IS_RFM69HW //uncomment only for RFM69HW! Remove/comment if you have RFM69W!
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#define ENCRYPTKEY "sampleEncryptKey" //exactly the same 16 characters/bytes on all nodes!
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#define SENDLOOPS 80 //default:80 //if no message was sent for this many sleep loops/cycles, then force a send
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#define READ_SAMPLES 3
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#define HISTERESIS 1.3 //(cm) only send a message when new reading is this many centimeters different
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#define DIST_READ_LOOPS 2 //read distance every this many sleeping loops (ie if sleep time is 8s then 2 loops => a read occurs every 16s)
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//*********************************************************************************************
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//#define BUZZER_ENABLE //uncomment this line if you have the BUZZER soldered and want the sketch to make sounds
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#define SERIAL_EN //uncomment if you want serial debugging output
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#define BUZZER_ENABLE //uncomment this line if you have the BUZZER soldered and want the sketch to make sounds
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//#define SERIAL_EN //uncomment if you want serial debugging output
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//*********************************************************************************************
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#define SLEEP_FASTEST SLEEP_15MS
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#define SLEEP_FAST SLEEP_250MS
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@ -89,7 +88,6 @@ period_t sleepTime = SLEEP_LONGEST; //period_t is an enum type defined in the Lo
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#define MIN_DISTANCE 2 // minimum valid distance
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#define MAX_ADJUST_DISTANCE (MAX_DISTANCE-GRN_LIMIT_UPPER) //this is the amount by which the RED_LIMIT_UPPER can by increased
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//
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#ifdef SERIAL_EN
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#define SERIAL_BAUD 115200
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#define DEBUG(input) {Serial.print(input);}
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@ -102,21 +100,21 @@ period_t sleepTime = SLEEP_LONGEST; //period_t is an enum type defined in the Lo
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#endif
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#define BATT_MONITOR A7 // Sense VBAT_COND signal (when powered externally should read ~3.25v/3.3v (1000-1023), when external power is cutoff it should start reading around 2.85v/3.3v * 1023 ~= 883 (ratio given by 10k+4.7K divider from VBAT_COND = 1.47 multiplier)
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#define BATT_CYCLES SENDLOOPS // 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
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#define BATT_READ_LOOPS SENDLOOPS // 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
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#define BATT_FORMULA(reading) reading * 0.00322 * 1.475 // >>> fine tune this parameter to match your voltage when fully charged
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#define BATT_LOW 3.3
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#define BATT_LOW 3.55
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byte sendLen;
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byte sendLoops=SENDLOOPS;
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byte sendLoops=0;
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byte distReadLoops=0;
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byte battReadLoops=0;
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float distance=0;
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float prevDistance=0;
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float batteryVolts = 5;
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char buff[50]; //this is just an empty string used as a buffer to place the payload for the radio
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char* BATstr="BAT:5.00v"; //longest battery voltage reading message = 9chars
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char* DISTstr="99999.99cm"; //longest distance reading message = 5chars
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void checkBattery(byte samples=10); //take 10 samples by default
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float readDistance(byte samples=1); //take 1 samples by default
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SPIFlash flash(FLASH_SS, 0xEF30); //EF30 for 4mbit Windbond chip (W25X40CL)
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float readDistance(byte samples=1); //take 1 samples by default
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RFM69 radio;
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void setup() {
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@ -135,7 +133,6 @@ void setup() {
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for (byte i=0;i<strlen(ENCRYPTKEY);i++) DEBUG(ENCRYPTKEY[i]);
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DEBUGln();
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radio.sleep();
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if (flash.initialize()) flash.sleep();
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pinMode(TRIG, OUTPUT);
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pinMode(ECHO, INPUT);
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@ -146,22 +143,37 @@ void setup() {
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buzzer(50,2,100);
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#endif
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radio.sendWithRetry(GATEWAYID, "START", 5);
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SERIALFLUSH();
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readDistance(); //first reading seems to always be low
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readBattery();
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}
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void loop() {
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checkBattery();
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distance = readDistance(READ_SAMPLES);
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if (battReadLoops--<=0) //only read battery every BATT_READ_LOOPS cycles
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{
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readBattery();
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battReadLoops = BATT_READ_LOOPS-1;
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}
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if (distReadLoops--<=0)
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{
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distance = readDistance(READ_SAMPLES);
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distReadLoops = DIST_READ_LOOPS-1;
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}
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float diff = distance - prevDistance;
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if ((diff > 1 || diff < -1) || (--sendLoops==0)) //only send a new message if the distance has changed by at least 1cm
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if ((diff > HISTERESIS || diff < -HISTERESIS) || (sendLoops--<=0)) //only send a new message if the distance has changed more than the HISTERESIS or if sendloops has expired
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{
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if (distance > MAX_DISTANCE || distance < MIN_DISTANCE)
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DISTstr = "0"; // zero, out of range
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else dtostrf(distance,3,2, DISTstr);
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sprintf(buff, "%scm BAT:%s", DISTstr, BATstr);
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if (diff > HISTERESIS || diff < -HISTERESIS)
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sprintf(buff, "%scm BAT:%s", DISTstr, BATstr); //send both distance and battery readings
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else
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sprintf(buff, "BAT:%s", BATstr); //distance has not changed significantly so only send last battery reading
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sendLen = strlen(buff);
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digitalWrite(LED, HIGH);
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@ -174,20 +186,11 @@ void loop() {
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}
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else DEBUGln(" - ACK:NOK...");
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digitalWrite(LED, LOW);
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sendLoops = SENDLOOPS; //reset loop counter
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sendLoops = SENDLOOPS-1; //reset send loop counter
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}
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radio.sleep();
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SERIALFLUSH();
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// if (radio.sendWithRetry(1, "123 TEST", 8))
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// {
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// //prevDistance = distance;
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// DEBUG(" - ACK:OK! RSSI:");
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// DEBUGln(radio.RSSI);
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// }
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// else DEBUGln(" - ACK:NOK...");
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// SERIALFLUSH();
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LowPower.powerDown(sleepTime, ADC_OFF, BOD_OFF); //put microcontroller to sleep to save battery life
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}
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@ -222,19 +225,14 @@ long PING()
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return pulseIn(ECHO, HIGH);
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}
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byte cycleCount=BATT_CYCLES;
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void checkBattery(byte samples)
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void readBattery()
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{
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if (cycleCount++ == BATT_CYCLES) //only read battery every BATT_CYCLES sleep cycles
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{
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unsigned int readings=0;
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for (byte i=0; i<samples; i++) //take 10 samples, and average
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readings+=analogRead(BATT_MONITOR);
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batteryVolts = BATT_FORMULA(readings / 10.0);
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dtostrf(batteryVolts,3,2, BATstr); //update the BATStr which gets sent every BATT_CYCLES or along with the MOTION message
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if (batteryVolts <= BATT_LOW) BATstr = "LOW";
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cycleCount = 0;
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}
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unsigned int readings=0;
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for (byte i=0; i<5; i++) //take several samples, and average
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readings+=analogRead(BATT_MONITOR);
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batteryVolts = BATT_FORMULA(readings / 5.0);
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dtostrf(batteryVolts,3,2, BATstr); //update the BATStr which gets sent every BATT_CYCLES or along with the MOTION message
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if (batteryVolts <= BATT_LOW) BATstr = "LOW";
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}
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float microsecondsToInches(long microseconds)
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@ -274,4 +272,4 @@ void Blink(byte pin)
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digitalWrite(pin, HIGH);
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delay(2);
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digitalWrite(pin, LOW);
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}
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}
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