Uno_Dragino_LoRa_GPS_Shield_TTN.ino File Reference

Send GPS and Sensor Data as valid LoRaWAN packet to TTN. More...

#include <lmic.h>
#include <hal/hal.h>
#include <SoftwareSerial.h>
#include <TinyGPS.h>

Functions
SoftwareSerial	ss (A2, A1)
void	os_getArtEui (u1_t *buf)
void	os_getDevEui (u1_t *buf)
void	os_getDevKey (u1_t *buf)
void	do_send (osjob_t *j)
void	onEvent (ev_t ev)
void	GPSRead ()
void	GPSPrint ()
void	setup ()
void	loop ()
float	readVcc ()
float	readTemp (void)

Variables
const unsigned	TX_INTERVAL = 20
unsigned int	count = 1
TinyGPS	gps
float	flat
float	flon
float	falt
float	payload [5]
const lmic_pinmap	lmic_pins

Detailed Description

Send GPS and Sensor Data as valid LoRaWAN packet to TTN.

Author

drtrigon

Date

2018-07-25

Version

1.0

• first version derived from

See Also

https://github.com/goodcheney/Arduino-Profile-Examples/blob/patch-4/libraries/Dragino/examples/LoRa/LoRaWAN/LoRa_GPS_Shield_TTN

https://github.com/dragino/Arduino-Profile-Examples/blob/master/libraries/Dragino/examples/LoRa/LoRaWAN/Arduino_LMIC/Arduino_LMIC.ino

https://github.com/dragino/Arduino-Profile-Examples/blob/master/libraries/Dragino/examples/GPS/tinygps_example/tinygps_example.ino

http://wiki.dragino.com/index.php?title=Connect_to_TTN#Create_LoRa_end_devices

This example sends a valid LoRaWAN packet with binary payload, using frequency and encryption settings matching those of the (early prototype version of) The Things Network.

Note: LoRaWAN per sub-band duty-cycle limitation is enforced (1% in g1, 0.1% in g2).

See Also

https://www.thethingsnetwork.org/docs/lorawan/duty-cycle.html

Change NWKSKEY, APPSKEY and DEVADDR to the keys given for your account and device. Currently it is defined for

See Also

https://console.thethingsnetwork.org/applications/vitudurum-drtrigon/devices/test_01

In order to retreive the data from TTN use the python script given Uno_Dragino_LoRa_GPS_Shield_TTN/request-data-ttn-restful.py

Data from TTN can be further processed in Node-RED. If a local install is not available consider using it online e.g. https://fred.sensetecnic.com/ and enable/install TTN library from menu. Currently I am not aware of any online grafana (or similar) tool.

Do not forget to define the radio type correctly in config.h. Currently set for Dragino LoRa GPS Shield.

Required Libraries:

• LMIC (LoRaWAN): https://github.com/matthijskooijman/arduino-lmic (select "Version 1.5.0+arduino-2" otherwise sketch won't fit into 32K)
• TinyGPS: http://arduiniana.org/libraries/tinygps/

Required Hardware:

• LoRa Shield + Arduino
• LoRa GPS Shield + Arduino

  See Also

  https://github.com/dragino/Lora/blob/master/Lora%20GPS%20Shield/mother%20board/v1.3/Lora%20GPS%20Shield%20v1.3.sch.pdf

• LoRa Mini etc.

Hardware Connection:

• Arduino UNO + LoRa GPS Shield (if use another shield, remove GPS parts)
• Wire GPS_RXD to Arduino A1 (SoftwareSerial TX is analog pin A1 - connect to RX of other device; GPS_RXD = RXD1)
• Wire GPS_TXD to Arduino A2 (SoftwareSerial RX is analog pin A2 - connect to TX of other device; GPS_TXD = TXD1)
• Remove jumper in GPS_RXD/GPX_TXD 1x3 pin header a photo for hardware configuration is here: http://wiki.dragino.com/index.php?title=File:GPSshiwu.png

Thanks to: Thomas Telkamp - 2015 Matthijs Kooijman - 2015 Edwin Chen - modified 21 Mar 2017 suppo.nosp@m.rt@d.nosp@m.ragin.nosp@m.o.co.nosp@m.m Dragino Technology Co., Limited

Function Documentation

void do_send

(

osjob_t *

j

)

void GPSPrint

(

)

void GPSRead

(

)

void loop

(

void

)

OneWirePJON device status update function.

Returns

(void)

void onEvent

(

ev_t

ev

)

void os_getArtEui

(

u1_t *

buf

)

void os_getDevEui

(

u1_t *

buf

)

void os_getDevKey

(

u1_t *

buf

)

float readTemp

(

void

)

Internal Temperature Sensor for ATmega328 types.

Parameters

void

See Also

receiver_function()

https://playground.arduino.cc/Main/InternalTemperatureSensor

Returns

The chip temperature in [°C]

float readVcc

(

)

Accessing the secret voltmeter on the Arduino 168 or 328.

See Also

receiver_function()

http://code.google.com/p/tinkerit/wiki/SecretVoltmeter

Returns

The supply voltage in [V]

void setup

(

void

)

Arduino IDE: put your setup code here, to run once.

SoftwareSerial ss	(	A2	,
		A1
	)

Variable Documentation

unsigned int count = 1

float falt

float flat

float flon

TinyGPS gps

const lmic_pinmap lmic_pins

Initial value:

= {
    .nss = 10,
    .rxtx = LMIC_UNUSED_PIN,
    .rst = 9,
    .dio = {2, 6, 7},
}

float payload[5]

const unsigned TX_INTERVAL = 20