Semtech
LoRaWAN MAC layer implementation
Dependents: LoRaWAN-demo-72_tjm LoRaWAN-demo-72_jlc LoRaWAN-demo-elmo frdm_LoRa_Connect_Woodstream_Demo_tjm ... more
LoRAWAN-lib is a port of the GitHub LoRaMac-node LoRaWAN MAC layer implementation.
This library depends on the SX1276Lib or SX1272Lib radio drivers depending on the used mbed component shield.
This library depends also on some cryptographic helper functions as well as helper functions for the timers management. These can be found on the example projects under the system directory.
The example projects are:
The LoRaWAN specification specifies different ISM bands operating parameters. These are all implemented under the LoRaMac-board.h file.
In order to select which band to use, please change line 24 of board.h file provided on the examples projects as follows:
EU868
board.h
#define USE_BAND_868
US915
board.h
#define USE_BAND_915
US915 - Hybrid
board.h
#define USE_BAND_915_HYBRID
CN780
board.h
#define USE_BAND_780
EU433
board.h
#define USE_BAND_433
Diff: LoRaMac-definitions.h
- Revision:
- 8:26002607de9c
- Parent:
- 7:c16969e0f70f
--- a/LoRaMac-definitions.h Tue Jul 05 13:24:54 2016 +0000
+++ b/LoRaMac-definitions.h Mon Apr 24 09:42:37 2017 +0000
@@ -103,6 +103,13 @@
#define DR_7 7 // FSK
/*!
+ * Verification of default datarate
+ */
+#if ( LORAMAC_DEFAULT_DATARATE > DR_5 )
+#error "A default DR higher than DR_5 may lead to connectivity loss."
+#endif
+
+/*!
* Second reception window channel definition.
*/
// Channel = { Frequency [Hz], Datarate }
@@ -125,19 +132,104 @@
#define LC3 { 433575000, { ( ( DR_5 << 4 ) | DR_0 ) }, 0 }
/*!
- * LoRaMac duty cycle for the back-off procedure
- */
-#define BACKOFF_DC_1_HOUR 100
-#define BACKOFF_DC_10_HOURS 1000
-#define BACKOFF_DC_24_HOURS 10000
-
-#define BACKOFF_RND_OFFSET 600000
-
-/*!
* LoRaMac channels which are allowed for the join procedure
*/
#define JOIN_CHANNELS ( uint16_t )( LC( 1 ) | LC( 2 ) | LC( 3 ) )
+#elif defined( USE_BAND_470 )
+
+/*!
+ * LoRaMac maximum number of channels
+ */
+#define LORA_MAX_NB_CHANNELS 96
+
+/*!
+ * Minimal datarate that can be used by the node
+ */
+#define LORAMAC_TX_MIN_DATARATE DR_0
+
+/*!
+ * Maximal datarate that can be used by the node
+ */
+#define LORAMAC_TX_MAX_DATARATE DR_5
+
+/*!
+ * Minimal datarate that can be used by the node
+ */
+#define LORAMAC_RX_MIN_DATARATE DR_0
+
+/*!
+ * Maximal datarate that can be used by the node
+ */
+#define LORAMAC_RX_MAX_DATARATE DR_5
+
+/*!
+ * Default datarate used by the node
+ */
+#define LORAMAC_DEFAULT_DATARATE DR_0
+
+/*!
+ * Minimal Rx1 receive datarate offset
+ */
+#define LORAMAC_MIN_RX1_DR_OFFSET 0
+
+/*!
+ * Maximal Rx1 receive datarate offset
+ */
+#define LORAMAC_MAX_RX1_DR_OFFSET 3
+
+/*!
+ * Minimal Tx output power that can be used by the node
+ */
+#define LORAMAC_MIN_TX_POWER TX_POWER_2_DBM
+
+/*!
+ * Maximal Tx output power that can be used by the node
+ */
+#define LORAMAC_MAX_TX_POWER TX_POWER_17_DBM
+
+/*!
+ * Default Tx output power used by the node
+ */
+#define LORAMAC_DEFAULT_TX_POWER TX_POWER_14_DBM
+
+/*!
+ * LoRaMac TxPower definition
+ */
+#define TX_POWER_17_DBM 0
+#define TX_POWER_16_DBM 1
+#define TX_POWER_14_DBM 2
+#define TX_POWER_12_DBM 3
+#define TX_POWER_10_DBM 4
+#define TX_POWER_7_DBM 5
+#define TX_POWER_5_DBM 6
+#define TX_POWER_2_DBM 7
+
+
+/*!
+ * LoRaMac datarates definition
+ */
+#define DR_0 0 // SF12 - BW125 |
+#define DR_1 1 // SF11 - BW125 |
+#define DR_2 2 // SF10 - BW125 |
+#define DR_3 3 // SF9 - BW125 |
+#define DR_4 4 // SF8 - BW125 |
+#define DR_5 5 // SF7 - BW125 |
+
+/*!
+ * Second reception window channel definition.
+ */
+// Channel = { Frequency [Hz], Datarate }
+#define RX_WND_2_CHANNEL { 505300000, DR_0 }
+
+/*!
+ * LoRaMac maximum number of bands
+ */
+#define LORA_MAX_NB_BANDS 1
+
+// Band = { DutyCycle, TxMaxPower, LastTxDoneTime, TimeOff }
+#define BAND0 { 1, TX_POWER_17_DBM, 0, 0 } // 100.0 %
+
#elif defined( USE_BAND_780 )
/*!
@@ -218,6 +310,13 @@
#define DR_7 7 // FSK
/*!
+ * Verification of default datarate
+ */
+#if ( LORAMAC_DEFAULT_DATARATE > DR_5 )
+#error "A default DR higher than DR_5 may lead to connectivity loss."
+#endif
+
+/*!
* Second reception window channel definition.
*/
// Channel = { Frequency [Hz], Datarate }
@@ -240,15 +339,6 @@
#define LC3 { 779900000, { ( ( DR_5 << 4 ) | DR_0 ) }, 0 }
/*!
- * LoRaMac duty cycle for the back-off procedure
- */
-#define BACKOFF_DC_1_HOUR 100
-#define BACKOFF_DC_10_HOURS 1000
-#define BACKOFF_DC_24_HOURS 10000
-
-#define BACKOFF_RND_OFFSET 600000
-
-/*!
* LoRaMac channels which are allowed for the join procedure
*/
#define JOIN_CHANNELS ( uint16_t )( LC( 1 ) | LC( 2 ) | LC( 3 ) )
@@ -333,6 +423,13 @@
#define DR_7 7 // FSK
/*!
+ * Verification of default datarate
+ */
+#if ( LORAMAC_DEFAULT_DATARATE > DR_5 )
+#error "A default DR higher than DR_5 may lead to connectivity loss."
+#endif
+
+/*!
* Second reception window channel definition.
*/
// Channel = { Frequency [Hz], Datarate }
@@ -371,15 +468,6 @@
#define LC3 { 868500000, { ( ( DR_5 << 4 ) | DR_0 ) }, 1 }
/*!
- * LoRaMac duty cycle for the back-off procedure
- */
-#define BACKOFF_DC_1_HOUR 100
-#define BACKOFF_DC_10_HOURS 1000
-#define BACKOFF_DC_24_HOURS 10000
-
-#define BACKOFF_RND_OFFSET 600000
-
-/*!
* LoRaMac channels which are allowed for the join procedure
*/
#define JOIN_CHANNELS ( uint16_t )( LC( 1 ) | LC( 2 ) | LC( 3 ) )
@@ -490,8 +578,6 @@
// Band = { DutyCycle, TxMaxPower, LastTxDoneTime, TimeOff }
#define BAND0 { 1, TX_POWER_20_DBM, 0, 0 } // 100.0 %
-#define BACKOFF_RND_OFFSET 600000
-
/*!
* LoRaMac default channels
*/