Semtech / LoRaWAN-SX1272-Application-Demo

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Dependencies:   X_NUCLEO_IKS01A1 driver_mbed_TH02 LoRaWAN-lib-v1_0_1 SX1272Lib mbed

Fork of LoRaWAN-SX1272-Application-Demo by Uttam Bhat

LoRaWAN-SX1272-Application Demo uses https://os.mbed.com/components/SX1272MB2xAS/ mbed component shield on a nucleo board platform to demonstrate a Class-A LoRaWAN device in the 915MHz ISM band for North American region. It uses the LoRaWAN-lib and SX1272Lib libraries.

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 /media/uploads/ubhat/hybridenable.png
  • 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. A few examples are associated to specific Application Port, and are defined in Config.h
  • 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

The baud-rate for serial terminal display is 115200

app/LoRaEventProc.h@0:6cc76d70e2a1, 2017-04-06 (annotated)

Committer:
ubhat
Date:
Thu Apr 06 21:59:50 2017 +0000
Revision:
0:6cc76d70e2a1
Child:
4:d49b89361b67
LoRaWAN SX1272 Application

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ubhat 0:6cc76d70e2a1 1 /*
ubhat 0:6cc76d70e2a1 2 / _____) _ | |
ubhat 0:6cc76d70e2a1 3 ( (____ _____ ____ _| |_ _____ ____| |__
ubhat 0:6cc76d70e2a1 4 \____ \| ___ | (_ _) ___ |/ ___) _ \
ubhat 0:6cc76d70e2a1 5 _____) ) ____| | | || |_| ____( (___| | | |
ubhat 0:6cc76d70e2a1 6 (______/|_____)_|_|_| \__)_____)\____)_| |_|
ubhat 0:6cc76d70e2a1 7 (C)2015 Semtech
ubhat 0:6cc76d70e2a1 8
ubhat 0:6cc76d70e2a1 9 Description: Define events during Join, Tx & Rx
ubhat 0:6cc76d70e2a1 10 Prepare TX packet by appending with appropriate application data
ubhat 0:6cc76d70e2a1 11
ubhat 0:6cc76d70e2a1 12 License: Revised BSD License, see LICENSE.TXT file include in the project
ubhat 0:6cc76d70e2a1 13
ubhat 0:6cc76d70e2a1 14 Maintainer: Uttam Bhat
ubhat 0:6cc76d70e2a1 15 */
ubhat 0:6cc76d70e2a1 16
ubhat 0:6cc76d70e2a1 17 #ifndef __LORA_EVENT_PROC_H__
ubhat 0:6cc76d70e2a1 18 #define __LORA_EVENT_PROC_H__
ubhat 0:6cc76d70e2a1 19
ubhat 0:6cc76d70e2a1 20 #include "board.h"
ubhat 0:6cc76d70e2a1 21 #include "LoRaApp.h"
ubhat 0:6cc76d70e2a1 22 #include "LoRaDeviceStateProc.h"
ubhat 0:6cc76d70e2a1 23
ubhat 0:6cc76d70e2a1 24 #define APP_TX_DUTYCYCLE_RND 1000000
ubhat 0:6cc76d70e2a1 25
ubhat 0:6cc76d70e2a1 26 /*!
ubhat 0:6cc76d70e2a1 27 * \brief Prepares the payload of the frame specific to the application port
ubhat 0:6cc76d70e2a1 28 *
ubhat 0:6cc76d70e2a1 29 * \param [IN] port application port
ubhat 0:6cc76d70e2a1 30 */
ubhat 0:6cc76d70e2a1 31 void PrepareLoRaFrame( uint8_t port );
ubhat 0:6cc76d70e2a1 32
ubhat 0:6cc76d70e2a1 33 /*!
ubhat 0:6cc76d70e2a1 34 * \brief Prepares the payload of the frame based on application port
ubhat 0:6cc76d70e2a1 35 */
ubhat 0:6cc76d70e2a1 36 void InitNextTxInterrupt( uint8_t port );
ubhat 0:6cc76d70e2a1 37
ubhat 0:6cc76d70e2a1 38 /*!
ubhat 0:6cc76d70e2a1 39 * \brief Define action during the Network Join process: Blink, Toggle or Set LED ON
ubhat 0:6cc76d70e2a1 40 */
ubhat 0:6cc76d70e2a1 41 void JoinEvent( void );
ubhat 0:6cc76d70e2a1 42
ubhat 0:6cc76d70e2a1 43 /*!
ubhat 0:6cc76d70e2a1 44 * \brief Define action during the Transmit process: Blink, Toggle or Set LED ON
ubhat 0:6cc76d70e2a1 45 */
ubhat 0:6cc76d70e2a1 46 void TxEvent( void );
ubhat 0:6cc76d70e2a1 47
ubhat 0:6cc76d70e2a1 48 /*!
ubhat 0:6cc76d70e2a1 49 * \brief Define action when downlink received: Blink, Toggle or Set LED ON
ubhat 0:6cc76d70e2a1 50 */
ubhat 0:6cc76d70e2a1 51 void RxEvent( void );
ubhat 0:6cc76d70e2a1 52
ubhat 0:6cc76d70e2a1 53 #endif // __LORA_EVENT_PROC_H__