LoRaWAN-NAMote72-Application-Demo - Demonstration of Class-A LoRaWAN device using NAM…

Semtech » Code » LoRaWAN-NAMote72-Application-Demo

Semtech / LoRaWAN-NAMote72-Application-Demo

Demonstration of Class-A LoRaWAN device using NAMote-72

Dependencies: LoRaWAN-lib mbed lib_mpl3115a2 lib_mma8451q lib_gps SX1272Lib

Dependents: LoRaWAN-NAMote72-BVS-confirmed-tester-0-7v1_copy

LoRaWAN-NAMote72 Application Demo is a Class-A device example project using LoRaWAN-lib and SX1272Lib libraries.

This project is compliant with LoRaWAN V1.0.1 specification.

Comissioning.h (LoRaWAN Network Configuration)

The end-device can be activated in one of the two ways:

Over the Air (OTA) activation can be enabled as shown in the figure below. /media/uploads/ubhat/ota_enable.png

The end-device must be configured with the following parameters:

LORAWAN_DEVICE_EUI (8 Bytes) : Fist 3 Bytes is the Organizationally Unique Identifier (OUI) followed by 5 bytes of unique ID. If not defined by user, then the firmware automatically assigns one to the end-device
LORAWAN_APPLICATION_EUI (8 Bytes)
LORAWAN_APPLICATION_KEY (or DEVKEY) (16 Bytes)

/media/uploads/ubhat/ota_eui.png

Activation by Personalization (ABP) can be enabled as shown in the figure below. /media/uploads/ubhat/abp_enable.png

The end-device must be configured with the following parameters:

LORAWAN_DEVICE_ADDRESS (4 Bytes) : If not defined by user, then the firmware automatically assigns one to the end-device
LORAWAN_NWKSKEY (16 Bytes)
LORAWAN_APPSKEY (16 Bytes)

/media/uploads/ubhat/abp_key.png

Config.h (LoRaWAN Communication Parameters)

Mode of Operation : Hybrid If the end-device needs to be configured to operate over 8-channels, then Hybrid Mode needs to be enabled

Mode of Operation : Frequency Hop If the end-device needs to be configured to operate over 64-channels, then Hybrid Mode needs to be disabled

Delay between successive JOIN REQUESTs : The delay between successive Join Requests (until the end-device joins the network) can be configured using the parameter OVER_THE_AIR_ACTIVATION_DUTYCYCLE

Inter-Frame Delay : One can change the delay between each frame transmission using APP_TX_DUTYCYCLE It is advisable that APP_TX_DUTYCYCLE is greater than or equal to 3sec.

Data Rate : The data rate can be configured as per LoRaWAN specification using the paramter LORAWAN_DEFAULT_DATARATE. The range of values are DR_0, DR_1, DR_2, DR_3 and DR_4

Confirmed/Unconfirmed Messages : The uplink message or payload can be chosen to be confirmed or unconfirmed using the parameter LORAWAN_CONFIRMED_MSG_ON. When set to 1, the transmitted messages need to be confirmed with an ACK by the network server in the subsequent RX window. When set to 0, no ACK is requested.

ADR ON/OFF : The ADR can be enabled or disabled using the parameter LORAWAN_ADR_ON. When set to 1, ADR is enabled and disabled when set to 0.

Application Port : The application port can be set using parameter LORAWAN_APP_PORT.

Payload Length : The lenght of the payload (in bytes) to be transmitted can be configured using LORAWAN_APP_DATA_SIZE

Transmit Power : The transmit power can be configured using LORAWAN_TX_POWER (LoRaMAC verifies if the set power is compliant with the LoRaWAN spec and FCC guidelines)

/media/uploads/ubhat/loraconfig.png

Main.cpp (Device State Machine)

The end-device state machine is defined.

Initial State : Device is initialized.

Join State : For OTA, Join Request is transmitted to the network until Join Accept is received by the end-device. Join event function is called that sets Red LED ON.

Send State : Transmit payload frame is prepared. Tx event is called that blinks the Red LED indicating uplink transmission.

Cycle State : Next packet transmission is scheduled

LoRaEventProc.cpp (Events and On-board Application)

Define events during Join, Tx & Rx. Prepare TX packet by appending with appropriate application data.

/media/uploads/ubhat/lora_events.png

PrepareLoRaFrame(uint8_t port ) : Prepare LoRa payload frame with on-board application data such as GPS, Temperature, Battery, etc. LoRa.ApplicationCall(AppType ) calls application AppType defined in LoRaApp.cpp. AppType is defined in LoRaApp.h

/media/uploads/ubhat/lora_app.png

LoRaApp.cpp

User-defined applications such as GPS, Temp, Accelerometer, LED indications etc. Event based actions such as LED blink on Tx, LED toggle on downlink etc /media/uploads/ubhat/apptype.png

LoRaDeviceStateProc.cpp

Process function calls corresponding to different Device states /media/uploads/ubhat/device_state.png

LoRaMacLayerService.cpp

Define MAC Layer Services: MLME & MCPS

Serial Terminal Display

By using a serial port connection using applications such as teraterm or putty, one can view the status of the End-Device. Once the End-Device Joins the network, transmission parameters such as payload data, application port, message type etc. are displayed on the terminal.

/media/uploads/ubhat/serial.png

Default Application Payload

This application defaults to sending uplink data to logical port 5. The application payload consists of: /media/uploads/jknapp_smtc/payload.png

Sample Application Payload Calculation for Longitude/Latitude

Payload => 00 19 F6 352BBA A94C20 FFFF

Temperature Calculation

19_H => 25₁₀

Temp = 25/2 = 12.5 ^oC

Battery Level

FF_H => 100 %

F6_H => 96.5 %

Longitude Calculation

longitude = A94C20_H => 11095072₁₀

longitudinal coordinate = -360 + (longitude₁₀ x 180/(2²³))

longitudinal coordinate = -121.93

Latitude Calculation

latitude = 352BBA_H = 3484602₁₀

latitude coordinate = (latitude₁₀ x 90/(2²³-1))

latitude coordinate = 37.39

system/crypto/cmac.cpp@0:69f2e28d12c1, 2016-05-17 (annotated)

Committer:: ubhat
Date:: Tue May 17 00:21:55 2016 +0000
Revision:: 0:69f2e28d12c1

Project for LoRa Bootcamp

Who changed what in which revision?

User	Revision	Line number	New contents of line
ubhat	0:69f2e28d12c1	1	/**************************************************************************
ubhat	0:69f2e28d12c1	2	Copyright (C) 2009 Lander Casado, Philippas Tsigas
ubhat	0:69f2e28d12c1	3
ubhat	0:69f2e28d12c1	4	All rights reserved.
ubhat	0:69f2e28d12c1	5
ubhat	0:69f2e28d12c1	6	Permission is hereby granted, free of charge, to any person obtaining
ubhat	0:69f2e28d12c1	7	a copy of this software and associated documentation files
ubhat	0:69f2e28d12c1	8	(the "Software"), to deal with the Software without restriction, including
ubhat	0:69f2e28d12c1	9	without limitation the rights to use, copy, modify, merge, publish,
ubhat	0:69f2e28d12c1	10	distribute, sublicense, and/or sell copies of the Software, and to
ubhat	0:69f2e28d12c1	11	permit persons to whom the Software is furnished to do so, subject to
ubhat	0:69f2e28d12c1	12	the following conditions:
ubhat	0:69f2e28d12c1	13
ubhat	0:69f2e28d12c1	14	Redistributions of source code must retain the above copyright notice,
ubhat	0:69f2e28d12c1	15	this list of conditions and the following disclaimers. Redistributions in
ubhat	0:69f2e28d12c1	16	binary form must reproduce the above copyright notice, this list of
ubhat	0:69f2e28d12c1	17	conditions and the following disclaimers in the documentation and/or
ubhat	0:69f2e28d12c1	18	other materials provided with the distribution.
ubhat	0:69f2e28d12c1	19
ubhat	0:69f2e28d12c1	20	In no event shall the authors or copyright holders be liable for any special,
ubhat	0:69f2e28d12c1	21	incidental, indirect or consequential damages of any kind, or any damages
ubhat	0:69f2e28d12c1	22	whatsoever resulting from loss of use, data or profits, whether or not
ubhat	0:69f2e28d12c1	23	advised of the possibility of damage, and on any theory of liability,
ubhat	0:69f2e28d12c1	24	arising out of or in connection with the use or performance of this software.
ubhat	0:69f2e28d12c1	25
ubhat	0:69f2e28d12c1	26	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
ubhat	0:69f2e28d12c1	27	OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
ubhat	0:69f2e28d12c1	28	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
ubhat	0:69f2e28d12c1	29	CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
ubhat	0:69f2e28d12c1	30	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
ubhat	0:69f2e28d12c1	31	FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
ubhat	0:69f2e28d12c1	32	DEALINGS WITH THE SOFTWARE
ubhat	0:69f2e28d12c1	33
ubhat	0:69f2e28d12c1	34	*****************************************************************************/
ubhat	0:69f2e28d12c1	35	//#include <sys/param.h>
ubhat	0:69f2e28d12c1	36	//#include <sys/systm.h>
ubhat	0:69f2e28d12c1	37	#include <stdint.h>
ubhat	0:69f2e28d12c1	38	#include "aes.h"
ubhat	0:69f2e28d12c1	39	#include "cmac.h"
ubhat	0:69f2e28d12c1	40	#include "utilities.h"
ubhat	0:69f2e28d12c1	41
ubhat	0:69f2e28d12c1	42	#define LSHIFT(v, r) do { \
ubhat	0:69f2e28d12c1	43	int32_t i; \
ubhat	0:69f2e28d12c1	44	for (i = 0; i < 15; i++) \
ubhat	0:69f2e28d12c1	45	(r)[i] = (v)[i] << 1 \| (v)[i + 1] >> 7; \
ubhat	0:69f2e28d12c1	46	(r)[15] = (v)[15] << 1; \
ubhat	0:69f2e28d12c1	47	} while (0)
ubhat	0:69f2e28d12c1	48
ubhat	0:69f2e28d12c1	49	#define XOR(v, r) do { \
ubhat	0:69f2e28d12c1	50	int32_t i; \
ubhat	0:69f2e28d12c1	51	for (i = 0; i < 16; i++) \
ubhat	0:69f2e28d12c1	52	{ \
ubhat	0:69f2e28d12c1	53	(r)[i] = (r)[i] ^ (v)[i]; \
ubhat	0:69f2e28d12c1	54	} \
ubhat	0:69f2e28d12c1	55	} while (0) \
ubhat	0:69f2e28d12c1	56
ubhat	0:69f2e28d12c1	57
ubhat	0:69f2e28d12c1	58	void AES_CMAC_Init(AES_CMAC_CTX *ctx)
ubhat	0:69f2e28d12c1	59	{
ubhat	0:69f2e28d12c1	60	memset1(ctx->X, 0, sizeof ctx->X);
ubhat	0:69f2e28d12c1	61	ctx->M_n = 0;
ubhat	0:69f2e28d12c1	62	memset1(ctx->rijndael.ksch, '\0', 240);
ubhat	0:69f2e28d12c1	63	}
ubhat	0:69f2e28d12c1	64
ubhat	0:69f2e28d12c1	65	void AES_CMAC_SetKey(AES_CMAC_CTX *ctx, const uint8_t key[AES_CMAC_KEY_LENGTH])
ubhat	0:69f2e28d12c1	66	{
ubhat	0:69f2e28d12c1	67	//rijndael_set_key_enc_only(&ctx->rijndael, key, 128);
ubhat	0:69f2e28d12c1	68	aes_set_key( key, AES_CMAC_KEY_LENGTH, &ctx->rijndael);
ubhat	0:69f2e28d12c1	69	}
ubhat	0:69f2e28d12c1	70
ubhat	0:69f2e28d12c1	71	void AES_CMAC_Update(AES_CMAC_CTX ctx, const uint8_t data, uint32_t len)
ubhat	0:69f2e28d12c1	72	{
ubhat	0:69f2e28d12c1	73	uint32_t mlen;
ubhat	0:69f2e28d12c1	74	uint8_t in[16];
ubhat	0:69f2e28d12c1	75
ubhat	0:69f2e28d12c1	76	if (ctx->M_n > 0) {
ubhat	0:69f2e28d12c1	77	mlen = MIN(16 - ctx->M_n, len);
ubhat	0:69f2e28d12c1	78	memcpy1(ctx->M_last + ctx->M_n, data, mlen);
ubhat	0:69f2e28d12c1	79	ctx->M_n += mlen;
ubhat	0:69f2e28d12c1	80	if (ctx->M_n < 16 \|\| len == mlen)
ubhat	0:69f2e28d12c1	81	return;
ubhat	0:69f2e28d12c1	82	XOR(ctx->M_last, ctx->X);
ubhat	0:69f2e28d12c1	83	//rijndael_encrypt(&ctx->rijndael, ctx->X, ctx->X);
ubhat	0:69f2e28d12c1	84	aes_encrypt( ctx->X, ctx->X, &ctx->rijndael);
ubhat	0:69f2e28d12c1	85	data += mlen;
ubhat	0:69f2e28d12c1	86	len -= mlen;
ubhat	0:69f2e28d12c1	87	}
ubhat	0:69f2e28d12c1	88	while (len > 16) { /* not last block */
ubhat	0:69f2e28d12c1	89
ubhat	0:69f2e28d12c1	90	XOR(data, ctx->X);
ubhat	0:69f2e28d12c1	91	//rijndael_encrypt(&ctx->rijndael, ctx->X, ctx->X);
ubhat	0:69f2e28d12c1	92
ubhat	0:69f2e28d12c1	93	memcpy1(in, &ctx->X[0], 16); //Bestela ez du ondo iten
ubhat	0:69f2e28d12c1	94	aes_encrypt( in, in, &ctx->rijndael);
ubhat	0:69f2e28d12c1	95	memcpy1(&ctx->X[0], in, 16);
ubhat	0:69f2e28d12c1	96
ubhat	0:69f2e28d12c1	97	data += 16;
ubhat	0:69f2e28d12c1	98	len -= 16;
ubhat	0:69f2e28d12c1	99	}
ubhat	0:69f2e28d12c1	100	/* potential last block, save it */
ubhat	0:69f2e28d12c1	101	memcpy1(ctx->M_last, data, len);
ubhat	0:69f2e28d12c1	102	ctx->M_n = len;
ubhat	0:69f2e28d12c1	103	}
ubhat	0:69f2e28d12c1	104
ubhat	0:69f2e28d12c1	105	void AES_CMAC_Final(uint8_t digest[AES_CMAC_DIGEST_LENGTH], AES_CMAC_CTX *ctx)
ubhat	0:69f2e28d12c1	106	{
ubhat	0:69f2e28d12c1	107	uint8_t K[16];
ubhat	0:69f2e28d12c1	108	uint8_t in[16];
ubhat	0:69f2e28d12c1	109	/* generate subkey K1 */
ubhat	0:69f2e28d12c1	110	memset1(K, '\0', 16);
ubhat	0:69f2e28d12c1	111
ubhat	0:69f2e28d12c1	112	//rijndael_encrypt(&ctx->rijndael, K, K);
ubhat	0:69f2e28d12c1	113
ubhat	0:69f2e28d12c1	114	aes_encrypt( K, K, &ctx->rijndael);
ubhat	0:69f2e28d12c1	115
ubhat	0:69f2e28d12c1	116	if (K[0] & 0x80) {
ubhat	0:69f2e28d12c1	117	LSHIFT(K, K);
ubhat	0:69f2e28d12c1	118	K[15] ^= 0x87;
ubhat	0:69f2e28d12c1	119	} else
ubhat	0:69f2e28d12c1	120	LSHIFT(K, K);
ubhat	0:69f2e28d12c1	121
ubhat	0:69f2e28d12c1	122
ubhat	0:69f2e28d12c1	123	if (ctx->M_n == 16) {
ubhat	0:69f2e28d12c1	124	/* last block was a complete block */
ubhat	0:69f2e28d12c1	125	XOR(K, ctx->M_last);
ubhat	0:69f2e28d12c1	126
ubhat	0:69f2e28d12c1	127	} else {
ubhat	0:69f2e28d12c1	128	/* generate subkey K2 */
ubhat	0:69f2e28d12c1	129	if (K[0] & 0x80) {
ubhat	0:69f2e28d12c1	130	LSHIFT(K, K);
ubhat	0:69f2e28d12c1	131	K[15] ^= 0x87;
ubhat	0:69f2e28d12c1	132	} else
ubhat	0:69f2e28d12c1	133	LSHIFT(K, K);
ubhat	0:69f2e28d12c1	134
ubhat	0:69f2e28d12c1	135	/* padding(M_last) */
ubhat	0:69f2e28d12c1	136	ctx->M_last[ctx->M_n] = 0x80;
ubhat	0:69f2e28d12c1	137	while (++ctx->M_n < 16)
ubhat	0:69f2e28d12c1	138	ctx->M_last[ctx->M_n] = 0;
ubhat	0:69f2e28d12c1	139
ubhat	0:69f2e28d12c1	140	XOR(K, ctx->M_last);
ubhat	0:69f2e28d12c1	141
ubhat	0:69f2e28d12c1	142
ubhat	0:69f2e28d12c1	143	}
ubhat	0:69f2e28d12c1	144	XOR(ctx->M_last, ctx->X);
ubhat	0:69f2e28d12c1	145
ubhat	0:69f2e28d12c1	146	//rijndael_encrypt(&ctx->rijndael, ctx->X, digest);
ubhat	0:69f2e28d12c1	147
ubhat	0:69f2e28d12c1	148	memcpy1(in, &ctx->X[0], 16); //Bestela ez du ondo iten
ubhat	0:69f2e28d12c1	149	aes_encrypt(in, digest, &ctx->rijndael);
ubhat	0:69f2e28d12c1	150	memset1(K, 0, sizeof K);
ubhat	0:69f2e28d12c1	151
ubhat	0:69f2e28d12c1	152	}
ubhat	0:69f2e28d12c1	153

Repository toolbox

Export to desktop IDE

Build repository

Repository details

Type:	Program
Created:	17 May 2016
Imports:	682
Forks:	2
Commits:	20
Dependents:	1
Dependencies:	6
Followers:	108