Hello
I rephrase my message taking into account the comments I received
My goal: realization of a tracker to monitor a hive using the SigFox network
This tracker must be energy efficient and only send its position if it is moving
standby time should be more than 1 year
My gear:
1 MKRFOX1200 card
1 lish3d accellerometer (adafruit)
1 neo6m gps
1 mosfet to manage the GPS power supply
1 LIFEPO 3.2v battery
My code :
#include <TinyGPS++.h>
#define gpsSerial Serial1
char data;
float latitude;
float longitude;
uint8_t alt; //altitude
uint8_t vitesse;
uint8_t nbre_sat;
TinyGPSPlus gps;
#include <Wire.h>
#include <SPI.h>
#include <Adafruit_LIS3DH.h>
#include <Adafruit_Sensor.h>
#include <ArduinoLowPower.h>
#include <SigFox.h>
// Used for software SPI
#define SLEEPTIME 10 * 60 * 1000 // Set the delay to 1440 minutes (1440 min x 60 seconds x 1000 milliseconds)
#define LIS3DH_CLK 9
#define LIS3DH_MISO 10
#define LIS3DH_MOSI 11
// Used for hardware & software SPI
#define LIS3DH_CS 8
Adafruit_LIS3DH lis = Adafruit_LIS3DH();
#define CLICKTHRESHHOLD 80
void setup() {
pinMode(5, OUTPUT);//alim neo6m
//Initialize serial and wait for port to open:
Serial1.begin(9600);
Serial.begin(9600);
// LowPower.attachInterruptWakeup(RTC_ALARM_WAKEUP, dummy, CHANGE);
#ifndef ESP8266
while (!Serial) yield(); // will pause Zero, Leonardo, etc until serial console opens
#endif
Serial.begin(9600);
Serial.println("Adafruit LIS3DH Tap Test!");
if (! lis.begin(0x18))
{ // change this to 0x19 for alternative i2c address
Serial.println("Couldnt start");
while (1) yield();
}
Serial.println("LIS3DH found!");
lis.setRange(LIS3DH_RANGE_2_G); // 2, 4, 8 or 16 G!
Serial.print("Range = "); Serial.print(2 << lis.getRange());
Serial.println("G");
// 0 = turn off click detection & interrupt
// 1 = single click only interrupt output
// 2 = double click only interrupt output, detect single click
// Adjust threshhold, higher numbers are less sensitive
lis.setClick(2, CLICKTHRESHHOLD);
delay(100);
SigFox.begin();
SigFox.reset();
delay(100);
SigFox.debug();
delay(3000);
}
typedef struct __attribute__((packed)) sigFox_Message
{
float longitude;
float latitude;
int8_t vitesse;
uint8_t nbre_sat;
}
SigFoxMessage ;
SigFoxMessage msg;
void loop()
{
uint8_t click = lis.getClick();
if (click == 0) return;
if (! (click & 0x30)) return;
Serial.print("Click detected (0x"); Serial.print(click, HEX); Serial.print("): ");
if (click & 0x10) Serial.print(" single click");
if (click & 0x20) Serial.print(" double click");
Serial.println();
if (click & 0x10)
{
digitalWrite(5, HIGH);//gate transistor pour alim GPS
Serial.begin(9600);
Serial1.begin(9600);
delay(30000);//delai pour init gps
while (Serial1.available())
{
data = Serial1.read();
// Serial.print(data);
gps.encode(data);
latitude = gps.location.lat();
longitude = gps.location.lng();
alt = gps.altitude.meters();
vitesse = gps.speed.kmph();
nbre_sat = gps.satellites.value();
Serial1.println("-------- FIX GPS ------------");
Serial.print("LATITUDE="); Serial.println(latitude,4);
Serial.print("LONGITUDE="); Serial.println(longitude,4);
Serial.print("ALTITUDE (m) ="); Serial.println(alt);
Serial.print("VITESSE (km/h)="); Serial.println(vitesse);
Serial.print("NOMBRE SATTELLITES="); Serial.println(nbre_sat);
SigFox.begin();
SigFox.reset();
delay(100);
SigFox.debug();
delay(2000);
msg.longitude = (float)longitude;
msg.latitude = (float)latitude;
msg.vitesse = (uint8_t)vitesse;
msg.nbre_sat = (uint8_t)nbre_sat;
SigFox.beginPacket();
SigFox.write((uint8_t*)&msg,sizeof(msg));
SigFox.endPacket(false);
SigFox.end();
delay(100);
digitalWrite(5, LOW);
return;
//Sleep for 3 minutes:180000 for 11minutes: 660000
delay(20000);
//LowPower.sleep(660000);
// LowPower.deepSleep(uint32_t(SLEEPTIME));
}
}
}
// void dummy() {
// This function will be called once on device wakeup
// You can do some little operations here (like changing variables which will be used in the loop)
// Remember to avoid calling delay() and long running functions since this functions executes in interrupt context
//}
The problem: I can't send the variable value latitude, longitude, speed and number of sat
I tested the GPS alone: it works
I tested the accelerometer alone and it also works
The MKRFOX 1200 card does send longitude, latitude, speed and number of satellites variables but their value is always equal to 0.000
I have the impression that in my program there is a conflict which prevents updating the GPS variables but I cannot solve this problem
I hope I was clearer than in my first message and hope that you can bring me a solution
Cordially
Pierre-Yves SEGOT