Semtech
Application example using LoRaWAN-lib MAC layer implementation
Dependencies: mbed LoRaWAN-lib SX1276Lib
Dependents: LoRaWAN-mbed-client-ttn0
LoRaWAN-demo is a ClassA device example project using LoRaWAN-lib and SX1276Lib libraries.
This demo application sends a frame every 4 to 6 seconds (randomly) and displays its current status using a serial port as display(VT100).
The serial port settings are as shown in below image. To access the serial port settings please click on "Setup" menu and then "Serial port..."
The terminal window should be setup as shown in below image. To access the terminal window settings please click on "Setup" menu and then "Terminal..."
The image below shows the VT100 application status.
The application gives the possibility to either activate the device using
- Over The Air Activation (OTAA)
- Personalization activation (PA)
The activation mode can be adjusted in Comissioning.h by changing the following parameter:
/*! * When set to 1 the application uses the Over-the-Air activation procedure * When set to 0 the application uses the Personalization activation procedure */ #define OVER_THE_AIR_ACTIVATION 1
The application gives the possibility to select which kind of network we are connecting to.
- Public Network (true)
- Private Network (false)
The netork type can be changed as follows:
/*! * Indicates if the end-device is to be connected to a private or public network */ #define LORAWAN_PUBLIC_NETWORK true
OTAA
When OTAA is selected the user must porvide a device EUI, an application EUI and an application key.
These can be adjusted by changing the following parameters:
/*!
* Mote device IEEE EUI (big endian)
*/
#define LORAWAN_DEVICE_EUI { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88 }
/*!
* Application IEEE EUI (big endian)
*/
#define LORAWAN_APPLICATION_EUI { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }
/*!
* AES encryption/decryption cipher application key
*/
#define LORAWAN_APPLICATION_KEY { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6, 0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C }
PA
When PA is selected the user must porvide a network ID, a device address, a network session key and an application session key.
These can be adjusted by changing the following parameters:
/*!
* Current network ID
*/
#define LORAWAN_NETWORK_ID ( uint32_t )0
/*!
* Device address on the network (big endian)
*/
#define LORAWAN_DEVICE_ADDRESS ( uint32_t )0x12345678
/*!
* AES encryption/decryption cipher network session key
*/
#define LORAWAN_NWKSKEY { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6, 0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C }
/*!
* AES encryption/decryption cipher application session key
*/
#define LORAWAN_APPSKEY { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6, 0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C }
On top of main.c the user has the possibility to tweak some application settings such as:
- Join requests transmission frequency
- Frames transmission frequency
- Application default datarate
- Confirmed or Unconfirmed frames transmission
- ADR (Adaptive Datarate) ON/OFF
- Application port to be used by the transmitted frames
The join requests transmission frequency can be adjusted by changing the follwoing parameter:
/*! * Join requests trials duty cycle. */ #define OVER_THE_AIR_ACTIVATION_DUTYCYCLE 10000000 // 10 [s] value in us
The frame transmission frequency can be adjusted by changing the follwoing parameters:
/*! * Defines the application data transmission duty cycle. 5s, value in [us]. */ #define APP_TX_DUTYCYCLE 5000000 /*! * Defines a random delay for application data transmission duty cycle. 1s, * value in [us]. */ #define APP_TX_DUTYCYCLE_RND 1000000
The frame transmission scheduling is then executed as follows:
if( ScheduleNextTx == true )
{
ScheduleNextTx = false;
// Schedule next packet transmission
TxDutyCycleTime = APP_TX_DUTYCYCLE + randr( -APP_TX_DUTYCYCLE_RND, APP_TX_DUTYCYCLE_RND );
TimerSetValue( &TxNextPacketTimer, TxDutyCycleTime );
TimerStart( &TxNextPacketTimer );
}
The application default datarate can be adjusted by changing the following parameter:
Quote:
When ADR is off this setting is the fixed datarate that will be used by the application.
When ADR is on this setting is the initial datarate used by the application.
/*! * Default mote datarate */ #define LORAWAN_DEFAULT_DATARATE DR_0
The transmitted frame contents will depend on LORAWAN_CONFIRMED_MSG_ON value.
/*! * LoRaWAN confirmed messages */ #define LORAWAN_CONFIRMED_MSG_ON true
- If LORAWAN_CONFIRMED_MSG_ON equals false then the application payload is one byte corresponding to the AppLed state.
- If LORAWAN_CONFIRMED_MSG_ON equals true then the application payload is six bytes corresponding to the AppLed state, Downlink counter (unsigned 16 bits), received RSSI (signed 16 bits) and received SNR (signed 8 bits).
/*!
* \brief Prepares the payload of the frame
*/
static void PrepareTxFrame( uint8_t port )
{
switch( port )
{
case 15:
{
AppData[0] = AppLedStateOn;
if( IsTxConfirmed == true )
{
AppData[1] = LoRaMacDownlinkStatus.DownlinkCounter >> 8;
AppData[2] = LoRaMacDownlinkStatus.DownlinkCounter;
AppData[3] = LoRaMacDownlinkStatus.Rssi >> 8;
AppData[4] = LoRaMacDownlinkStatus.Rssi;
AppData[5] = LoRaMacDownlinkStatus.Snr;
}
}
break;
case 224:
...
}
The ADR enabling/disabling can be adjusted by changing the following parameter:
/*! * LoRaWAN Adaptive Data Rate * * \remark Please note that when ADR is enabled the end-device should be static */ #define LORAWAN_ADR_ON 1
The application port can be adjusted by changing the following parameter:
/*! * LoRaWAN application port */ #define LORAWAN_APP_PORT 15
Diff: system/crypto/aes.cpp
- Revision:
- 5:1e9f6a365854
- Parent:
- 1:352f608c3337
--- a/system/crypto/aes.cpp Mon Mar 14 09:20:40 2016 +0000
+++ b/system/crypto/aes.cpp Fri May 13 15:15:13 2016 +0000
@@ -46,7 +46,7 @@
#include <stdint.h>
/* define if you have fast 32-bit types on your system */
-#if 1
+#if ( __CORTEX_M != 0 ) // if Cortex is different from M0/M0+
# define HAVE_UINT_32T
#endif
@@ -239,7 +239,7 @@
static uint8_t gf_inv(const uint8_t x)
{ uint8_t p1 = x, p2 = BPOLY, n1 = hibit(x), n2 = 0x80, v1 = 1, v2 = 0;
- if(x < 2)
+ if(x < 2)
return x;
for( ; ; )
@@ -247,20 +247,20 @@
if(n1)
while(n2 >= n1) /* divide polynomial p2 by p1 */
{
- n2 /= n1; /* shift smaller polynomial left */
+ n2 /= n1; /* shift smaller polynomial left */
p2 ^= (p1 * n2) & 0xff; /* and remove from larger one */
- v2 ^= (v1 * n2); /* shift accumulated value and */
+ v2 ^= (v1 * n2); /* shift accumulated value and */
n2 = hibit(p2); /* add into result */
}
else
return v1;
- if(n2) /* repeat with values swapped */
+ if(n2) /* repeat with values swapped */
while(n1 >= n2)
{
- n1 /= n2;
- p1 ^= p2 * n1;
- v1 ^= v2 * n1;
+ n1 /= n2;
+ p1 ^= p2 * n1;
+ v1 ^= v2 * n1;
n1 = hibit(p1);
}
else
@@ -270,13 +270,13 @@
/* The forward and inverse affine transformations used in the S-box */
uint8_t fwd_affine(const uint8_t x)
-{
+{
#if defined( HAVE_UINT_32T )
uint32_t w = x;
w ^= (w << 1) ^ (w << 2) ^ (w << 3) ^ (w << 4);
return 0x63 ^ ((w ^ (w >> 8)) & 0xff);
#else
- return 0x63 ^ x ^ (x << 1) ^ (x << 2) ^ (x << 3) ^ (x << 4)
+ return 0x63 ^ x ^ (x << 1) ^ (x << 2) ^ (x << 3) ^ (x << 4)
^ (x >> 7) ^ (x >> 6) ^ (x >> 5) ^ (x >> 4);
#endif
}
@@ -288,7 +288,7 @@
w = (w << 1) ^ (w << 3) ^ (w << 6);
return 0x05 ^ ((w ^ (w >> 8)) & 0xff);
#else
- return 0x05 ^ (x << 1) ^ (x << 3) ^ (x << 6)
+ return 0x05 ^ (x << 1) ^ (x << 3) ^ (x << 6)
^ (x >> 7) ^ (x >> 5) ^ (x >> 2);
#endif
}
@@ -520,8 +520,8 @@
case 24:
case 32:
break;
- default:
- ctx->rnd = 0;
+ default:
+ ctx->rnd = 0;
return ( uint8_t )-1;
}
block_copy_nn(ctx->ksch, key, keylen);
@@ -648,10 +648,10 @@
return_type aes_cbc_decrypt( const uint8_t *in, uint8_t *out,
int32_t n_block, uint8_t iv[N_BLOCK], const aes_context ctx[1] )
-{
+{
while(n_block--)
{ uint8_t tmp[N_BLOCK];
-
+
//memcpy(tmp, in, N_BLOCK);
block_copy(tmp, in);
if(aes_decrypt(in, out, ctx) != EXIT_SUCCESS)