lmic_MOTE_L152RC - LMIC for MOTE_L152RC

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LMIC for MOTE_L152RC

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 LMIC_reverse_memcpy() for AppEUI to keep same byte order as that 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 LMIC_reverse_memcpy() for DevEUI to keep same byte order as that 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.

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.

Information

DevEUI is entered in reverse order into C-code from that shown on server (unique device ID).

AppEUI is entered in reverse order into C-code from that shown on server.

AppEUI is equivalent to "Application"

transmit power limits

FCC Part 15 rules permit one watt of transmit power when more than 50 channels are used. When received by a 64-channel gateway, the maximum power may be used.

However, if end-device is sending to a 8-channel gateway (single SX1301), the maximum transmit power permitted is +20dBm.

To configure LMIC for use with 8-channel gateway, CHNL_HYBRID should be defined in in config.h, and should be undefined for use with 64-channel gateway.

`CHNL_HYBRID`	125KHz	500KHz
defined value	channels	channel
0	0 to 7	64
1	8 to 15	65
2	16 to 23	66
3	24 to 31	67
4	32 to 39	68
5	40 to 47	69
6	48 to 55	70
7	56 to 63	71
undef	0 to 63	64 to 71

lmic.cpp@0:f2716e543d97, 2015-06-02 (annotated)

Committer:: dudmuck
Date:: Tue Jun 02 19:04:29 2015 +0000
Revision:: 0:f2716e543d97
Child:: 5:e4ba433f0ac1

lmic-v1.5 for MOTE_L152RC

Who changed what in which revision?

User	Revision	Line number	New contents of line
dudmuck	0:f2716e543d97	1	/*******************************************************************************
dudmuck	0:f2716e543d97	2	* Copyright (c) 2014-2015 IBM Corporation.
dudmuck	0:f2716e543d97	3	* All rights reserved. This program and the accompanying materials
dudmuck	0:f2716e543d97	4	* are made available under the terms of the Eclipse Public License v1.0
dudmuck	0:f2716e543d97	5	* which accompanies this distribution, and is available at
dudmuck	0:f2716e543d97	6	* http://www.eclipse.org/legal/epl-v10.html
dudmuck	0:f2716e543d97	7	*
dudmuck	0:f2716e543d97	8	* Contributors:
dudmuck	0:f2716e543d97	9	* IBM Zurich Research Lab - initial API, implementation and documentation
dudmuck	0:f2716e543d97	10	*******************************************************************************/
dudmuck	0:f2716e543d97	11
dudmuck	0:f2716e543d97	12	//! \file
dudmuck	0:f2716e543d97	13	#include "lmic.h"
dudmuck	0:f2716e543d97	14
dudmuck	0:f2716e543d97	15	#if !defined(MINRX_SYMS)
dudmuck	0:f2716e543d97	16	#define MINRX_SYMS 5
dudmuck	0:f2716e543d97	17	#endif // !defined(MINRX_SYMS)
dudmuck	0:f2716e543d97	18	#define PAMBL_SYMS 8
dudmuck	0:f2716e543d97	19	#define PAMBL_FSK 5
dudmuck	0:f2716e543d97	20	#define PRERX_FSK 1
dudmuck	0:f2716e543d97	21	#define RXLEN_FSK (1+5+2)
dudmuck	0:f2716e543d97	22
dudmuck	0:f2716e543d97	23	#define BCN_INTV_osticks sec2osticks(BCN_INTV_sec)
dudmuck	0:f2716e543d97	24	#define TXRX_GUARD_osticks ms2osticks(TXRX_GUARD_ms)
dudmuck	0:f2716e543d97	25	#define JOIN_GUARD_osticks ms2osticks(JOIN_GUARD_ms)
dudmuck	0:f2716e543d97	26	#define DELAY_DNW1_osticks sec2osticks(DELAY_DNW1)
dudmuck	0:f2716e543d97	27	#define DELAY_DNW2_osticks sec2osticks(DELAY_DNW2)
dudmuck	0:f2716e543d97	28	#define DELAY_JACC1_osticks sec2osticks(DELAY_JACC1)
dudmuck	0:f2716e543d97	29	#define DELAY_JACC2_osticks sec2osticks(DELAY_JACC2)
dudmuck	0:f2716e543d97	30	#define DELAY_EXTDNW2_osticks sec2osticks(DELAY_EXTDNW2)
dudmuck	0:f2716e543d97	31	#define BCN_RESERVE_osticks ms2osticks(BCN_RESERVE_ms)
dudmuck	0:f2716e543d97	32	#define BCN_GUARD_osticks ms2osticks(BCN_GUARD_ms)
dudmuck	0:f2716e543d97	33	#define BCN_WINDOW_osticks ms2osticks(BCN_WINDOW_ms)
dudmuck	0:f2716e543d97	34	#define AIRTIME_BCN_osticks us2osticks(AIRTIME_BCN)
dudmuck	0:f2716e543d97	35	#if defined(CFG_eu868)
dudmuck	0:f2716e543d97	36	#define DNW2_SAFETY_ZONE ms2osticks(3000)
dudmuck	0:f2716e543d97	37	#endif
dudmuck	0:f2716e543d97	38	#if defined(CFG_us915)
dudmuck	0:f2716e543d97	39	#define DNW2_SAFETY_ZONE ms2osticks(750)
dudmuck	0:f2716e543d97	40	#endif
dudmuck	0:f2716e543d97	41
dudmuck	0:f2716e543d97	42	// Special APIs - for development or testing
dudmuck	0:f2716e543d97	43	#define isTESTMODE() 0
dudmuck	0:f2716e543d97	44
dudmuck	0:f2716e543d97	45	DEFINE_LMIC;
dudmuck	0:f2716e543d97	46	DECL_ON_LMIC_EVENT;
dudmuck	0:f2716e543d97	47
dudmuck	0:f2716e543d97	48
dudmuck	0:f2716e543d97	49	// Fwd decls.
dudmuck	0:f2716e543d97	50	static void engineUpdate(void);
dudmuck	0:f2716e543d97	51	static void startScan (void);
dudmuck	0:f2716e543d97	52
dudmuck	0:f2716e543d97	53
dudmuck	0:f2716e543d97	54	// ================================================================================
dudmuck	0:f2716e543d97	55	// BEG OS - default implementations for certain OS suport functions
dudmuck	0:f2716e543d97	56
dudmuck	0:f2716e543d97	57	#if !defined(HAS_os_calls)
dudmuck	0:f2716e543d97	58
dudmuck	0:f2716e543d97	59	#if !defined(os_rlsbf2)
dudmuck	0:f2716e543d97	60	u2_t os_rlsbf2 (xref2cu1_t buf) {
dudmuck	0:f2716e543d97	61	return (u2_t)(buf[0] \| (buf[1]<<8));
dudmuck	0:f2716e543d97	62	}
dudmuck	0:f2716e543d97	63	#endif
dudmuck	0:f2716e543d97	64
dudmuck	0:f2716e543d97	65	#if !defined(os_rlsbf4)
dudmuck	0:f2716e543d97	66	u4_t os_rlsbf4 (xref2cu1_t buf) {
dudmuck	0:f2716e543d97	67	return (u4_t)(buf[0] \| (buf[1]<<8) \| ((u4_t)buf[2]<<16) \| ((u4_t)buf[3]<<24));
dudmuck	0:f2716e543d97	68	}
dudmuck	0:f2716e543d97	69	#endif
dudmuck	0:f2716e543d97	70
dudmuck	0:f2716e543d97	71
dudmuck	0:f2716e543d97	72	#if !defined(os_rmsbf4)
dudmuck	0:f2716e543d97	73	u4_t os_rmsbf4 (xref2cu1_t buf) {
dudmuck	0:f2716e543d97	74	return (u4_t)(buf[3] \| (buf[2]<<8) \| ((u4_t)buf[1]<<16) \| ((u4_t)buf[0]<<24));
dudmuck	0:f2716e543d97	75	}
dudmuck	0:f2716e543d97	76	#endif
dudmuck	0:f2716e543d97	77
dudmuck	0:f2716e543d97	78
dudmuck	0:f2716e543d97	79	#if !defined(os_wlsbf2)
dudmuck	0:f2716e543d97	80	void os_wlsbf2 (xref2u1_t buf, u2_t v) {
dudmuck	0:f2716e543d97	81	buf[0] = v;
dudmuck	0:f2716e543d97	82	buf[1] = v>>8;
dudmuck	0:f2716e543d97	83	}
dudmuck	0:f2716e543d97	84	#endif
dudmuck	0:f2716e543d97	85
dudmuck	0:f2716e543d97	86	#if !defined(os_wlsbf4)
dudmuck	0:f2716e543d97	87	void os_wlsbf4 (xref2u1_t buf, u4_t v) {
dudmuck	0:f2716e543d97	88	buf[0] = v;
dudmuck	0:f2716e543d97	89	buf[1] = v>>8;
dudmuck	0:f2716e543d97	90	buf[2] = v>>16;
dudmuck	0:f2716e543d97	91	buf[3] = v>>24;
dudmuck	0:f2716e543d97	92	}
dudmuck	0:f2716e543d97	93	#endif
dudmuck	0:f2716e543d97	94
dudmuck	0:f2716e543d97	95	#if !defined(os_wmsbf4)
dudmuck	0:f2716e543d97	96	void os_wmsbf4 (xref2u1_t buf, u4_t v) {
dudmuck	0:f2716e543d97	97	buf[3] = v;
dudmuck	0:f2716e543d97	98	buf[2] = v>>8;
dudmuck	0:f2716e543d97	99	buf[1] = v>>16;
dudmuck	0:f2716e543d97	100	buf[0] = v>>24;
dudmuck	0:f2716e543d97	101	}
dudmuck	0:f2716e543d97	102	#endif
dudmuck	0:f2716e543d97	103
dudmuck	0:f2716e543d97	104	#if !defined(os_getBattLevel)
dudmuck	0:f2716e543d97	105	u1_t os_getBattLevel (void) {
dudmuck	0:f2716e543d97	106	return MCMD_DEVS_BATT_NOINFO;
dudmuck	0:f2716e543d97	107	}
dudmuck	0:f2716e543d97	108	#endif
dudmuck	0:f2716e543d97	109
dudmuck	0:f2716e543d97	110	#if !defined(os_crc16)
dudmuck	0:f2716e543d97	111	// New CRC-16 CCITT(XMODEM) checksum for beacons:
dudmuck	0:f2716e543d97	112	u2_t os_crc16 (xref2u1_t data, uint len) {
dudmuck	0:f2716e543d97	113	u2_t remainder = 0;
dudmuck	0:f2716e543d97	114	u2_t polynomial = 0x1021;
dudmuck	0:f2716e543d97	115	for( uint i = 0; i < len; i++ ) {
dudmuck	0:f2716e543d97	116	remainder ^= data[i] << 8;
dudmuck	0:f2716e543d97	117	for( u1_t bit = 8; bit > 0; bit--) {
dudmuck	0:f2716e543d97	118	if( (remainder & 0x8000) )
dudmuck	0:f2716e543d97	119	remainder = (remainder << 1) ^ polynomial;
dudmuck	0:f2716e543d97	120	else
dudmuck	0:f2716e543d97	121	remainder <<= 1;
dudmuck	0:f2716e543d97	122	}
dudmuck	0:f2716e543d97	123	}
dudmuck	0:f2716e543d97	124	return remainder;
dudmuck	0:f2716e543d97	125	}
dudmuck	0:f2716e543d97	126	#endif
dudmuck	0:f2716e543d97	127
dudmuck	0:f2716e543d97	128	#endif // !HAS_os_calls
dudmuck	0:f2716e543d97	129
dudmuck	0:f2716e543d97	130	// END OS - default implementations for certain OS suport functions
dudmuck	0:f2716e543d97	131	// ================================================================================
dudmuck	0:f2716e543d97	132
dudmuck	0:f2716e543d97	133	// ================================================================================
dudmuck	0:f2716e543d97	134	// BEG AES
dudmuck	0:f2716e543d97	135
dudmuck	0:f2716e543d97	136	static void micB0 (u4_t devaddr, u4_t seqno, int dndir, int len) {
dudmuck	0:f2716e543d97	137	os_clearMem(AESaux,16);
dudmuck	0:f2716e543d97	138	AESaux[0] = 0x49;
dudmuck	0:f2716e543d97	139	AESaux[5] = dndir?1:0;
dudmuck	0:f2716e543d97	140	AESaux[15] = len;
dudmuck	0:f2716e543d97	141	os_wlsbf4(AESaux+ 6,devaddr);
dudmuck	0:f2716e543d97	142	os_wlsbf4(AESaux+10,seqno);
dudmuck	0:f2716e543d97	143	}
dudmuck	0:f2716e543d97	144
dudmuck	0:f2716e543d97	145
dudmuck	0:f2716e543d97	146	static int aes_verifyMic (xref2cu1_t key, u4_t devaddr, u4_t seqno, int dndir, xref2u1_t pdu, int len) {
dudmuck	0:f2716e543d97	147	micB0(devaddr, seqno, dndir, len);
dudmuck	0:f2716e543d97	148	os_copyMem(AESkey,key,16);
dudmuck	0:f2716e543d97	149	return os_aes(AES_MIC, pdu, len) == os_rmsbf4(pdu+len);
dudmuck	0:f2716e543d97	150	}
dudmuck	0:f2716e543d97	151
dudmuck	0:f2716e543d97	152
dudmuck	0:f2716e543d97	153	static void aes_appendMic (xref2cu1_t key, u4_t devaddr, u4_t seqno, int dndir, xref2u1_t pdu, int len) {
dudmuck	0:f2716e543d97	154	micB0(devaddr, seqno, dndir, len);
dudmuck	0:f2716e543d97	155	os_copyMem(AESkey,key,16);
dudmuck	0:f2716e543d97	156	// MSB because of internal structure of AES
dudmuck	0:f2716e543d97	157	os_wmsbf4(pdu+len, os_aes(AES_MIC, pdu, len));
dudmuck	0:f2716e543d97	158	}
dudmuck	0:f2716e543d97	159
dudmuck	0:f2716e543d97	160
dudmuck	0:f2716e543d97	161	static void aes_appendMic0 (xref2u1_t pdu, int len) {
dudmuck	0:f2716e543d97	162	os_getDevKey(AESkey);
dudmuck	0:f2716e543d97	163	os_wmsbf4(pdu+len, os_aes(AES_MIC\|AES_MICNOAUX, pdu, len)); // MSB because of internal structure of AES
dudmuck	0:f2716e543d97	164	}
dudmuck	0:f2716e543d97	165
dudmuck	0:f2716e543d97	166
dudmuck	0:f2716e543d97	167	static int aes_verifyMic0 (xref2u1_t pdu, int len) {
dudmuck	0:f2716e543d97	168	os_getDevKey(AESkey);
dudmuck	0:f2716e543d97	169	return os_aes(AES_MIC\|AES_MICNOAUX, pdu, len) == os_rmsbf4(pdu+len);
dudmuck	0:f2716e543d97	170	}
dudmuck	0:f2716e543d97	171
dudmuck	0:f2716e543d97	172
dudmuck	0:f2716e543d97	173	static void aes_encrypt (xref2u1_t pdu, int len) {
dudmuck	0:f2716e543d97	174	os_getDevKey(AESkey);
dudmuck	0:f2716e543d97	175	os_aes(AES_ENC, pdu, len);
dudmuck	0:f2716e543d97	176	}
dudmuck	0:f2716e543d97	177
dudmuck	0:f2716e543d97	178
dudmuck	0:f2716e543d97	179	static void aes_cipher (xref2cu1_t key, u4_t devaddr, u4_t seqno, int dndir, xref2u1_t payload, int len) {
dudmuck	0:f2716e543d97	180	if( len <= 0 )
dudmuck	0:f2716e543d97	181	return;
dudmuck	0:f2716e543d97	182	os_clearMem(AESaux, 16);
dudmuck	0:f2716e543d97	183	AESaux[0] = AESaux[15] = 1; // mode=cipher / dir=down / block counter=1
dudmuck	0:f2716e543d97	184	AESaux[5] = dndir?1:0;
dudmuck	0:f2716e543d97	185	os_wlsbf4(AESaux+ 6,devaddr);
dudmuck	0:f2716e543d97	186	os_wlsbf4(AESaux+10,seqno);
dudmuck	0:f2716e543d97	187	os_copyMem(AESkey,key,16);
dudmuck	0:f2716e543d97	188	os_aes(AES_CTR, payload, len);
dudmuck	0:f2716e543d97	189	}
dudmuck	0:f2716e543d97	190
dudmuck	0:f2716e543d97	191
dudmuck	0:f2716e543d97	192	static void aes_sessKeys (u2_t devnonce, xref2cu1_t artnonce, xref2u1_t nwkkey, xref2u1_t artkey) {
dudmuck	0:f2716e543d97	193	os_clearMem(nwkkey, 16);
dudmuck	0:f2716e543d97	194	nwkkey[0] = 0x01;
dudmuck	0:f2716e543d97	195	os_copyMem(nwkkey+1, artnonce, LEN_ARTNONCE+LEN_NETID);
dudmuck	0:f2716e543d97	196	os_wlsbf2(nwkkey+1+LEN_ARTNONCE+LEN_NETID, devnonce);
dudmuck	0:f2716e543d97	197	os_copyMem(artkey, nwkkey, 16);
dudmuck	0:f2716e543d97	198	artkey[0] = 0x02;
dudmuck	0:f2716e543d97	199
dudmuck	0:f2716e543d97	200	os_getDevKey(AESkey);
dudmuck	0:f2716e543d97	201	os_aes(AES_ENC, nwkkey, 16);
dudmuck	0:f2716e543d97	202	os_getDevKey(AESkey);
dudmuck	0:f2716e543d97	203	os_aes(AES_ENC, artkey, 16);
dudmuck	0:f2716e543d97	204	}
dudmuck	0:f2716e543d97	205
dudmuck	0:f2716e543d97	206	// END AES
dudmuck	0:f2716e543d97	207	// ================================================================================
dudmuck	0:f2716e543d97	208
dudmuck	0:f2716e543d97	209
dudmuck	0:f2716e543d97	210	// ================================================================================
dudmuck	0:f2716e543d97	211	// BEG LORA
dudmuck	0:f2716e543d97	212
dudmuck	0:f2716e543d97	213	#if defined(CFG_eu868) // ========================================
dudmuck	0:f2716e543d97	214
dudmuck	0:f2716e543d97	215	#define maxFrameLen(dr) ((dr)<=DR_SF9 ? maxFrameLens[(dr)] : 0xFF)
dudmuck	0:f2716e543d97	216	const u1_t maxFrameLens [] = { 64,64,64,123 };
dudmuck	0:f2716e543d97	217
dudmuck	0:f2716e543d97	218	const u1_t _DR2RPS_CRC[] = {
dudmuck	0:f2716e543d97	219	ILLEGAL_RPS,
dudmuck	0:f2716e543d97	220	(u1_t)MAKERPS(SF12, BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	221	(u1_t)MAKERPS(SF11, BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	222	(u1_t)MAKERPS(SF10, BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	223	(u1_t)MAKERPS(SF9, BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	224	(u1_t)MAKERPS(SF8, BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	225	(u1_t)MAKERPS(SF7, BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	226	(u1_t)MAKERPS(SF7, BW250, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	227	(u1_t)MAKERPS(FSK, BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	228	ILLEGAL_RPS
dudmuck	0:f2716e543d97	229	};
dudmuck	0:f2716e543d97	230
dudmuck	0:f2716e543d97	231	static const s1_t TXPOWLEVELS[] = {
dudmuck	0:f2716e543d97	232	20, 14, 11, 8, 5, 2, 0,0, 0,0,0,0, 0,0,0,0
dudmuck	0:f2716e543d97	233	};
dudmuck	0:f2716e543d97	234	#define pow2dBm(mcmd_ladr_p1) (TXPOWLEVELS[(mcmd_ladr_p1&MCMD_LADR_POW_MASK)>>MCMD_LADR_POW_SHIFT])
dudmuck	0:f2716e543d97	235
dudmuck	0:f2716e543d97	236	#elif defined(CFG_us915) // ========================================
dudmuck	0:f2716e543d97	237
dudmuck	0:f2716e543d97	238	#define maxFrameLen(dr) ((dr)<=DR_SF11CR ? maxFrameLens[(dr)] : 0xFF)
dudmuck	0:f2716e543d97	239	//const u1_t maxFrameLens [] = { 24,66,142,255,255,255,255,255, 66,142 };
dudmuck	0:f2716e543d97	240
dudmuck	0:f2716e543d97	241	const u1_t _DR2RPS_CRC[] = {
dudmuck	0:f2716e543d97	242	ILLEGAL_RPS,
dudmuck	0:f2716e543d97	243	MAKERPS(SF10, BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	244	MAKERPS(SF9 , BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	245	MAKERPS(SF8 , BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	246	MAKERPS(SF7 , BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	247	MAKERPS(SF8 , BW500, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	248	ILLEGAL_RPS ,
dudmuck	0:f2716e543d97	249	ILLEGAL_RPS ,
dudmuck	0:f2716e543d97	250	ILLEGAL_RPS ,
dudmuck	0:f2716e543d97	251	MAKERPS(SF12, BW500, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	252	MAKERPS(SF11, BW500, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	253	MAKERPS(SF10, BW500, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	254	MAKERPS(SF9 , BW500, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	255	MAKERPS(SF8 , BW500, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	256	MAKERPS(SF7 , BW500, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	257	ILLEGAL_RPS
dudmuck	0:f2716e543d97	258	};
dudmuck	0:f2716e543d97	259
dudmuck	0:f2716e543d97	260	#define pow2dBm(mcmd_ladr_p1) ((s1_t)(30 - (((mcmd_ladr_p1)&MCMD_LADR_POW_MASK)<<1)))
dudmuck	0:f2716e543d97	261
dudmuck	0:f2716e543d97	262	#endif // ================================================
dudmuck	0:f2716e543d97	263
dudmuck	0:f2716e543d97	264	static const u1_t SENSITIVITY[7][3] = {
dudmuck	0:f2716e543d97	265	// ------------bw----------
dudmuck	0:f2716e543d97	266	// 125kHz 250kHz 500kHz
dudmuck	0:f2716e543d97	267	{ 141-109, 141-109, 141-109 }, // FSK
dudmuck	0:f2716e543d97	268	{ 141-127, 141-124, 141-121 }, // SF7
dudmuck	0:f2716e543d97	269	{ 141-129, 141-126, 141-123 }, // SF8
dudmuck	0:f2716e543d97	270	{ 141-132, 141-129, 141-126 }, // SF9
dudmuck	0:f2716e543d97	271	{ 141-135, 141-132, 141-129 }, // SF10
dudmuck	0:f2716e543d97	272	{ 141-138, 141-135, 141-132 }, // SF11
dudmuck	0:f2716e543d97	273	{ 141-141, 141-138, 141-135 } // SF12
dudmuck	0:f2716e543d97	274	};
dudmuck	0:f2716e543d97	275
dudmuck	0:f2716e543d97	276	int getSensitivity (rps_t rps) {
dudmuck	0:f2716e543d97	277	return -141 + SENSITIVITY[getSf(rps)][getBw(rps)];
dudmuck	0:f2716e543d97	278	}
dudmuck	0:f2716e543d97	279
dudmuck	0:f2716e543d97	280	ostime_t calcAirTime (rps_t rps, u1_t plen) {
dudmuck	0:f2716e543d97	281	u1_t bw = getBw(rps); // 0,1,2 = 125,250,500kHz
dudmuck	0:f2716e543d97	282	u1_t sf = getSf(rps); // 0=FSK, 1..6 = SF7..12
dudmuck	0:f2716e543d97	283	if( sf == FSK ) {
dudmuck	0:f2716e543d97	284	return (plen+/preamble/5+/syncword/3+/len/1+/crc/2) * /bits/byte/8
dudmuck	0:f2716e543d97	285	* (s4_t)OSTICKS_PER_SEC / /kbit/s/50000;
dudmuck	0:f2716e543d97	286	}
dudmuck	0:f2716e543d97	287	u1_t sfx = 4*(sf+(7-SF7));
dudmuck	0:f2716e543d97	288	u1_t q = sfx - (sf >= SF11 ? 8 : 0);
dudmuck	0:f2716e543d97	289	int tmp = 8*plen - sfx + 28 + (getNocrc(rps)?0:16) - (getIh(rps)?20:0);
dudmuck	0:f2716e543d97	290	if( tmp > 0 ) {
dudmuck	0:f2716e543d97	291	tmp = (tmp + q - 1) / q;
dudmuck	0:f2716e543d97	292	tmp *= getCr(rps)+5;
dudmuck	0:f2716e543d97	293	tmp += 8;
dudmuck	0:f2716e543d97	294	} else {
dudmuck	0:f2716e543d97	295	tmp = 8;
dudmuck	0:f2716e543d97	296	}
dudmuck	0:f2716e543d97	297	tmp = (tmp<<2) + /preamble/49 /* 4 * (8 + 4.25) */;
dudmuck	0:f2716e543d97	298	// bw = 125000 = 15625 * 2^3
dudmuck	0:f2716e543d97	299	// 250000 = 15625 * 2^4
dudmuck	0:f2716e543d97	300	// 500000 = 15625 * 2^5
dudmuck	0:f2716e543d97	301	// sf = 7..12
dudmuck	0:f2716e543d97	302	//
dudmuck	0:f2716e543d97	303	// osticks = tmp * OSTICKS_PER_SEC * 1<<sf / bw
dudmuck	0:f2716e543d97	304	//
dudmuck	0:f2716e543d97	305	// 3 => counter reduced divisor 125000/8 => 15625
dudmuck	0:f2716e543d97	306	// 2 => counter 2 shift on tmp
dudmuck	0:f2716e543d97	307	sfx = sf+(7-SF7) - (3+2) - bw;
dudmuck	0:f2716e543d97	308	int div = 15625;
dudmuck	0:f2716e543d97	309	if( sfx > 4 ) {
dudmuck	0:f2716e543d97	310	// prevent 32bit signed int overflow in last step
dudmuck	0:f2716e543d97	311	div >>= sfx-4;
dudmuck	0:f2716e543d97	312	sfx = 4;
dudmuck	0:f2716e543d97	313	}
dudmuck	0:f2716e543d97	314	// Need 32bit arithmetic for this last step
dudmuck	0:f2716e543d97	315	return (((ostime_t)tmp << sfx) * OSTICKS_PER_SEC + div/2) / div;
dudmuck	0:f2716e543d97	316	}
dudmuck	0:f2716e543d97	317
dudmuck	0:f2716e543d97	318	extern inline rps_t updr2rps (dr_t dr);
dudmuck	0:f2716e543d97	319	extern inline rps_t dndr2rps (dr_t dr);
dudmuck	0:f2716e543d97	320	extern inline int isFasterDR (dr_t dr1, dr_t dr2);
dudmuck	0:f2716e543d97	321	extern inline int isSlowerDR (dr_t dr1, dr_t dr2);
dudmuck	0:f2716e543d97	322	extern inline dr_t incDR (dr_t dr);
dudmuck	0:f2716e543d97	323	extern inline dr_t decDR (dr_t dr);
dudmuck	0:f2716e543d97	324	extern inline dr_t assertDR (dr_t dr);
dudmuck	0:f2716e543d97	325	extern inline dr_t validDR (dr_t dr);
dudmuck	0:f2716e543d97	326	extern inline dr_t lowerDR (dr_t dr, u1_t n);
dudmuck	0:f2716e543d97	327
dudmuck	0:f2716e543d97	328	extern inline sf_t getSf (rps_t params);
dudmuck	0:f2716e543d97	329	extern inline rps_t setSf (rps_t params, sf_t sf);
dudmuck	0:f2716e543d97	330	extern inline bw_t getBw (rps_t params);
dudmuck	0:f2716e543d97	331	extern inline rps_t setBw (rps_t params, bw_t cr);
dudmuck	0:f2716e543d97	332	extern inline cr_t getCr (rps_t params);
dudmuck	0:f2716e543d97	333	extern inline rps_t setCr (rps_t params, cr_t cr);
dudmuck	0:f2716e543d97	334	extern inline int getNocrc (rps_t params);
dudmuck	0:f2716e543d97	335	extern inline rps_t setNocrc (rps_t params, int nocrc);
dudmuck	0:f2716e543d97	336	extern inline int getIh (rps_t params);
dudmuck	0:f2716e543d97	337	extern inline rps_t setIh (rps_t params, int ih);
dudmuck	0:f2716e543d97	338	extern inline rps_t makeRps (sf_t sf, bw_t bw, cr_t cr, int ih, int nocrc);
dudmuck	0:f2716e543d97	339	extern inline int sameSfBw (rps_t r1, rps_t r2);
dudmuck	0:f2716e543d97	340
dudmuck	0:f2716e543d97	341	// END LORA
dudmuck	0:f2716e543d97	342	// ================================================================================
dudmuck	0:f2716e543d97	343
dudmuck	0:f2716e543d97	344
dudmuck	0:f2716e543d97	345	// Adjust DR for TX retries
dudmuck	0:f2716e543d97	346	// - indexed by retry count
dudmuck	0:f2716e543d97	347	// - return steps to lower DR
dudmuck	0:f2716e543d97	348	static const u1_t DRADJUST[2+TXCONF_ATTEMPTS] = {
dudmuck	0:f2716e543d97	349	// normal frames - 1st try / no retry
dudmuck	0:f2716e543d97	350	0,
dudmuck	0:f2716e543d97	351	// confirmed frames
dudmuck	0:f2716e543d97	352	0,0,1,0,1,0,1,0,0
dudmuck	0:f2716e543d97	353	};
dudmuck	0:f2716e543d97	354
dudmuck	0:f2716e543d97	355
dudmuck	0:f2716e543d97	356	// Table below defines the size of one symbol as
dudmuck	0:f2716e543d97	357	// symtime = 256us * 2^T(sf,bw)
dudmuck	0:f2716e543d97	358	// 256us is called one symunit.
dudmuck	0:f2716e543d97	359	// SF:
dudmuck	0:f2716e543d97	360	// BW: \|__7___8___9__10__11__12
dudmuck	0:f2716e543d97	361	// 125kHz \| 2 3 4 5 6 7
dudmuck	0:f2716e543d97	362	// 250kHz \| 1 2 3 4 5 6
dudmuck	0:f2716e543d97	363	// 500kHz \| 0 1 2 3 4 5
dudmuck	0:f2716e543d97	364	//
dudmuck	0:f2716e543d97	365	// Times for half symbol per DR
dudmuck	0:f2716e543d97	366	// Per DR table to minimize rounding errors
dudmuck	0:f2716e543d97	367	static const ostime_t DR2HSYM_osticks[] = {
dudmuck	0:f2716e543d97	368	#if defined(CFG_eu868)
dudmuck	0:f2716e543d97	369	#define dr2hsym(dr) (DR2HSYM_osticks[(dr)])
dudmuck	0:f2716e543d97	370	us2osticksRound(128<<7), // DR_SF12
dudmuck	0:f2716e543d97	371	us2osticksRound(128<<6), // DR_SF11
dudmuck	0:f2716e543d97	372	us2osticksRound(128<<5), // DR_SF10
dudmuck	0:f2716e543d97	373	us2osticksRound(128<<4), // DR_SF9
dudmuck	0:f2716e543d97	374	us2osticksRound(128<<3), // DR_SF8
dudmuck	0:f2716e543d97	375	us2osticksRound(128<<2), // DR_SF7
dudmuck	0:f2716e543d97	376	us2osticksRound(128<<1), // DR_SF7B
dudmuck	0:f2716e543d97	377	us2osticksRound(80) // FSK -- not used (time for 1/2 byte)
dudmuck	0:f2716e543d97	378	#elif defined(CFG_us915)
dudmuck	0:f2716e543d97	379	#define dr2hsym(dr) (DR2HSYM_osticks[(dr)&7]) // map DR_SFnCR -> 0-6
dudmuck	0:f2716e543d97	380	us2osticksRound(128<<5), // DR_SF10 DR_SF12CR
dudmuck	0:f2716e543d97	381	us2osticksRound(128<<4), // DR_SF9 DR_SF11CR
dudmuck	0:f2716e543d97	382	us2osticksRound(128<<3), // DR_SF8 DR_SF10CR
dudmuck	0:f2716e543d97	383	us2osticksRound(128<<2), // DR_SF7 DR_SF9CR
dudmuck	0:f2716e543d97	384	us2osticksRound(128<<1), // DR_SF8C DR_SF8CR
dudmuck	0:f2716e543d97	385	us2osticksRound(128<<0) // ------ DR_SF7CR
dudmuck	0:f2716e543d97	386	#endif
dudmuck	0:f2716e543d97	387	};
dudmuck	0:f2716e543d97	388
dudmuck	0:f2716e543d97	389
dudmuck	0:f2716e543d97	390	static ostime_t calcRxWindow (u1_t secs, dr_t dr) {
dudmuck	0:f2716e543d97	391	ostime_t rxoff, err;
dudmuck	0:f2716e543d97	392	if( secs==0 ) {
dudmuck	0:f2716e543d97	393	// aka 128 secs (next becaon)
dudmuck	0:f2716e543d97	394	rxoff = LMIC.drift;
dudmuck	0:f2716e543d97	395	err = LMIC.lastDriftDiff;
dudmuck	0:f2716e543d97	396	} else {
dudmuck	0:f2716e543d97	397	// scheduled RX window within secs into current beacon period
dudmuck	0:f2716e543d97	398	rxoff = (LMIC.drift * (ostime_t)secs) >> BCN_INTV_exp;
dudmuck	0:f2716e543d97	399	err = (LMIC.lastDriftDiff * (ostime_t)secs) >> BCN_INTV_exp;
dudmuck	0:f2716e543d97	400	}
dudmuck	0:f2716e543d97	401	u1_t rxsyms = MINRX_SYMS;
dudmuck	0:f2716e543d97	402	err += (ostime_t)LMIC.maxDriftDiff * LMIC.missedBcns;
dudmuck	0:f2716e543d97	403	LMIC.rxsyms = MINRX_SYMS + (err / dr2hsym(dr));
dudmuck	0:f2716e543d97	404
dudmuck	0:f2716e543d97	405	return (rxsyms-PAMBL_SYMS) * dr2hsym(dr) + rxoff;
dudmuck	0:f2716e543d97	406	}
dudmuck	0:f2716e543d97	407
dudmuck	0:f2716e543d97	408
dudmuck	0:f2716e543d97	409	// Setup beacon RX parameters assuming we have an error of ms (aka +/-(ms/2))
dudmuck	0:f2716e543d97	410	static void calcBcnRxWindowFromMillis (u1_t ms, bit_t ini) {
dudmuck	0:f2716e543d97	411	if( ini ) {
dudmuck	0:f2716e543d97	412	LMIC.drift = 0;
dudmuck	0:f2716e543d97	413	LMIC.maxDriftDiff = 0;
dudmuck	0:f2716e543d97	414	LMIC.missedBcns = 0;
dudmuck	0:f2716e543d97	415	LMIC.bcninfo.flags \|= BCN_NODRIFT\|BCN_NODDIFF;
dudmuck	0:f2716e543d97	416	}
dudmuck	0:f2716e543d97	417	ostime_t hsym = dr2hsym(DR_BCN);
dudmuck	0:f2716e543d97	418	LMIC.bcnRxsyms = MINRX_SYMS + ms2osticksCeil(ms) / hsym;
dudmuck	0:f2716e543d97	419	LMIC.bcnRxtime = LMIC.bcninfo.txtime + BCN_INTV_osticks - (LMIC.bcnRxsyms-PAMBL_SYMS) * hsym;
dudmuck	0:f2716e543d97	420	}
dudmuck	0:f2716e543d97	421
dudmuck	0:f2716e543d97	422
dudmuck	0:f2716e543d97	423	// Setup scheduled RX window (ping/multicast slot)
dudmuck	0:f2716e543d97	424	static void rxschedInit (xref2rxsched_t rxsched) {
dudmuck	0:f2716e543d97	425	os_clearMem(AESkey,16);
dudmuck	0:f2716e543d97	426	os_clearMem(LMIC.frame+8,8);
dudmuck	0:f2716e543d97	427	os_wlsbf4(LMIC.frame, LMIC.bcninfo.time);
dudmuck	0:f2716e543d97	428	os_wlsbf4(LMIC.frame+4, LMIC.devaddr);
dudmuck	0:f2716e543d97	429	os_aes(AES_ENC,LMIC.frame,16);
dudmuck	0:f2716e543d97	430	u1_t intvExp = rxsched->intvExp;
dudmuck	0:f2716e543d97	431	ostime_t off = os_rlsbf2(LMIC.frame) & (0x0FFF >> (7 - intvExp)); // random offset (slot units)
dudmuck	0:f2716e543d97	432	rxsched->rxbase = (LMIC.bcninfo.txtime +
dudmuck	0:f2716e543d97	433	BCN_RESERVE_osticks +
dudmuck	0:f2716e543d97	434	ms2osticks(BCN_SLOT_SPAN_ms * off)); // random offset osticks
dudmuck	0:f2716e543d97	435	rxsched->slot = 0;
dudmuck	0:f2716e543d97	436	rxsched->rxtime = rxsched->rxbase - calcRxWindow(/secs BCN_RESERVE/2+(1<<intvExp),rxsched->dr);
dudmuck	0:f2716e543d97	437	rxsched->rxsyms = LMIC.rxsyms;
dudmuck	0:f2716e543d97	438	}
dudmuck	0:f2716e543d97	439
dudmuck	0:f2716e543d97	440
dudmuck	0:f2716e543d97	441	static bit_t rxschedNext (xref2rxsched_t rxsched, ostime_t cando) {
dudmuck	0:f2716e543d97	442	again:
dudmuck	0:f2716e543d97	443	if( rxsched->rxtime - cando >= 0 )
dudmuck	0:f2716e543d97	444	return 1;
dudmuck	0:f2716e543d97	445	u1_t slot;
dudmuck	0:f2716e543d97	446	if( (slot=rxsched->slot) >= 128 )
dudmuck	0:f2716e543d97	447	return 0;
dudmuck	0:f2716e543d97	448	u1_t intv = 1<<rxsched->intvExp;
dudmuck	0:f2716e543d97	449	if( (rxsched->slot = (slot += (intv))) >= 128 )
dudmuck	0:f2716e543d97	450	return 0;
dudmuck	0:f2716e543d97	451	rxsched->rxtime = rxsched->rxbase
dudmuck	0:f2716e543d97	452	+ ((BCN_WINDOW_osticks * (ostime_t)slot) >> BCN_INTV_exp)
dudmuck	0:f2716e543d97	453	- calcRxWindow(/secs BCN_RESERVE/2+slot+intv,rxsched->dr);
dudmuck	0:f2716e543d97	454	rxsched->rxsyms = LMIC.rxsyms;
dudmuck	0:f2716e543d97	455	goto again;
dudmuck	0:f2716e543d97	456	}
dudmuck	0:f2716e543d97	457
dudmuck	0:f2716e543d97	458
dudmuck	0:f2716e543d97	459	static ostime_t rndDelay (u1_t secSpan) {
dudmuck	0:f2716e543d97	460	u2_t r = os_getRndU2();
dudmuck	0:f2716e543d97	461	ostime_t delay = r;
dudmuck	0:f2716e543d97	462	if( delay > OSTICKS_PER_SEC )
dudmuck	0:f2716e543d97	463	delay = r % (u2_t)OSTICKS_PER_SEC;
dudmuck	0:f2716e543d97	464	if( secSpan > 0 )
dudmuck	0:f2716e543d97	465	delay += ((u1_t)r % secSpan) * OSTICKS_PER_SEC;
dudmuck	0:f2716e543d97	466	return delay;
dudmuck	0:f2716e543d97	467	}
dudmuck	0:f2716e543d97	468
dudmuck	0:f2716e543d97	469
dudmuck	0:f2716e543d97	470	static void txDelay (ostime_t reftime, u1_t secSpan) {
dudmuck	0:f2716e543d97	471	reftime += rndDelay(secSpan);
dudmuck	0:f2716e543d97	472	if( LMIC.globalDutyRate == 0 \|\| (reftime - LMIC.globalDutyAvail) > 0 ) {
dudmuck	0:f2716e543d97	473	LMIC.globalDutyAvail = reftime;
dudmuck	0:f2716e543d97	474	LMIC.opmode \|= OP_RNDTX;
dudmuck	0:f2716e543d97	475	}
dudmuck	0:f2716e543d97	476	}
dudmuck	0:f2716e543d97	477
dudmuck	0:f2716e543d97	478
dudmuck	0:f2716e543d97	479	static void setDrJoin (u1_t reason, u1_t dr) {
dudmuck	0:f2716e543d97	480	EV(drChange, INFO, (e_.reason = reason,
dudmuck	0:f2716e543d97	481	e_.deveui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	482	e_.dr = dr\|DR_PAGE,
dudmuck	0:f2716e543d97	483	e_.txpow = LMIC.adrTxPow,
dudmuck	0:f2716e543d97	484	e_.prevdr = LMIC.datarate\|DR_PAGE,
dudmuck	0:f2716e543d97	485	e_.prevtxpow = LMIC.adrTxPow));
dudmuck	0:f2716e543d97	486	LMIC.datarate = dr;
dudmuck	0:f2716e543d97	487	DO_DEVDB(LMIC.datarate,datarate);
dudmuck	0:f2716e543d97	488	}
dudmuck	0:f2716e543d97	489
dudmuck	0:f2716e543d97	490
dudmuck	0:f2716e543d97	491	static void setDrTxpow (u1_t reason, u1_t dr, s1_t pow) {
dudmuck	0:f2716e543d97	492	EV(drChange, INFO, (e_.reason = reason,
dudmuck	0:f2716e543d97	493	e_.deveui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	494	e_.dr = dr\|DR_PAGE,
dudmuck	0:f2716e543d97	495	e_.txpow = pow,
dudmuck	0:f2716e543d97	496	e_.prevdr = LMIC.datarate\|DR_PAGE,
dudmuck	0:f2716e543d97	497	e_.prevtxpow = LMIC.adrTxPow));
dudmuck	0:f2716e543d97	498
dudmuck	0:f2716e543d97	499	if( pow != KEEP_TXPOW )
dudmuck	0:f2716e543d97	500	LMIC.adrTxPow = pow;
dudmuck	0:f2716e543d97	501	if( LMIC.datarate != dr ) {
dudmuck	0:f2716e543d97	502	LMIC.datarate = dr;
dudmuck	0:f2716e543d97	503	DO_DEVDB(LMIC.datarate,datarate);
dudmuck	0:f2716e543d97	504	LMIC.opmode \|= OP_NEXTCHNL;
dudmuck	0:f2716e543d97	505	}
dudmuck	0:f2716e543d97	506	}
dudmuck	0:f2716e543d97	507
dudmuck	0:f2716e543d97	508
dudmuck	0:f2716e543d97	509	void LMIC_stopPingable (void) {
dudmuck	0:f2716e543d97	510	LMIC.opmode &= ~(OP_PINGABLE\|OP_PINGINI);
dudmuck	0:f2716e543d97	511	}
dudmuck	0:f2716e543d97	512
dudmuck	0:f2716e543d97	513
dudmuck	0:f2716e543d97	514	void LMIC_setPingable (u1_t intvExp) {
dudmuck	0:f2716e543d97	515	// Change setting
dudmuck	0:f2716e543d97	516	LMIC.ping.intvExp = (intvExp & 0x7);
dudmuck	0:f2716e543d97	517	LMIC.opmode \|= OP_PINGABLE;
dudmuck	0:f2716e543d97	518	// App may call LMIC_enableTracking() explicitely before
dudmuck	0:f2716e543d97	519	// Otherwise tracking is implicitly enabled here
dudmuck	0:f2716e543d97	520	if( (LMIC.opmode & (OP_TRACK\|OP_SCAN)) == 0 && LMIC.bcninfoTries == 0 )
dudmuck	0:f2716e543d97	521	LMIC_enableTracking(0);
dudmuck	0:f2716e543d97	522	}
dudmuck	0:f2716e543d97	523
dudmuck	0:f2716e543d97	524
dudmuck	0:f2716e543d97	525	#if defined(CFG_eu868)
dudmuck	0:f2716e543d97	526	// ================================================================================
dudmuck	0:f2716e543d97	527	//
dudmuck	0:f2716e543d97	528	// BEG: EU868 related stuff
dudmuck	0:f2716e543d97	529	//
dudmuck	0:f2716e543d97	530	enum { NUM_DEFAULT_CHANNELS=6 };
dudmuck	0:f2716e543d97	531	static const u4_t iniChannelFreq[12] = {
dudmuck	0:f2716e543d97	532	// Join frequencies and duty cycle limit (0.1%)
dudmuck	0:f2716e543d97	533	EU868_F1\|BAND_MILLI, EU868_J4\|BAND_MILLI,
dudmuck	0:f2716e543d97	534	EU868_F2\|BAND_MILLI, EU868_J5\|BAND_MILLI,
dudmuck	0:f2716e543d97	535	EU868_F3\|BAND_MILLI, EU868_J6\|BAND_MILLI,
dudmuck	0:f2716e543d97	536	// Default operational frequencies
dudmuck	0:f2716e543d97	537	EU868_F1\|BAND_CENTI, EU868_F2\|BAND_CENTI, EU868_F3\|BAND_CENTI,
dudmuck	0:f2716e543d97	538	EU868_F4\|BAND_MILLI, EU868_F5\|BAND_MILLI, EU868_F6\|BAND_DECI
dudmuck	0:f2716e543d97	539	};
dudmuck	0:f2716e543d97	540
dudmuck	0:f2716e543d97	541	static void initDefaultChannels (bit_t join) {
dudmuck	0:f2716e543d97	542	os_clearMem(&LMIC.channelFreq, sizeof(LMIC.channelFreq));
dudmuck	0:f2716e543d97	543	os_clearMem(&LMIC.channelDrMap, sizeof(LMIC.channelDrMap));
dudmuck	0:f2716e543d97	544	os_clearMem(&LMIC.bands, sizeof(LMIC.bands));
dudmuck	0:f2716e543d97	545
dudmuck	0:f2716e543d97	546	LMIC.channelMap = 0x3F;
dudmuck	0:f2716e543d97	547	u1_t su = join ? 0 : 6;
dudmuck	0:f2716e543d97	548	for( u1_t fu=0; fu<6; fu++,su++ ) {
dudmuck	0:f2716e543d97	549	LMIC.channelFreq[fu] = iniChannelFreq[su];
dudmuck	0:f2716e543d97	550	LMIC.channelDrMap[fu] = DR_RANGE_MAP(DR_SF12,DR_SF7);
dudmuck	0:f2716e543d97	551	}
dudmuck	0:f2716e543d97	552	if( !join ) {
dudmuck	0:f2716e543d97	553	LMIC.channelDrMap[5] = DR_RANGE_MAP(DR_SF12,DR_SF7);
dudmuck	0:f2716e543d97	554	LMIC.channelDrMap[1] = DR_RANGE_MAP(DR_SF12,DR_FSK);
dudmuck	0:f2716e543d97	555	}
dudmuck	0:f2716e543d97	556
dudmuck	0:f2716e543d97	557	LMIC.bands[BAND_MILLI].txcap = 1000; // 0.1%
dudmuck	0:f2716e543d97	558	LMIC.bands[BAND_MILLI].txpow = 14;
dudmuck	0:f2716e543d97	559	LMIC.bands[BAND_MILLI].lastchnl = os_getRndU1() % MAX_CHANNELS;
dudmuck	0:f2716e543d97	560	LMIC.bands[BAND_CENTI].txcap = 100; // 1%
dudmuck	0:f2716e543d97	561	LMIC.bands[BAND_CENTI].txpow = 14;
dudmuck	0:f2716e543d97	562	LMIC.bands[BAND_CENTI].lastchnl = os_getRndU1() % MAX_CHANNELS;
dudmuck	0:f2716e543d97	563	LMIC.bands[BAND_DECI ].txcap = 10; // 10%
dudmuck	0:f2716e543d97	564	LMIC.bands[BAND_DECI ].txpow = 27;
dudmuck	0:f2716e543d97	565	LMIC.bands[BAND_CENTI].lastchnl = os_getRndU1() % MAX_CHANNELS;
dudmuck	0:f2716e543d97	566	LMIC.bands[BAND_MILLI].avail =
dudmuck	0:f2716e543d97	567	LMIC.bands[BAND_CENTI].avail =
dudmuck	0:f2716e543d97	568	LMIC.bands[BAND_DECI ].avail = os_getTime();
dudmuck	0:f2716e543d97	569	}
dudmuck	0:f2716e543d97	570
dudmuck	0:f2716e543d97	571	bit_t LMIC_setupBand (u1_t bandidx, s1_t txpow, u2_t txcap) {
dudmuck	0:f2716e543d97	572	if( bandidx > BAND_AUX ) return 0;
dudmuck	0:f2716e543d97	573	band_t* b = &LMIC.bands[bandidx];
dudmuck	0:f2716e543d97	574	b->txpow = txpow;
dudmuck	0:f2716e543d97	575	b->txcap = txcap;
dudmuck	0:f2716e543d97	576	b->avail = os_getTime();
dudmuck	0:f2716e543d97	577	b->lastchnl = os_getRndU1() % MAX_CHANNELS;
dudmuck	0:f2716e543d97	578	return 1;
dudmuck	0:f2716e543d97	579	}
dudmuck	0:f2716e543d97	580
dudmuck	0:f2716e543d97	581	bit_t LMIC_setupChannel (u1_t chidx, u4_t freq, u2_t drmap, s1_t band) {
dudmuck	0:f2716e543d97	582	if( chidx >= MAX_CHANNELS )
dudmuck	0:f2716e543d97	583	return 0;
dudmuck	0:f2716e543d97	584	if( band == -1 ) {
dudmuck	0:f2716e543d97	585	if( freq >= 869400000 && freq <= 869650000 )
dudmuck	0:f2716e543d97	586	freq \|= BAND_DECI; // 10% 27dBm
dudmuck	0:f2716e543d97	587	else if( (freq >= 868000000 && freq <= 868600000) \|\|
dudmuck	0:f2716e543d97	588	(freq >= 869700000 && freq <= 870000000) )
dudmuck	0:f2716e543d97	589	freq \|= BAND_CENTI; // 1% 14dBm
dudmuck	0:f2716e543d97	590	else
dudmuck	0:f2716e543d97	591	freq \|= BAND_MILLI; // 0.1% 14dBm
dudmuck	0:f2716e543d97	592	} else {
dudmuck	0:f2716e543d97	593	if( band > BAND_AUX ) return 0;
dudmuck	0:f2716e543d97	594	freq = (freq&~3) \| band;
dudmuck	0:f2716e543d97	595	}
dudmuck	0:f2716e543d97	596	LMIC.channelFreq [chidx] = freq;
dudmuck	0:f2716e543d97	597	LMIC.channelDrMap[chidx] = drmap==0 ? DR_RANGE_MAP(DR_SF12,DR_SF7) : drmap;
dudmuck	0:f2716e543d97	598	LMIC.channelMap \|= 1<<chidx; // enabled right away
dudmuck	0:f2716e543d97	599	return 1;
dudmuck	0:f2716e543d97	600	}
dudmuck	0:f2716e543d97	601
dudmuck	0:f2716e543d97	602	void LMIC_disableChannel (u1_t channel) {
dudmuck	0:f2716e543d97	603	LMIC.channelFreq[channel] = 0;
dudmuck	0:f2716e543d97	604	LMIC.channelDrMap[channel] = 0;
dudmuck	0:f2716e543d97	605	LMIC.channelMap &= ~(1<<channel);
dudmuck	0:f2716e543d97	606	}
dudmuck	0:f2716e543d97	607
dudmuck	0:f2716e543d97	608	static u4_t convFreq (xref2u1_t ptr) {
dudmuck	0:f2716e543d97	609	u4_t freq = (os_rlsbf4(ptr-1) >> 8) * 100;
dudmuck	0:f2716e543d97	610	if( freq < EU868_FREQ_MIN \|\| freq > EU868_FREQ_MAX )
dudmuck	0:f2716e543d97	611	freq = 0;
dudmuck	0:f2716e543d97	612	return freq;
dudmuck	0:f2716e543d97	613	}
dudmuck	0:f2716e543d97	614
dudmuck	0:f2716e543d97	615	static u1_t mapChannels (u1_t chpage, u2_t chmap) {
dudmuck	0:f2716e543d97	616	// Bad page, disable all channel, enable non-existent
dudmuck	0:f2716e543d97	617	if( chpage != 0 \|\| chmap==0 \|\| (chmap & ~LMIC.channelMap) != 0 )
dudmuck	0:f2716e543d97	618	return 0; // illegal input
dudmuck	0:f2716e543d97	619	for( u1_t chnl=0; chnl<MAX_CHANNELS; chnl++ ) {
dudmuck	0:f2716e543d97	620	if( (chmap & (1<<chnl)) != 0 && LMIC.channelFreq[chnl] == 0 )
dudmuck	0:f2716e543d97	621	chmap &= ~(1<<chnl); // ignore - channel is not defined
dudmuck	0:f2716e543d97	622	}
dudmuck	0:f2716e543d97	623	LMIC.channelMap = chmap;
dudmuck	0:f2716e543d97	624	return 1;
dudmuck	0:f2716e543d97	625	}
dudmuck	0:f2716e543d97	626
dudmuck	0:f2716e543d97	627
dudmuck	0:f2716e543d97	628	static void updateTx (ostime_t txbeg) {
dudmuck	0:f2716e543d97	629	u4_t freq = LMIC.channelFreq[LMIC.txChnl];
dudmuck	0:f2716e543d97	630	// Update global/band specific duty cycle stats
dudmuck	0:f2716e543d97	631	ostime_t airtime = calcAirTime(LMIC.rps, LMIC.dataLen);
dudmuck	0:f2716e543d97	632	// Update channel/global duty cycle stats
dudmuck	0:f2716e543d97	633	xref2band_t band = &LMIC.bands[freq & 0x3];
dudmuck	0:f2716e543d97	634	LMIC.freq = freq & ~(u4_t)3;
dudmuck	0:f2716e543d97	635	LMIC.txpow = band->txpow;
dudmuck	0:f2716e543d97	636	band->avail = txbeg + airtime * band->txcap;
dudmuck	0:f2716e543d97	637	if( LMIC.globalDutyRate != 0 )
dudmuck	0:f2716e543d97	638	LMIC.globalDutyAvail = txbeg + (airtime<<LMIC.globalDutyRate);
dudmuck	0:f2716e543d97	639	}
dudmuck	0:f2716e543d97	640
dudmuck	0:f2716e543d97	641	static ostime_t nextTx (ostime_t now) {
dudmuck	0:f2716e543d97	642	u1_t bmap=0xF;
dudmuck	0:f2716e543d97	643	do {
dudmuck	0:f2716e543d97	644	ostime_t mintime = now + /10h/36000*OSTICKS_PER_SEC;
dudmuck	0:f2716e543d97	645	u1_t band=0;
dudmuck	0:f2716e543d97	646	for( u1_t bi=0; bi<4; bi++ ) {
dudmuck	0:f2716e543d97	647	if( (bmap & (1<<bi)) && mintime - LMIC.bands[bi].avail > 0 )
dudmuck	0:f2716e543d97	648	mintime = LMIC.bands[band = bi].avail;
dudmuck	0:f2716e543d97	649	}
dudmuck	0:f2716e543d97	650	// Find next channel in given band
dudmuck	0:f2716e543d97	651	u1_t chnl = LMIC.bands[band].lastchnl;
dudmuck	0:f2716e543d97	652	for( u1_t ci=0; ci<MAX_CHANNELS; ci++ ) {
dudmuck	0:f2716e543d97	653	if( (chnl = (chnl+1)) >= MAX_CHANNELS )
dudmuck	0:f2716e543d97	654	chnl -= MAX_CHANNELS;
dudmuck	0:f2716e543d97	655	if( (LMIC.channelMap & (1<<chnl)) != 0 && // channel enabled
dudmuck	0:f2716e543d97	656	(LMIC.channelDrMap[chnl] & (1<<(LMIC.datarate&0xF))) != 0 &&
dudmuck	0:f2716e543d97	657	band == (LMIC.channelFreq[chnl] & 0x3) ) { // in selected band
dudmuck	0:f2716e543d97	658	LMIC.txChnl = LMIC.bands[band].lastchnl = chnl;
dudmuck	0:f2716e543d97	659	return mintime;
dudmuck	0:f2716e543d97	660	}
dudmuck	0:f2716e543d97	661	}
dudmuck	0:f2716e543d97	662	if( (bmap &= ~(1<<band)) == 0 ) {
dudmuck	0:f2716e543d97	663	// No feasible channel found!
dudmuck	0:f2716e543d97	664	return mintime;
dudmuck	0:f2716e543d97	665	}
dudmuck	0:f2716e543d97	666	} while(1);
dudmuck	0:f2716e543d97	667	}
dudmuck	0:f2716e543d97	668
dudmuck	0:f2716e543d97	669
dudmuck	0:f2716e543d97	670	static void setBcnRxParams (void) {
dudmuck	0:f2716e543d97	671	LMIC.dataLen = 0;
dudmuck	0:f2716e543d97	672	LMIC.freq = LMIC.channelFreq[LMIC.bcnChnl] & ~(u4_t)3;
dudmuck	0:f2716e543d97	673	LMIC.rps = setIh(setNocrc(dndr2rps((dr_t)DR_BCN),1),LEN_BCN);
dudmuck	0:f2716e543d97	674	}
dudmuck	0:f2716e543d97	675
dudmuck	0:f2716e543d97	676	#define setRx1Params() /LMIC.freq/rps remain unchanged/
dudmuck	0:f2716e543d97	677
dudmuck	0:f2716e543d97	678	static void initJoinLoop (void) {
dudmuck	0:f2716e543d97	679	LMIC.txChnl = os_getRndU1() % 6;
dudmuck	0:f2716e543d97	680	LMIC.adrTxPow = 14;
dudmuck	0:f2716e543d97	681	setDrJoin(DRCHG_SET, DR_SF7);
dudmuck	0:f2716e543d97	682	initDefaultChannels(1);
dudmuck	0:f2716e543d97	683	ASSERT((LMIC.opmode & OP_NEXTCHNL)==0);
dudmuck	0:f2716e543d97	684	LMIC.txend = LMIC.bands[BAND_MILLI].avail + rndDelay(8);
dudmuck	0:f2716e543d97	685	}
dudmuck	0:f2716e543d97	686
dudmuck	0:f2716e543d97	687
dudmuck	0:f2716e543d97	688	static ostime_t nextJoinState (void) {
dudmuck	0:f2716e543d97	689	u1_t failed = 0;
dudmuck	0:f2716e543d97	690
dudmuck	0:f2716e543d97	691	// Try 869.x and then 864.x with same DR
dudmuck	0:f2716e543d97	692	// If both fail try next lower datarate
dudmuck	0:f2716e543d97	693	if( ++LMIC.txChnl == 6 )
dudmuck	0:f2716e543d97	694	LMIC.txChnl = 0;
dudmuck	0:f2716e543d97	695	if( (++LMIC.txCnt & 1) == 0 ) {
dudmuck	0:f2716e543d97	696	// Lower DR every 2nd try (having tried 868.x and 864.x with the same DR)
dudmuck	0:f2716e543d97	697	if( LMIC.datarate == DR_SF12 )
dudmuck	0:f2716e543d97	698	failed = 1; // we have tried all DR - signal EV_JOIN_FAILED
dudmuck	0:f2716e543d97	699	else
dudmuck	0:f2716e543d97	700	setDrJoin(DRCHG_NOJACC, decDR((dr_t)LMIC.datarate));
dudmuck	0:f2716e543d97	701	}
dudmuck	0:f2716e543d97	702	// Clear NEXTCHNL because join state engine controls channel hopping
dudmuck	0:f2716e543d97	703	LMIC.opmode &= ~OP_NEXTCHNL;
dudmuck	0:f2716e543d97	704	// Move txend to randomize synchronized concurrent joins.
dudmuck	0:f2716e543d97	705	// Duty cycle is based on txend.
dudmuck	0:f2716e543d97	706	ostime_t time = os_getTime();
dudmuck	0:f2716e543d97	707	if( time - LMIC.bands[BAND_MILLI].avail < 0 )
dudmuck	0:f2716e543d97	708	time = LMIC.bands[BAND_MILLI].avail;
dudmuck	0:f2716e543d97	709	LMIC.txend = time +
dudmuck	0:f2716e543d97	710	(isTESTMODE()
dudmuck	0:f2716e543d97	711	// Avoid collision with JOIN ACCEPT @ SF12 being sent by GW (but we missed it)
dudmuck	0:f2716e543d97	712	? DNW2_SAFETY_ZONE
dudmuck	0:f2716e543d97	713	// Otherwise: randomize join (street lamp case):
dudmuck	0:f2716e543d97	714	// SF12:255, SF11:127, .., SF7:8secs
dudmuck	0:f2716e543d97	715	: DNW2_SAFETY_ZONE+rndDelay(255>>LMIC.datarate));
dudmuck	0:f2716e543d97	716	// 1 - triggers EV_JOIN_FAILED event
dudmuck	0:f2716e543d97	717	return failed;
dudmuck	0:f2716e543d97	718	}
dudmuck	0:f2716e543d97	719
dudmuck	0:f2716e543d97	720	//
dudmuck	0:f2716e543d97	721	// END: EU868 related stuff
dudmuck	0:f2716e543d97	722	//
dudmuck	0:f2716e543d97	723	// ================================================================================
dudmuck	0:f2716e543d97	724	#elif defined(CFG_us915)
dudmuck	0:f2716e543d97	725	// ================================================================================
dudmuck	0:f2716e543d97	726	//
dudmuck	0:f2716e543d97	727	// BEG: US915 related stuff
dudmuck	0:f2716e543d97	728	//
dudmuck	0:f2716e543d97	729
dudmuck	0:f2716e543d97	730
dudmuck	0:f2716e543d97	731	static void initDefaultChannels (void) {
dudmuck	0:f2716e543d97	732	for( u1_t i=0; i<4; i++ )
dudmuck	0:f2716e543d97	733	LMIC.channelMap[i] = 0xFFFF;
dudmuck	0:f2716e543d97	734	LMIC.channelMap[4] = 0x00FF;
dudmuck	0:f2716e543d97	735	}
dudmuck	0:f2716e543d97	736
dudmuck	0:f2716e543d97	737	static u4_t convFreq (xref2u1_t ptr) {
dudmuck	0:f2716e543d97	738	u4_t freq = (os_rlsbf4(ptr-1) >> 8) * 100;
dudmuck	0:f2716e543d97	739	if( freq < US915_FREQ_MIN \|\| freq > US915_FREQ_MAX )
dudmuck	0:f2716e543d97	740	freq = 0;
dudmuck	0:f2716e543d97	741	return freq;
dudmuck	0:f2716e543d97	742	}
dudmuck	0:f2716e543d97	743
dudmuck	0:f2716e543d97	744	bit_t LMIC_setupChannel (u1_t chidx, u4_t freq, u2_t drmap, s1_t band) {
dudmuck	0:f2716e543d97	745	if( chidx < 72 \|\| chidx >= 72+MAX_XCHANNELS )
dudmuck	0:f2716e543d97	746	return 0; // channels 0..71 are hardwired
dudmuck	0:f2716e543d97	747	chidx -= 72;
dudmuck	0:f2716e543d97	748	LMIC.xchFreq[chidx] = freq;
dudmuck	0:f2716e543d97	749	LMIC.xchDrMap[chidx] = drmap==0 ? DR_RANGE_MAP(DR_SF10,DR_SF8C) : drmap;
dudmuck	0:f2716e543d97	750	LMIC.channelMap[chidx>>4] \|= (1<<(chidx&0xF));
dudmuck	0:f2716e543d97	751	return 1;
dudmuck	0:f2716e543d97	752	}
dudmuck	0:f2716e543d97	753
dudmuck	0:f2716e543d97	754	void LMIC_disableChannel (u1_t channel) {
dudmuck	0:f2716e543d97	755	if( channel < 72+MAX_XCHANNELS )
dudmuck	0:f2716e543d97	756	LMIC.channelMap[channel/4] &= ~(1<<(channel&0xF));
dudmuck	0:f2716e543d97	757	}
dudmuck	0:f2716e543d97	758
dudmuck	0:f2716e543d97	759	static u1_t mapChannels (u1_t chpage, u2_t chmap) {
dudmuck	0:f2716e543d97	760	if( chpage == MCMD_LADR_CHP_125ON \|\| chpage == MCMD_LADR_CHP_125OFF ) {
dudmuck	0:f2716e543d97	761	u2_t en125 = chpage == MCMD_LADR_CHP_125ON ? 0xFFFF : 0x0000;
dudmuck	0:f2716e543d97	762	for( u1_t u=0; u<4; u++ )
dudmuck	0:f2716e543d97	763	LMIC.channelMap[u] = en125;
dudmuck	0:f2716e543d97	764	LMIC.channelMap[64/16] = chmap;
dudmuck	0:f2716e543d97	765	} else {
dudmuck	0:f2716e543d97	766	if( chpage >= (72+MAX_XCHANNELS+15)/16 )
dudmuck	0:f2716e543d97	767	return 0;
dudmuck	0:f2716e543d97	768	LMIC.channelMap[chpage] = chmap;
dudmuck	0:f2716e543d97	769	}
dudmuck	0:f2716e543d97	770	return 1;
dudmuck	0:f2716e543d97	771	}
dudmuck	0:f2716e543d97	772
dudmuck	0:f2716e543d97	773	static void updateTx (ostime_t txbeg) {
dudmuck	0:f2716e543d97	774	u1_t chnl = LMIC.txChnl;
dudmuck	0:f2716e543d97	775	if( chnl < 64 ) {
dudmuck	0:f2716e543d97	776	LMIC.freq = US915_125kHz_UPFBASE + chnl*US915_125kHz_UPFSTEP;
dudmuck	0:f2716e543d97	777	LMIC.txpow = 30;
dudmuck	0:f2716e543d97	778	return;
dudmuck	0:f2716e543d97	779	}
dudmuck	0:f2716e543d97	780	LMIC.txpow = 26;
dudmuck	0:f2716e543d97	781	if( chnl < 64+8 ) {
dudmuck	0:f2716e543d97	782	LMIC.freq = US915_500kHz_UPFBASE + (chnl-64)*US915_500kHz_UPFSTEP;
dudmuck	0:f2716e543d97	783	} else {
dudmuck	0:f2716e543d97	784	ASSERT(chnl < 64+8+MAX_XCHANNELS);
dudmuck	0:f2716e543d97	785	LMIC.freq = LMIC.xchFreq[chnl-72];
dudmuck	0:f2716e543d97	786	}
dudmuck	0:f2716e543d97	787
dudmuck	0:f2716e543d97	788	// Update global duty cycle stats
dudmuck	0:f2716e543d97	789	if( LMIC.globalDutyRate != 0 ) {
dudmuck	0:f2716e543d97	790	ostime_t airtime = calcAirTime(LMIC.rps, LMIC.dataLen);
dudmuck	0:f2716e543d97	791	LMIC.globalDutyAvail = txbeg + (airtime<<LMIC.globalDutyRate);
dudmuck	0:f2716e543d97	792	}
dudmuck	0:f2716e543d97	793	}
dudmuck	0:f2716e543d97	794
dudmuck	0:f2716e543d97	795	// US does not have duty cycling - return now as earliest TX time
dudmuck	0:f2716e543d97	796	#define nextTx(now) (_nextTx(),(now))
dudmuck	0:f2716e543d97	797	static void _nextTx (void) {
dudmuck	0:f2716e543d97	798	if( LMIC.chRnd==0 )
dudmuck	0:f2716e543d97	799	LMIC.chRnd = os_getRndU1() & 0x3F;
dudmuck	0:f2716e543d97	800	if( LMIC.datarate >= DR_SF8C ) { // 500kHz
dudmuck	0:f2716e543d97	801	u1_t map = LMIC.channelMap[64/16]&0xFF;
dudmuck	0:f2716e543d97	802	for( u1_t i=0; i<8; i++ ) {
dudmuck	0:f2716e543d97	803	if( (map & (1<<(++LMIC.chRnd & 7))) != 0 ) {
dudmuck	0:f2716e543d97	804	LMIC.txChnl = 64 + (LMIC.chRnd & 7);
dudmuck	0:f2716e543d97	805	return;
dudmuck	0:f2716e543d97	806	}
dudmuck	0:f2716e543d97	807	}
dudmuck	0:f2716e543d97	808	} else { // 125kHz
dudmuck	0:f2716e543d97	809	for( u1_t i=0; i<64; i++ ) {
dudmuck	0:f2716e543d97	810	u1_t chnl = ++LMIC.chRnd & 0x3F;
dudmuck	0:f2716e543d97	811	if( (LMIC.channelMap[(chnl >> 4)] & (1<<(chnl & 0xF))) != 0 ) {
dudmuck	0:f2716e543d97	812	LMIC.txChnl = chnl;
dudmuck	0:f2716e543d97	813	return;
dudmuck	0:f2716e543d97	814	}
dudmuck	0:f2716e543d97	815	}
dudmuck	0:f2716e543d97	816	}
dudmuck	0:f2716e543d97	817	// No feasible channel found! Keep old one.
dudmuck	0:f2716e543d97	818	}
dudmuck	0:f2716e543d97	819
dudmuck	0:f2716e543d97	820	static void setBcnRxParams (void) {
dudmuck	0:f2716e543d97	821	LMIC.dataLen = 0;
dudmuck	0:f2716e543d97	822	LMIC.freq = US915_500kHz_DNFBASE + LMIC.bcnChnl * US915_500kHz_DNFSTEP;
dudmuck	0:f2716e543d97	823	LMIC.rps = setIh(setNocrc(dndr2rps((dr_t)DR_BCN),1),LEN_BCN);
dudmuck	0:f2716e543d97	824	}
dudmuck	0:f2716e543d97	825
dudmuck	0:f2716e543d97	826	#define setRx1Params() { \
dudmuck	0:f2716e543d97	827	LMIC.freq = US915_500kHz_DNFBASE + (LMIC.txChnl & 0x7) * US915_500kHz_DNFSTEP; \
dudmuck	0:f2716e543d97	828	if( /* TX datarate */LMIC.dndr < DR_SF8C ) \
dudmuck	0:f2716e543d97	829	LMIC.dndr += DR_SF10CR - DR_SF10; \
dudmuck	0:f2716e543d97	830	else if( LMIC.dndr == DR_SF8C ) \
dudmuck	0:f2716e543d97	831	LMIC.dndr = DR_SF7CR; \
dudmuck	0:f2716e543d97	832	LMIC.rps = dndr2rps(LMIC.dndr); \
dudmuck	0:f2716e543d97	833	}
dudmuck	0:f2716e543d97	834
dudmuck	0:f2716e543d97	835	static void initJoinLoop (void) {
dudmuck	0:f2716e543d97	836	LMIC.chRnd = 0;
dudmuck	0:f2716e543d97	837	LMIC.txChnl = 0;
dudmuck	0:f2716e543d97	838	LMIC.adrTxPow = 20;
dudmuck	0:f2716e543d97	839	ASSERT((LMIC.opmode & OP_NEXTCHNL)==0);
dudmuck	0:f2716e543d97	840	LMIC.txend = os_getTime();
dudmuck	0:f2716e543d97	841	setDrJoin(DRCHG_SET, DR_SF7);
dudmuck	0:f2716e543d97	842	}
dudmuck	0:f2716e543d97	843
dudmuck	0:f2716e543d97	844	static ostime_t nextJoinState (void) {
dudmuck	0:f2716e543d97	845	// Try the following:
dudmuck	0:f2716e543d97	846	// SF7/8/9/10 on a random channel 0..63
dudmuck	0:f2716e543d97	847	// SF8C on a random channel 64..71
dudmuck	0:f2716e543d97	848	//
dudmuck	0:f2716e543d97	849	u1_t failed = 0;
dudmuck	0:f2716e543d97	850	if( LMIC.datarate != DR_SF8C ) {
dudmuck	0:f2716e543d97	851	LMIC.txChnl = 64+(LMIC.txChnl&7);
dudmuck	0:f2716e543d97	852	setDrJoin(DRCHG_SET, DR_SF8C);
dudmuck	0:f2716e543d97	853	} else {
dudmuck	0:f2716e543d97	854	LMIC.txChnl = os_getRndU1() & 0x3F;
dudmuck	0:f2716e543d97	855	s1_t dr = DR_SF7 - ++LMIC.txCnt;
dudmuck	0:f2716e543d97	856	if( dr < DR_SF10 ) {
dudmuck	0:f2716e543d97	857	dr = DR_SF10;
dudmuck	0:f2716e543d97	858	failed = 1; // All DR exhausted - signal failed
dudmuck	0:f2716e543d97	859	}
dudmuck	0:f2716e543d97	860	setDrJoin(DRCHG_SET, dr);
dudmuck	0:f2716e543d97	861	}
dudmuck	0:f2716e543d97	862	LMIC.opmode &= ~OP_NEXTCHNL;
dudmuck	0:f2716e543d97	863	LMIC.txend = os_getTime() +
dudmuck	0:f2716e543d97	864	(isTESTMODE()
dudmuck	0:f2716e543d97	865	// Avoid collision with JOIN ACCEPT being sent by GW (but we missed it - GW is still busy)
dudmuck	0:f2716e543d97	866	? DNW2_SAFETY_ZONE
dudmuck	0:f2716e543d97	867	// Otherwise: randomize join (street lamp case):
dudmuck	0:f2716e543d97	868	// SF10:16, SF9=8,..SF8C:1secs
dudmuck	0:f2716e543d97	869	: rndDelay(16>>LMIC.datarate));
dudmuck	0:f2716e543d97	870	// 1 - triggers EV_JOIN_FAILED event
dudmuck	0:f2716e543d97	871	return failed;
dudmuck	0:f2716e543d97	872	}
dudmuck	0:f2716e543d97	873
dudmuck	0:f2716e543d97	874	//
dudmuck	0:f2716e543d97	875	// END: US915 related stuff
dudmuck	0:f2716e543d97	876	//
dudmuck	0:f2716e543d97	877	// ================================================================================
dudmuck	0:f2716e543d97	878	#else
dudmuck	0:f2716e543d97	879	#error Unsupported frequency band!
dudmuck	0:f2716e543d97	880	#endif
dudmuck	0:f2716e543d97	881
dudmuck	0:f2716e543d97	882
dudmuck	0:f2716e543d97	883	static void runEngineUpdate (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	884	engineUpdate();
dudmuck	0:f2716e543d97	885	}
dudmuck	0:f2716e543d97	886
dudmuck	0:f2716e543d97	887
dudmuck	0:f2716e543d97	888	static void reportEvent (ev_t ev) {
dudmuck	0:f2716e543d97	889	EV(devCond, INFO, (e_.reason = EV::devCond_t::LMIC_EV,
dudmuck	0:f2716e543d97	890	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	891	e_.info = ev));
dudmuck	0:f2716e543d97	892	ON_LMIC_EVENT(ev);
dudmuck	0:f2716e543d97	893	engineUpdate();
dudmuck	0:f2716e543d97	894	}
dudmuck	0:f2716e543d97	895
dudmuck	0:f2716e543d97	896
dudmuck	0:f2716e543d97	897	static void runReset (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	898	// Disable session
dudmuck	0:f2716e543d97	899	LMIC_reset();
dudmuck	0:f2716e543d97	900	LMIC_startJoining();
dudmuck	0:f2716e543d97	901	reportEvent(EV_RESET);
dudmuck	0:f2716e543d97	902	}
dudmuck	0:f2716e543d97	903
dudmuck	0:f2716e543d97	904	static void stateJustJoined (void) {
dudmuck	0:f2716e543d97	905	LMIC.seqnoDn = LMIC.seqnoUp = 0;
dudmuck	0:f2716e543d97	906	LMIC.rejoinCnt = 0;
dudmuck	0:f2716e543d97	907	LMIC.dnConf = LMIC.adrChanged = LMIC.ladrAns = LMIC.devsAns = 0;
dudmuck	0:f2716e543d97	908	LMIC.moreData = LMIC.dn2Ans = LMIC.snchAns = LMIC.dutyCapAns = 0;
dudmuck	0:f2716e543d97	909	LMIC.pingSetAns = 0;
dudmuck	0:f2716e543d97	910	LMIC.upRepeat = 0;
dudmuck	0:f2716e543d97	911	LMIC.adrAckReq = LINK_CHECK_INIT;
dudmuck	0:f2716e543d97	912	LMIC.dn2Dr = DR_DNW2;
dudmuck	0:f2716e543d97	913	LMIC.dn2Freq = FREQ_DNW2;
dudmuck	0:f2716e543d97	914	LMIC.bcnChnl = CHNL_BCN;
dudmuck	0:f2716e543d97	915	LMIC.ping.freq = FREQ_PING;
dudmuck	0:f2716e543d97	916	LMIC.ping.dr = DR_PING;
dudmuck	0:f2716e543d97	917	}
dudmuck	0:f2716e543d97	918
dudmuck	0:f2716e543d97	919
dudmuck	0:f2716e543d97	920	// ================================================================================
dudmuck	0:f2716e543d97	921	// Decoding frames
dudmuck	0:f2716e543d97	922
dudmuck	0:f2716e543d97	923
dudmuck	0:f2716e543d97	924	// Decode beacon - do not overwrite bcninfo unless we have a match!
dudmuck	0:f2716e543d97	925	static int decodeBeacon (void) {
dudmuck	0:f2716e543d97	926	ASSERT(LMIC.dataLen == LEN_BCN); // implicit header RX guarantees this
dudmuck	0:f2716e543d97	927	xref2u1_t d = LMIC.frame;
dudmuck	0:f2716e543d97	928	if(
dudmuck	0:f2716e543d97	929	#ifdef CFG_eu868
dudmuck	0:f2716e543d97	930	d[OFF_BCN_CRC1] != (u1_t)os_crc16(d,OFF_BCN_CRC1)
dudmuck	0:f2716e543d97	931	#elif defined(CFG_us915)
dudmuck	0:f2716e543d97	932	os_rlsbf2(&d[OFF_BCN_CRC1]) != os_crc16(d,OFF_BCN_CRC1)
dudmuck	0:f2716e543d97	933	#endif
dudmuck	0:f2716e543d97	934	)
dudmuck	0:f2716e543d97	935	return 0; // first (common) part fails CRC check
dudmuck	0:f2716e543d97	936	// First set of fields is ok
dudmuck	0:f2716e543d97	937	u4_t bcnnetid = os_rlsbf4(&d[OFF_BCN_NETID]) & 0xFFFFFF;
dudmuck	0:f2716e543d97	938	if( bcnnetid != LMIC.netid )
dudmuck	0:f2716e543d97	939	return -1; // not the beacon we're looking for
dudmuck	0:f2716e543d97	940
dudmuck	0:f2716e543d97	941	LMIC.bcninfo.flags &= ~(BCN_PARTIAL\|BCN_FULL);
dudmuck	0:f2716e543d97	942	// Match - update bcninfo structure
dudmuck	0:f2716e543d97	943	LMIC.bcninfo.snr = LMIC.snr;
dudmuck	0:f2716e543d97	944	LMIC.bcninfo.rssi = LMIC.rssi;
dudmuck	0:f2716e543d97	945	LMIC.bcninfo.txtime = LMIC.rxtime - AIRTIME_BCN_osticks;
dudmuck	0:f2716e543d97	946	LMIC.bcninfo.time = os_rlsbf4(&d[OFF_BCN_TIME]);
dudmuck	0:f2716e543d97	947	LMIC.bcninfo.flags \|= BCN_PARTIAL;
dudmuck	0:f2716e543d97	948
dudmuck	0:f2716e543d97	949	// Check 2nd set
dudmuck	0:f2716e543d97	950	if( os_rlsbf2(&d[OFF_BCN_CRC2]) != os_crc16(d,OFF_BCN_CRC2) )
dudmuck	0:f2716e543d97	951	return 1;
dudmuck	0:f2716e543d97	952	// Second set of fields is ok
dudmuck	0:f2716e543d97	953	LMIC.bcninfo.lat = (s4_t)os_rlsbf4(&d[OFF_BCN_LAT-1]) >> 8; // read as signed 24-bit
dudmuck	0:f2716e543d97	954	LMIC.bcninfo.lon = (s4_t)os_rlsbf4(&d[OFF_BCN_LON-1]) >> 8; // ditto
dudmuck	0:f2716e543d97	955	LMIC.bcninfo.info = d[OFF_BCN_INFO];
dudmuck	0:f2716e543d97	956	LMIC.bcninfo.flags \|= BCN_FULL;
dudmuck	0:f2716e543d97	957	return 2;
dudmuck	0:f2716e543d97	958	}
dudmuck	0:f2716e543d97	959
dudmuck	0:f2716e543d97	960
dudmuck	0:f2716e543d97	961	static bit_t decodeFrame (void) {
dudmuck	0:f2716e543d97	962	xref2u1_t d = LMIC.frame;
dudmuck	0:f2716e543d97	963	u1_t hdr = d[0];
dudmuck	0:f2716e543d97	964	u1_t ftype = hdr & HDR_FTYPE;
dudmuck	0:f2716e543d97	965	int dlen = LMIC.dataLen;
dudmuck	0:f2716e543d97	966	if( dlen < OFF_DAT_OPTS+4 \|\|
dudmuck	0:f2716e543d97	967	(hdr & HDR_MAJOR) != HDR_MAJOR_V1 \|\|
dudmuck	0:f2716e543d97	968	(ftype != HDR_FTYPE_DADN && ftype != HDR_FTYPE_DCDN) ) {
dudmuck	0:f2716e543d97	969	// Basic sanity checks failed
dudmuck	0:f2716e543d97	970	EV(specCond, WARN, (e_.reason = EV::specCond_t::UNEXPECTED_FRAME,
dudmuck	0:f2716e543d97	971	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	972	e_.info = dlen < 4 ? 0 : os_rlsbf4(&d[dlen-4]),
dudmuck	0:f2716e543d97	973	e_.info2 = hdr + (dlen<<8)));
dudmuck	0:f2716e543d97	974	norx:
dudmuck	0:f2716e543d97	975	LMIC.dataLen = 0;
dudmuck	0:f2716e543d97	976	return 0;
dudmuck	0:f2716e543d97	977	}
dudmuck	0:f2716e543d97	978	// Validate exact frame length
dudmuck	0:f2716e543d97	979	// Note: device address was already read+evaluated in order to arrive here.
dudmuck	0:f2716e543d97	980	int fct = d[OFF_DAT_FCT];
dudmuck	0:f2716e543d97	981	u4_t addr = os_rlsbf4(&d[OFF_DAT_ADDR]);
dudmuck	0:f2716e543d97	982	u4_t seqno = os_rlsbf2(&d[OFF_DAT_SEQNO]);
dudmuck	0:f2716e543d97	983	int olen = fct & FCT_OPTLEN;
dudmuck	0:f2716e543d97	984	int ackup = (fct & FCT_ACK) != 0 ? 1 : 0; // ACK last up frame
dudmuck	0:f2716e543d97	985	int poff = OFF_DAT_OPTS+olen;
dudmuck	0:f2716e543d97	986	int pend = dlen-4; // MIC
dudmuck	0:f2716e543d97	987
dudmuck	0:f2716e543d97	988	if( addr != LMIC.devaddr ) {
dudmuck	0:f2716e543d97	989	EV(specCond, WARN, (e_.reason = EV::specCond_t::ALIEN_ADDRESS,
dudmuck	0:f2716e543d97	990	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	991	e_.info = addr,
dudmuck	0:f2716e543d97	992	e_.info2 = LMIC.devaddr));
dudmuck	0:f2716e543d97	993	goto norx;
dudmuck	0:f2716e543d97	994	}
dudmuck	0:f2716e543d97	995	if( poff > pend ) {
dudmuck	0:f2716e543d97	996	EV(specCond, ERR, (e_.reason = EV::specCond_t::CORRUPTED_FRAME,
dudmuck	0:f2716e543d97	997	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	998	e_.info = 0x1000000 + (poff-pend) + (fct<<8) + (dlen<<16)));
dudmuck	0:f2716e543d97	999	goto norx;
dudmuck	0:f2716e543d97	1000	}
dudmuck	0:f2716e543d97	1001
dudmuck	0:f2716e543d97	1002	int port = -1;
dudmuck	0:f2716e543d97	1003	int replayConf = 0;
dudmuck	0:f2716e543d97	1004
dudmuck	0:f2716e543d97	1005	if( pend > poff )
dudmuck	0:f2716e543d97	1006	port = d[poff++];
dudmuck	0:f2716e543d97	1007
dudmuck	0:f2716e543d97	1008	seqno = LMIC.seqnoDn + (u2_t)(seqno - LMIC.seqnoDn);
dudmuck	0:f2716e543d97	1009
dudmuck	0:f2716e543d97	1010	if( !aes_verifyMic(LMIC.nwkKey, LMIC.devaddr, seqno, /dn/1, d, pend) ) {
dudmuck	0:f2716e543d97	1011	EV(spe3Cond, ERR, (e_.reason = EV::spe3Cond_t::CORRUPTED_MIC,
dudmuck	0:f2716e543d97	1012	e_.eui1 = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1013	e_.info1 = Base::lsbf4(&d[pend]),
dudmuck	0:f2716e543d97	1014	e_.info2 = seqno,
dudmuck	0:f2716e543d97	1015	e_.info3 = LMIC.devaddr));
dudmuck	0:f2716e543d97	1016	goto norx;
dudmuck	0:f2716e543d97	1017	}
dudmuck	0:f2716e543d97	1018	if( seqno < LMIC.seqnoDn ) {
dudmuck	0:f2716e543d97	1019	if( (s4_t)seqno > (s4_t)LMIC.seqnoDn ) {
dudmuck	0:f2716e543d97	1020	EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_ROLL_OVER,
dudmuck	0:f2716e543d97	1021	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1022	e_.info = LMIC.seqnoDn,
dudmuck	0:f2716e543d97	1023	e_.info2 = seqno));
dudmuck	0:f2716e543d97	1024	goto norx;
dudmuck	0:f2716e543d97	1025	}
dudmuck	0:f2716e543d97	1026	if( seqno != LMIC.seqnoDn-1 \|\| !LMIC.dnConf \|\| ftype != HDR_FTYPE_DCDN ) {
dudmuck	0:f2716e543d97	1027	EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_OBSOLETE,
dudmuck	0:f2716e543d97	1028	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1029	e_.info = LMIC.seqnoDn,
dudmuck	0:f2716e543d97	1030	e_.info2 = seqno));
dudmuck	0:f2716e543d97	1031	goto norx;
dudmuck	0:f2716e543d97	1032	}
dudmuck	0:f2716e543d97	1033	// Replay of previous sequence number allowed only if
dudmuck	0:f2716e543d97	1034	// previous frame and repeated both requested confirmation
dudmuck	0:f2716e543d97	1035	replayConf = 1;
dudmuck	0:f2716e543d97	1036	}
dudmuck	0:f2716e543d97	1037	else {
dudmuck	0:f2716e543d97	1038	if( seqno > LMIC.seqnoDn ) {
dudmuck	0:f2716e543d97	1039	EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_SKIP,
dudmuck	0:f2716e543d97	1040	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1041	e_.info = LMIC.seqnoDn,
dudmuck	0:f2716e543d97	1042	e_.info2 = seqno));
dudmuck	0:f2716e543d97	1043	}
dudmuck	0:f2716e543d97	1044	LMIC.seqnoDn = seqno+1; // next number to be expected
dudmuck	0:f2716e543d97	1045	DO_DEVDB(LMIC.seqnoDn,seqnoDn);
dudmuck	0:f2716e543d97	1046	// DN frame requested confirmation - provide ACK once with next UP frame
dudmuck	0:f2716e543d97	1047	LMIC.dnConf = (ftype == HDR_FTYPE_DCDN ? FCT_ACK : 0);
dudmuck	0:f2716e543d97	1048	}
dudmuck	0:f2716e543d97	1049
dudmuck	0:f2716e543d97	1050	if( LMIC.dnConf \|\| (fct & FCT_MORE) )
dudmuck	0:f2716e543d97	1051	LMIC.opmode \|= OP_POLL;
dudmuck	0:f2716e543d97	1052
dudmuck	0:f2716e543d97	1053	// We heard from network
dudmuck	0:f2716e543d97	1054	LMIC.adrChanged = LMIC.rejoinCnt = 0;
dudmuck	0:f2716e543d97	1055	if( LMIC.adrAckReq != LINK_CHECK_OFF )
dudmuck	0:f2716e543d97	1056	LMIC.adrAckReq = LINK_CHECK_INIT;
dudmuck	0:f2716e543d97	1057
dudmuck	0:f2716e543d97	1058	// Process OPTS
dudmuck	0:f2716e543d97	1059	int m = LMIC.rssi - RSSI_OFF - getSensitivity(LMIC.rps);
dudmuck	0:f2716e543d97	1060	LMIC.margin = m < 0 ? 0 : m > 254 ? 254 : m;
dudmuck	0:f2716e543d97	1061
dudmuck	0:f2716e543d97	1062	xref2u1_t opts = &d[OFF_DAT_OPTS];
dudmuck	0:f2716e543d97	1063	int oidx = 0;
dudmuck	0:f2716e543d97	1064	while( oidx < olen ) {
dudmuck	0:f2716e543d97	1065	switch( opts[oidx] ) {
dudmuck	0:f2716e543d97	1066	case MCMD_LCHK_ANS: {
dudmuck	0:f2716e543d97	1067	//int gwmargin = opts[oidx+1];
dudmuck	0:f2716e543d97	1068	//int ngws = opts[oidx+2];
dudmuck	0:f2716e543d97	1069	oidx += 3;
dudmuck	0:f2716e543d97	1070	continue;
dudmuck	0:f2716e543d97	1071	}
dudmuck	0:f2716e543d97	1072	case MCMD_LADR_REQ: {
dudmuck	0:f2716e543d97	1073	u1_t p1 = opts[oidx+1]; // txpow + DR
dudmuck	0:f2716e543d97	1074	u2_t chmap = os_rlsbf2(&opts[oidx+2]);// list of enabled channels
dudmuck	0:f2716e543d97	1075	u1_t chpage = opts[oidx+4] & MCMD_LADR_CHPAGE_MASK; // channel page
dudmuck	0:f2716e543d97	1076	u1_t uprpt = opts[oidx+4] & MCMD_LADR_REPEAT_MASK; // up repeat count
dudmuck	0:f2716e543d97	1077	oidx += 5;
dudmuck	0:f2716e543d97	1078
dudmuck	0:f2716e543d97	1079	LMIC.ladrAns = 0x80 \| // Include an answer into next frame up
dudmuck	0:f2716e543d97	1080	MCMD_LADR_ANS_POWACK \| MCMD_LADR_ANS_CHACK \| MCMD_LADR_ANS_DRACK;
dudmuck	0:f2716e543d97	1081	if( !mapChannels(chpage, chmap) )
dudmuck	0:f2716e543d97	1082	LMIC.ladrAns &= ~MCMD_LADR_ANS_CHACK;
dudmuck	0:f2716e543d97	1083	dr_t dr = (dr_t)(p1>>MCMD_LADR_DR_SHIFT);
dudmuck	0:f2716e543d97	1084	if( !validDR(dr) ) {
dudmuck	0:f2716e543d97	1085	LMIC.ladrAns &= ~MCMD_LADR_ANS_DRACK;
dudmuck	0:f2716e543d97	1086	EV(specCond, ERR, (e_.reason = EV::specCond_t::BAD_MAC_CMD,
dudmuck	0:f2716e543d97	1087	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1088	e_.info = Base::lsbf4(&d[pend]),
dudmuck	0:f2716e543d97	1089	e_.info2 = Base::msbf4(&opts[oidx-4])));
dudmuck	0:f2716e543d97	1090	}
dudmuck	0:f2716e543d97	1091	if( (LMIC.ladrAns & 0x7F) == (MCMD_LADR_ANS_POWACK \| MCMD_LADR_ANS_CHACK \| MCMD_LADR_ANS_DRACK) ) {
dudmuck	0:f2716e543d97	1092	// Nothing went wrong - use settings
dudmuck	0:f2716e543d97	1093	LMIC.upRepeat = uprpt;
dudmuck	0:f2716e543d97	1094	setDrTxpow(DRCHG_NWKCMD, dr, pow2dBm(p1));
dudmuck	0:f2716e543d97	1095	}
dudmuck	0:f2716e543d97	1096	LMIC.adrChanged = 1; // Trigger an ACK to NWK
dudmuck	0:f2716e543d97	1097	continue;
dudmuck	0:f2716e543d97	1098	}
dudmuck	0:f2716e543d97	1099	case MCMD_DEVS_REQ: {
dudmuck	0:f2716e543d97	1100	LMIC.devsAns = 1;
dudmuck	0:f2716e543d97	1101	oidx += 1;
dudmuck	0:f2716e543d97	1102	continue;
dudmuck	0:f2716e543d97	1103	}
dudmuck	0:f2716e543d97	1104	case MCMD_DN2P_SET: {
dudmuck	0:f2716e543d97	1105	dr_t dr = (dr_t)(opts[oidx+1] & 0x0F);
dudmuck	0:f2716e543d97	1106	u4_t freq = convFreq(&opts[oidx+2]);
dudmuck	0:f2716e543d97	1107	oidx += 5;
dudmuck	0:f2716e543d97	1108	LMIC.dn2Ans = 0x80; // answer pending
dudmuck	0:f2716e543d97	1109	if( validDR(dr) )
dudmuck	0:f2716e543d97	1110	LMIC.dn2Ans \|= MCMD_DN2P_ANS_DRACK;
dudmuck	0:f2716e543d97	1111	if( freq != 0 )
dudmuck	0:f2716e543d97	1112	LMIC.dn2Ans \|= MCMD_DN2P_ANS_CHACK;
dudmuck	0:f2716e543d97	1113	if( LMIC.dn2Ans == (0x80\|MCMD_DN2P_ANS_DRACK\|MCMD_DN2P_ANS_CHACK) ) {
dudmuck	0:f2716e543d97	1114	LMIC.dn2Dr = dr;
dudmuck	0:f2716e543d97	1115	LMIC.dn2Freq = freq;
dudmuck	0:f2716e543d97	1116	DO_DEVDB(LMIC.dn2Dr,dn2Dr);
dudmuck	0:f2716e543d97	1117	DO_DEVDB(LMIC.dn2Freq,dn2Freq);
dudmuck	0:f2716e543d97	1118	}
dudmuck	0:f2716e543d97	1119	continue;
dudmuck	0:f2716e543d97	1120	}
dudmuck	0:f2716e543d97	1121	case MCMD_DCAP_REQ: {
dudmuck	0:f2716e543d97	1122	u1_t cap = opts[oidx+1];
dudmuck	0:f2716e543d97	1123	oidx += 2;
dudmuck	0:f2716e543d97	1124	// A value cap=0xFF means device is OFF unless enabled again manually.
dudmuck	0:f2716e543d97	1125	if( cap==0xFF )
dudmuck	0:f2716e543d97	1126	LMIC.opmode \|= OP_SHUTDOWN; // stop any sending
dudmuck	0:f2716e543d97	1127	LMIC.globalDutyRate = cap & 0xF;
dudmuck	0:f2716e543d97	1128	LMIC.globalDutyAvail = os_getTime();
dudmuck	0:f2716e543d97	1129	DO_DEVDB(cap,dutyCap);
dudmuck	0:f2716e543d97	1130	LMIC.dutyCapAns = 1;
dudmuck	0:f2716e543d97	1131	continue;
dudmuck	0:f2716e543d97	1132	}
dudmuck	0:f2716e543d97	1133	case MCMD_SNCH_REQ: {
dudmuck	0:f2716e543d97	1134	u1_t chidx = opts[oidx+1]; // channel
dudmuck	0:f2716e543d97	1135	u4_t freq = convFreq(&opts[oidx+2]); // freq
dudmuck	0:f2716e543d97	1136	u1_t drs = opts[oidx+5]; // datarate span
dudmuck	0:f2716e543d97	1137	LMIC.snchAns = 0x80;
dudmuck	0:f2716e543d97	1138	if( freq != 0 && LMIC_setupChannel(chidx, freq, DR_RANGE_MAP(drs&0xF,drs>>4), -1) )
dudmuck	0:f2716e543d97	1139	LMIC.snchAns \|= MCMD_SNCH_ANS_DRACK\|MCMD_SNCH_ANS_FQACK;
dudmuck	0:f2716e543d97	1140	oidx += 6;
dudmuck	0:f2716e543d97	1141	continue;
dudmuck	0:f2716e543d97	1142	}
dudmuck	0:f2716e543d97	1143	case MCMD_PING_SET: {
dudmuck	0:f2716e543d97	1144	u4_t freq = convFreq(&opts[oidx+1]);
dudmuck	0:f2716e543d97	1145	oidx += 4;
dudmuck	0:f2716e543d97	1146	u1_t flags = 0x80;
dudmuck	0:f2716e543d97	1147	if( freq != 0 ) {
dudmuck	0:f2716e543d97	1148	flags \|= MCMD_PING_ANS_FQACK;
dudmuck	0:f2716e543d97	1149	LMIC.ping.freq = freq;
dudmuck	0:f2716e543d97	1150	DO_DEVDB(LMIC.ping.intvExp, pingIntvExp);
dudmuck	0:f2716e543d97	1151	DO_DEVDB(LMIC.ping.freq, pingFreq);
dudmuck	0:f2716e543d97	1152	DO_DEVDB(LMIC.ping.dr, pingDr);
dudmuck	0:f2716e543d97	1153	}
dudmuck	0:f2716e543d97	1154	LMIC.pingSetAns = flags;
dudmuck	0:f2716e543d97	1155	continue;
dudmuck	0:f2716e543d97	1156	}
dudmuck	0:f2716e543d97	1157	case MCMD_BCNI_ANS: {
dudmuck	0:f2716e543d97	1158	// Ignore if tracking already enabled
dudmuck	0:f2716e543d97	1159	if( (LMIC.opmode & OP_TRACK) == 0 ) {
dudmuck	0:f2716e543d97	1160	LMIC.bcnChnl = opts[oidx+3];
dudmuck	0:f2716e543d97	1161	// Enable tracking - bcninfoTries
dudmuck	0:f2716e543d97	1162	LMIC.opmode \|= OP_TRACK;
dudmuck	0:f2716e543d97	1163	// Cleared later in txComplete handling - triggers EV_BEACON_FOUND
dudmuck	0:f2716e543d97	1164	ASSERT(LMIC.bcninfoTries!=0);
dudmuck	0:f2716e543d97	1165	// Setup RX parameters
dudmuck	0:f2716e543d97	1166	LMIC.bcninfo.txtime = (LMIC.rxtime
dudmuck	0:f2716e543d97	1167	+ ms2osticks(os_rlsbf2(&opts[oidx+1]) * MCMD_BCNI_TUNIT)
dudmuck	0:f2716e543d97	1168	+ ms2osticksCeil(MCMD_BCNI_TUNIT/2)
dudmuck	0:f2716e543d97	1169	- BCN_INTV_osticks);
dudmuck	0:f2716e543d97	1170	LMIC.bcninfo.flags = 0; // txtime above cannot be used as reference (BCN_PARTIAL\|BCN_FULL cleared)
dudmuck	0:f2716e543d97	1171	calcBcnRxWindowFromMillis(MCMD_BCNI_TUNIT,1); // error of +/-N ms
dudmuck	0:f2716e543d97	1172
dudmuck	0:f2716e543d97	1173	EV(lostFrame, INFO, (e_.reason = EV::lostFrame_t::MCMD_BCNI_ANS,
dudmuck	0:f2716e543d97	1174	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1175	e_.lostmic = Base::lsbf4(&d[pend]),
dudmuck	0:f2716e543d97	1176	e_.info = (LMIC.missedBcns \|
dudmuck	0:f2716e543d97	1177	(osticks2us(LMIC.bcninfo.txtime + BCN_INTV_osticks
dudmuck	0:f2716e543d97	1178	- LMIC.bcnRxtime) << 8)),
dudmuck	0:f2716e543d97	1179	e_.time = MAIN::CDEV->ostime2ustime(LMIC.bcninfo.txtime + BCN_INTV_osticks)));
dudmuck	0:f2716e543d97	1180	}
dudmuck	0:f2716e543d97	1181	oidx += 4;
dudmuck	0:f2716e543d97	1182	continue;
dudmuck	0:f2716e543d97	1183	}
dudmuck	0:f2716e543d97	1184	}
dudmuck	0:f2716e543d97	1185	EV(specCond, ERR, (e_.reason = EV::specCond_t::BAD_MAC_CMD,
dudmuck	0:f2716e543d97	1186	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1187	e_.info = Base::lsbf4(&d[pend]),
dudmuck	0:f2716e543d97	1188	e_.info2 = Base::msbf4(&opts[oidx])));
dudmuck	0:f2716e543d97	1189	break;
dudmuck	0:f2716e543d97	1190	}
dudmuck	0:f2716e543d97	1191	if( oidx != olen ) {
dudmuck	0:f2716e543d97	1192	EV(specCond, ERR, (e_.reason = EV::specCond_t::CORRUPTED_FRAME,
dudmuck	0:f2716e543d97	1193	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1194	e_.info = 0x1000000 + (oidx) + (olen<<8)));
dudmuck	0:f2716e543d97	1195	}
dudmuck	0:f2716e543d97	1196
dudmuck	0:f2716e543d97	1197	if( !replayConf ) {
dudmuck	0:f2716e543d97	1198	// Handle payload only if not a replay
dudmuck	0:f2716e543d97	1199	// Decrypt payload - if any
dudmuck	0:f2716e543d97	1200	if( port >= 0 && pend-poff > 0 )
dudmuck	0:f2716e543d97	1201	aes_cipher(port <= 0 ? LMIC.nwkKey : LMIC.artKey, LMIC.devaddr, seqno, /dn/1, d+poff, pend-poff);
dudmuck	0:f2716e543d97	1202
dudmuck	0:f2716e543d97	1203	EV(dfinfo, DEBUG, (e_.deveui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1204	e_.devaddr = LMIC.devaddr,
dudmuck	0:f2716e543d97	1205	e_.seqno = seqno,
dudmuck	0:f2716e543d97	1206	e_.flags = (port < 0 ? EV::dfinfo_t::NOPORT : 0) \| EV::dfinfo_t::DN,
dudmuck	0:f2716e543d97	1207	e_.mic = Base::lsbf4(&d[pend]),
dudmuck	0:f2716e543d97	1208	e_.hdr = d[LORA::OFF_DAT_HDR],
dudmuck	0:f2716e543d97	1209	e_.fct = d[LORA::OFF_DAT_FCT],
dudmuck	0:f2716e543d97	1210	e_.port = port,
dudmuck	0:f2716e543d97	1211	e_.plen = dlen,
dudmuck	0:f2716e543d97	1212	e_.opts.length = olen,
dudmuck	0:f2716e543d97	1213	memcpy(&e_.opts[0], opts, olen)));
dudmuck	0:f2716e543d97	1214	} else {
dudmuck	0:f2716e543d97	1215	EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_REPLAY,
dudmuck	0:f2716e543d97	1216	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1217	e_.info = Base::lsbf4(&d[pend]),
dudmuck	0:f2716e543d97	1218	e_.info2 = seqno));
dudmuck	0:f2716e543d97	1219	}
dudmuck	0:f2716e543d97	1220
dudmuck	0:f2716e543d97	1221	if( // NWK acks but we don't have a frame pending
dudmuck	0:f2716e543d97	1222	(ackup && LMIC.txCnt == 0) \|\|
dudmuck	0:f2716e543d97	1223	// We sent up confirmed and we got a response in DNW1/DNW2
dudmuck	0:f2716e543d97	1224	// BUT it did not carry an ACK - this should never happen
dudmuck	0:f2716e543d97	1225	// Do not resend and assume frame was not ACKed.
dudmuck	0:f2716e543d97	1226	(!ackup && LMIC.txCnt != 0) ) {
dudmuck	0:f2716e543d97	1227	EV(specCond, ERR, (e_.reason = EV::specCond_t::SPURIOUS_ACK,
dudmuck	0:f2716e543d97	1228	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1229	e_.info = seqno,
dudmuck	0:f2716e543d97	1230	e_.info2 = ackup));
dudmuck	0:f2716e543d97	1231	}
dudmuck	0:f2716e543d97	1232
dudmuck	0:f2716e543d97	1233	if( LMIC.txCnt != 0 ) // we requested an ACK
dudmuck	0:f2716e543d97	1234	LMIC.txrxFlags \|= ackup ? TXRX_ACK : TXRX_NACK;
dudmuck	0:f2716e543d97	1235
dudmuck	0:f2716e543d97	1236	if( port < 0 ) {
dudmuck	0:f2716e543d97	1237	LMIC.txrxFlags \|= TXRX_NOPORT;
dudmuck	0:f2716e543d97	1238	LMIC.dataBeg = poff;
dudmuck	0:f2716e543d97	1239	LMIC.dataLen = 0;
dudmuck	0:f2716e543d97	1240	} else {
dudmuck	0:f2716e543d97	1241	LMIC.txrxFlags \|= TXRX_PORT;
dudmuck	0:f2716e543d97	1242	LMIC.dataBeg = poff;
dudmuck	0:f2716e543d97	1243	LMIC.dataLen = pend-poff;
dudmuck	0:f2716e543d97	1244	}
dudmuck	0:f2716e543d97	1245	return 1;
dudmuck	0:f2716e543d97	1246	}
dudmuck	0:f2716e543d97	1247
dudmuck	0:f2716e543d97	1248
dudmuck	0:f2716e543d97	1249	// ================================================================================
dudmuck	0:f2716e543d97	1250	// TX/RX transaction support
dudmuck	0:f2716e543d97	1251
dudmuck	0:f2716e543d97	1252
dudmuck	0:f2716e543d97	1253	static void setupRx2 (void) {
dudmuck	0:f2716e543d97	1254	LMIC.txrxFlags = TXRX_DNW2;
dudmuck	0:f2716e543d97	1255	LMIC.rps = dndr2rps(LMIC.dn2Dr);
dudmuck	0:f2716e543d97	1256	LMIC.freq = LMIC.dn2Freq;
dudmuck	0:f2716e543d97	1257	LMIC.dataLen = 0;
dudmuck	0:f2716e543d97	1258	os_radio(RADIO_RX);
dudmuck	0:f2716e543d97	1259	}
dudmuck	0:f2716e543d97	1260
dudmuck	0:f2716e543d97	1261
dudmuck	0:f2716e543d97	1262	static void schedRx2 (ostime_t delay, osjobcb_t func) {
dudmuck	0:f2716e543d97	1263	// Add 1.5 symbols we need 5 out of 8. Try to sync 1.5 symbols into the preamble.
dudmuck	0:f2716e543d97	1264	LMIC.rxtime = LMIC.txend + delay + (PAMBL_SYMS-MINRX_SYMS)*dr2hsym(LMIC.dn2Dr);
dudmuck	0:f2716e543d97	1265	os_setTimedCallback(&LMIC.osjob, LMIC.rxtime - RX_RAMPUP, func);
dudmuck	0:f2716e543d97	1266	}
dudmuck	0:f2716e543d97	1267
dudmuck	0:f2716e543d97	1268	static void setupRx1 (osjobcb_t func) {
dudmuck	0:f2716e543d97	1269	LMIC.txrxFlags = TXRX_DNW1;
dudmuck	0:f2716e543d97	1270	// Turn LMIC.rps from TX over to RX
dudmuck	0:f2716e543d97	1271	LMIC.rps = setNocrc(LMIC.rps,1);
dudmuck	0:f2716e543d97	1272	LMIC.dataLen = 0;
dudmuck	0:f2716e543d97	1273	LMIC.osjob.func = func;
dudmuck	0:f2716e543d97	1274	os_radio(RADIO_RX);
dudmuck	0:f2716e543d97	1275	}
dudmuck	0:f2716e543d97	1276
dudmuck	0:f2716e543d97	1277
dudmuck	0:f2716e543d97	1278	// Called by HAL once TX complete and delivers exact end of TX time stamp in LMIC.rxtime
dudmuck	0:f2716e543d97	1279	static void txDone (ostime_t delay, osjobcb_t func) {
dudmuck	0:f2716e543d97	1280	if( (LMIC.opmode & (OP_TRACK\|OP_PINGABLE\|OP_PINGINI)) == (OP_TRACK\|OP_PINGABLE) ) {
dudmuck	0:f2716e543d97	1281	rxschedInit(&LMIC.ping); // note: reuses LMIC.frame buffer!
dudmuck	0:f2716e543d97	1282	LMIC.opmode \|= OP_PINGINI;
dudmuck	0:f2716e543d97	1283	}
dudmuck	0:f2716e543d97	1284	// Change RX frequency / rps (US only) before we increment txChnl
dudmuck	0:f2716e543d97	1285	setRx1Params();
dudmuck	0:f2716e543d97	1286	// LMIC.rxsyms carries the TX datarate (can be != LMIC.datarate [confirm retries etc.])
dudmuck	0:f2716e543d97	1287	// Setup receive - LMIC.rxtime is preloaded with 1.5 symbols offset to tune
dudmuck	0:f2716e543d97	1288	// into the middle of the 8 symbols preamble.
dudmuck	0:f2716e543d97	1289	#if defined(CFG_eu868)
dudmuck	0:f2716e543d97	1290	if( /* TX datarate */LMIC.rxsyms == DR_FSK ) {
dudmuck	0:f2716e543d97	1291	LMIC.rxtime = LMIC.txend + delay - PRERX_FSK*us2osticksRound(160);
dudmuck	0:f2716e543d97	1292	LMIC.rxsyms = RXLEN_FSK;
dudmuck	0:f2716e543d97	1293	}
dudmuck	0:f2716e543d97	1294	else
dudmuck	0:f2716e543d97	1295	#endif
dudmuck	0:f2716e543d97	1296	{
dudmuck	0:f2716e543d97	1297	LMIC.rxtime = LMIC.txend + delay + (PAMBL_SYMS-MINRX_SYMS)*dr2hsym(LMIC.dndr);
dudmuck	0:f2716e543d97	1298	LMIC.rxsyms = MINRX_SYMS;
dudmuck	0:f2716e543d97	1299	}
dudmuck	0:f2716e543d97	1300	os_setTimedCallback(&LMIC.osjob, LMIC.rxtime - RX_RAMPUP, func);
dudmuck	0:f2716e543d97	1301	}
dudmuck	0:f2716e543d97	1302
dudmuck	0:f2716e543d97	1303
dudmuck	0:f2716e543d97	1304	// ======================================== Join frames
dudmuck	0:f2716e543d97	1305
dudmuck	0:f2716e543d97	1306
dudmuck	0:f2716e543d97	1307	static void onJoinFailed (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1308	// Notify app - must call LMIC_reset() to stop joining
dudmuck	0:f2716e543d97	1309	// otherwise join procedure continues.
dudmuck	0:f2716e543d97	1310	reportEvent(EV_JOIN_FAILED);
dudmuck	0:f2716e543d97	1311	}
dudmuck	0:f2716e543d97	1312
dudmuck	0:f2716e543d97	1313
dudmuck	0:f2716e543d97	1314	static bit_t processJoinAccept (void) {
dudmuck	0:f2716e543d97	1315	ASSERT(LMIC.txrxFlags != TXRX_DNW1 \|\| LMIC.dataLen != 0);
dudmuck	0:f2716e543d97	1316	ASSERT((LMIC.opmode & OP_TXRXPEND)!=0);
dudmuck	0:f2716e543d97	1317
dudmuck	0:f2716e543d97	1318	if( LMIC.dataLen == 0 ) {
dudmuck	0:f2716e543d97	1319	nojoinframe:
dudmuck	0:f2716e543d97	1320	if( (LMIC.opmode & OP_JOINING) == 0 ) {
dudmuck	0:f2716e543d97	1321	ASSERT((LMIC.opmode & OP_REJOIN) != 0);
dudmuck	0:f2716e543d97	1322	// REJOIN attempt for roaming
dudmuck	0:f2716e543d97	1323	LMIC.opmode &= ~(OP_REJOIN\|OP_TXRXPEND);
dudmuck	0:f2716e543d97	1324	if( LMIC.rejoinCnt < 10 )
dudmuck	0:f2716e543d97	1325	LMIC.rejoinCnt++;
dudmuck	0:f2716e543d97	1326	reportEvent(EV_REJOIN_FAILED);
dudmuck	0:f2716e543d97	1327	return 1;
dudmuck	0:f2716e543d97	1328	}
dudmuck	0:f2716e543d97	1329	LMIC.opmode &= ~OP_TXRXPEND;
dudmuck	0:f2716e543d97	1330	ostime_t delay = nextJoinState();
dudmuck	0:f2716e543d97	1331	EV(devCond, DEBUG, (e_.reason = EV::devCond_t::NO_JACC,
dudmuck	0:f2716e543d97	1332	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1333	e_.info = LMIC.datarate\|DR_PAGE,
dudmuck	0:f2716e543d97	1334	e_.info2 = osticks2ms(delay)));
dudmuck	0:f2716e543d97	1335	// Build next JOIN REQUEST with next engineUpdate call
dudmuck	0:f2716e543d97	1336	// Optionally, report join failed.
dudmuck	0:f2716e543d97	1337	// Both after a random/chosen amount of ticks.
dudmuck	0:f2716e543d97	1338	os_setTimedCallback(&LMIC.osjob, os_getTime()+delay,
dudmuck	0:f2716e543d97	1339	(delay&1) != 0
dudmuck	0:f2716e543d97	1340	? FUNC_ADDR(onJoinFailed) // one JOIN iteration done and failed
dudmuck	0:f2716e543d97	1341	: FUNC_ADDR(runEngineUpdate)); // next step to be delayed
dudmuck	0:f2716e543d97	1342	return 1;
dudmuck	0:f2716e543d97	1343	}
dudmuck	0:f2716e543d97	1344	u1_t hdr = LMIC.frame[0];
dudmuck	0:f2716e543d97	1345	u1_t dlen = LMIC.dataLen;
dudmuck	0:f2716e543d97	1346	u4_t mic = os_rlsbf4(&LMIC.frame[dlen-4]); // safe before modified by encrypt!
dudmuck	0:f2716e543d97	1347	if( (dlen != LEN_JA && dlen != LEN_JAEXT)
dudmuck	0:f2716e543d97	1348	\|\| (hdr & (HDR_FTYPE\|HDR_MAJOR)) != (HDR_FTYPE_JACC\|HDR_MAJOR_V1) ) {
dudmuck	0:f2716e543d97	1349	EV(specCond, ERR, (e_.reason = EV::specCond_t::UNEXPECTED_FRAME,
dudmuck	0:f2716e543d97	1350	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1351	e_.info = dlen < 4 ? 0 : mic,
dudmuck	0:f2716e543d97	1352	e_.info2 = hdr + (dlen<<8)));
dudmuck	0:f2716e543d97	1353	badframe:
dudmuck	0:f2716e543d97	1354	if( (LMIC.txrxFlags & TXRX_DNW1) != 0 )
dudmuck	0:f2716e543d97	1355	return 0;
dudmuck	0:f2716e543d97	1356	goto nojoinframe;
dudmuck	0:f2716e543d97	1357	}
dudmuck	0:f2716e543d97	1358	aes_encrypt(LMIC.frame+1, dlen-1);
dudmuck	0:f2716e543d97	1359	if( !aes_verifyMic0(LMIC.frame, dlen-4) ) {
dudmuck	0:f2716e543d97	1360	EV(specCond, ERR, (e_.reason = EV::specCond_t::JOIN_BAD_MIC,
dudmuck	0:f2716e543d97	1361	e_.info = mic));
dudmuck	0:f2716e543d97	1362	goto badframe;
dudmuck	0:f2716e543d97	1363	}
dudmuck	0:f2716e543d97	1364
dudmuck	0:f2716e543d97	1365	u4_t addr = os_rlsbf4(LMIC.frame+OFF_JA_DEVADDR);
dudmuck	0:f2716e543d97	1366	LMIC.devaddr = addr;
dudmuck	0:f2716e543d97	1367	LMIC.netid = os_rlsbf4(&LMIC.frame[OFF_JA_NETID]) & 0xFFFFFF;
dudmuck	0:f2716e543d97	1368
dudmuck	0:f2716e543d97	1369	#if defined(CFG_eu868)
dudmuck	0:f2716e543d97	1370	initDefaultChannels(0);
dudmuck	0:f2716e543d97	1371	#endif
dudmuck	0:f2716e543d97	1372	if( dlen > LEN_JA ) {
dudmuck	0:f2716e543d97	1373	#if defined(CFG_us915)
dudmuck	0:f2716e543d97	1374	goto badframe;
dudmuck	0:f2716e543d97	1375	#endif
dudmuck	0:f2716e543d97	1376	dlen = OFF_CFLIST;
dudmuck	0:f2716e543d97	1377	for( u1_t chidx=3; chidx<8; chidx++, dlen+=3 ) {
dudmuck	0:f2716e543d97	1378	u4_t freq = convFreq(&LMIC.frame[dlen]);
dudmuck	0:f2716e543d97	1379	if( freq )
dudmuck	0:f2716e543d97	1380	LMIC_setupChannel(chidx, freq, 0, -1);
dudmuck	0:f2716e543d97	1381	}
dudmuck	0:f2716e543d97	1382	}
dudmuck	0:f2716e543d97	1383
dudmuck	0:f2716e543d97	1384	// already incremented when JOIN REQ got sent off
dudmuck	0:f2716e543d97	1385	aes_sessKeys(LMIC.devNonce-1, &LMIC.frame[OFF_JA_ARTNONCE], LMIC.nwkKey, LMIC.artKey);
dudmuck	0:f2716e543d97	1386	DO_DEVDB(LMIC.netid, netid);
dudmuck	0:f2716e543d97	1387	DO_DEVDB(LMIC.devaddr, devaddr);
dudmuck	0:f2716e543d97	1388	DO_DEVDB(LMIC.nwkKey, nwkkey);
dudmuck	0:f2716e543d97	1389	DO_DEVDB(LMIC.artKey, artkey);
dudmuck	0:f2716e543d97	1390
dudmuck	0:f2716e543d97	1391	EV(joininfo, INFO, (e_.arteui = MAIN::CDEV->getArtEui(),
dudmuck	0:f2716e543d97	1392	e_.deveui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1393	e_.devaddr = LMIC.devaddr,
dudmuck	0:f2716e543d97	1394	e_.oldaddr = oldaddr,
dudmuck	0:f2716e543d97	1395	e_.nonce = LMIC.devNonce-1,
dudmuck	0:f2716e543d97	1396	e_.mic = mic,
dudmuck	0:f2716e543d97	1397	e_.reason = ((LMIC.opmode & OP_REJOIN) != 0
dudmuck	0:f2716e543d97	1398	? EV::joininfo_t::REJOIN_ACCEPT
dudmuck	0:f2716e543d97	1399	: EV::joininfo_t::ACCEPT)));
dudmuck	0:f2716e543d97	1400
dudmuck	0:f2716e543d97	1401	ASSERT((LMIC.opmode & (OP_JOINING\|OP_REJOIN))!=0);
dudmuck	0:f2716e543d97	1402	if( (LMIC.opmode & OP_REJOIN) != 0 ) {
dudmuck	0:f2716e543d97	1403	// Lower DR every try below current UP DR
dudmuck	0:f2716e543d97	1404	LMIC.datarate = lowerDR(LMIC.datarate, LMIC.rejoinCnt);
dudmuck	0:f2716e543d97	1405	}
dudmuck	0:f2716e543d97	1406	LMIC.opmode &= ~(OP_JOINING\|OP_TRACK\|OP_REJOIN\|OP_TXRXPEND\|OP_PINGINI) \| OP_NEXTCHNL;
dudmuck	0:f2716e543d97	1407	stateJustJoined();
dudmuck	0:f2716e543d97	1408	reportEvent(EV_JOINED);
dudmuck	0:f2716e543d97	1409	return 1;
dudmuck	0:f2716e543d97	1410	}
dudmuck	0:f2716e543d97	1411
dudmuck	0:f2716e543d97	1412
dudmuck	0:f2716e543d97	1413	static void processRx2Jacc (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1414	if( LMIC.dataLen == 0 )
dudmuck	0:f2716e543d97	1415	LMIC.txrxFlags = 0; // nothing in 1st/2nd DN slot
dudmuck	0:f2716e543d97	1416	processJoinAccept();
dudmuck	0:f2716e543d97	1417	}
dudmuck	0:f2716e543d97	1418
dudmuck	0:f2716e543d97	1419
dudmuck	0:f2716e543d97	1420	static void setupRx2Jacc (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1421	LMIC.osjob.func = FUNC_ADDR(processRx2Jacc);
dudmuck	0:f2716e543d97	1422	setupRx2();
dudmuck	0:f2716e543d97	1423	}
dudmuck	0:f2716e543d97	1424
dudmuck	0:f2716e543d97	1425
dudmuck	0:f2716e543d97	1426	static void processRx1Jacc (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1427	if( LMIC.dataLen == 0 \|\| !processJoinAccept() )
dudmuck	0:f2716e543d97	1428	schedRx2(DELAY_JACC2_osticks, FUNC_ADDR(setupRx2Jacc));
dudmuck	0:f2716e543d97	1429	}
dudmuck	0:f2716e543d97	1430
dudmuck	0:f2716e543d97	1431
dudmuck	0:f2716e543d97	1432	static void setupRx1Jacc (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1433	setupRx1(FUNC_ADDR(processRx1Jacc));
dudmuck	0:f2716e543d97	1434	}
dudmuck	0:f2716e543d97	1435
dudmuck	0:f2716e543d97	1436
dudmuck	0:f2716e543d97	1437	static void jreqDone (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1438	txDone(DELAY_JACC1_osticks, FUNC_ADDR(setupRx1Jacc));
dudmuck	0:f2716e543d97	1439	}
dudmuck	0:f2716e543d97	1440
dudmuck	0:f2716e543d97	1441	// ======================================== Data frames
dudmuck	0:f2716e543d97	1442
dudmuck	0:f2716e543d97	1443	// Fwd decl.
dudmuck	0:f2716e543d97	1444	static bit_t processDnData(void);
dudmuck	0:f2716e543d97	1445
dudmuck	0:f2716e543d97	1446	static void processRx2DnDataDelay (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1447	processDnData();
dudmuck	0:f2716e543d97	1448	}
dudmuck	0:f2716e543d97	1449
dudmuck	0:f2716e543d97	1450	static void processRx2DnData (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1451	if( LMIC.dataLen == 0 ) {
dudmuck	0:f2716e543d97	1452	LMIC.txrxFlags = 0; // nothing in 1st/2nd DN slot
dudmuck	0:f2716e543d97	1453	// Delay callback processing to avoid up TX while gateway is txing our missed frame!
dudmuck	0:f2716e543d97	1454	// Since DNW2 uses SF12 by default we wait 3 secs.
dudmuck	0:f2716e543d97	1455	os_setTimedCallback(&LMIC.osjob,
dudmuck	0:f2716e543d97	1456	(os_getTime() + DNW2_SAFETY_ZONE + rndDelay(2)),
dudmuck	0:f2716e543d97	1457	processRx2DnDataDelay);
dudmuck	0:f2716e543d97	1458	return;
dudmuck	0:f2716e543d97	1459	}
dudmuck	0:f2716e543d97	1460	processDnData();
dudmuck	0:f2716e543d97	1461	}
dudmuck	0:f2716e543d97	1462
dudmuck	0:f2716e543d97	1463
dudmuck	0:f2716e543d97	1464	static void setupRx2DnData (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1465	LMIC.osjob.func = FUNC_ADDR(processRx2DnData);
dudmuck	0:f2716e543d97	1466	setupRx2();
dudmuck	0:f2716e543d97	1467	}
dudmuck	0:f2716e543d97	1468
dudmuck	0:f2716e543d97	1469
dudmuck	0:f2716e543d97	1470	static void processRx1DnData (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1471	if( LMIC.dataLen == 0 \|\| !processDnData() )
dudmuck	0:f2716e543d97	1472	schedRx2(DELAY_DNW2_osticks, FUNC_ADDR(setupRx2DnData));
dudmuck	0:f2716e543d97	1473	}
dudmuck	0:f2716e543d97	1474
dudmuck	0:f2716e543d97	1475
dudmuck	0:f2716e543d97	1476	static void setupRx1DnData (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1477	setupRx1(FUNC_ADDR(processRx1DnData));
dudmuck	0:f2716e543d97	1478	}
dudmuck	0:f2716e543d97	1479
dudmuck	0:f2716e543d97	1480
dudmuck	0:f2716e543d97	1481	static void updataDone (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1482	txDone(DELAY_DNW1_osticks, FUNC_ADDR(setupRx1DnData));
dudmuck	0:f2716e543d97	1483	}
dudmuck	0:f2716e543d97	1484
dudmuck	0:f2716e543d97	1485	// ========================================
dudmuck	0:f2716e543d97	1486
dudmuck	0:f2716e543d97	1487
dudmuck	0:f2716e543d97	1488	static void buildDataFrame (void) {
dudmuck	0:f2716e543d97	1489	bit_t txdata = ((LMIC.opmode & (OP_TXDATA\|OP_POLL)) != OP_POLL);
dudmuck	0:f2716e543d97	1490	u1_t dlen = txdata ? LMIC.pendTxLen : 0;
dudmuck	0:f2716e543d97	1491
dudmuck	0:f2716e543d97	1492	// Piggyback MAC options
dudmuck	0:f2716e543d97	1493	// Prioritize by importance
dudmuck	0:f2716e543d97	1494	int end = OFF_DAT_OPTS;
dudmuck	0:f2716e543d97	1495	if( (LMIC.opmode & (OP_TRACK\|OP_PINGABLE)) == (OP_TRACK\|OP_PINGABLE) ) {
dudmuck	0:f2716e543d97	1496	// Indicate pingability in every UP frame
dudmuck	0:f2716e543d97	1497	LMIC.frame[end] = MCMD_PING_IND;
dudmuck	0:f2716e543d97	1498	LMIC.frame[end+1] = LMIC.ping.dr \| (LMIC.ping.intvExp<<4);
dudmuck	0:f2716e543d97	1499	end += 2;
dudmuck	0:f2716e543d97	1500	}
dudmuck	0:f2716e543d97	1501	if( LMIC.dutyCapAns ) {
dudmuck	0:f2716e543d97	1502	LMIC.frame[end] = MCMD_DCAP_ANS;
dudmuck	0:f2716e543d97	1503	end += 1;
dudmuck	0:f2716e543d97	1504	LMIC.dutyCapAns = 0;
dudmuck	0:f2716e543d97	1505	}
dudmuck	0:f2716e543d97	1506	if( LMIC.dn2Ans ) {
dudmuck	0:f2716e543d97	1507	LMIC.frame[end+0] = MCMD_DN2P_ANS;
dudmuck	0:f2716e543d97	1508	LMIC.frame[end+1] = LMIC.dn2Ans & ~MCMD_DN2P_ANS_RFU;
dudmuck	0:f2716e543d97	1509	end += 2;
dudmuck	0:f2716e543d97	1510	LMIC.dn2Ans = 0;
dudmuck	0:f2716e543d97	1511	}
dudmuck	0:f2716e543d97	1512	if( LMIC.devsAns ) { // answer to device status
dudmuck	0:f2716e543d97	1513	LMIC.frame[end+0] = MCMD_DEVS_ANS;
dudmuck	0:f2716e543d97	1514	LMIC.frame[end+1] = LMIC.margin;
dudmuck	0:f2716e543d97	1515	LMIC.frame[end+2] = os_getBattLevel();
dudmuck	0:f2716e543d97	1516	end += 3;
dudmuck	0:f2716e543d97	1517	LMIC.devsAns = 0;
dudmuck	0:f2716e543d97	1518	}
dudmuck	0:f2716e543d97	1519	if( LMIC.ladrAns ) { // answer to ADR change
dudmuck	0:f2716e543d97	1520	LMIC.frame[end+0] = MCMD_LADR_ANS;
dudmuck	0:f2716e543d97	1521	LMIC.frame[end+1] = LMIC.ladrAns & ~MCMD_LADR_ANS_RFU;
dudmuck	0:f2716e543d97	1522	end += 2;
dudmuck	0:f2716e543d97	1523	LMIC.ladrAns = 0;
dudmuck	0:f2716e543d97	1524	}
dudmuck	0:f2716e543d97	1525	if( LMIC.bcninfoTries > 0 ) {
dudmuck	0:f2716e543d97	1526	LMIC.frame[end] = MCMD_BCNI_REQ;
dudmuck	0:f2716e543d97	1527	end += 1;
dudmuck	0:f2716e543d97	1528	}
dudmuck	0:f2716e543d97	1529	if( LMIC.adrChanged ) {
dudmuck	0:f2716e543d97	1530	if( LMIC.adrAckReq < 0 )
dudmuck	0:f2716e543d97	1531	LMIC.adrAckReq = 0;
dudmuck	0:f2716e543d97	1532	LMIC.adrChanged = 0;
dudmuck	0:f2716e543d97	1533	}
dudmuck	0:f2716e543d97	1534	if( LMIC.pingSetAns != 0 ) {
dudmuck	0:f2716e543d97	1535	LMIC.frame[end+0] = MCMD_PING_ANS;
dudmuck	0:f2716e543d97	1536	LMIC.frame[end+1] = LMIC.pingSetAns & ~MCMD_PING_ANS_RFU;
dudmuck	0:f2716e543d97	1537	end += 2;
dudmuck	0:f2716e543d97	1538	LMIC.pingSetAns = 0;
dudmuck	0:f2716e543d97	1539	}
dudmuck	0:f2716e543d97	1540	if( LMIC.snchAns ) {
dudmuck	0:f2716e543d97	1541	LMIC.frame[end+0] = MCMD_SNCH_ANS;
dudmuck	0:f2716e543d97	1542	LMIC.frame[end+1] = LMIC.snchAns & ~MCMD_SNCH_ANS_RFU;
dudmuck	0:f2716e543d97	1543	end += 2;
dudmuck	0:f2716e543d97	1544	LMIC.snchAns = 0;
dudmuck	0:f2716e543d97	1545	}
dudmuck	0:f2716e543d97	1546	ASSERT(end <= OFF_DAT_OPTS+16);
dudmuck	0:f2716e543d97	1547
dudmuck	0:f2716e543d97	1548	u1_t flen = end + (txdata ? 5+dlen : 4);
dudmuck	0:f2716e543d97	1549	if( flen > MAX_LEN_FRAME ) {
dudmuck	0:f2716e543d97	1550	// Options and payload too big - delay payload
dudmuck	0:f2716e543d97	1551	txdata = 0;
dudmuck	0:f2716e543d97	1552	flen = end+4;
dudmuck	0:f2716e543d97	1553	}
dudmuck	0:f2716e543d97	1554	LMIC.frame[OFF_DAT_HDR] = HDR_FTYPE_DAUP \| HDR_MAJOR_V1;
dudmuck	0:f2716e543d97	1555	LMIC.frame[OFF_DAT_FCT] = (LMIC.dnConf \| LMIC.adrEnabled
dudmuck	0:f2716e543d97	1556	\| (LMIC.adrAckReq >= 0 ? FCT_ADRARQ : 0)
dudmuck	0:f2716e543d97	1557	\| (end-OFF_DAT_OPTS));
dudmuck	0:f2716e543d97	1558	os_wlsbf4(LMIC.frame+OFF_DAT_ADDR, LMIC.devaddr);
dudmuck	0:f2716e543d97	1559
dudmuck	0:f2716e543d97	1560	if( LMIC.txCnt == 0 ) {
dudmuck	0:f2716e543d97	1561	LMIC.seqnoUp += 1;
dudmuck	0:f2716e543d97	1562	DO_DEVDB(LMIC.seqnoUp,seqnoUp);
dudmuck	0:f2716e543d97	1563	} else {
dudmuck	0:f2716e543d97	1564	EV(devCond, INFO, (e_.reason = EV::devCond_t::RE_TX,
dudmuck	0:f2716e543d97	1565	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1566	e_.info = LMIC.seqnoUp-1,
dudmuck	0:f2716e543d97	1567	e_.info2 = ((LMIC.txCnt+1) \|
dudmuck	0:f2716e543d97	1568	(DRADJUST[LMIC.txCnt+1] << 8) \|
dudmuck	0:f2716e543d97	1569	((LMIC.datarate\|DR_PAGE)<<16))));
dudmuck	0:f2716e543d97	1570	}
dudmuck	0:f2716e543d97	1571	os_wlsbf2(LMIC.frame+OFF_DAT_SEQNO, LMIC.seqnoUp-1);
dudmuck	0:f2716e543d97	1572
dudmuck	0:f2716e543d97	1573	// Clear pending DN confirmation
dudmuck	0:f2716e543d97	1574	LMIC.dnConf = 0;
dudmuck	0:f2716e543d97	1575
dudmuck	0:f2716e543d97	1576	if( txdata ) {
dudmuck	0:f2716e543d97	1577	if( LMIC.pendTxConf ) {
dudmuck	0:f2716e543d97	1578	// Confirmed only makes sense if we have a payload (or at least a port)
dudmuck	0:f2716e543d97	1579	LMIC.frame[OFF_DAT_HDR] = HDR_FTYPE_DCUP \| HDR_MAJOR_V1;
dudmuck	0:f2716e543d97	1580	if( LMIC.txCnt == 0 ) LMIC.txCnt = 1;
dudmuck	0:f2716e543d97	1581	}
dudmuck	0:f2716e543d97	1582	LMIC.frame[end] = LMIC.pendTxPort;
dudmuck	0:f2716e543d97	1583	os_copyMem(LMIC.frame+end+1, LMIC.pendTxData, dlen);
dudmuck	0:f2716e543d97	1584	aes_cipher(LMIC.pendTxPort==0 ? LMIC.nwkKey : LMIC.artKey,
dudmuck	0:f2716e543d97	1585	LMIC.devaddr, LMIC.seqnoUp-1,
dudmuck	0:f2716e543d97	1586	/up/0, LMIC.frame+end+1, dlen);
dudmuck	0:f2716e543d97	1587	}
dudmuck	0:f2716e543d97	1588	aes_appendMic(LMIC.nwkKey, LMIC.devaddr, LMIC.seqnoUp-1, /up/0, LMIC.frame, flen-4);
dudmuck	0:f2716e543d97	1589
dudmuck	0:f2716e543d97	1590	EV(dfinfo, DEBUG, (e_.deveui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1591	e_.devaddr = LMIC.devaddr,
dudmuck	0:f2716e543d97	1592	e_.seqno = LMIC.seqnoUp-1,
dudmuck	0:f2716e543d97	1593	e_.flags = (LMIC.pendTxPort < 0 ? EV::dfinfo_t::NOPORT : EV::dfinfo_t::NOP),
dudmuck	0:f2716e543d97	1594	e_.mic = Base::lsbf4(&LMIC.frame[flen-4]),
dudmuck	0:f2716e543d97	1595	e_.hdr = LMIC.frame[LORA::OFF_DAT_HDR],
dudmuck	0:f2716e543d97	1596	e_.fct = LMIC.frame[LORA::OFF_DAT_FCT],
dudmuck	0:f2716e543d97	1597	e_.port = LMIC.pendTxPort,
dudmuck	0:f2716e543d97	1598	e_.plen = txdata ? dlen : 0,
dudmuck	0:f2716e543d97	1599	e_.opts.length = end-LORA::OFF_DAT_OPTS,
dudmuck	0:f2716e543d97	1600	memcpy(&e_.opts[0], LMIC.frame+LORA::OFF_DAT_OPTS, end-LORA::OFF_DAT_OPTS)));
dudmuck	0:f2716e543d97	1601	LMIC.dataLen = flen;
dudmuck	0:f2716e543d97	1602	}
dudmuck	0:f2716e543d97	1603
dudmuck	0:f2716e543d97	1604
dudmuck	0:f2716e543d97	1605	// Callback from HAL during scan mode or when job timer expires.
dudmuck	0:f2716e543d97	1606	static void onBcnRx (xref2osjob_t job) {
dudmuck	0:f2716e543d97	1607	// If we arrive via job timer make sure to put radio to rest.
dudmuck	0:f2716e543d97	1608	os_radio(RADIO_RST);
dudmuck	0:f2716e543d97	1609	os_clearCallback(&LMIC.osjob);
dudmuck	0:f2716e543d97	1610	if( LMIC.dataLen == 0 ) {
dudmuck	0:f2716e543d97	1611	// Nothing received - timeout
dudmuck	0:f2716e543d97	1612	LMIC.opmode &= ~(OP_SCAN \| OP_TRACK);
dudmuck	0:f2716e543d97	1613	reportEvent(EV_SCAN_TIMEOUT);
dudmuck	0:f2716e543d97	1614	return;
dudmuck	0:f2716e543d97	1615	}
dudmuck	0:f2716e543d97	1616	if( decodeBeacon() <= 0 ) {
dudmuck	0:f2716e543d97	1617	// Something is wrong with the beacon - continue scan
dudmuck	0:f2716e543d97	1618	LMIC.dataLen = 0;
dudmuck	0:f2716e543d97	1619	os_radio(RADIO_RXON);
dudmuck	0:f2716e543d97	1620	os_setTimedCallback(&LMIC.osjob, LMIC.bcninfo.txtime, FUNC_ADDR(onBcnRx));
dudmuck	0:f2716e543d97	1621	return;
dudmuck	0:f2716e543d97	1622	}
dudmuck	0:f2716e543d97	1623	// Found our 1st beacon
dudmuck	0:f2716e543d97	1624	// We don't have a previous beacon to calc some drift - assume
dudmuck	0:f2716e543d97	1625	// an max error of 13ms = 128sec*100ppm which is roughly +/-100ppm
dudmuck	0:f2716e543d97	1626	calcBcnRxWindowFromMillis(13,1);
dudmuck	0:f2716e543d97	1627	LMIC.opmode &= ~OP_SCAN; // turn SCAN off
dudmuck	0:f2716e543d97	1628	LMIC.opmode \|= OP_TRACK; // auto enable tracking
dudmuck	0:f2716e543d97	1629	reportEvent(EV_BEACON_FOUND); // can be disabled in callback
dudmuck	0:f2716e543d97	1630	}
dudmuck	0:f2716e543d97	1631
dudmuck	0:f2716e543d97	1632
dudmuck	0:f2716e543d97	1633	// Enable receiver to listen to incoming beacons
dudmuck	0:f2716e543d97	1634	// netid defines when scan stops (any or specific beacon)
dudmuck	0:f2716e543d97	1635	// This mode ends with events: EV_SCAN_TIMEOUT/EV_SCAN_BEACON
dudmuck	0:f2716e543d97	1636	// Implicitely cancels any pending TX/RX transaction.
dudmuck	0:f2716e543d97	1637	// Also cancels an onpoing joining procedure.
dudmuck	0:f2716e543d97	1638	static void startScan (void) {
dudmuck	0:f2716e543d97	1639	ASSERT(LMIC.devaddr!=0 && (LMIC.opmode & OP_JOINING)==0);
dudmuck	0:f2716e543d97	1640	if( (LMIC.opmode & OP_SHUTDOWN) != 0 )
dudmuck	0:f2716e543d97	1641	return;
dudmuck	0:f2716e543d97	1642	// Cancel onging TX/RX transaction
dudmuck	0:f2716e543d97	1643	LMIC.txCnt = LMIC.dnConf = LMIC.bcninfo.flags = 0;
dudmuck	0:f2716e543d97	1644	LMIC.opmode = (LMIC.opmode \| OP_SCAN) & ~(OP_TXRXPEND);
dudmuck	0:f2716e543d97	1645	setBcnRxParams();
dudmuck	0:f2716e543d97	1646	LMIC.rxtime = LMIC.bcninfo.txtime = os_getTime() + sec2osticks(BCN_INTV_sec+1);
dudmuck	0:f2716e543d97	1647	os_setTimedCallback(&LMIC.osjob, LMIC.rxtime, FUNC_ADDR(onBcnRx));
dudmuck	0:f2716e543d97	1648	os_radio(RADIO_RXON);
dudmuck	0:f2716e543d97	1649	}
dudmuck	0:f2716e543d97	1650
dudmuck	0:f2716e543d97	1651
dudmuck	0:f2716e543d97	1652	bit_t LMIC_enableTracking (u1_t tryBcnInfo) {
dudmuck	0:f2716e543d97	1653	if( (LMIC.opmode & (OP_SCAN\|OP_TRACK\|OP_SHUTDOWN)) != 0 )
dudmuck	0:f2716e543d97	1654	return 0; // already in progress or failed to enable
dudmuck	0:f2716e543d97	1655	// If BCN info requested from NWK then app has to take are
dudmuck	0:f2716e543d97	1656	// of sending data up so that MCMD_BCNI_REQ can be attached.
dudmuck	0:f2716e543d97	1657	if( (LMIC.bcninfoTries = tryBcnInfo) == 0 )
dudmuck	0:f2716e543d97	1658	startScan();
dudmuck	0:f2716e543d97	1659	return 1; // enabled
dudmuck	0:f2716e543d97	1660	}
dudmuck	0:f2716e543d97	1661
dudmuck	0:f2716e543d97	1662
dudmuck	0:f2716e543d97	1663	void LMIC_disableTracking (void) {
dudmuck	0:f2716e543d97	1664	LMIC.opmode &= ~(OP_SCAN\|OP_TRACK);
dudmuck	0:f2716e543d97	1665	LMIC.bcninfoTries = 0;
dudmuck	0:f2716e543d97	1666	engineUpdate();
dudmuck	0:f2716e543d97	1667	}
dudmuck	0:f2716e543d97	1668
dudmuck	0:f2716e543d97	1669
dudmuck	0:f2716e543d97	1670	// ================================================================================
dudmuck	0:f2716e543d97	1671	//
dudmuck	0:f2716e543d97	1672	// Join stuff
dudmuck	0:f2716e543d97	1673	//
dudmuck	0:f2716e543d97	1674	// ================================================================================
dudmuck	0:f2716e543d97	1675
dudmuck	0:f2716e543d97	1676	static void buildJoinRequest (u1_t ftype) {
dudmuck	0:f2716e543d97	1677	// Do not use pendTxData since we might have a pending
dudmuck	0:f2716e543d97	1678	// user level frame in there. Use RX holding area instead.
dudmuck	0:f2716e543d97	1679	xref2u1_t d = LMIC.frame;
dudmuck	0:f2716e543d97	1680	d[OFF_JR_HDR] = ftype;
dudmuck	0:f2716e543d97	1681	os_getArtEui(d + OFF_JR_ARTEUI);
dudmuck	0:f2716e543d97	1682	os_getDevEui(d + OFF_JR_DEVEUI);
dudmuck	0:f2716e543d97	1683	os_wlsbf2(d + OFF_JR_DEVNONCE, LMIC.devNonce);
dudmuck	0:f2716e543d97	1684	aes_appendMic0(d, OFF_JR_MIC);
dudmuck	0:f2716e543d97	1685
dudmuck	0:f2716e543d97	1686	EV(joininfo,INFO,(e_.deveui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1687	e_.arteui = MAIN::CDEV->getArtEui(),
dudmuck	0:f2716e543d97	1688	e_.nonce = LMIC.devNonce,
dudmuck	0:f2716e543d97	1689	e_.oldaddr = LMIC.devaddr,
dudmuck	0:f2716e543d97	1690	e_.mic = Base::lsbf4(&d[LORA::OFF_JR_MIC]),
dudmuck	0:f2716e543d97	1691	e_.reason = ((LMIC.opmode & OP_REJOIN) != 0
dudmuck	0:f2716e543d97	1692	? EV::joininfo_t::REJOIN_REQUEST
dudmuck	0:f2716e543d97	1693	: EV::joininfo_t::REQUEST)));
dudmuck	0:f2716e543d97	1694	LMIC.dataLen = LEN_JR;
dudmuck	0:f2716e543d97	1695	LMIC.devNonce++;
dudmuck	0:f2716e543d97	1696	DO_DEVDB(LMIC.devNonce,devNonce);
dudmuck	0:f2716e543d97	1697	}
dudmuck	0:f2716e543d97	1698
dudmuck	0:f2716e543d97	1699	static void startJoining (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1700	reportEvent(EV_JOINING);
dudmuck	0:f2716e543d97	1701	}
dudmuck	0:f2716e543d97	1702
dudmuck	0:f2716e543d97	1703	// Start join procedure if not already joined.
dudmuck	0:f2716e543d97	1704	bit_t LMIC_startJoining (void) {
dudmuck	0:f2716e543d97	1705	if( LMIC.devaddr == 0 ) {
dudmuck	0:f2716e543d97	1706	// There should be no TX/RX going on
dudmuck	0:f2716e543d97	1707	ASSERT((LMIC.opmode & (OP_POLL\|OP_TXRXPEND)) == 0);
dudmuck	0:f2716e543d97	1708	// Lift any previous duty limitation
dudmuck	0:f2716e543d97	1709	LMIC.globalDutyRate = 0;
dudmuck	0:f2716e543d97	1710	// Cancel scanning
dudmuck	0:f2716e543d97	1711	LMIC.opmode &= ~(OP_SCAN\|OP_REJOIN\|OP_LINKDEAD\|OP_NEXTCHNL);
dudmuck	0:f2716e543d97	1712	// Setup state
dudmuck	0:f2716e543d97	1713	LMIC.rejoinCnt = LMIC.txCnt = LMIC.pendTxConf = 0;
dudmuck	0:f2716e543d97	1714	initJoinLoop();
dudmuck	0:f2716e543d97	1715	LMIC.opmode \|= OP_JOINING;
dudmuck	0:f2716e543d97	1716	// reportEvent will call engineUpdate which then starts sending JOIN REQUESTS
dudmuck	0:f2716e543d97	1717	os_setCallback(&LMIC.osjob, FUNC_ADDR(startJoining));
dudmuck	0:f2716e543d97	1718	return 1;
dudmuck	0:f2716e543d97	1719	}
dudmuck	0:f2716e543d97	1720	return 0; // already joined
dudmuck	0:f2716e543d97	1721	}
dudmuck	0:f2716e543d97	1722
dudmuck	0:f2716e543d97	1723
dudmuck	0:f2716e543d97	1724	// ================================================================================
dudmuck	0:f2716e543d97	1725	//
dudmuck	0:f2716e543d97	1726	//
dudmuck	0:f2716e543d97	1727	//
dudmuck	0:f2716e543d97	1728	// ================================================================================
dudmuck	0:f2716e543d97	1729
dudmuck	0:f2716e543d97	1730	static void processPingRx (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1731	if( LMIC.dataLen != 0 ) {
dudmuck	0:f2716e543d97	1732	LMIC.txrxFlags = TXRX_PING;
dudmuck	0:f2716e543d97	1733	if( decodeFrame() ) {
dudmuck	0:f2716e543d97	1734	reportEvent(EV_RXCOMPLETE);
dudmuck	0:f2716e543d97	1735	return;
dudmuck	0:f2716e543d97	1736	}
dudmuck	0:f2716e543d97	1737	}
dudmuck	0:f2716e543d97	1738	// Pick next ping slot
dudmuck	0:f2716e543d97	1739	engineUpdate();
dudmuck	0:f2716e543d97	1740	}
dudmuck	0:f2716e543d97	1741
dudmuck	0:f2716e543d97	1742
dudmuck	0:f2716e543d97	1743	static bit_t processDnData (void) {
dudmuck	0:f2716e543d97	1744	ASSERT((LMIC.opmode & OP_TXRXPEND)!=0);
dudmuck	0:f2716e543d97	1745
dudmuck	0:f2716e543d97	1746	if( LMIC.dataLen == 0 ) {
dudmuck	0:f2716e543d97	1747	norx:
dudmuck	0:f2716e543d97	1748	if( LMIC.txCnt != 0 ) {
dudmuck	0:f2716e543d97	1749	if( LMIC.txCnt < TXCONF_ATTEMPTS ) {
dudmuck	0:f2716e543d97	1750	LMIC.txCnt += 1;
dudmuck	0:f2716e543d97	1751	setDrTxpow(DRCHG_NOACK, lowerDR(LMIC.datarate, DRADJUST[LMIC.txCnt]), KEEP_TXPOW);
dudmuck	0:f2716e543d97	1752	// Schedule another retransmission
dudmuck	0:f2716e543d97	1753	txDelay(LMIC.rxtime, RETRY_PERIOD_secs);
dudmuck	0:f2716e543d97	1754	LMIC.opmode &= ~OP_TXRXPEND;
dudmuck	0:f2716e543d97	1755	engineUpdate();
dudmuck	0:f2716e543d97	1756	return 1;
dudmuck	0:f2716e543d97	1757	}
dudmuck	0:f2716e543d97	1758	LMIC.txrxFlags = TXRX_NACK \| TXRX_NOPORT;
dudmuck	0:f2716e543d97	1759	} else {
dudmuck	0:f2716e543d97	1760	// Nothing received - implies no port
dudmuck	0:f2716e543d97	1761	LMIC.txrxFlags = TXRX_NOPORT;
dudmuck	0:f2716e543d97	1762	}
dudmuck	0:f2716e543d97	1763	if( LMIC.adrAckReq != LINK_CHECK_OFF )
dudmuck	0:f2716e543d97	1764	LMIC.adrAckReq += 1;
dudmuck	0:f2716e543d97	1765	LMIC.dataBeg = LMIC.dataLen = 0;
dudmuck	0:f2716e543d97	1766	txcomplete:
dudmuck	0:f2716e543d97	1767	LMIC.opmode &= ~(OP_TXDATA\|OP_TXRXPEND);
dudmuck	0:f2716e543d97	1768	if( (LMIC.txrxFlags & (TXRX_DNW1\|TXRX_DNW2\|TXRX_PING)) != 0 && (LMIC.opmode & OP_LINKDEAD) != 0 ) {
dudmuck	0:f2716e543d97	1769	LMIC.opmode &= ~OP_LINKDEAD;
dudmuck	0:f2716e543d97	1770	reportEvent(EV_LINK_ALIVE);
dudmuck	0:f2716e543d97	1771	}
dudmuck	0:f2716e543d97	1772	reportEvent(EV_TXCOMPLETE);
dudmuck	0:f2716e543d97	1773	// If we haven't heard from NWK in a while although we asked for a sign
dudmuck	0:f2716e543d97	1774	// assume link is dead - notify application and keep going
dudmuck	0:f2716e543d97	1775	if( LMIC.adrAckReq > LINK_CHECK_DEAD ) {
dudmuck	0:f2716e543d97	1776	// We haven't heard from NWK for some time although we
dudmuck	0:f2716e543d97	1777	// asked for a response for some time - assume we're disconnected. Lower DR one notch.
dudmuck	0:f2716e543d97	1778	EV(devCond, ERR, (e_.reason = EV::devCond_t::LINK_DEAD,
dudmuck	0:f2716e543d97	1779	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1780	e_.info = LMIC.adrAckReq));
dudmuck	0:f2716e543d97	1781	setDrTxpow(DRCHG_NOADRACK, decDR((dr_t)LMIC.datarate), KEEP_TXPOW);
dudmuck	0:f2716e543d97	1782	LMIC.adrAckReq = LINK_CHECK_CONT;
dudmuck	0:f2716e543d97	1783	LMIC.opmode \|= OP_REJOIN\|OP_LINKDEAD;
dudmuck	0:f2716e543d97	1784	reportEvent(EV_LINK_DEAD);
dudmuck	0:f2716e543d97	1785	}
dudmuck	0:f2716e543d97	1786	// If this falls to zero the NWK did not answer our MCMD_BCNI_REQ commands - try full scan
dudmuck	0:f2716e543d97	1787	if( LMIC.bcninfoTries > 0 ) {
dudmuck	0:f2716e543d97	1788	if( (LMIC.opmode & OP_TRACK) != 0 ) {
dudmuck	0:f2716e543d97	1789	reportEvent(EV_BEACON_FOUND);
dudmuck	0:f2716e543d97	1790	LMIC.bcninfoTries = 0;
dudmuck	0:f2716e543d97	1791	}
dudmuck	0:f2716e543d97	1792	else if( --LMIC.bcninfoTries == 0 ) {
dudmuck	0:f2716e543d97	1793	startScan(); // NWK did not answer - try scan
dudmuck	0:f2716e543d97	1794	}
dudmuck	0:f2716e543d97	1795	}
dudmuck	0:f2716e543d97	1796	return 1;
dudmuck	0:f2716e543d97	1797	}
dudmuck	0:f2716e543d97	1798	if( !decodeFrame() ) {
dudmuck	0:f2716e543d97	1799	if( (LMIC.txrxFlags & TXRX_DNW1) != 0 )
dudmuck	0:f2716e543d97	1800	return 0;
dudmuck	0:f2716e543d97	1801	goto norx;
dudmuck	0:f2716e543d97	1802	}
dudmuck	0:f2716e543d97	1803	goto txcomplete;
dudmuck	0:f2716e543d97	1804	}
dudmuck	0:f2716e543d97	1805
dudmuck	0:f2716e543d97	1806
dudmuck	0:f2716e543d97	1807	static void processBeacon (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1808	ostime_t lasttx = LMIC.bcninfo.txtime; // save here - decodeBeacon might overwrite
dudmuck	0:f2716e543d97	1809	u1_t flags = LMIC.bcninfo.flags;
dudmuck	0:f2716e543d97	1810	ev_t ev;
dudmuck	0:f2716e543d97	1811
dudmuck	0:f2716e543d97	1812	if( LMIC.dataLen != 0 && decodeBeacon() >= 1 ) {
dudmuck	0:f2716e543d97	1813	ev = EV_BEACON_TRACKED;
dudmuck	0:f2716e543d97	1814	if( (flags & (BCN_PARTIAL\|BCN_FULL)) == 0 ) {
dudmuck	0:f2716e543d97	1815	// We don't have a previous beacon to calc some drift - assume
dudmuck	0:f2716e543d97	1816	// an max error of 13ms = 128sec*100ppm which is roughly +/-100ppm
dudmuck	0:f2716e543d97	1817	calcBcnRxWindowFromMillis(13,0);
dudmuck	0:f2716e543d97	1818	goto rev;
dudmuck	0:f2716e543d97	1819	}
dudmuck	0:f2716e543d97	1820	// We have a previous BEACON to calculate some drift
dudmuck	0:f2716e543d97	1821	s2_t drift = BCN_INTV_osticks - (LMIC.bcninfo.txtime - lasttx);
dudmuck	0:f2716e543d97	1822	if( LMIC.missedBcns > 0 ) {
dudmuck	0:f2716e543d97	1823	drift = LMIC.drift + (drift - LMIC.drift) / (LMIC.missedBcns+1);
dudmuck	0:f2716e543d97	1824	}
dudmuck	0:f2716e543d97	1825	if( (LMIC.bcninfo.flags & BCN_NODRIFT) == 0 ) {
dudmuck	0:f2716e543d97	1826	s2_t diff = LMIC.drift - drift;
dudmuck	0:f2716e543d97	1827	if( diff < 0 ) diff = -diff;
dudmuck	0:f2716e543d97	1828	LMIC.lastDriftDiff = diff;
dudmuck	0:f2716e543d97	1829	if( LMIC.maxDriftDiff < diff )
dudmuck	0:f2716e543d97	1830	LMIC.maxDriftDiff = diff;
dudmuck	0:f2716e543d97	1831	LMIC.bcninfo.flags &= ~BCN_NODDIFF;
dudmuck	0:f2716e543d97	1832	}
dudmuck	0:f2716e543d97	1833	LMIC.drift = drift;
dudmuck	0:f2716e543d97	1834	LMIC.missedBcns = LMIC.rejoinCnt = 0;
dudmuck	0:f2716e543d97	1835	LMIC.bcninfo.flags &= ~BCN_NODRIFT;
dudmuck	0:f2716e543d97	1836	EV(devCond,INFO,(e_.reason = EV::devCond_t::CLOCK_DRIFT,
dudmuck	0:f2716e543d97	1837	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1838	e_.info = drift,
dudmuck	0:f2716e543d97	1839	e_.info2 = /occasion BEACON/0));
dudmuck	0:f2716e543d97	1840	ASSERT((LMIC.bcninfo.flags & (BCN_PARTIAL\|BCN_FULL)) != 0);
dudmuck	0:f2716e543d97	1841	} else {
dudmuck	0:f2716e543d97	1842	ev = EV_BEACON_MISSED;
dudmuck	0:f2716e543d97	1843	LMIC.bcninfo.txtime += BCN_INTV_osticks - LMIC.drift;
dudmuck	0:f2716e543d97	1844	LMIC.bcninfo.time += BCN_INTV_sec;
dudmuck	0:f2716e543d97	1845	LMIC.missedBcns++;
dudmuck	0:f2716e543d97	1846	// Delay any possible TX after surmised beacon - it's there although we missed it
dudmuck	0:f2716e543d97	1847	txDelay(LMIC.bcninfo.txtime + BCN_RESERVE_osticks, 4);
dudmuck	0:f2716e543d97	1848	if( LMIC.missedBcns > MAX_MISSED_BCNS )
dudmuck	0:f2716e543d97	1849	LMIC.opmode \|= OP_REJOIN; // try if we can roam to another network
dudmuck	0:f2716e543d97	1850	if( LMIC.bcnRxsyms > MAX_RXSYMS ) {
dudmuck	0:f2716e543d97	1851	LMIC.opmode &= ~(OP_TRACK\|OP_PINGABLE\|OP_PINGINI\|OP_REJOIN);
dudmuck	0:f2716e543d97	1852	reportEvent(EV_LOST_TSYNC);
dudmuck	0:f2716e543d97	1853	return;
dudmuck	0:f2716e543d97	1854	}
dudmuck	0:f2716e543d97	1855	}
dudmuck	0:f2716e543d97	1856	LMIC.bcnRxtime = LMIC.bcninfo.txtime + BCN_INTV_osticks - calcRxWindow(0,DR_BCN);
dudmuck	0:f2716e543d97	1857	LMIC.bcnRxsyms = LMIC.rxsyms;
dudmuck	0:f2716e543d97	1858	rev:
dudmuck	0:f2716e543d97	1859	#ifdef CFG_us915
dudmuck	0:f2716e543d97	1860	LMIC.bcnChnl = (LMIC.bcnChnl+1) & 7;
dudmuck	0:f2716e543d97	1861	#endif
dudmuck	0:f2716e543d97	1862	if( (LMIC.opmode & OP_PINGINI) != 0 )
dudmuck	0:f2716e543d97	1863	rxschedInit(&LMIC.ping); // note: reuses LMIC.frame buffer!
dudmuck	0:f2716e543d97	1864	reportEvent(ev);
dudmuck	0:f2716e543d97	1865	}
dudmuck	0:f2716e543d97	1866
dudmuck	0:f2716e543d97	1867
dudmuck	0:f2716e543d97	1868	static void startRxBcn (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1869	LMIC.osjob.func = FUNC_ADDR(processBeacon);
dudmuck	0:f2716e543d97	1870	os_radio(RADIO_RX);
dudmuck	0:f2716e543d97	1871	}
dudmuck	0:f2716e543d97	1872
dudmuck	0:f2716e543d97	1873
dudmuck	0:f2716e543d97	1874	static void startRxPing (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1875	LMIC.osjob.func = FUNC_ADDR(processPingRx);
dudmuck	0:f2716e543d97	1876	os_radio(RADIO_RX);
dudmuck	0:f2716e543d97	1877	}
dudmuck	0:f2716e543d97	1878
dudmuck	0:f2716e543d97	1879
dudmuck	0:f2716e543d97	1880	// Decide what to do next for the MAC layer of a device
dudmuck	0:f2716e543d97	1881	static void engineUpdate (void) {
dudmuck	0:f2716e543d97	1882	// Check for ongoing state: scan or TX/RX transaction
dudmuck	0:f2716e543d97	1883	if( (LMIC.opmode & (OP_SCAN\|OP_TXRXPEND\|OP_SHUTDOWN)) != 0 )
dudmuck	0:f2716e543d97	1884	return;
dudmuck	0:f2716e543d97	1885
dudmuck	0:f2716e543d97	1886	if( LMIC.devaddr == 0 && (LMIC.opmode & OP_JOINING) == 0 ) {
dudmuck	0:f2716e543d97	1887	LMIC_startJoining();
dudmuck	0:f2716e543d97	1888	return;
dudmuck	0:f2716e543d97	1889	}
dudmuck	0:f2716e543d97	1890
dudmuck	0:f2716e543d97	1891	ostime_t now = os_getTime();
dudmuck	0:f2716e543d97	1892	ostime_t rxtime = 0;
dudmuck	0:f2716e543d97	1893	ostime_t txbeg = 0;
dudmuck	0:f2716e543d97	1894
dudmuck	0:f2716e543d97	1895	if( (LMIC.opmode & OP_TRACK) != 0 ) {
dudmuck	0:f2716e543d97	1896	// We are tracking a beacon
dudmuck	0:f2716e543d97	1897	ASSERT( now + RX_RAMPUP - LMIC.bcnRxtime <= 0 );
dudmuck	0:f2716e543d97	1898	rxtime = LMIC.bcnRxtime - RX_RAMPUP;
dudmuck	0:f2716e543d97	1899	}
dudmuck	0:f2716e543d97	1900
dudmuck	0:f2716e543d97	1901	if( (LMIC.opmode & (OP_JOINING\|OP_REJOIN\|OP_TXDATA\|OP_POLL)) != 0 ) {
dudmuck	0:f2716e543d97	1902	// Need to TX some data...
dudmuck	0:f2716e543d97	1903	// Assuming txChnl points to channel which first becomes available again.
dudmuck	0:f2716e543d97	1904	bit_t jacc = ((LMIC.opmode & (OP_JOINING\|OP_REJOIN)) != 0 ? 1 : 0);
dudmuck	0:f2716e543d97	1905	// Find next suitable channel and return availability time
dudmuck	0:f2716e543d97	1906	if( (LMIC.opmode & OP_NEXTCHNL) != 0 ) {
dudmuck	0:f2716e543d97	1907	txbeg = LMIC.txend = nextTx(now);
dudmuck	0:f2716e543d97	1908	LMIC.opmode &= ~OP_NEXTCHNL;
dudmuck	0:f2716e543d97	1909	} else {
dudmuck	0:f2716e543d97	1910	txbeg = LMIC.txend;
dudmuck	0:f2716e543d97	1911	}
dudmuck	0:f2716e543d97	1912	// Delayed TX or waiting for duty cycle?
dudmuck	0:f2716e543d97	1913	if( (LMIC.globalDutyRate != 0 \|\| (LMIC.opmode & OP_RNDTX) != 0) && (txbeg - LMIC.globalDutyAvail) < 0 )
dudmuck	0:f2716e543d97	1914	txbeg = LMIC.globalDutyAvail;
dudmuck	0:f2716e543d97	1915	// If we're tracking a beacon...
dudmuck	0:f2716e543d97	1916	// then make sure TX-RX transaction is complete before beacon
dudmuck	0:f2716e543d97	1917	if( (LMIC.opmode & OP_TRACK) != 0 &&
dudmuck	0:f2716e543d97	1918	txbeg + (jacc ? JOIN_GUARD_osticks : TXRX_GUARD_osticks) - rxtime > 0 ) {
dudmuck	0:f2716e543d97	1919	// Not enough time to complete TX-RX before beacon - postpone after beacon.
dudmuck	0:f2716e543d97	1920	// In order to avoid clustering of postponed TX right after beacon randomize start!
dudmuck	0:f2716e543d97	1921	txDelay(rxtime + BCN_RESERVE_osticks, 16);
dudmuck	0:f2716e543d97	1922	txbeg = 0;
dudmuck	0:f2716e543d97	1923	goto checkrx;
dudmuck	0:f2716e543d97	1924	}
dudmuck	0:f2716e543d97	1925	// Earliest possible time vs overhead to setup radio
dudmuck	0:f2716e543d97	1926	if( txbeg - (now + TX_RAMPUP) < 0 ) {
dudmuck	0:f2716e543d97	1927	// We could send right now!
dudmuck	0:f2716e543d97	1928	txbeg = now;
dudmuck	0:f2716e543d97	1929	dr_t txdr = (dr_t)LMIC.datarate;
dudmuck	0:f2716e543d97	1930	if( jacc ) {
dudmuck	0:f2716e543d97	1931	u1_t ftype;
dudmuck	0:f2716e543d97	1932	if( (LMIC.opmode & OP_REJOIN) != 0 ) {
dudmuck	0:f2716e543d97	1933	txdr = lowerDR(txdr, LMIC.rejoinCnt);
dudmuck	0:f2716e543d97	1934	ftype = HDR_FTYPE_REJOIN;
dudmuck	0:f2716e543d97	1935	} else {
dudmuck	0:f2716e543d97	1936	ftype = HDR_FTYPE_JREQ;
dudmuck	0:f2716e543d97	1937	}
dudmuck	0:f2716e543d97	1938	buildJoinRequest(ftype);
dudmuck	0:f2716e543d97	1939	LMIC.osjob.func = FUNC_ADDR(jreqDone);
dudmuck	0:f2716e543d97	1940	} else {
dudmuck	0:f2716e543d97	1941	if( LMIC.seqnoDn >= 0xFFFFFF80 ) {
dudmuck	0:f2716e543d97	1942	// Imminent roll over - proactively reset MAC
dudmuck	0:f2716e543d97	1943	EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_ROLL_OVER,
dudmuck	0:f2716e543d97	1944	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1945	e_.info = LMIC.seqnoDn,
dudmuck	0:f2716e543d97	1946	e_.info2 = 0));
dudmuck	0:f2716e543d97	1947	// Device has to react! NWK will not roll over and just stop sending.
dudmuck	0:f2716e543d97	1948	// Thus, we have N frames to detect a possible lock up.
dudmuck	0:f2716e543d97	1949	reset:
dudmuck	0:f2716e543d97	1950	os_setCallback(&LMIC.osjob, FUNC_ADDR(runReset));
dudmuck	0:f2716e543d97	1951	return;
dudmuck	0:f2716e543d97	1952	}
dudmuck	0:f2716e543d97	1953	if( (LMIC.txCnt==0 && LMIC.seqnoUp == 0xFFFFFFFF) ) {
dudmuck	0:f2716e543d97	1954	// Roll over of up seq counter
dudmuck	0:f2716e543d97	1955	EV(specCond, ERR, (e_.reason = EV::specCond_t::UPSEQNO_ROLL_OVER,
dudmuck	0:f2716e543d97	1956	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1957	e_.info2 = LMIC.seqnoUp));
dudmuck	0:f2716e543d97	1958	// Do not run RESET event callback from here!
dudmuck	0:f2716e543d97	1959	// App code might do some stuff after send unaware of RESET.
dudmuck	0:f2716e543d97	1960	goto reset;
dudmuck	0:f2716e543d97	1961	}
dudmuck	0:f2716e543d97	1962	buildDataFrame();
dudmuck	0:f2716e543d97	1963	LMIC.osjob.func = FUNC_ADDR(updataDone);
dudmuck	0:f2716e543d97	1964	}
dudmuck	0:f2716e543d97	1965	LMIC.rps = setCr(updr2rps(txdr), (cr_t)LMIC.errcr);
dudmuck	0:f2716e543d97	1966	LMIC.dndr = txdr; // carry TX datarate (can be != LMIC.datarate) over to txDone/setupRx1
dudmuck	0:f2716e543d97	1967	LMIC.opmode = (LMIC.opmode & ~(OP_POLL\|OP_RNDTX)) \| OP_TXRXPEND \| OP_NEXTCHNL;
dudmuck	0:f2716e543d97	1968	updateTx(txbeg);
dudmuck	0:f2716e543d97	1969	os_radio(RADIO_TX);
dudmuck	0:f2716e543d97	1970	return;
dudmuck	0:f2716e543d97	1971	}
dudmuck	0:f2716e543d97	1972	// Cannot yet TX
dudmuck	0:f2716e543d97	1973	if( (LMIC.opmode & OP_TRACK) == 0 )
dudmuck	0:f2716e543d97	1974	goto txdelay; // We don't track the beacon - nothing else to do - so wait for the time to TX
dudmuck	0:f2716e543d97	1975	// Consider RX tasks
dudmuck	0:f2716e543d97	1976	if( txbeg == 0 ) // zero indicates no TX pending
dudmuck	0:f2716e543d97	1977	txbeg += 1; // TX delayed by one tick (insignificant amount of time)
dudmuck	0:f2716e543d97	1978	} else {
dudmuck	0:f2716e543d97	1979	// No TX pending - no scheduled RX
dudmuck	0:f2716e543d97	1980	if( (LMIC.opmode & OP_TRACK) == 0 )
dudmuck	0:f2716e543d97	1981	return;
dudmuck	0:f2716e543d97	1982	}
dudmuck	0:f2716e543d97	1983
dudmuck	0:f2716e543d97	1984	// Are we pingable?
dudmuck	0:f2716e543d97	1985	checkrx:
dudmuck	0:f2716e543d97	1986	if( (LMIC.opmode & OP_PINGINI) != 0 ) {
dudmuck	0:f2716e543d97	1987	// One more RX slot in this beacon period?
dudmuck	0:f2716e543d97	1988	if( rxschedNext(&LMIC.ping, now+RX_RAMPUP) ) {
dudmuck	0:f2716e543d97	1989	if( txbeg != 0 && (txbeg - LMIC.ping.rxtime) < 0 )
dudmuck	0:f2716e543d97	1990	goto txdelay;
dudmuck	0:f2716e543d97	1991	LMIC.rxsyms = LMIC.ping.rxsyms;
dudmuck	0:f2716e543d97	1992	LMIC.rxtime = LMIC.ping.rxtime;
dudmuck	0:f2716e543d97	1993	LMIC.freq = LMIC.ping.freq;
dudmuck	0:f2716e543d97	1994	LMIC.rps = dndr2rps(LMIC.ping.dr);
dudmuck	0:f2716e543d97	1995	LMIC.dataLen = 0;
dudmuck	0:f2716e543d97	1996	ASSERT(LMIC.rxtime - now+RX_RAMPUP >= 0 );
dudmuck	0:f2716e543d97	1997	os_setTimedCallback(&LMIC.osjob, LMIC.rxtime - RX_RAMPUP, FUNC_ADDR(startRxPing));
dudmuck	0:f2716e543d97	1998	return;
dudmuck	0:f2716e543d97	1999	}
dudmuck	0:f2716e543d97	2000	// no - just wait for the beacon
dudmuck	0:f2716e543d97	2001	}
dudmuck	0:f2716e543d97	2002
dudmuck	0:f2716e543d97	2003	if( txbeg != 0 && (txbeg - rxtime) < 0 )
dudmuck	0:f2716e543d97	2004	goto txdelay;
dudmuck	0:f2716e543d97	2005
dudmuck	0:f2716e543d97	2006	setBcnRxParams();
dudmuck	0:f2716e543d97	2007	LMIC.rxsyms = LMIC.bcnRxsyms;
dudmuck	0:f2716e543d97	2008	LMIC.rxtime = LMIC.bcnRxtime;
dudmuck	0:f2716e543d97	2009	if( now - rxtime >= 0 ) {
dudmuck	0:f2716e543d97	2010	LMIC.osjob.func = FUNC_ADDR(processBeacon);
dudmuck	0:f2716e543d97	2011	os_radio(RADIO_RX);
dudmuck	0:f2716e543d97	2012	return;
dudmuck	0:f2716e543d97	2013	}
dudmuck	0:f2716e543d97	2014	os_setTimedCallback(&LMIC.osjob, rxtime, FUNC_ADDR(startRxBcn));
dudmuck	0:f2716e543d97	2015	return;
dudmuck	0:f2716e543d97	2016
dudmuck	0:f2716e543d97	2017	txdelay:
dudmuck	0:f2716e543d97	2018	EV(devCond, INFO, (e_.reason = EV::devCond_t::TX_DELAY,
dudmuck	0:f2716e543d97	2019	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	2020	e_.info = osticks2ms(txbeg-now),
dudmuck	0:f2716e543d97	2021	e_.info2 = LMIC.seqnoUp-1));
dudmuck	0:f2716e543d97	2022	os_setTimedCallback(&LMIC.osjob, txbeg-TX_RAMPUP, FUNC_ADDR(runEngineUpdate));
dudmuck	0:f2716e543d97	2023	}
dudmuck	0:f2716e543d97	2024
dudmuck	0:f2716e543d97	2025
dudmuck	0:f2716e543d97	2026	void LMIC_setAdrMode (bit_t enabled) {
dudmuck	0:f2716e543d97	2027	LMIC.adrEnabled = enabled ? FCT_ADREN : 0;
dudmuck	0:f2716e543d97	2028	}
dudmuck	0:f2716e543d97	2029
dudmuck	0:f2716e543d97	2030
dudmuck	0:f2716e543d97	2031	// Should we have/need an ext. API like this?
dudmuck	0:f2716e543d97	2032	void LMIC_setDrTxpow (dr_t dr, s1_t txpow) {
dudmuck	0:f2716e543d97	2033	setDrTxpow(DRCHG_SET, dr, txpow);
dudmuck	0:f2716e543d97	2034	}
dudmuck	0:f2716e543d97	2035
dudmuck	0:f2716e543d97	2036
dudmuck	0:f2716e543d97	2037	void LMIC_shutdown (void) {
dudmuck	0:f2716e543d97	2038	os_clearCallback(&LMIC.osjob);
dudmuck	0:f2716e543d97	2039	os_radio(RADIO_RST);
dudmuck	0:f2716e543d97	2040	LMIC.opmode \|= OP_SHUTDOWN;
dudmuck	0:f2716e543d97	2041	}
dudmuck	0:f2716e543d97	2042
dudmuck	0:f2716e543d97	2043
dudmuck	0:f2716e543d97	2044	void LMIC_reset (void) {
dudmuck	0:f2716e543d97	2045	EV(devCond, INFO, (e_.reason = EV::devCond_t::LMIC_EV,
dudmuck	0:f2716e543d97	2046	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	2047	e_.info = EV_RESET));
dudmuck	0:f2716e543d97	2048	os_radio(RADIO_RST);
dudmuck	0:f2716e543d97	2049	os_clearCallback(&LMIC.osjob);
dudmuck	0:f2716e543d97	2050
dudmuck	0:f2716e543d97	2051	os_clearMem((xref2u1_t)&LMIC,SIZEOFEXPR(LMIC));
dudmuck	0:f2716e543d97	2052	LMIC.devaddr = 0;
dudmuck	0:f2716e543d97	2053	LMIC.devNonce = os_getRndU2();
dudmuck	0:f2716e543d97	2054	LMIC.opmode = OP_NONE;
dudmuck	0:f2716e543d97	2055	LMIC.errcr = CR_4_5;
dudmuck	0:f2716e543d97	2056	LMIC.adrEnabled = FCT_ADREN;
dudmuck	0:f2716e543d97	2057	LMIC.dn2Dr = DR_DNW2; // we need this for 2nd DN window of join accept
dudmuck	0:f2716e543d97	2058	LMIC.dn2Freq = FREQ_DNW2; // ditto
dudmuck	0:f2716e543d97	2059	LMIC.ping.freq = FREQ_PING; // defaults for ping
dudmuck	0:f2716e543d97	2060	LMIC.ping.dr = DR_PING; // ditto
dudmuck	0:f2716e543d97	2061	LMIC.ping.intvExp = 0xFF;
dudmuck	0:f2716e543d97	2062	#if defined(CFG_us915)
dudmuck	0:f2716e543d97	2063	initDefaultChannels();
dudmuck	0:f2716e543d97	2064	#endif
dudmuck	0:f2716e543d97	2065	DO_DEVDB(LMIC.devaddr, devaddr);
dudmuck	0:f2716e543d97	2066	DO_DEVDB(LMIC.devNonce, devNonce);
dudmuck	0:f2716e543d97	2067	DO_DEVDB(LMIC.dn2Dr, dn2Dr);
dudmuck	0:f2716e543d97	2068	DO_DEVDB(LMIC.dn2Freq, dn2Freq);
dudmuck	0:f2716e543d97	2069	DO_DEVDB(LMIC.ping.freq, pingFreq);
dudmuck	0:f2716e543d97	2070	DO_DEVDB(LMIC.ping.dr, pingDr);
dudmuck	0:f2716e543d97	2071	DO_DEVDB(LMIC.ping.intvExp, pingIntvExp);
dudmuck	0:f2716e543d97	2072	}
dudmuck	0:f2716e543d97	2073
dudmuck	0:f2716e543d97	2074
dudmuck	0:f2716e543d97	2075	void LMIC_init (void) {
dudmuck	0:f2716e543d97	2076	LMIC.opmode = OP_SHUTDOWN;
dudmuck	0:f2716e543d97	2077	}
dudmuck	0:f2716e543d97	2078
dudmuck	0:f2716e543d97	2079
dudmuck	0:f2716e543d97	2080	void LMIC_clrTxData (void) {
dudmuck	0:f2716e543d97	2081	LMIC.opmode &= ~(OP_TXDATA\|OP_TXRXPEND\|OP_POLL);
dudmuck	0:f2716e543d97	2082	LMIC.pendTxLen = 0;
dudmuck	0:f2716e543d97	2083	if( (LMIC.opmode & (OP_JOINING\|OP_SCAN)) != 0 ) // do not interfere with JOINING
dudmuck	0:f2716e543d97	2084	return;
dudmuck	0:f2716e543d97	2085	os_clearCallback(&LMIC.osjob);
dudmuck	0:f2716e543d97	2086	os_radio(RADIO_RST);
dudmuck	0:f2716e543d97	2087	engineUpdate();
dudmuck	0:f2716e543d97	2088	}
dudmuck	0:f2716e543d97	2089
dudmuck	0:f2716e543d97	2090
dudmuck	0:f2716e543d97	2091	void LMIC_setTxData (void) {
dudmuck	0:f2716e543d97	2092	LMIC.opmode \|= OP_TXDATA;
dudmuck	0:f2716e543d97	2093	if( (LMIC.opmode & OP_JOINING) == 0 )
dudmuck	0:f2716e543d97	2094	LMIC.txCnt = 0; // cancel any ongoing TX/RX retries
dudmuck	0:f2716e543d97	2095	engineUpdate();
dudmuck	0:f2716e543d97	2096	}
dudmuck	0:f2716e543d97	2097
dudmuck	0:f2716e543d97	2098
dudmuck	0:f2716e543d97	2099	//
dudmuck	0:f2716e543d97	2100	int LMIC_setTxData2 (u1_t port, xref2u1_t data, u1_t dlen, u1_t confirmed) {
dudmuck	0:f2716e543d97	2101	if( dlen > SIZEOFEXPR(LMIC.pendTxData) )
dudmuck	0:f2716e543d97	2102	return -2;
dudmuck	0:f2716e543d97	2103	if( data != (xref2u1_t)0 )
dudmuck	0:f2716e543d97	2104	os_copyMem(LMIC.pendTxData, data, dlen);
dudmuck	0:f2716e543d97	2105	LMIC.pendTxConf = confirmed;
dudmuck	0:f2716e543d97	2106	LMIC.pendTxPort = port;
dudmuck	0:f2716e543d97	2107	LMIC.pendTxLen = dlen;
dudmuck	0:f2716e543d97	2108	LMIC_setTxData();
dudmuck	0:f2716e543d97	2109	return 0;
dudmuck	0:f2716e543d97	2110	}
dudmuck	0:f2716e543d97	2111
dudmuck	0:f2716e543d97	2112
dudmuck	0:f2716e543d97	2113	// Send a payload-less message to signal device is alive
dudmuck	0:f2716e543d97	2114	void LMIC_sendAlive (void) {
dudmuck	0:f2716e543d97	2115	LMIC.opmode \|= OP_POLL;
dudmuck	0:f2716e543d97	2116	engineUpdate();
dudmuck	0:f2716e543d97	2117	}
dudmuck	0:f2716e543d97	2118
dudmuck	0:f2716e543d97	2119
dudmuck	0:f2716e543d97	2120	// Check if other networks are around.
dudmuck	0:f2716e543d97	2121	void LMIC_tryRejoin (void) {
dudmuck	0:f2716e543d97	2122	LMIC.opmode \|= OP_REJOIN;
dudmuck	0:f2716e543d97	2123	engineUpdate();
dudmuck	0:f2716e543d97	2124	}
dudmuck	0:f2716e543d97	2125
dudmuck	0:f2716e543d97	2126	//! \brief Setup given session keys
dudmuck	0:f2716e543d97	2127	//! and put the MAC in a state as if
dudmuck	0:f2716e543d97	2128	//! a join request/accept would have negotiated just these keys.
dudmuck	0:f2716e543d97	2129	//! It is crucial that the combinations `devaddr/nwkkey` and `devaddr/artkey`
dudmuck	0:f2716e543d97	2130	//! are unique within the network identified by `netid`.
dudmuck	0:f2716e543d97	2131	//! NOTE: on Harvard architectures when session keys are in flash:
dudmuck	0:f2716e543d97	2132	//! Caller has to fill in LMIC.{nwk,art}Key before and pass {nwk,art}Key are NULL
dudmuck	0:f2716e543d97	2133	//! \param netid a 24 bit number describing the network id this device is using
dudmuck	0:f2716e543d97	2134	//! \param devaddr the 32 bit session address of the device. It is strongly recommended
dudmuck	0:f2716e543d97	2135	//! to ensure that different devices use different numbers with high probability.
dudmuck	0:f2716e543d97	2136	//! \param nwkKey the 16 byte network session key used for message integrity.
dudmuck	0:f2716e543d97	2137	//! If NULL the caller has copied the key into `LMIC.nwkKey` before.
dudmuck	0:f2716e543d97	2138	//! \param artKey the 16 byte application router session key used for message confidentiality.
dudmuck	0:f2716e543d97	2139	//! If NULL the caller has copied the key into `LMIC.artKey` before.
dudmuck	0:f2716e543d97	2140	void LMIC_setSession (u4_t netid, devaddr_t devaddr, xref2u1_t nwkKey, xref2u1_t artKey) {
dudmuck	0:f2716e543d97	2141	LMIC.netid = netid;
dudmuck	0:f2716e543d97	2142	LMIC.devaddr = devaddr;
dudmuck	0:f2716e543d97	2143	if( nwkKey != (xref2u1_t)0 )
dudmuck	0:f2716e543d97	2144	os_copyMem(LMIC.nwkKey, nwkKey, 16);
dudmuck	0:f2716e543d97	2145	if( artKey != (xref2u1_t)0 )
dudmuck	0:f2716e543d97	2146	os_copyMem(LMIC.artKey, artKey, 16);
dudmuck	0:f2716e543d97	2147
dudmuck	0:f2716e543d97	2148	#if defined(CFG_eu868)
dudmuck	0:f2716e543d97	2149	initDefaultChannels(0);
dudmuck	0:f2716e543d97	2150	#endif
dudmuck	0:f2716e543d97	2151
dudmuck	0:f2716e543d97	2152	LMIC.opmode &= ~(OP_JOINING\|OP_TRACK\|OP_REJOIN\|OP_TXRXPEND\|OP_PINGINI);
dudmuck	0:f2716e543d97	2153	LMIC.opmode \|= OP_NEXTCHNL;
dudmuck	0:f2716e543d97	2154	stateJustJoined();
dudmuck	0:f2716e543d97	2155	DO_DEVDB(LMIC.netid, netid);
dudmuck	0:f2716e543d97	2156	DO_DEVDB(LMIC.devaddr, devaddr);
dudmuck	0:f2716e543d97	2157	DO_DEVDB(LMIC.nwkKey, nwkkey);
dudmuck	0:f2716e543d97	2158	DO_DEVDB(LMIC.artKey, artkey);
dudmuck	0:f2716e543d97	2159	DO_DEVDB(LMIC.seqnoUp, seqnoUp);
dudmuck	0:f2716e543d97	2160	DO_DEVDB(LMIC.seqnoDn, seqnoDn);
dudmuck	0:f2716e543d97	2161	}
dudmuck	0:f2716e543d97	2162
dudmuck	0:f2716e543d97	2163	// Enable/disable link check validation.
dudmuck	0:f2716e543d97	2164	// LMIC sets the ADRACKREQ bit in UP frames if there were no DN frames
dudmuck	0:f2716e543d97	2165	// for a while. It expects the network to provide a DN message to prove
dudmuck	0:f2716e543d97	2166	// connectivity with a span of UP frames. If this no such prove is coming
dudmuck	0:f2716e543d97	2167	// then the datarate is lowered and a LINK_DEAD event is generated.
dudmuck	0:f2716e543d97	2168	// This mode can be disabled and no connectivity prove (ADRACKREQ) is requested
dudmuck	0:f2716e543d97	2169	// nor is the datarate changed.
dudmuck	0:f2716e543d97	2170	// This must be called only if a session is established (e.g. after EV_JOINED)
dudmuck	0:f2716e543d97	2171	void LMIC_setLinkCheckMode (bit_t enabled) {
dudmuck	0:f2716e543d97	2172	LMIC.adrChanged = 0;
dudmuck	0:f2716e543d97	2173	LMIC.adrAckReq = enabled ? LINK_CHECK_INIT : LINK_CHECK_OFF;
dudmuck	0:f2716e543d97	2174	}
dudmuck	0:f2716e543d97	2175
dudmuck	0:f2716e543d97	2176

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Type:	Library
Created:	02 Jun 2015
Imports:	68
Forks:	2
Commits:	11
Dependents:	1
Dependencies:	0
Followers:	98

LoRaWAN network configuration for end-device

AppEUI

example C code

DevEUI

example C code

AppKey (aka DevKey)

example C code

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

Information

transmit power limits

lmic.cpp@0:f2716e543d97, 2015-06-02 (annotated)

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