SX1276 Shield based Applications
Dependencies: X_NUCLEO_IKS01A1 LoRaWAN-lib SX1276Lib mbed
LoRaWAN-SX1276-Application Demo uses SX1276MB1LAS 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 SX1276Lib 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.
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-deviceLORAWAN_APPLICATION_EUI
(8 Bytes)LORAWAN_APPLICATION_KEY
(or DEVKEY) (16 Bytes)
Activation by Personalization (ABP) can be enabled as shown in the figure below.
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-deviceLORAWAN_NWKSKEY
(16 Bytes)LORAWAN_APPSKEY
(16 Bytes)
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 thatAPP_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 anACK
by the network server in the subsequent RX window. When set to 0, noACK
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)
The baud-rate for serial terminal display is 115200
board/board.cpp
- Committer:
- ubhat
- Date:
- 2016-08-26
- Revision:
- 0:42863a11464a
- Child:
- 1:80c1daf19aa4
File content as of revision 0:42863a11464a:
/* / _____) _ | | ( (____ _____ ____ _| |_ _____ ____| |__ \____ \| ___ | (_ _) ___ |/ ___) _ \ _____) ) ____| | | || |_| ____( (___| | | | (______/|_____)_|_|_| \__)_____)\____)_| |_| (C)2015 Semtech Description: Target board general functions implementation License: Revised BSD License, see LICENSE.TXT file include in the project Maintainer: Miguel Luis and Gregory Cristian */ #include "mbed.h" #include "board.h" MoteVersion_t BoardGetVersion( void ); DigitalIn I2cInterrupt( PB_4 ); I2C I2c(I2C_SDA, I2C_SCL); DigitalOut Pc7( PC_7 ); DigitalIn Pc1( PC_1 ); #define AIN_VREF 3.3 // STM32 internal refernce #define AIN_VBAT_DIV 2 // Resistor divider SX1276MB1xAS Radio( NULL ); void BoardInit( void ) { TimerTimeCounterInit( ); } uint8_t BoardGetBatteryLevel( void ) { return 0xFE; } uint32_t BoardGetRandomSeed( void ) { return ( ( *( uint32_t* )ID1 ) ^ ( *( uint32_t* )ID2 ) ^ ( *( uint32_t* )ID3 ) ); } void BoardGetDevEUI( uint8_t *id ) { uint32_t *pDevEuiHWord = ( uint32_t* )&id[4]; if( *pDevEuiHWord == 0 ) { *pDevEuiHWord = BoardGetRandomSeed( ); } } void BoardGetUniqueId( uint8_t *id ) { id[7] = ( ( *( uint32_t* )ID1 )+ ( *( uint32_t* )ID3 ) ) >> 24; id[6] = ( ( *( uint32_t* )ID1 )+ ( *( uint32_t* )ID3 ) ) >> 16; id[5] = ( ( *( uint32_t* )ID1 )+ ( *( uint32_t* )ID3 ) ) >> 8; id[4] = ( ( *( uint32_t* )ID1 )+ ( *( uint32_t* )ID3 ) ); id[3] = ( ( *( uint32_t* )ID2 ) ) >> 24; id[2] = ( ( *( uint32_t* )ID2 ) ) >> 16; id[1] = ( ( *( uint32_t* )ID2 ) ) >> 8; id[0] = ( ( *( uint32_t* )ID2 ) ); }