LoRaWAN-demo-NAMote72 - NAMote72 application example using LoRaWAN-lib MA…

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NAMote72 application example using LoRaWAN-lib MAC layer implementation

Dependencies: LoRaWAN-lib SX1272Lib lib_gps lib_mpl3115a2 mbed

LoRaWAN-demo is a ClassA device example project using LoRaWAN-lib and SX1272Lib libraries.

This demo application sends a frame every 4 to 6 seconds (randomly) and displays its current status using a serial port as display(VT100).

The serial port settings are as shown in below image. To access the serial port settings please click on "Setup" menu and then "Serial port..."

/media/uploads/mluis/serial_port_settings.png

The terminal window should be setup as shown in below image. To access the terminal window settings please click on "Setup" menu and then "Terminal..."

/media/uploads/mluis/terminal_window_settings.png

The image below shows the VT100 application status.

Application main screen

The application gives the possibility to either activate the device using

Over The Air Activation (OTAA)
Personalization activation (PA)

The activation mode can be adjusted in Comissioning.h by changing the following parameter:

/*!
 * When set to 1 the application uses the Over-the-Air activation procedure
 * When set to 0 the application uses the Personalization activation procedure
 */
#define OVER_THE_AIR_ACTIVATION                     1

The application gives the possibility to select which kind of network we are connecting to.

Public Network (true)
Private Network (false)

The netork type can be changed as follows:

/*!
 * Indicates if the end-device is to be connected to a private or public network
 */
#define LORAWAN_PUBLIC_NETWORK                      true

OTAA
When OTAA is selected the user must porvide a device EUI, an application EUI and an application key.
These can be adjusted by changing the following parameters:

/*!
 * Mote device IEEE EUI (big endian)
 *
 * \remark In this application the value is automatically generated by calling
 *         BoardGetUniqueId function
 */
#define LORAWAN_DEVICE_EUI                          { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }

/*!
 * Application IEEE EUI (big endian)
 */
#define LORAWAN_APPLICATION_EUI                     { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }

/*!
 * AES encryption/decryption cipher application key
 */
#define LORAWAN_APPLICATION_KEY                     { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6, 0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C }

PA
When PA is selected the user must porvide a network ID, a device address, a network session key and an application session key.
These can be adjusted by changing the following parameters:

/*!
 * Current network ID
 */
#define LORAWAN_NETWORK_ID                          ( uint32_t )0

/*!
 * Device address on the network (big endian)
 *
 * \remark In this application the value is automatically generated using
 *         a pseudo random generator seeded with a value derived from
 *         BoardUniqueId value
 */
#define LORAWAN_DEVICE_ADDRESS                      ( uint32_t )0x00000000

/*!
 * AES encryption/decryption cipher network session key
 */
#define LORAWAN_NWKSKEY                             { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6, 0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C }

/*!
 * AES encryption/decryption cipher application session key
 */
#define LORAWAN_APPSKEY                             { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6, 0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C }

On top of main.c the user has the possibility to tweak some application settings such as:

Join requests transmission frequency
Frames transmission frequency
Application default datarate
Confirmed or Unconfirmed frames transmission
ADR (Adaptive Datarate) ON/OFF
Application port to be used by the transmitted frames

The join requests transmission frequency can be adjusted by changing the follwoing parameter:

/*!
 * Join requests trials duty cycle.
 */
#define OVER_THE_AIR_ACTIVATION_DUTYCYCLE           10000000  // 10 [s] value in us

The frame transmission frequency can be adjusted by changing the follwoing parameters:

/*!
 * Defines the application data transmission duty cycle. 5s, value in [us].
 */
#define APP_TX_DUTYCYCLE                            5000000

/*!
 * Defines a random delay for application data transmission duty cycle. 1s,
 * value in [us].
 */
#define APP_TX_DUTYCYCLE_RND                        1000000

The frame transmission scheduling is then executed as follows:

        if( ScheduleNextTx == true )
        {
            ScheduleNextTx = false;
            // Schedule next packet transmission
            TxDutyCycleTime = APP_TX_DUTYCYCLE + randr( -APP_TX_DUTYCYCLE_RND, APP_TX_DUTYCYCLE_RND );
            TimerSetValue( &TxNextPacketTimer, TxDutyCycleTime );
            TimerStart( &TxNextPacketTimer );
        }

The application default datarate can be adjusted by changing the following parameter:

Quote:

When ADR is off this setting is the fixed datarate that will be used by the application.
When ADR is on this setting is the initial datarate used by the application.

/*!
 * Default mote datarate
 */
#define LORAWAN_DEFAULT_DATARATE                    DR_0

The transmitted frame contents will depend on LORAWAN_CONFIRMED_MSG_ON value.

/*!
 * LoRaWAN confirmed messages
 */
#define LORAWAN_CONFIRMED_MSG_ON                    true

If LORAWAN_CONFIRMED_MSG_ON equals false then the application payload is one byte corresponding to the AppLed state.
If LORAWAN_CONFIRMED_MSG_ON equals true then the application payload is six bytes corresponding to the AppLed state, Downlink counter (unsigned 16 bits), received RSSI (signed 16 bits) and received SNR (signed 8 bits).

/*!
 * \brief   Prepares the payload of the frame
 */
static void PrepareTxFrame( uint8_t port )
{
...
    switch( port )
    {
    case 5:
        {
            Gps.service( );
            Mpl3115a2.ReadTemperature( );
            AppData[0] = AppLedStateOn;                        // (bit 0 == 1) => LED on
            AppData[1] = ( int32_t )Mpl3115a2.Temperature;     // Signed degrees Celcius in half degree units. So, +/-63 °C
            AppData[2] = BoardGetBatteryLevel( );              // Per LoRaWAN spec; 0 = Charging; 1...254 = level, 255 = N/A
            AppData[3] = ( Gps.LatitudeBinary >> 16 ) & 0xFF;
            AppData[4] = ( Gps.LatitudeBinary >> 8 ) & 0xFF;
            AppData[5] = Gps.LatitudeBinary & 0xFF;
            AppData[6] = ( Gps.LongitudeBinary >> 16 ) & 0xFF;
            AppData[7] = ( Gps.LongitudeBinary >> 8 ) & 0xFF;
            AppData[8] = Gps.LongitudeBinary & 0xFF;

            uint16_t altitudeGps = atoi( Gps.NmeaGpsData.NmeaAltitude );
            AppData[9] = ( altitudeGps >> 8 ) & 0xFF;
            AppData[10] = altitudeGps & 0xFF;
        }
        break;
    case 224:
...
}

The ADR enabling/disabling can be adjusted by changing the following parameter:

/*!
 * LoRaWAN Adaptive Data Rate
 *
 * \remark Please note that when ADR is enabled the end-device should be static
 */
#define LORAWAN_ADR_ON                              1

The application port can be adjusted by changing the following parameter:

/*!
 * LoRaWAN application port
 */
#define LORAWAN_APP_PORT                            5

system/utilities.cpp@9:37deeefbfe45, 2017-04-24 (annotated)

Committer:: mluis
Date:: Mon Apr 24 13:42:18 2017 +0000
Revision:: 9:37deeefbfe45
Parent:: 0:8e36e3d5d706

WARNING: Radio API timings changed from micro-seconds to milliseconds; ; Synchronized with https://github.com/Lora-net/LoRaMac-node git revision e506c246652fa44c3f24cecb89d0707b49ece739; Updated all libraries to the latest versions

Who changed what in which revision?

User	Revision	Line number	New contents of line
mluis	0:8e36e3d5d706	1	/*
mluis	0:8e36e3d5d706	2	/ _____) _ \| \|
mluis	0:8e36e3d5d706	3	( (____ _____ ____ _\| \|_ _____ ____\| \|__
mluis	0:8e36e3d5d706	4	\____ \\| ___ \| (_ _) ___ \|/ ___) _ \
mluis	0:8e36e3d5d706	5	_____) ) ____\| \| \| \|\| \|_\| ____( (___\| \| \| \|
mluis	0:8e36e3d5d706	6	(______/\|_____)_\|_\|_\| \__)_____)\____)_\| \|_\|
mluis	0:8e36e3d5d706	7	(C)2013 Semtech
mluis	0:8e36e3d5d706	8
mluis	0:8e36e3d5d706	9	Description: Helper functions implementation
mluis	0:8e36e3d5d706	10
mluis	0:8e36e3d5d706	11	License: Revised BSD License, see LICENSE.TXT file include in the project
mluis	0:8e36e3d5d706	12
mluis	0:8e36e3d5d706	13	Maintainer: Miguel Luis and Gregory Cristian
mluis	0:8e36e3d5d706	14	*/
mluis	0:8e36e3d5d706	15	#include <stdlib.h>
mluis	0:8e36e3d5d706	16	#include <stdio.h>
mluis	0:8e36e3d5d706	17	#include "board.h"
mluis	0:8e36e3d5d706	18	#include "utilities.h"
mluis	0:8e36e3d5d706	19
mluis	0:8e36e3d5d706	20	/*!
mluis	0:8e36e3d5d706	21	* Redefinition of rand() and srand() standard C functions.
mluis	0:8e36e3d5d706	22	* These functions are redefined in order to get the same behavior across
mluis	0:8e36e3d5d706	23	* different compiler toolchains implementations.
mluis	0:8e36e3d5d706	24	*/
mluis	0:8e36e3d5d706	25	// Standard random functions redefinition start
mluis	0:8e36e3d5d706	26	#define RAND_LOCAL_MAX 2147483647L
mluis	0:8e36e3d5d706	27
mluis	0:8e36e3d5d706	28	static uint32_t next = 1;
mluis	0:8e36e3d5d706	29
mluis	0:8e36e3d5d706	30	int32_t rand1( void )
mluis	0:8e36e3d5d706	31	{
mluis	0:8e36e3d5d706	32	return ( ( next = next * 1103515245L + 12345L ) % RAND_LOCAL_MAX );
mluis	0:8e36e3d5d706	33	}
mluis	0:8e36e3d5d706	34
mluis	0:8e36e3d5d706	35	void srand1( uint32_t seed )
mluis	0:8e36e3d5d706	36	{
mluis	0:8e36e3d5d706	37	next = seed;
mluis	0:8e36e3d5d706	38	}
mluis	0:8e36e3d5d706	39	// Standard random functions redefinition end
mluis	0:8e36e3d5d706	40
mluis	0:8e36e3d5d706	41	int32_t randr( int32_t min, int32_t max )
mluis	0:8e36e3d5d706	42	{
mluis	0:8e36e3d5d706	43	return ( int32_t )rand1( ) % ( max - min + 1 ) + min;
mluis	0:8e36e3d5d706	44	}
mluis	0:8e36e3d5d706	45
mluis	0:8e36e3d5d706	46	void memcpy1( uint8_t dst, const uint8_t src, uint16_t size )
mluis	0:8e36e3d5d706	47	{
mluis	0:8e36e3d5d706	48	while( size-- )
mluis	0:8e36e3d5d706	49	{
mluis	0:8e36e3d5d706	50	dst++ = src++;
mluis	0:8e36e3d5d706	51	}
mluis	0:8e36e3d5d706	52	}
mluis	0:8e36e3d5d706	53
mluis	0:8e36e3d5d706	54	void memcpyr( uint8_t dst, const uint8_t src, uint16_t size )
mluis	0:8e36e3d5d706	55	{
mluis	0:8e36e3d5d706	56	dst = dst + ( size - 1 );
mluis	0:8e36e3d5d706	57	while( size-- )
mluis	0:8e36e3d5d706	58	{
mluis	0:8e36e3d5d706	59	dst-- = src++;
mluis	0:8e36e3d5d706	60	}
mluis	0:8e36e3d5d706	61	}
mluis	0:8e36e3d5d706	62
mluis	0:8e36e3d5d706	63	void memset1( uint8_t *dst, uint8_t value, uint16_t size )
mluis	0:8e36e3d5d706	64	{
mluis	0:8e36e3d5d706	65	while( size-- )
mluis	0:8e36e3d5d706	66	{
mluis	0:8e36e3d5d706	67	*dst++ = value;
mluis	0:8e36e3d5d706	68	}
mluis	0:8e36e3d5d706	69	}
mluis	0:8e36e3d5d706	70
mluis	0:8e36e3d5d706	71	int8_t Nibble2HexChar( uint8_t a )
mluis	0:8e36e3d5d706	72	{
mluis	0:8e36e3d5d706	73	if( a < 10 )
mluis	0:8e36e3d5d706	74	{
mluis	0:8e36e3d5d706	75	return '0' + a;
mluis	0:8e36e3d5d706	76	}
mluis	0:8e36e3d5d706	77	else if( a < 16 )
mluis	0:8e36e3d5d706	78	{
mluis	0:8e36e3d5d706	79	return 'A' + ( a - 10 );
mluis	0:8e36e3d5d706	80	}
mluis	0:8e36e3d5d706	81	else
mluis	0:8e36e3d5d706	82	{
mluis	0:8e36e3d5d706	83	return '?';
mluis	0:8e36e3d5d706	84	}
mluis	0:8e36e3d5d706	85	}

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Type:	Program
Created:	27 Nov 2015
Imports:	69
Forks:	0
Commits:	10
Dependents:	0
Dependencies:	5
Followers:	93

This repository is Public (Unlisted).

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system/utilities.cpp@9:37deeefbfe45, 2017-04-24 (annotated)

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