Semtech / LoRaWAN-SX1272-Application-Demo

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

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

board/board.cpp@8:7ddaacb6dda6, 2017-11-28 (annotated)

Committer:
ubhat
Date:
Tue Nov 28 07:30:45 2017 +0000
Revision:
8:7ddaacb6dda6
Parent:
2:19dd7bfcacf7 
Changed parsing of random seed

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: Target board general functions implementation
ubhat 0:6cc76d70e2a1 10
ubhat 0:6cc76d70e2a1 11 License: Revised BSD License, see LICENSE.TXT file include in the project
ubhat 0:6cc76d70e2a1 12
ubhat 0:6cc76d70e2a1 13 Maintainer: Miguel Luis and Gregory Cristian
ubhat 0:6cc76d70e2a1 14 */
ubhat 0:6cc76d70e2a1 15 #include "mbed.h"
ubhat 0:6cc76d70e2a1 16 #include "board.h"
ubhat 0:6cc76d70e2a1 17
ubhat 2:19dd7bfcacf7 18 DigitalIn I2cInterrupt( D5 );
ubhat 0:6cc76d70e2a1 19 I2C I2c(I2C_SDA, I2C_SCL);
ubhat 0:6cc76d70e2a1 20
ubhat 2:19dd7bfcacf7 21 DigitalOut Pc7( D9 );
ubhat 2:19dd7bfcacf7 22 DigitalIn Pc1( A4 );
ubhat 0:6cc76d70e2a1 23
ubhat 2:19dd7bfcacf7 24 //DigitalIn UsrButton( PC_13 );
ubhat 2:19dd7bfcacf7 25 DigitalIn UsrButton( D10 );
ubhat 0:6cc76d70e2a1 26
ubhat 2:19dd7bfcacf7 27 DigitalOut Led( D6 );
ubhat 1:428dbf097fe6 28
ubhat 0:6cc76d70e2a1 29 #ifdef USE_IKS01A1_SENSOR
ubhat 0:6cc76d70e2a1 30 X_NUCLEO_IKS01A1 *mems_expansion_board = X_NUCLEO_IKS01A1::Instance();
ubhat 0:6cc76d70e2a1 31 MotionSensor *accelerometer = mems_expansion_board->GetAccelerometer();
ubhat 0:6cc76d70e2a1 32 HumiditySensor *humidity_sensor = mems_expansion_board->ht_sensor;;
ubhat 0:6cc76d70e2a1 33 PressureSensor *pressure_sensor = mems_expansion_board->pt_sensor;
ubhat 0:6cc76d70e2a1 34 TempSensor *temp_sensor1 = mems_expansion_board->ht_sensor;
ubhat 0:6cc76d70e2a1 35 TempSensor *temp_sensor2 = mems_expansion_board->pt_sensor;
ubhat 0:6cc76d70e2a1 36 #endif
ubhat 0:6cc76d70e2a1 37
ubhat 0:6cc76d70e2a1 38 SX1272MB2xAS Radio( NULL );
ubhat 0:6cc76d70e2a1 39
ubhat 0:6cc76d70e2a1 40 void BoardInit( void )
ubhat 0:6cc76d70e2a1 41 {
ubhat 0:6cc76d70e2a1 42 TimerTimeCounterInit( );
ubhat 0:6cc76d70e2a1 43 }
ubhat 0:6cc76d70e2a1 44
ubhat 0:6cc76d70e2a1 45 uint8_t BoardGetBatteryLevel( void )
ubhat 0:6cc76d70e2a1 46 {
ubhat 0:6cc76d70e2a1 47 return 0xFE;
ubhat 0:6cc76d70e2a1 48 }
ubhat 0:6cc76d70e2a1 49
ubhat 0:6cc76d70e2a1 50 uint32_t BoardGetRandomSeed( void )
ubhat 0:6cc76d70e2a1 51 {
ubhat 0:6cc76d70e2a1 52 return ( ( *( uint32_t* )ID1 ) ^ ( *( uint32_t* )ID2 ) ^ ( *( uint32_t* )ID3 ) );
ubhat 0:6cc76d70e2a1 53 }
ubhat 0:6cc76d70e2a1 54
ubhat 0:6cc76d70e2a1 55 void BoardGetDevEUI( uint8_t *id )
ubhat 0:6cc76d70e2a1 56 {
ubhat 8:7ddaacb6dda6 57 uint32_t DevEuiHWord = 0;
ubhat 0:6cc76d70e2a1 58
ubhat 8:7ddaacb6dda6 59 if( ( id[7] == 0 ) && ( id[6] == 0 ) && ( id[5] == 0 ) && ( id[4] == 0 ) )
ubhat 0:6cc76d70e2a1 60 {
ubhat 8:7ddaacb6dda6 61 DevEuiHWord = BoardGetRandomSeed( );
ubhat 8:7ddaacb6dda6 62 id[7] = (DevEuiHWord >> 3) & 0xFF;
ubhat 8:7ddaacb6dda6 63 id[6] = (DevEuiHWord >> 2) & 0xFF;
ubhat 8:7ddaacb6dda6 64 id[5] = (DevEuiHWord >> 1) & 0xFF;
ubhat 8:7ddaacb6dda6 65 id[4] = (DevEuiHWord >> 0) & 0xFF;
ubhat 8:7ddaacb6dda6 66 }
ubhat 0:6cc76d70e2a1 67 }
ubhat 0:6cc76d70e2a1 68
ubhat 0:6cc76d70e2a1 69 void BoardGetUniqueId( uint8_t *id )
ubhat 0:6cc76d70e2a1 70 {
ubhat 0:6cc76d70e2a1 71 id[7] = ( ( *( uint32_t* )ID1 )+ ( *( uint32_t* )ID3 ) ) >> 24;
ubhat 0:6cc76d70e2a1 72 id[6] = ( ( *( uint32_t* )ID1 )+ ( *( uint32_t* )ID3 ) ) >> 16;
ubhat 0:6cc76d70e2a1 73 id[5] = ( ( *( uint32_t* )ID1 )+ ( *( uint32_t* )ID3 ) ) >> 8;
ubhat 0:6cc76d70e2a1 74 id[4] = ( ( *( uint32_t* )ID1 )+ ( *( uint32_t* )ID3 ) );
ubhat 0:6cc76d70e2a1 75 id[3] = ( ( *( uint32_t* )ID2 ) ) >> 24;
ubhat 0:6cc76d70e2a1 76 id[2] = ( ( *( uint32_t* )ID2 ) ) >> 16;
ubhat 0:6cc76d70e2a1 77 id[1] = ( ( *( uint32_t* )ID2 ) ) >> 8;
ubhat 0:6cc76d70e2a1 78 id[0] = ( ( *( uint32_t* )ID2 ) );
ubhat 0:6cc76d70e2a1 79 }
ubhat 0:6cc76d70e2a1 80