IBM LoRa MAC in C (LMiC) mbed library port

Dependents:   lora-temperature LoRaWAN-lmic-app_HS LoRaWAN-lmic-app_huynh

LoRa WAN in C for sx1276 shield

Currently version 1.5


LoRaWAN network configuration for end-device

The following three pieces of information uniquely identifies end-device to network to allow over-the-air activation. These are stored in the end-device prior to join procedure.

AppEUI

Uniquely identifies application provider of end-device.

Least-significant byte first, 8 bytes, use reverse memcpy() to keep same order as shown on lora server.

example C code

static const u1_t APPEUI[8]  = { 0x01, 0x00, 0x01, 0x00, 0x00, 0x0C, 0x25, 0x00 };

This is copied into LMIC by os_getArtEui() callback function in application.

DevEUI

End-device ID, unique to each end-node.

Least-significant byte first, 8 bytes, use reverse memcpy() to keep same order as shown on lora server.

example C code

static const u1_t DEVEUI[8]  = { 0x00, 0x00, 0x00, 0x00, 0x01, 0x0C, 0x25, 0x00 }; 

This is copied into LMIC by os_getDevEui() callback function in application.

AppKey (aka DevKey)

128-bit (16byte) AES key.

example C code

static const u1_t DEVKEY[16] = { 0xe4, 0x72, 0x71, 0xc5, 0xf5, 0x30, 0xa9, 0x9f, 0xcf, 0xc4, 0x0e, 0xab, 0xea, 0xd7, 0x19, 0x42 };

This is copied into LMIC by os_getDevKey() callback function in application.

Using over-the air activation, the end-device (LMIC) performs a join procedure every time it starts for first time, or has lost session context information. When join procedure has successfully completed, the end-device will have a network session key (NwkSKey) and an application session key (AppSKey), which are used for encryption and message integrity check.


US915 configuration with http://us01-iot.semtech.com/

  • log in to server
  • click on Applications
  • find your application and click it
  • go to configure motes
  • to create a mote, you may enter a new DevEUI
    • you may copy-paste the 16byte application key from an already existing mote, if you desire.
CHNL_HYBRID125KHz500KHz
defined valuechannelschannel
00 to 764
18 to 1565
216 to 2366
324 to 3167
432 to 3968
540 to 4769
648 to 5570
756 to 6371
undef0 to 6364 to 71
Revision:
1:d3b7bde3995c
Parent:
0:62d1edcc13d1
--- a/oslmic.h	Thu Jan 22 12:50:49 2015 +0000
+++ b/oslmic.h	Tue Mar 31 13:36:56 2015 +0000
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2014 IBM Corporation.
+ * Copyright (c) 2014-2015 IBM Corporation.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -9,6 +9,7 @@
  *    IBM Zurich Research Lab - initial API, implementation and documentation
  *******************************************************************************/
 
+//! \file
 #ifndef _oslmic_h_
 #define _oslmic_h_
 
@@ -33,12 +34,11 @@
 typedef unsigned int       uint;
 typedef const char* str_t;
 
-#define CFG_noassert 1
 #include <string.h>
 #include "hal.h"
 #define EV(a,b,c) /**/
-#define DO_DEVDB(meth,...) /**/
-#if !CFG_noassert
+#define DO_DEVDB(field1,field2) /**/
+#if !defined(CFG_noassert)
 #define ASSERT(cond) if(!(cond)) hal_failed()
 #else
 #define ASSERT(cond) /**/
@@ -49,14 +49,12 @@
 
 typedef     struct osjob_t osjob_t;
 typedef      struct band_t band_t;
-typedef      struct rxqu_t rxqu_t;
 typedef   struct chnldef_t chnldef_t;
 typedef   struct rxsched_t rxsched_t;
 typedef   struct bcninfo_t bcninfo_t;
 typedef        const u1_t* xref2cu1_t;
 typedef              u1_t* xref2u1_t;
 #define TYPEDEF_xref2rps_t     typedef         rps_t* xref2rps_t
-#define TYPEDEF_xref2rxqu_t    typedef        rxqu_t* xref2rxqu_t
 #define TYPEDEF_xref2rxsched_t typedef     rxsched_t* xref2rxsched_t
 #define TYPEDEF_xref2chnldef_t typedef     chnldef_t* xref2chnldef_t
 #define TYPEDEF_xref2band_t    typedef        band_t* xref2band_t
@@ -79,7 +77,7 @@
 #define DEFINE_LMIC  struct lmic_t LMIC
 #define DECLARE_LMIC extern struct lmic_t LMIC
 
-void radio_init(void);
+void radio_init (void);
 void radio_irq_handler (u1_t dio);
 void os_init (void);
 void os_runloop (void);
@@ -126,7 +124,7 @@
 TYPEDEF_xref2osjob_t;
 
 
-#if !HAS_os_calls
+#ifndef HAS_os_calls
 
 #ifndef os_getDevKey
 void os_getDevKey (xref2u1_t buf);