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

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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@19:678f15b08d8a, 2020-01-28 (annotated)

Committer:: nlam
Date:: Tue Jan 28 19:10:15 2020 +0000
Revision:: 19:678f15b08d8a
Parent:: 2:d119a85c793c

Updated to the Mbed latest libraries and resolved build error, uncommented debug.h.

Who changed what in which revision?

User	Revision	Line number	New contents of line
ubhat	2:d119a85c793c	1	/**************************************************************************
ubhat	2:d119a85c793c	2	Copyright (C) 2009 Lander Casado, Philippas Tsigas
ubhat	2:d119a85c793c	3
ubhat	2:d119a85c793c	4	All rights reserved.
ubhat	2:d119a85c793c	5
ubhat	2:d119a85c793c	6	Permission is hereby granted, free of charge, to any person obtaining
ubhat	2:d119a85c793c	7	a copy of this software and associated documentation files
ubhat	2:d119a85c793c	8	(the "Software"), to deal with the Software without restriction, including
ubhat	2:d119a85c793c	9	without limitation the rights to use, copy, modify, merge, publish,
ubhat	2:d119a85c793c	10	distribute, sublicense, and/or sell copies of the Software, and to
ubhat	2:d119a85c793c	11	permit persons to whom the Software is furnished to do so, subject to
ubhat	2:d119a85c793c	12	the following conditions:
ubhat	2:d119a85c793c	13
ubhat	2:d119a85c793c	14	Redistributions of source code must retain the above copyright notice,
ubhat	2:d119a85c793c	15	this list of conditions and the following disclaimers. Redistributions in
ubhat	2:d119a85c793c	16	binary form must reproduce the above copyright notice, this list of
ubhat	2:d119a85c793c	17	conditions and the following disclaimers in the documentation and/or
ubhat	2:d119a85c793c	18	other materials provided with the distribution.
ubhat	2:d119a85c793c	19
ubhat	2:d119a85c793c	20	In no event shall the authors or copyright holders be liable for any special,
ubhat	2:d119a85c793c	21	incidental, indirect or consequential damages of any kind, or any damages
ubhat	2:d119a85c793c	22	whatsoever resulting from loss of use, data or profits, whether or not
ubhat	2:d119a85c793c	23	advised of the possibility of damage, and on any theory of liability,
ubhat	2:d119a85c793c	24	arising out of or in connection with the use or performance of this software.
ubhat	2:d119a85c793c	25
ubhat	2:d119a85c793c	26	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
ubhat	2:d119a85c793c	27	OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
ubhat	2:d119a85c793c	28	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
ubhat	2:d119a85c793c	29	CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
ubhat	2:d119a85c793c	30	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
ubhat	2:d119a85c793c	31	FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
ubhat	2:d119a85c793c	32	DEALINGS WITH THE SOFTWARE
ubhat	2:d119a85c793c	33
ubhat	2:d119a85c793c	34	*****************************************************************************/
ubhat	2:d119a85c793c	35	//#include <sys/param.h>
ubhat	2:d119a85c793c	36	//#include <sys/systm.h>
ubhat	2:d119a85c793c	37	#include <stdint.h>
ubhat	2:d119a85c793c	38	#include "aes.h"
ubhat	2:d119a85c793c	39	#include "cmac.h"
ubhat	2:d119a85c793c	40	#include "utilities.h"
ubhat	2:d119a85c793c	41
ubhat	2:d119a85c793c	42	#define LSHIFT(v, r) do { \
ubhat	2:d119a85c793c	43	int32_t i; \
ubhat	2:d119a85c793c	44	for (i = 0; i < 15; i++) \
ubhat	2:d119a85c793c	45	(r)[i] = (v)[i] << 1 \| (v)[i + 1] >> 7; \
ubhat	2:d119a85c793c	46	(r)[15] = (v)[15] << 1; \
ubhat	2:d119a85c793c	47	} while (0)
ubhat	2:d119a85c793c	48
ubhat	2:d119a85c793c	49	#define XOR(v, r) do { \
ubhat	2:d119a85c793c	50	int32_t i; \
ubhat	2:d119a85c793c	51	for (i = 0; i < 16; i++) \
ubhat	2:d119a85c793c	52	{ \
ubhat	2:d119a85c793c	53	(r)[i] = (r)[i] ^ (v)[i]; \
ubhat	2:d119a85c793c	54	} \
ubhat	2:d119a85c793c	55	} while (0) \
ubhat	2:d119a85c793c	56
ubhat	2:d119a85c793c	57
ubhat	2:d119a85c793c	58	void AES_CMAC_Init(AES_CMAC_CTX *ctx)
ubhat	2:d119a85c793c	59	{
ubhat	2:d119a85c793c	60	memset1(ctx->X, 0, sizeof ctx->X);
ubhat	2:d119a85c793c	61	ctx->M_n = 0;
ubhat	2:d119a85c793c	62	memset1(ctx->rijndael.ksch, '\0', 240);
ubhat	2:d119a85c793c	63	}
ubhat	2:d119a85c793c	64
ubhat	2:d119a85c793c	65	void AES_CMAC_SetKey(AES_CMAC_CTX *ctx, const uint8_t key[AES_CMAC_KEY_LENGTH])
ubhat	2:d119a85c793c	66	{
ubhat	2:d119a85c793c	67	//rijndael_set_key_enc_only(&ctx->rijndael, key, 128);
ubhat	2:d119a85c793c	68	aes_set_key( key, AES_CMAC_KEY_LENGTH, &ctx->rijndael);
ubhat	2:d119a85c793c	69	}
ubhat	2:d119a85c793c	70
ubhat	2:d119a85c793c	71	void AES_CMAC_Update(AES_CMAC_CTX ctx, const uint8_t data, uint32_t len)
ubhat	2:d119a85c793c	72	{
ubhat	2:d119a85c793c	73	uint32_t mlen;
ubhat	2:d119a85c793c	74	uint8_t in[16];
ubhat	2:d119a85c793c	75
ubhat	2:d119a85c793c	76	if (ctx->M_n > 0) {
ubhat	2:d119a85c793c	77	mlen = MIN(16 - ctx->M_n, len);
ubhat	2:d119a85c793c	78	memcpy1(ctx->M_last + ctx->M_n, data, mlen);
ubhat	2:d119a85c793c	79	ctx->M_n += mlen;
ubhat	2:d119a85c793c	80	if (ctx->M_n < 16 \|\| len == mlen)
ubhat	2:d119a85c793c	81	return;
ubhat	2:d119a85c793c	82	XOR(ctx->M_last, ctx->X);
ubhat	2:d119a85c793c	83	//rijndael_encrypt(&ctx->rijndael, ctx->X, ctx->X);
ubhat	2:d119a85c793c	84	aes_encrypt( ctx->X, ctx->X, &ctx->rijndael);
ubhat	2:d119a85c793c	85	data += mlen;
ubhat	2:d119a85c793c	86	len -= mlen;
ubhat	2:d119a85c793c	87	}
ubhat	2:d119a85c793c	88	while (len > 16) { /* not last block */
ubhat	2:d119a85c793c	89
ubhat	2:d119a85c793c	90	XOR(data, ctx->X);
ubhat	2:d119a85c793c	91	//rijndael_encrypt(&ctx->rijndael, ctx->X, ctx->X);
ubhat	2:d119a85c793c	92
ubhat	2:d119a85c793c	93	memcpy1(in, &ctx->X[0], 16); //Bestela ez du ondo iten
ubhat	2:d119a85c793c	94	aes_encrypt( in, in, &ctx->rijndael);
ubhat	2:d119a85c793c	95	memcpy1(&ctx->X[0], in, 16);
ubhat	2:d119a85c793c	96
ubhat	2:d119a85c793c	97	data += 16;
ubhat	2:d119a85c793c	98	len -= 16;
ubhat	2:d119a85c793c	99	}
ubhat	2:d119a85c793c	100	/* potential last block, save it */
ubhat	2:d119a85c793c	101	memcpy1(ctx->M_last, data, len);
ubhat	2:d119a85c793c	102	ctx->M_n = len;
ubhat	2:d119a85c793c	103	}
ubhat	2:d119a85c793c	104
ubhat	2:d119a85c793c	105	void AES_CMAC_Final(uint8_t digest[AES_CMAC_DIGEST_LENGTH], AES_CMAC_CTX *ctx)
ubhat	2:d119a85c793c	106	{
ubhat	2:d119a85c793c	107	uint8_t K[16];
ubhat	2:d119a85c793c	108	uint8_t in[16];
ubhat	2:d119a85c793c	109	/* generate subkey K1 */
ubhat	2:d119a85c793c	110	memset1(K, '\0', 16);
ubhat	2:d119a85c793c	111
ubhat	2:d119a85c793c	112	//rijndael_encrypt(&ctx->rijndael, K, K);
ubhat	2:d119a85c793c	113
ubhat	2:d119a85c793c	114	aes_encrypt( K, K, &ctx->rijndael);
ubhat	2:d119a85c793c	115
ubhat	2:d119a85c793c	116	if (K[0] & 0x80) {
ubhat	2:d119a85c793c	117	LSHIFT(K, K);
ubhat	2:d119a85c793c	118	K[15] ^= 0x87;
ubhat	2:d119a85c793c	119	} else
ubhat	2:d119a85c793c	120	LSHIFT(K, K);
ubhat	2:d119a85c793c	121
ubhat	2:d119a85c793c	122
ubhat	2:d119a85c793c	123	if (ctx->M_n == 16) {
ubhat	2:d119a85c793c	124	/* last block was a complete block */
ubhat	2:d119a85c793c	125	XOR(K, ctx->M_last);
ubhat	2:d119a85c793c	126
ubhat	2:d119a85c793c	127	} else {
ubhat	2:d119a85c793c	128	/* generate subkey K2 */
ubhat	2:d119a85c793c	129	if (K[0] & 0x80) {
ubhat	2:d119a85c793c	130	LSHIFT(K, K);
ubhat	2:d119a85c793c	131	K[15] ^= 0x87;
ubhat	2:d119a85c793c	132	} else
ubhat	2:d119a85c793c	133	LSHIFT(K, K);
ubhat	2:d119a85c793c	134
ubhat	2:d119a85c793c	135	/* padding(M_last) */
ubhat	2:d119a85c793c	136	ctx->M_last[ctx->M_n] = 0x80;
ubhat	2:d119a85c793c	137	while (++ctx->M_n < 16)
ubhat	2:d119a85c793c	138	ctx->M_last[ctx->M_n] = 0;
ubhat	2:d119a85c793c	139
ubhat	2:d119a85c793c	140	XOR(K, ctx->M_last);
ubhat	2:d119a85c793c	141
ubhat	2:d119a85c793c	142
ubhat	2:d119a85c793c	143	}
ubhat	2:d119a85c793c	144	XOR(ctx->M_last, ctx->X);
ubhat	2:d119a85c793c	145
ubhat	2:d119a85c793c	146	//rijndael_encrypt(&ctx->rijndael, ctx->X, digest);
ubhat	2:d119a85c793c	147
ubhat	2:d119a85c793c	148	memcpy1(in, &ctx->X[0], 16); //Bestela ez du ondo iten
ubhat	2:d119a85c793c	149	aes_encrypt(in, digest, &ctx->rijndael);
ubhat	2:d119a85c793c	150	memset1(K, 0, sizeof K);
ubhat	2:d119a85c793c	151
ubhat	2:d119a85c793c	152	}
ubhat	2:d119a85c793c	153

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