LMiC - first test

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first test

lmic.cpp@5:464c1f2d6cbb, 2016-02-23 (annotated)

Committer:: tmulrooney
Date:: Tue Feb 23 15:34:27 2016 +0000
Revision:: 5:464c1f2d6cbb
Parent:: 4:85b2b647cb64
Child:: 6:eed5fd627a2b

first attempt

Who changed what in which revision?

User	Revision	Line number	New contents of line
mluis	0:62d1edcc13d1	1	/*******************************************************************************
mluis	1:d3b7bde3995c	2	* Copyright (c) 2014-2015 IBM Corporation.
mluis	0:62d1edcc13d1	3	* All rights reserved. This program and the accompanying materials
mluis	0:62d1edcc13d1	4	* are made available under the terms of the Eclipse Public License v1.0
mluis	0:62d1edcc13d1	5	* which accompanies this distribution, and is available at
mluis	0:62d1edcc13d1	6	* http://www.eclipse.org/legal/epl-v10.html
mluis	0:62d1edcc13d1	7	*
mluis	0:62d1edcc13d1	8	* Contributors:
mluis	0:62d1edcc13d1	9	* IBM Zurich Research Lab - initial API, implementation and documentation
mluis	0:62d1edcc13d1	10	*******************************************************************************/
mluis	0:62d1edcc13d1	11
mluis	1:d3b7bde3995c	12	//! \file
mluis	0:62d1edcc13d1	13	#include "lmic.h"
tmulrooney	5:464c1f2d6cbb	14	#include "debug.h"
mluis	0:62d1edcc13d1	15
mluis	1:d3b7bde3995c	16	#if !defined(MINRX_SYMS)
mluis	1:d3b7bde3995c	17	#define MINRX_SYMS 5
mluis	1:d3b7bde3995c	18	#endif // !defined(MINRX_SYMS)
mluis	0:62d1edcc13d1	19	#define PAMBL_SYMS 8
mluis	0:62d1edcc13d1	20	#define PAMBL_FSK 5
mluis	0:62d1edcc13d1	21	#define PRERX_FSK 1
mluis	0:62d1edcc13d1	22	#define RXLEN_FSK (1+5+2)
mluis	0:62d1edcc13d1	23
mluis	0:62d1edcc13d1	24	#define BCN_INTV_osticks sec2osticks(BCN_INTV_sec)
mluis	0:62d1edcc13d1	25	#define TXRX_GUARD_osticks ms2osticks(TXRX_GUARD_ms)
mluis	0:62d1edcc13d1	26	#define JOIN_GUARD_osticks ms2osticks(JOIN_GUARD_ms)
mluis	0:62d1edcc13d1	27	#define DELAY_DNW1_osticks sec2osticks(DELAY_DNW1)
mluis	0:62d1edcc13d1	28	#define DELAY_DNW2_osticks sec2osticks(DELAY_DNW2)
mluis	0:62d1edcc13d1	29	#define DELAY_JACC1_osticks sec2osticks(DELAY_JACC1)
mluis	0:62d1edcc13d1	30	#define DELAY_JACC2_osticks sec2osticks(DELAY_JACC2)
mluis	0:62d1edcc13d1	31	#define DELAY_EXTDNW2_osticks sec2osticks(DELAY_EXTDNW2)
mluis	0:62d1edcc13d1	32	#define BCN_RESERVE_osticks ms2osticks(BCN_RESERVE_ms)
mluis	0:62d1edcc13d1	33	#define BCN_GUARD_osticks ms2osticks(BCN_GUARD_ms)
mluis	0:62d1edcc13d1	34	#define BCN_WINDOW_osticks ms2osticks(BCN_WINDOW_ms)
mluis	0:62d1edcc13d1	35	#define AIRTIME_BCN_osticks us2osticks(AIRTIME_BCN)
mluis	1:d3b7bde3995c	36	#if defined(CFG_eu868)
mluis	1:d3b7bde3995c	37	#define DNW2_SAFETY_ZONE ms2osticks(3000)
mluis	1:d3b7bde3995c	38	#endif
mluis	1:d3b7bde3995c	39	#if defined(CFG_us915)
mluis	1:d3b7bde3995c	40	#define DNW2_SAFETY_ZONE ms2osticks(750)
mluis	1:d3b7bde3995c	41	#endif
mluis	1:d3b7bde3995c	42
mluis	1:d3b7bde3995c	43	// Special APIs - for development or testing
mluis	1:d3b7bde3995c	44	#define isTESTMODE() 0
mluis	0:62d1edcc13d1	45
mluis	0:62d1edcc13d1	46	DEFINE_LMIC;
mluis	0:62d1edcc13d1	47	DECL_ON_LMIC_EVENT;
mluis	0:62d1edcc13d1	48
mluis	0:62d1edcc13d1	49
mluis	0:62d1edcc13d1	50	// Fwd decls.
mluis	0:62d1edcc13d1	51	static void engineUpdate(void);
mluis	0:62d1edcc13d1	52	static void startScan (void);
mluis	0:62d1edcc13d1	53
mluis	0:62d1edcc13d1	54
mluis	0:62d1edcc13d1	55	// ================================================================================
mluis	0:62d1edcc13d1	56	// BEG OS - default implementations for certain OS suport functions
mluis	0:62d1edcc13d1	57
mluis	1:d3b7bde3995c	58	#if !defined(HAS_os_calls)
mluis	0:62d1edcc13d1	59
mluis	1:d3b7bde3995c	60	#if !defined(os_rlsbf2)
mluis	0:62d1edcc13d1	61	u2_t os_rlsbf2 (xref2cu1_t buf) {
mluis	0:62d1edcc13d1	62	return (u2_t)(buf[0] \| (buf[1]<<8));
mluis	0:62d1edcc13d1	63	}
mluis	0:62d1edcc13d1	64	#endif
mluis	0:62d1edcc13d1	65
mluis	1:d3b7bde3995c	66	#if !defined(os_rlsbf4)
mluis	0:62d1edcc13d1	67	u4_t os_rlsbf4 (xref2cu1_t buf) {
mluis	0:62d1edcc13d1	68	return (u4_t)(buf[0] \| (buf[1]<<8) \| ((u4_t)buf[2]<<16) \| ((u4_t)buf[3]<<24));
mluis	0:62d1edcc13d1	69	}
mluis	0:62d1edcc13d1	70	#endif
mluis	0:62d1edcc13d1	71
mluis	0:62d1edcc13d1	72
mluis	1:d3b7bde3995c	73	#if !defined(os_rmsbf4)
mluis	0:62d1edcc13d1	74	u4_t os_rmsbf4 (xref2cu1_t buf) {
mluis	0:62d1edcc13d1	75	return (u4_t)(buf[3] \| (buf[2]<<8) \| ((u4_t)buf[1]<<16) \| ((u4_t)buf[0]<<24));
mluis	0:62d1edcc13d1	76	}
mluis	0:62d1edcc13d1	77	#endif
mluis	0:62d1edcc13d1	78
mluis	0:62d1edcc13d1	79
mluis	1:d3b7bde3995c	80	#if !defined(os_wlsbf2)
mluis	0:62d1edcc13d1	81	void os_wlsbf2 (xref2u1_t buf, u2_t v) {
mluis	0:62d1edcc13d1	82	buf[0] = v;
mluis	0:62d1edcc13d1	83	buf[1] = v>>8;
mluis	0:62d1edcc13d1	84	}
mluis	0:62d1edcc13d1	85	#endif
mluis	0:62d1edcc13d1	86
mluis	1:d3b7bde3995c	87	#if !defined(os_wlsbf4)
mluis	0:62d1edcc13d1	88	void os_wlsbf4 (xref2u1_t buf, u4_t v) {
mluis	0:62d1edcc13d1	89	buf[0] = v;
mluis	0:62d1edcc13d1	90	buf[1] = v>>8;
mluis	0:62d1edcc13d1	91	buf[2] = v>>16;
mluis	0:62d1edcc13d1	92	buf[3] = v>>24;
mluis	0:62d1edcc13d1	93	}
mluis	0:62d1edcc13d1	94	#endif
mluis	0:62d1edcc13d1	95
mluis	1:d3b7bde3995c	96	#if !defined(os_wmsbf4)
mluis	0:62d1edcc13d1	97	void os_wmsbf4 (xref2u1_t buf, u4_t v) {
mluis	0:62d1edcc13d1	98	buf[3] = v;
mluis	0:62d1edcc13d1	99	buf[2] = v>>8;
mluis	0:62d1edcc13d1	100	buf[1] = v>>16;
mluis	0:62d1edcc13d1	101	buf[0] = v>>24;
mluis	0:62d1edcc13d1	102	}
mluis	0:62d1edcc13d1	103	#endif
mluis	0:62d1edcc13d1	104
mluis	1:d3b7bde3995c	105	#if !defined(os_getBattLevel)
mluis	0:62d1edcc13d1	106	u1_t os_getBattLevel (void) {
mluis	0:62d1edcc13d1	107	return MCMD_DEVS_BATT_NOINFO;
mluis	0:62d1edcc13d1	108	}
mluis	0:62d1edcc13d1	109	#endif
mluis	0:62d1edcc13d1	110
mluis	1:d3b7bde3995c	111	#if !defined(os_crc16)
mluis	1:d3b7bde3995c	112	// New CRC-16 CCITT(XMODEM) checksum for beacons:
mluis	0:62d1edcc13d1	113	u2_t os_crc16 (xref2u1_t data, uint len) {
mluis	1:d3b7bde3995c	114	u2_t remainder = 0;
mluis	1:d3b7bde3995c	115	u2_t polynomial = 0x1021;
mluis	1:d3b7bde3995c	116	for( uint i = 0; i < len; i++ ) {
mluis	1:d3b7bde3995c	117	remainder ^= data[i] << 8;
mluis	1:d3b7bde3995c	118	for( u1_t bit = 8; bit > 0; bit--) {
mluis	1:d3b7bde3995c	119	if( (remainder & 0x8000) )
mluis	1:d3b7bde3995c	120	remainder = (remainder << 1) ^ polynomial;
mluis	1:d3b7bde3995c	121	else
mluis	1:d3b7bde3995c	122	remainder <<= 1;
mluis	1:d3b7bde3995c	123	}
mluis	0:62d1edcc13d1	124	}
mluis	1:d3b7bde3995c	125	return remainder;
mluis	0:62d1edcc13d1	126	}
mluis	0:62d1edcc13d1	127	#endif
mluis	0:62d1edcc13d1	128
mluis	0:62d1edcc13d1	129	#endif // !HAS_os_calls
mluis	0:62d1edcc13d1	130
mluis	0:62d1edcc13d1	131	// END OS - default implementations for certain OS suport functions
mluis	0:62d1edcc13d1	132	// ================================================================================
mluis	0:62d1edcc13d1	133
mluis	0:62d1edcc13d1	134	// ================================================================================
mluis	0:62d1edcc13d1	135	// BEG AES
mluis	0:62d1edcc13d1	136
tmulrooney	5:464c1f2d6cbb	137	static void micB0 (u4_t devaddr, u4_t seqno, int dndir, int len)
tmulrooney	5:464c1f2d6cbb	138	{
tmulrooney	5:464c1f2d6cbb	139	debug("micB0 enter\r\n");
mluis	0:62d1edcc13d1	140	os_clearMem(AESaux,16);
mluis	0:62d1edcc13d1	141	AESaux[0] = 0x49;
mluis	0:62d1edcc13d1	142	AESaux[5] = dndir?1:0;
mluis	0:62d1edcc13d1	143	AESaux[15] = len;
mluis	0:62d1edcc13d1	144	os_wlsbf4(AESaux+ 6,devaddr);
mluis	0:62d1edcc13d1	145	os_wlsbf4(AESaux+10,seqno);
mluis	0:62d1edcc13d1	146	}
mluis	0:62d1edcc13d1	147
mluis	0:62d1edcc13d1	148
tmulrooney	5:464c1f2d6cbb	149	static int aes_verifyMic (xref2cu1_t key, u4_t devaddr, u4_t seqno, int dndir, xref2u1_t pdu, int len)
tmulrooney	5:464c1f2d6cbb	150	{
tmulrooney	5:464c1f2d6cbb	151	debug("aes_verifyMic enter\r\n");
mluis	0:62d1edcc13d1	152	micB0(devaddr, seqno, dndir, len);
mluis	0:62d1edcc13d1	153	os_copyMem(AESkey,key,16);
mluis	0:62d1edcc13d1	154	return os_aes(AES_MIC, pdu, len) == os_rmsbf4(pdu+len);
mluis	0:62d1edcc13d1	155	}
mluis	0:62d1edcc13d1	156
mluis	0:62d1edcc13d1	157
tmulrooney	5:464c1f2d6cbb	158	static void aes_appendMic (xref2cu1_t key, u4_t devaddr, u4_t seqno, int dndir, xref2u1_t pdu, int len)
tmulrooney	5:464c1f2d6cbb	159	{
tmulrooney	5:464c1f2d6cbb	160	debug("aes_appendMic enter\r\n");
mluis	0:62d1edcc13d1	161	micB0(devaddr, seqno, dndir, len);
mluis	0:62d1edcc13d1	162	os_copyMem(AESkey,key,16);
mluis	0:62d1edcc13d1	163	// MSB because of internal structure of AES
mluis	0:62d1edcc13d1	164	os_wmsbf4(pdu+len, os_aes(AES_MIC, pdu, len));
mluis	0:62d1edcc13d1	165	}
mluis	0:62d1edcc13d1	166
mluis	0:62d1edcc13d1	167
tmulrooney	5:464c1f2d6cbb	168	static void aes_appendMic0 (xref2u1_t pdu, int len)
tmulrooney	5:464c1f2d6cbb	169	{
tmulrooney	5:464c1f2d6cbb	170	debug("aes_appendMic0 enter\r\n");
tmulrooney	5:464c1f2d6cbb	171	os_getDevKey(AESkey);
mluis	0:62d1edcc13d1	172	os_wmsbf4(pdu+len, os_aes(AES_MIC\|AES_MICNOAUX, pdu, len)); // MSB because of internal structure of AES
mluis	0:62d1edcc13d1	173	}
mluis	0:62d1edcc13d1	174
mluis	0:62d1edcc13d1	175
tmulrooney	5:464c1f2d6cbb	176	static int aes_verifyMic0 (xref2u1_t pdu, int len)
tmulrooney	5:464c1f2d6cbb	177	{
tmulrooney	5:464c1f2d6cbb	178	debug("aes_verifyMic0 enter\r\n");
mluis	0:62d1edcc13d1	179	os_getDevKey(AESkey);
mluis	0:62d1edcc13d1	180	return os_aes(AES_MIC\|AES_MICNOAUX, pdu, len) == os_rmsbf4(pdu+len);
mluis	0:62d1edcc13d1	181	}
mluis	0:62d1edcc13d1	182
mluis	0:62d1edcc13d1	183
tmulrooney	5:464c1f2d6cbb	184	static void aes_encrypt (xref2u1_t pdu, int len)
tmulrooney	5:464c1f2d6cbb	185	{
tmulrooney	5:464c1f2d6cbb	186	debug("aes_encrypt enter\r\n");
mluis	0:62d1edcc13d1	187	os_getDevKey(AESkey);
mluis	0:62d1edcc13d1	188	os_aes(AES_ENC, pdu, len);
mluis	0:62d1edcc13d1	189	}
mluis	0:62d1edcc13d1	190
mluis	0:62d1edcc13d1	191
tmulrooney	5:464c1f2d6cbb	192	static void aes_cipher (xref2cu1_t key, u4_t devaddr, u4_t seqno, int dndir, xref2u1_t payload, int len)
tmulrooney	5:464c1f2d6cbb	193	{
tmulrooney	5:464c1f2d6cbb	194	debug("aes_cipher enter\r\n");
tmulrooney	5:464c1f2d6cbb	195	if( len <= 0 )
mluis	1:d3b7bde3995c	196	return;
mluis	0:62d1edcc13d1	197	os_clearMem(AESaux, 16);
mluis	0:62d1edcc13d1	198	AESaux[0] = AESaux[15] = 1; // mode=cipher / dir=down / block counter=1
mluis	0:62d1edcc13d1	199	AESaux[5] = dndir?1:0;
mluis	0:62d1edcc13d1	200	os_wlsbf4(AESaux+ 6,devaddr);
mluis	0:62d1edcc13d1	201	os_wlsbf4(AESaux+10,seqno);
mluis	0:62d1edcc13d1	202	os_copyMem(AESkey,key,16);
mluis	0:62d1edcc13d1	203	os_aes(AES_CTR, payload, len);
mluis	0:62d1edcc13d1	204	}
mluis	0:62d1edcc13d1	205
mluis	0:62d1edcc13d1	206
tmulrooney	5:464c1f2d6cbb	207	static void aes_sessKeys (u2_t devnonce, xref2cu1_t artnonce, xref2u1_t nwkkey, xref2u1_t artkey)
tmulrooney	5:464c1f2d6cbb	208	{
tmulrooney	5:464c1f2d6cbb	209	debug("aes_sessKeys enter\r\n");
mluis	0:62d1edcc13d1	210	os_clearMem(nwkkey, 16);
mluis	0:62d1edcc13d1	211	nwkkey[0] = 0x01;
mluis	0:62d1edcc13d1	212	os_copyMem(nwkkey+1, artnonce, LEN_ARTNONCE+LEN_NETID);
mluis	0:62d1edcc13d1	213	os_wlsbf2(nwkkey+1+LEN_ARTNONCE+LEN_NETID, devnonce);
mluis	0:62d1edcc13d1	214	os_copyMem(artkey, nwkkey, 16);
mluis	0:62d1edcc13d1	215	artkey[0] = 0x02;
mluis	0:62d1edcc13d1	216
mluis	0:62d1edcc13d1	217	os_getDevKey(AESkey);
mluis	0:62d1edcc13d1	218	os_aes(AES_ENC, nwkkey, 16);
mluis	0:62d1edcc13d1	219	os_getDevKey(AESkey);
mluis	0:62d1edcc13d1	220	os_aes(AES_ENC, artkey, 16);
mluis	0:62d1edcc13d1	221	}
mluis	0:62d1edcc13d1	222
mluis	0:62d1edcc13d1	223	// END AES
mluis	0:62d1edcc13d1	224	// ================================================================================
mluis	0:62d1edcc13d1	225
mluis	0:62d1edcc13d1	226
mluis	0:62d1edcc13d1	227	// ================================================================================
mluis	0:62d1edcc13d1	228	// BEG LORA
mluis	0:62d1edcc13d1	229
mluis	1:d3b7bde3995c	230	#if defined(CFG_eu868) // ========================================
mluis	0:62d1edcc13d1	231
mluis	0:62d1edcc13d1	232	#define maxFrameLen(dr) ((dr)<=DR_SF9 ? maxFrameLens[(dr)] : 0xFF)
mluis	0:62d1edcc13d1	233	const u1_t maxFrameLens [] = { 64,64,64,123 };
mluis	0:62d1edcc13d1	234
mluis	0:62d1edcc13d1	235	const u1_t _DR2RPS_CRC[] = {
mluis	0:62d1edcc13d1	236	ILLEGAL_RPS,
mluis	0:62d1edcc13d1	237	(u1_t)MAKERPS(SF12, BW125, CR_4_5, 0, 0),
mluis	0:62d1edcc13d1	238	(u1_t)MAKERPS(SF11, BW125, CR_4_5, 0, 0),
mluis	0:62d1edcc13d1	239	(u1_t)MAKERPS(SF10, BW125, CR_4_5, 0, 0),
mluis	0:62d1edcc13d1	240	(u1_t)MAKERPS(SF9, BW125, CR_4_5, 0, 0),
mluis	0:62d1edcc13d1	241	(u1_t)MAKERPS(SF8, BW125, CR_4_5, 0, 0),
mluis	0:62d1edcc13d1	242	(u1_t)MAKERPS(SF7, BW125, CR_4_5, 0, 0),
mluis	0:62d1edcc13d1	243	(u1_t)MAKERPS(SF7, BW250, CR_4_5, 0, 0),
mluis	0:62d1edcc13d1	244	(u1_t)MAKERPS(FSK, BW125, CR_4_5, 0, 0),
mluis	0:62d1edcc13d1	245	ILLEGAL_RPS
mluis	0:62d1edcc13d1	246	};
mluis	0:62d1edcc13d1	247
mluis	0:62d1edcc13d1	248	static const s1_t TXPOWLEVELS[] = {
mluis	0:62d1edcc13d1	249	20, 14, 11, 8, 5, 2, 0,0, 0,0,0,0, 0,0,0,0
mluis	0:62d1edcc13d1	250	};
mluis	0:62d1edcc13d1	251	#define pow2dBm(mcmd_ladr_p1) (TXPOWLEVELS[(mcmd_ladr_p1&MCMD_LADR_POW_MASK)>>MCMD_LADR_POW_SHIFT])
mluis	0:62d1edcc13d1	252
mluis	1:d3b7bde3995c	253	#elif defined(CFG_us915) // ========================================
mluis	0:62d1edcc13d1	254
mluis	0:62d1edcc13d1	255	#define maxFrameLen(dr) ((dr)<=DR_SF11CR ? maxFrameLens[(dr)] : 0xFF)
dudmuck	2:974cafbfb159	256	//const u1_t maxFrameLens [] = { 24,66,142,255,255,255,255,255, 66,142 };
mluis	0:62d1edcc13d1	257
mluis	0:62d1edcc13d1	258	const u1_t _DR2RPS_CRC[] = {
mluis	0:62d1edcc13d1	259	ILLEGAL_RPS,
mluis	0:62d1edcc13d1	260	MAKERPS(SF10, BW125, CR_4_5, 0, 0),
mluis	0:62d1edcc13d1	261	MAKERPS(SF9 , BW125, CR_4_5, 0, 0),
mluis	0:62d1edcc13d1	262	MAKERPS(SF8 , BW125, CR_4_5, 0, 0),
mluis	0:62d1edcc13d1	263	MAKERPS(SF7 , BW125, CR_4_5, 0, 0),
mluis	0:62d1edcc13d1	264	MAKERPS(SF8 , BW500, CR_4_5, 0, 0),
mluis	0:62d1edcc13d1	265	ILLEGAL_RPS ,
mluis	0:62d1edcc13d1	266	ILLEGAL_RPS ,
mluis	0:62d1edcc13d1	267	ILLEGAL_RPS ,
mluis	0:62d1edcc13d1	268	MAKERPS(SF12, BW500, CR_4_5, 0, 0),
mluis	0:62d1edcc13d1	269	MAKERPS(SF11, BW500, CR_4_5, 0, 0),
mluis	0:62d1edcc13d1	270	MAKERPS(SF10, BW500, CR_4_5, 0, 0),
mluis	0:62d1edcc13d1	271	MAKERPS(SF9 , BW500, CR_4_5, 0, 0),
mluis	0:62d1edcc13d1	272	MAKERPS(SF8 , BW500, CR_4_5, 0, 0),
mluis	0:62d1edcc13d1	273	MAKERPS(SF7 , BW500, CR_4_5, 0, 0),
mluis	0:62d1edcc13d1	274	ILLEGAL_RPS
mluis	0:62d1edcc13d1	275	};
mluis	0:62d1edcc13d1	276
mluis	0:62d1edcc13d1	277	#define pow2dBm(mcmd_ladr_p1) ((s1_t)(30 - (((mcmd_ladr_p1)&MCMD_LADR_POW_MASK)<<1)))
mluis	0:62d1edcc13d1	278
mluis	0:62d1edcc13d1	279	#endif // ================================================
mluis	0:62d1edcc13d1	280
mluis	0:62d1edcc13d1	281	static const u1_t SENSITIVITY[7][3] = {
mluis	0:62d1edcc13d1	282	// ------------bw----------
mluis	0:62d1edcc13d1	283	// 125kHz 250kHz 500kHz
mluis	0:62d1edcc13d1	284	{ 141-109, 141-109, 141-109 }, // FSK
mluis	0:62d1edcc13d1	285	{ 141-127, 141-124, 141-121 }, // SF7
mluis	0:62d1edcc13d1	286	{ 141-129, 141-126, 141-123 }, // SF8
mluis	0:62d1edcc13d1	287	{ 141-132, 141-129, 141-126 }, // SF9
mluis	0:62d1edcc13d1	288	{ 141-135, 141-132, 141-129 }, // SF10
mluis	0:62d1edcc13d1	289	{ 141-138, 141-135, 141-132 }, // SF11
mluis	0:62d1edcc13d1	290	{ 141-141, 141-138, 141-135 } // SF12
mluis	0:62d1edcc13d1	291	};
mluis	0:62d1edcc13d1	292
tmulrooney	5:464c1f2d6cbb	293	int getSensitivity (rps_t rps)
tmulrooney	5:464c1f2d6cbb	294	{
tmulrooney	5:464c1f2d6cbb	295	debug("getSensitivity enter\r\n");
mluis	0:62d1edcc13d1	296	return -141 + SENSITIVITY[getSf(rps)][getBw(rps)];
mluis	0:62d1edcc13d1	297	}
mluis	0:62d1edcc13d1	298
tmulrooney	5:464c1f2d6cbb	299	ostime_t calcAirTime (rps_t rps, u1_t plen)
tmulrooney	5:464c1f2d6cbb	300	{
tmulrooney	5:464c1f2d6cbb	301	debug("calcAirTime enter\r\n");
tmulrooney	5:464c1f2d6cbb	302	u1_t bw = getBw(rps); // 0,1,2 = 125,250,500kHz
mluis	0:62d1edcc13d1	303	u1_t sf = getSf(rps); // 0=FSK, 1..6 = SF7..12
mluis	0:62d1edcc13d1	304	if( sf == FSK ) {
mluis	1:d3b7bde3995c	305	return (plen+/preamble/5+/syncword/3+/len/1+/crc/2) * /bits/byte/8
mluis	1:d3b7bde3995c	306	* (s4_t)OSTICKS_PER_SEC / /kbit/s/50000;
mluis	0:62d1edcc13d1	307	}
mluis	0:62d1edcc13d1	308	u1_t sfx = 4*(sf+(7-SF7));
mluis	0:62d1edcc13d1	309	u1_t q = sfx - (sf >= SF11 ? 8 : 0);
mluis	0:62d1edcc13d1	310	int tmp = 8*plen - sfx + 28 + (getNocrc(rps)?0:16) - (getIh(rps)?20:0);
mluis	0:62d1edcc13d1	311	if( tmp > 0 ) {
mluis	1:d3b7bde3995c	312	tmp = (tmp + q - 1) / q;
mluis	1:d3b7bde3995c	313	tmp *= getCr(rps)+5;
mluis	1:d3b7bde3995c	314	tmp += 8;
mluis	0:62d1edcc13d1	315	} else {
mluis	1:d3b7bde3995c	316	tmp = 8;
mluis	0:62d1edcc13d1	317	}
mluis	0:62d1edcc13d1	318	tmp = (tmp<<2) + /preamble/49 /* 4 * (8 + 4.25) */;
mluis	0:62d1edcc13d1	319	// bw = 125000 = 15625 * 2^3
mluis	0:62d1edcc13d1	320	// 250000 = 15625 * 2^4
mluis	0:62d1edcc13d1	321	// 500000 = 15625 * 2^5
mluis	0:62d1edcc13d1	322	// sf = 7..12
mluis	0:62d1edcc13d1	323	//
mluis	0:62d1edcc13d1	324	// osticks = tmp * OSTICKS_PER_SEC * 1<<sf / bw
mluis	0:62d1edcc13d1	325	//
mluis	0:62d1edcc13d1	326	// 3 => counter reduced divisor 125000/8 => 15625
mluis	0:62d1edcc13d1	327	// 2 => counter 2 shift on tmp
mluis	0:62d1edcc13d1	328	sfx = sf+(7-SF7) - (3+2) - bw;
mluis	0:62d1edcc13d1	329	int div = 15625;
mluis	0:62d1edcc13d1	330	if( sfx > 4 ) {
mluis	1:d3b7bde3995c	331	// prevent 32bit signed int overflow in last step
mluis	1:d3b7bde3995c	332	div >>= sfx-4;
mluis	1:d3b7bde3995c	333	sfx = 4;
mluis	0:62d1edcc13d1	334	}
mluis	0:62d1edcc13d1	335	// Need 32bit arithmetic for this last step
mluis	0:62d1edcc13d1	336	return (((ostime_t)tmp << sfx) * OSTICKS_PER_SEC + div/2) / div;
mluis	0:62d1edcc13d1	337	}
mluis	0:62d1edcc13d1	338
dudmuck	2:974cafbfb159	339	/*extern inline s1_t rssi2s1 (int v);
mluis	0:62d1edcc13d1	340	extern inline int s12rssi (s1_t v);
mluis	0:62d1edcc13d1	341	extern inline float s12snr (s1_t v);
dudmuck	2:974cafbfb159	342	extern inline s1_t snr2s1 (double v);*/
mluis	0:62d1edcc13d1	343
mluis	0:62d1edcc13d1	344	extern inline rps_t updr2rps (dr_t dr);
mluis	0:62d1edcc13d1	345	extern inline rps_t dndr2rps (dr_t dr);
mluis	0:62d1edcc13d1	346	extern inline int isFasterDR (dr_t dr1, dr_t dr2);
mluis	0:62d1edcc13d1	347	extern inline int isSlowerDR (dr_t dr1, dr_t dr2);
mluis	0:62d1edcc13d1	348	extern inline dr_t incDR (dr_t dr);
mluis	0:62d1edcc13d1	349	extern inline dr_t decDR (dr_t dr);
mluis	0:62d1edcc13d1	350	extern inline dr_t assertDR (dr_t dr);
mluis	0:62d1edcc13d1	351	extern inline dr_t validDR (dr_t dr);
mluis	0:62d1edcc13d1	352	extern inline dr_t lowerDR (dr_t dr, u1_t n);
mluis	0:62d1edcc13d1	353
mluis	0:62d1edcc13d1	354	extern inline sf_t getSf (rps_t params);
mluis	0:62d1edcc13d1	355	extern inline rps_t setSf (rps_t params, sf_t sf);
mluis	0:62d1edcc13d1	356	extern inline bw_t getBw (rps_t params);
mluis	0:62d1edcc13d1	357	extern inline rps_t setBw (rps_t params, bw_t cr);
mluis	0:62d1edcc13d1	358	extern inline cr_t getCr (rps_t params);
mluis	0:62d1edcc13d1	359	extern inline rps_t setCr (rps_t params, cr_t cr);
mluis	0:62d1edcc13d1	360	extern inline int getNocrc (rps_t params);
mluis	0:62d1edcc13d1	361	extern inline rps_t setNocrc (rps_t params, int nocrc);
mluis	0:62d1edcc13d1	362	extern inline int getIh (rps_t params);
mluis	0:62d1edcc13d1	363	extern inline rps_t setIh (rps_t params, int ih);
mluis	0:62d1edcc13d1	364	extern inline rps_t makeRps (sf_t sf, bw_t bw, cr_t cr, int ih, int nocrc);
mluis	0:62d1edcc13d1	365	extern inline int sameSfBw (rps_t r1, rps_t r2);
mluis	0:62d1edcc13d1	366
mluis	0:62d1edcc13d1	367	// END LORA
mluis	0:62d1edcc13d1	368	// ================================================================================
mluis	0:62d1edcc13d1	369
mluis	0:62d1edcc13d1	370
mluis	0:62d1edcc13d1	371	// Adjust DR for TX retries
mluis	0:62d1edcc13d1	372	// - indexed by retry count
mluis	0:62d1edcc13d1	373	// - return steps to lower DR
mluis	0:62d1edcc13d1	374	static const u1_t DRADJUST[2+TXCONF_ATTEMPTS] = {
mluis	0:62d1edcc13d1	375	// normal frames - 1st try / no retry
mluis	0:62d1edcc13d1	376	0,
mluis	0:62d1edcc13d1	377	// confirmed frames
mluis	1:d3b7bde3995c	378	0,0,1,0,1,0,1,0,0
mluis	0:62d1edcc13d1	379	};
mluis	0:62d1edcc13d1	380
mluis	0:62d1edcc13d1	381
mluis	0:62d1edcc13d1	382	// Table below defines the size of one symbol as
mluis	0:62d1edcc13d1	383	// symtime = 256us * 2^T(sf,bw)
mluis	0:62d1edcc13d1	384	// 256us is called one symunit.
mluis	1:d3b7bde3995c	385	// SF:
mluis	1:d3b7bde3995c	386	// BW: \|__7___8___9__10__11__12
mluis	1:d3b7bde3995c	387	// 125kHz \| 2 3 4 5 6 7
mluis	1:d3b7bde3995c	388	// 250kHz \| 1 2 3 4 5 6
mluis	1:d3b7bde3995c	389	// 500kHz \| 0 1 2 3 4 5
mluis	0:62d1edcc13d1	390	//
mluis	0:62d1edcc13d1	391	// Times for half symbol per DR
mluis	0:62d1edcc13d1	392	// Per DR table to minimize rounding errors
mluis	0:62d1edcc13d1	393	static const ostime_t DR2HSYM_osticks[] = {
mluis	1:d3b7bde3995c	394	#if defined(CFG_eu868)
mluis	0:62d1edcc13d1	395	#define dr2hsym(dr) (DR2HSYM_osticks[(dr)])
mluis	0:62d1edcc13d1	396	us2osticksRound(128<<7), // DR_SF12
mluis	0:62d1edcc13d1	397	us2osticksRound(128<<6), // DR_SF11
mluis	0:62d1edcc13d1	398	us2osticksRound(128<<5), // DR_SF10
mluis	0:62d1edcc13d1	399	us2osticksRound(128<<4), // DR_SF9
mluis	0:62d1edcc13d1	400	us2osticksRound(128<<3), // DR_SF8
mluis	0:62d1edcc13d1	401	us2osticksRound(128<<2), // DR_SF7
mluis	0:62d1edcc13d1	402	us2osticksRound(128<<1), // DR_SF7B
mluis	0:62d1edcc13d1	403	us2osticksRound(80) // FSK -- not used (time for 1/2 byte)
mluis	1:d3b7bde3995c	404	#elif defined(CFG_us915)
mluis	0:62d1edcc13d1	405	#define dr2hsym(dr) (DR2HSYM_osticks[(dr)&7]) // map DR_SFnCR -> 0-6
mluis	0:62d1edcc13d1	406	us2osticksRound(128<<5), // DR_SF10 DR_SF12CR
mluis	0:62d1edcc13d1	407	us2osticksRound(128<<4), // DR_SF9 DR_SF11CR
mluis	0:62d1edcc13d1	408	us2osticksRound(128<<3), // DR_SF8 DR_SF10CR
mluis	0:62d1edcc13d1	409	us2osticksRound(128<<2), // DR_SF7 DR_SF9CR
mluis	0:62d1edcc13d1	410	us2osticksRound(128<<1), // DR_SF8C DR_SF8CR
mluis	0:62d1edcc13d1	411	us2osticksRound(128<<0) // ------ DR_SF7CR
mluis	0:62d1edcc13d1	412	#endif
mluis	0:62d1edcc13d1	413	};
mluis	0:62d1edcc13d1	414
mluis	0:62d1edcc13d1	415
tmulrooney	5:464c1f2d6cbb	416	static ostime_t calcRxWindow (u1_t secs, dr_t dr)
tmulrooney	5:464c1f2d6cbb	417	{
tmulrooney	5:464c1f2d6cbb	418	debug("calcRxWindow enter\r\n");
mluis	0:62d1edcc13d1	419	ostime_t rxoff, err;
mluis	0:62d1edcc13d1	420	if( secs==0 ) {
mluis	1:d3b7bde3995c	421	// aka 128 secs (next becaon)
mluis	1:d3b7bde3995c	422	rxoff = LMIC.drift;
mluis	1:d3b7bde3995c	423	err = LMIC.lastDriftDiff;
mluis	0:62d1edcc13d1	424	} else {
mluis	1:d3b7bde3995c	425	// scheduled RX window within secs into current beacon period
mluis	1:d3b7bde3995c	426	rxoff = (LMIC.drift * (ostime_t)secs) >> BCN_INTV_exp;
mluis	1:d3b7bde3995c	427	err = (LMIC.lastDriftDiff * (ostime_t)secs) >> BCN_INTV_exp;
mluis	0:62d1edcc13d1	428	}
mluis	0:62d1edcc13d1	429	u1_t rxsyms = MINRX_SYMS;
mluis	0:62d1edcc13d1	430	err += (ostime_t)LMIC.maxDriftDiff * LMIC.missedBcns;
mluis	0:62d1edcc13d1	431	LMIC.rxsyms = MINRX_SYMS + (err / dr2hsym(dr));
mluis	0:62d1edcc13d1	432
mluis	0:62d1edcc13d1	433	return (rxsyms-PAMBL_SYMS) * dr2hsym(dr) + rxoff;
mluis	0:62d1edcc13d1	434	}
mluis	0:62d1edcc13d1	435
mluis	0:62d1edcc13d1	436
mluis	0:62d1edcc13d1	437	// Setup beacon RX parameters assuming we have an error of ms (aka +/-(ms/2))
tmulrooney	5:464c1f2d6cbb	438	static void calcBcnRxWindowFromMillis (u1_t ms, bit_t ini)
tmulrooney	5:464c1f2d6cbb	439	{
tmulrooney	5:464c1f2d6cbb	440	debug("calcBcnRxWindowFromMillis enter\r\n");
mluis	0:62d1edcc13d1	441	if( ini ) {
mluis	1:d3b7bde3995c	442	LMIC.drift = 0;
mluis	1:d3b7bde3995c	443	LMIC.maxDriftDiff = 0;
mluis	1:d3b7bde3995c	444	LMIC.missedBcns = 0;
mluis	1:d3b7bde3995c	445	LMIC.bcninfo.flags \|= BCN_NODRIFT\|BCN_NODDIFF;
mluis	0:62d1edcc13d1	446	}
mluis	0:62d1edcc13d1	447	ostime_t hsym = dr2hsym(DR_BCN);
mluis	0:62d1edcc13d1	448	LMIC.bcnRxsyms = MINRX_SYMS + ms2osticksCeil(ms) / hsym;
mluis	0:62d1edcc13d1	449	LMIC.bcnRxtime = LMIC.bcninfo.txtime + BCN_INTV_osticks - (LMIC.bcnRxsyms-PAMBL_SYMS) * hsym;
mluis	0:62d1edcc13d1	450	}
mluis	0:62d1edcc13d1	451
mluis	0:62d1edcc13d1	452
mluis	0:62d1edcc13d1	453	// Setup scheduled RX window (ping/multicast slot)
tmulrooney	5:464c1f2d6cbb	454	static void rxschedInit (xref2rxsched_t rxsched)
tmulrooney	5:464c1f2d6cbb	455	{
tmulrooney	5:464c1f2d6cbb	456	debug("rxschedInit enter\r\n");
mluis	0:62d1edcc13d1	457	os_clearMem(AESkey,16);
mluis	0:62d1edcc13d1	458	os_clearMem(LMIC.frame+8,8);
mluis	0:62d1edcc13d1	459	os_wlsbf4(LMIC.frame, LMIC.bcninfo.time);
mluis	0:62d1edcc13d1	460	os_wlsbf4(LMIC.frame+4, LMIC.devaddr);
mluis	0:62d1edcc13d1	461	os_aes(AES_ENC,LMIC.frame,16);
mluis	0:62d1edcc13d1	462	u1_t intvExp = rxsched->intvExp;
mluis	0:62d1edcc13d1	463	ostime_t off = os_rlsbf2(LMIC.frame) & (0x0FFF >> (7 - intvExp)); // random offset (slot units)
mluis	0:62d1edcc13d1	464	rxsched->rxbase = (LMIC.bcninfo.txtime +
mluis	1:d3b7bde3995c	465	BCN_RESERVE_osticks +
mluis	1:d3b7bde3995c	466	ms2osticks(BCN_SLOT_SPAN_ms * off)); // random offset osticks
mluis	0:62d1edcc13d1	467	rxsched->slot = 0;
mluis	0:62d1edcc13d1	468	rxsched->rxtime = rxsched->rxbase - calcRxWindow(/secs BCN_RESERVE/2+(1<<intvExp),rxsched->dr);
mluis	0:62d1edcc13d1	469	rxsched->rxsyms = LMIC.rxsyms;
mluis	0:62d1edcc13d1	470	}
mluis	0:62d1edcc13d1	471
mluis	0:62d1edcc13d1	472
tmulrooney	5:464c1f2d6cbb	473	static bit_t rxschedNext (xref2rxsched_t rxsched, ostime_t cando)
tmulrooney	5:464c1f2d6cbb	474	{
tmulrooney	5:464c1f2d6cbb	475	debug("rxschedNext enter\r\n");
mluis	0:62d1edcc13d1	476	again:
mluis	0:62d1edcc13d1	477	if( rxsched->rxtime - cando >= 0 )
mluis	1:d3b7bde3995c	478	return 1;
mluis	0:62d1edcc13d1	479	u1_t slot;
mluis	0:62d1edcc13d1	480	if( (slot=rxsched->slot) >= 128 )
mluis	1:d3b7bde3995c	481	return 0;
mluis	0:62d1edcc13d1	482	u1_t intv = 1<<rxsched->intvExp;
mluis	0:62d1edcc13d1	483	if( (rxsched->slot = (slot += (intv))) >= 128 )
mluis	1:d3b7bde3995c	484	return 0;
mluis	0:62d1edcc13d1	485	rxsched->rxtime = rxsched->rxbase
mluis	1:d3b7bde3995c	486	+ ((BCN_WINDOW_osticks * (ostime_t)slot) >> BCN_INTV_exp)
mluis	1:d3b7bde3995c	487	- calcRxWindow(/secs BCN_RESERVE/2+slot+intv,rxsched->dr);
mluis	0:62d1edcc13d1	488	rxsched->rxsyms = LMIC.rxsyms;
mluis	0:62d1edcc13d1	489	goto again;
mluis	0:62d1edcc13d1	490	}
mluis	0:62d1edcc13d1	491
mluis	0:62d1edcc13d1	492
tmulrooney	5:464c1f2d6cbb	493	static ostime_t rndDelay (u1_t secSpan)
tmulrooney	5:464c1f2d6cbb	494	{
tmulrooney	5:464c1f2d6cbb	495	debug("rndDelay enter\r\n");
mluis	0:62d1edcc13d1	496	u2_t r = os_getRndU2();
mluis	0:62d1edcc13d1	497	ostime_t delay = r;
mluis	0:62d1edcc13d1	498	if( delay > OSTICKS_PER_SEC )
mluis	1:d3b7bde3995c	499	delay = r % (u2_t)OSTICKS_PER_SEC;
mluis	0:62d1edcc13d1	500	if( secSpan > 0 )
mluis	1:d3b7bde3995c	501	delay += ((u1_t)r % secSpan) * OSTICKS_PER_SEC;
mluis	0:62d1edcc13d1	502	return delay;
mluis	0:62d1edcc13d1	503	}
mluis	0:62d1edcc13d1	504
mluis	0:62d1edcc13d1	505
tmulrooney	5:464c1f2d6cbb	506	static void txDelay (ostime_t reftime, u1_t secSpan)
tmulrooney	5:464c1f2d6cbb	507	{
tmulrooney	5:464c1f2d6cbb	508	debug("txDelay enter\r\n");
mluis	0:62d1edcc13d1	509	reftime += rndDelay(secSpan);
mluis	0:62d1edcc13d1	510	if( LMIC.globalDutyRate == 0 \|\| (reftime - LMIC.globalDutyAvail) > 0 ) {
mluis	1:d3b7bde3995c	511	LMIC.globalDutyAvail = reftime;
mluis	1:d3b7bde3995c	512	LMIC.opmode \|= OP_RNDTX;
mluis	0:62d1edcc13d1	513	}
mluis	0:62d1edcc13d1	514	}
mluis	0:62d1edcc13d1	515
mluis	0:62d1edcc13d1	516
tmulrooney	5:464c1f2d6cbb	517	static void setDrJoin (u1_t reason, u1_t dr)
tmulrooney	5:464c1f2d6cbb	518	{
tmulrooney	5:464c1f2d6cbb	519	debug("setDrJoin enter\r\n");
mluis	0:62d1edcc13d1	520	EV(drChange, INFO, (e_.reason = reason,
mluis	1:d3b7bde3995c	521	e_.deveui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	522	e_.dr = dr\|DR_PAGE,
mluis	1:d3b7bde3995c	523	e_.txpow = LMIC.adrTxPow,
mluis	1:d3b7bde3995c	524	e_.prevdr = LMIC.datarate\|DR_PAGE,
mluis	1:d3b7bde3995c	525	e_.prevtxpow = LMIC.adrTxPow));
mluis	0:62d1edcc13d1	526	LMIC.datarate = dr;
mluis	1:d3b7bde3995c	527	DO_DEVDB(LMIC.datarate,datarate);
mluis	0:62d1edcc13d1	528	}
mluis	0:62d1edcc13d1	529
mluis	0:62d1edcc13d1	530
tmulrooney	5:464c1f2d6cbb	531	static void setDrTxpow (u1_t reason, u1_t dr, s1_t pow)
tmulrooney	5:464c1f2d6cbb	532	{
tmulrooney	5:464c1f2d6cbb	533	debug("setDrTxpow enter\r\n");
tmulrooney	5:464c1f2d6cbb	534	EV(drChange, INFO, (e_.reason = reason,
mluis	1:d3b7bde3995c	535	e_.deveui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	536	e_.dr = dr\|DR_PAGE,
mluis	1:d3b7bde3995c	537	e_.txpow = pow,
mluis	1:d3b7bde3995c	538	e_.prevdr = LMIC.datarate\|DR_PAGE,
mluis	1:d3b7bde3995c	539	e_.prevtxpow = LMIC.adrTxPow));
mluis	1:d3b7bde3995c	540
dudmuck	2:974cafbfb159	541	if( pow != KEEP_TXPOW ) {
dudmuck	2:974cafbfb159	542	LMIC.adrTxPow = pow;
dudmuck	2:974cafbfb159	543	if (pow < LMIC.txpow_limit)
dudmuck	2:974cafbfb159	544	LMIC.txpow = pow;
dudmuck	2:974cafbfb159	545	}
mluis	1:d3b7bde3995c	546	if( LMIC.datarate != dr ) {
mluis	1:d3b7bde3995c	547	LMIC.datarate = dr;
mluis	1:d3b7bde3995c	548	DO_DEVDB(LMIC.datarate,datarate);
mluis	1:d3b7bde3995c	549	LMIC.opmode \|= OP_NEXTCHNL;
mluis	1:d3b7bde3995c	550	}
mluis	0:62d1edcc13d1	551	}
mluis	0:62d1edcc13d1	552
mluis	0:62d1edcc13d1	553
tmulrooney	5:464c1f2d6cbb	554	void LMIC_stopPingable (void)
tmulrooney	5:464c1f2d6cbb	555	{
tmulrooney	5:464c1f2d6cbb	556	debug("LMIC_stopPingable enter\r\n");
tmulrooney	5:464c1f2d6cbb	557	LMIC.opmode &= ~(OP_PINGABLE\|OP_PINGINI);
mluis	0:62d1edcc13d1	558	}
mluis	0:62d1edcc13d1	559
mluis	0:62d1edcc13d1	560
tmulrooney	5:464c1f2d6cbb	561	void LMIC_setPingable (u1_t intvExp)
tmulrooney	5:464c1f2d6cbb	562	{
tmulrooney	5:464c1f2d6cbb	563	debug("LMIC_setPingable enter\r\n");
mluis	0:62d1edcc13d1	564	// Change setting
mluis	0:62d1edcc13d1	565	LMIC.ping.intvExp = (intvExp & 0x7);
mluis	0:62d1edcc13d1	566	LMIC.opmode \|= OP_PINGABLE;
mluis	0:62d1edcc13d1	567	// App may call LMIC_enableTracking() explicitely before
mluis	0:62d1edcc13d1	568	// Otherwise tracking is implicitly enabled here
mluis	0:62d1edcc13d1	569	if( (LMIC.opmode & (OP_TRACK\|OP_SCAN)) == 0 && LMIC.bcninfoTries == 0 )
mluis	1:d3b7bde3995c	570	LMIC_enableTracking(0);
mluis	0:62d1edcc13d1	571	}
mluis	0:62d1edcc13d1	572
mluis	0:62d1edcc13d1	573
mluis	1:d3b7bde3995c	574	#if defined(CFG_eu868)
mluis	0:62d1edcc13d1	575	// ================================================================================
mluis	0:62d1edcc13d1	576	//
mluis	0:62d1edcc13d1	577	// BEG: EU868 related stuff
mluis	0:62d1edcc13d1	578	//
mluis	1:d3b7bde3995c	579	enum { NUM_DEFAULT_CHANNELS=6 };
mluis	0:62d1edcc13d1	580	static const u4_t iniChannelFreq[12] = {
mluis	0:62d1edcc13d1	581	// Join frequencies and duty cycle limit (0.1%)
mluis	1:d3b7bde3995c	582	EU868_F1\|BAND_MILLI, EU868_J4\|BAND_MILLI,
mluis	1:d3b7bde3995c	583	EU868_F2\|BAND_MILLI, EU868_J5\|BAND_MILLI,
mluis	1:d3b7bde3995c	584	EU868_F3\|BAND_MILLI, EU868_J6\|BAND_MILLI,
mluis	0:62d1edcc13d1	585	// Default operational frequencies
mluis	0:62d1edcc13d1	586	EU868_F1\|BAND_CENTI, EU868_F2\|BAND_CENTI, EU868_F3\|BAND_CENTI,
mluis	0:62d1edcc13d1	587	EU868_F4\|BAND_MILLI, EU868_F5\|BAND_MILLI, EU868_F6\|BAND_DECI
mluis	0:62d1edcc13d1	588	};
mluis	0:62d1edcc13d1	589
mluis	0:62d1edcc13d1	590	static void initDefaultChannels (bit_t join) {
mluis	1:d3b7bde3995c	591	os_clearMem(&LMIC.channelFreq, sizeof(LMIC.channelFreq));
mluis	1:d3b7bde3995c	592	os_clearMem(&LMIC.channelDrMap, sizeof(LMIC.channelDrMap));
mluis	1:d3b7bde3995c	593	os_clearMem(&LMIC.bands, sizeof(LMIC.bands));
mluis	1:d3b7bde3995c	594
dudmuck	2:974cafbfb159	595	LMIC.channelMap = 0x3;
mluis	0:62d1edcc13d1	596	u1_t su = join ? 0 : 6;
mluis	0:62d1edcc13d1	597	for( u1_t fu=0; fu<6; fu++,su++ ) {
mluis	1:d3b7bde3995c	598	LMIC.channelFreq[fu] = iniChannelFreq[su];
mluis	1:d3b7bde3995c	599	LMIC.channelDrMap[fu] = DR_RANGE_MAP(DR_SF12,DR_SF7);
mluis	0:62d1edcc13d1	600	}
mluis	1:d3b7bde3995c	601	if( !join ) {
mluis	1:d3b7bde3995c	602	LMIC.channelDrMap[5] = DR_RANGE_MAP(DR_SF12,DR_SF7);
mluis	1:d3b7bde3995c	603	LMIC.channelDrMap[1] = DR_RANGE_MAP(DR_SF12,DR_FSK);
mluis	1:d3b7bde3995c	604	}
mluis	0:62d1edcc13d1	605
mluis	1:d3b7bde3995c	606	LMIC.bands[BAND_MILLI].txcap = 1000; // 0.1%
mluis	1:d3b7bde3995c	607	LMIC.bands[BAND_MILLI].txpow = 14;
mluis	1:d3b7bde3995c	608	LMIC.bands[BAND_MILLI].lastchnl = os_getRndU1() % MAX_CHANNELS;
mluis	1:d3b7bde3995c	609	LMIC.bands[BAND_CENTI].txcap = 100; // 1%
mluis	1:d3b7bde3995c	610	LMIC.bands[BAND_CENTI].txpow = 14;
mluis	1:d3b7bde3995c	611	LMIC.bands[BAND_CENTI].lastchnl = os_getRndU1() % MAX_CHANNELS;
mluis	1:d3b7bde3995c	612	LMIC.bands[BAND_DECI ].txcap = 10; // 10%
mluis	1:d3b7bde3995c	613	LMIC.bands[BAND_DECI ].txpow = 27;
mluis	1:d3b7bde3995c	614	LMIC.bands[BAND_CENTI].lastchnl = os_getRndU1() % MAX_CHANNELS;
mluis	0:62d1edcc13d1	615	LMIC.bands[BAND_MILLI].avail =
mluis	0:62d1edcc13d1	616	LMIC.bands[BAND_CENTI].avail =
mluis	0:62d1edcc13d1	617	LMIC.bands[BAND_DECI ].avail = os_getTime();
mluis	0:62d1edcc13d1	618	}
mluis	0:62d1edcc13d1	619
mluis	1:d3b7bde3995c	620	bit_t LMIC_setupBand (u1_t bandidx, s1_t txpow, u2_t txcap) {
mluis	1:d3b7bde3995c	621	if( bandidx > BAND_AUX ) return 0;
mluis	1:d3b7bde3995c	622	band_t* b = &LMIC.bands[bandidx];
mluis	1:d3b7bde3995c	623	b->txpow = txpow;
mluis	1:d3b7bde3995c	624	b->txcap = txcap;
mluis	1:d3b7bde3995c	625	b->avail = os_getTime();
mluis	1:d3b7bde3995c	626	b->lastchnl = os_getRndU1() % MAX_CHANNELS;
mluis	1:d3b7bde3995c	627	return 1;
mluis	1:d3b7bde3995c	628	}
mluis	1:d3b7bde3995c	629
mluis	1:d3b7bde3995c	630	bit_t LMIC_setupChannel (u1_t chidx, u4_t freq, u2_t drmap, s1_t band) {
mluis	1:d3b7bde3995c	631	if( chidx >= MAX_CHANNELS )
mluis	1:d3b7bde3995c	632	return 0;
mluis	1:d3b7bde3995c	633	if( band == -1 ) {
mluis	1:d3b7bde3995c	634	if( freq >= 869400000 && freq <= 869650000 )
mluis	1:d3b7bde3995c	635	freq \|= BAND_DECI; // 10% 27dBm
mluis	1:d3b7bde3995c	636	else if( (freq >= 868000000 && freq <= 868600000) \|\|
mluis	1:d3b7bde3995c	637	(freq >= 869700000 && freq <= 870000000) )
mluis	1:d3b7bde3995c	638	freq \|= BAND_CENTI; // 1% 14dBm
mluis	1:d3b7bde3995c	639	else
mluis	1:d3b7bde3995c	640	freq \|= BAND_MILLI; // 0.1% 14dBm
mluis	1:d3b7bde3995c	641	} else {
mluis	1:d3b7bde3995c	642	if( band > BAND_AUX ) return 0;
mluis	1:d3b7bde3995c	643	freq = (freq&~3) \| band;
mluis	1:d3b7bde3995c	644	}
mluis	1:d3b7bde3995c	645	LMIC.channelFreq [chidx] = freq;
mluis	1:d3b7bde3995c	646	LMIC.channelDrMap[chidx] = drmap==0 ? DR_RANGE_MAP(DR_SF12,DR_SF7) : drmap;
mluis	1:d3b7bde3995c	647	LMIC.channelMap \|= 1<<chidx; // enabled right away
mluis	1:d3b7bde3995c	648	return 1;
mluis	1:d3b7bde3995c	649	}
mluis	1:d3b7bde3995c	650
mluis	1:d3b7bde3995c	651	void LMIC_disableChannel (u1_t channel) {
mluis	1:d3b7bde3995c	652	LMIC.channelFreq[channel] = 0;
mluis	1:d3b7bde3995c	653	LMIC.channelDrMap[channel] = 0;
mluis	1:d3b7bde3995c	654	LMIC.channelMap &= ~(1<<channel);
mluis	1:d3b7bde3995c	655	}
mluis	1:d3b7bde3995c	656
mluis	0:62d1edcc13d1	657	static u4_t convFreq (xref2u1_t ptr) {
mluis	0:62d1edcc13d1	658	u4_t freq = (os_rlsbf4(ptr-1) >> 8) * 100;
mluis	1:d3b7bde3995c	659	if( freq < EU868_FREQ_MIN \|\| freq > EU868_FREQ_MAX )
mluis	1:d3b7bde3995c	660	freq = 0;
mluis	0:62d1edcc13d1	661	return freq;
mluis	0:62d1edcc13d1	662	}
mluis	0:62d1edcc13d1	663
mluis	0:62d1edcc13d1	664	static u1_t mapChannels (u1_t chpage, u2_t chmap) {
mluis	1:d3b7bde3995c	665	// Bad page, disable all channel, enable non-existent
mluis	1:d3b7bde3995c	666	if( chpage != 0 \|\| chmap==0 \|\| (chmap & ~LMIC.channelMap) != 0 )
mluis	1:d3b7bde3995c	667	return 0; // illegal input
mluis	0:62d1edcc13d1	668	for( u1_t chnl=0; chnl<MAX_CHANNELS; chnl++ ) {
mluis	1:d3b7bde3995c	669	if( (chmap & (1<<chnl)) != 0 && LMIC.channelFreq[chnl] == 0 )
mluis	1:d3b7bde3995c	670	chmap &= ~(1<<chnl); // ignore - channel is not defined
mluis	0:62d1edcc13d1	671	}
mluis	0:62d1edcc13d1	672	LMIC.channelMap = chmap;
mluis	0:62d1edcc13d1	673	return 1;
mluis	0:62d1edcc13d1	674	}
mluis	0:62d1edcc13d1	675
mluis	0:62d1edcc13d1	676
mluis	0:62d1edcc13d1	677	static void updateTx (ostime_t txbeg) {
mluis	0:62d1edcc13d1	678	u4_t freq = LMIC.channelFreq[LMIC.txChnl];
mluis	0:62d1edcc13d1	679	// Update global/band specific duty cycle stats
mluis	0:62d1edcc13d1	680	ostime_t airtime = calcAirTime(LMIC.rps, LMIC.dataLen);
mluis	0:62d1edcc13d1	681	// Update channel/global duty cycle stats
mluis	0:62d1edcc13d1	682	xref2band_t band = &LMIC.bands[freq & 0x3];
mluis	0:62d1edcc13d1	683	LMIC.freq = freq & ~(u4_t)3;
mluis	0:62d1edcc13d1	684	LMIC.txpow = band->txpow;
mluis	0:62d1edcc13d1	685	band->avail = txbeg + airtime * band->txcap;
mluis	0:62d1edcc13d1	686	if( LMIC.globalDutyRate != 0 )
mluis	1:d3b7bde3995c	687	LMIC.globalDutyAvail = txbeg + (airtime<<LMIC.globalDutyRate);
mluis	0:62d1edcc13d1	688	}
mluis	0:62d1edcc13d1	689
mluis	0:62d1edcc13d1	690	static ostime_t nextTx (ostime_t now) {
mluis	1:d3b7bde3995c	691	u1_t bmap=0xF;
mluis	1:d3b7bde3995c	692	do {
mluis	1:d3b7bde3995c	693	ostime_t mintime = now + /10h/36000*OSTICKS_PER_SEC;
mluis	1:d3b7bde3995c	694	u1_t band=0;
mluis	1:d3b7bde3995c	695	for( u1_t bi=0; bi<4; bi++ ) {
mluis	1:d3b7bde3995c	696	if( (bmap & (1<<bi)) && mintime - LMIC.bands[bi].avail > 0 )
mluis	1:d3b7bde3995c	697	mintime = LMIC.bands[band = bi].avail;
mluis	0:62d1edcc13d1	698	}
mluis	1:d3b7bde3995c	699	// Find next channel in given band
mluis	1:d3b7bde3995c	700	u1_t chnl = LMIC.bands[band].lastchnl;
mluis	1:d3b7bde3995c	701	for( u1_t ci=0; ci<MAX_CHANNELS; ci++ ) {
mluis	1:d3b7bde3995c	702	if( (chnl = (chnl+1)) >= MAX_CHANNELS )
mluis	1:d3b7bde3995c	703	chnl -= MAX_CHANNELS;
mluis	1:d3b7bde3995c	704	if( (LMIC.channelMap & (1<<chnl)) != 0 && // channel enabled
mluis	1:d3b7bde3995c	705	(LMIC.channelDrMap[chnl] & (1<<(LMIC.datarate&0xF))) != 0 &&
mluis	1:d3b7bde3995c	706	band == (LMIC.channelFreq[chnl] & 0x3) ) { // in selected band
mluis	1:d3b7bde3995c	707	LMIC.txChnl = LMIC.bands[band].lastchnl = chnl;
mluis	1:d3b7bde3995c	708	return mintime;
mluis	1:d3b7bde3995c	709	}
mluis	0:62d1edcc13d1	710	}
mluis	1:d3b7bde3995c	711	if( (bmap &= ~(1<<band)) == 0 ) {
mluis	1:d3b7bde3995c	712	// No feasible channel found!
mluis	1:d3b7bde3995c	713	return mintime;
mluis	1:d3b7bde3995c	714	}
mluis	0:62d1edcc13d1	715	} while(1);
mluis	0:62d1edcc13d1	716	}
mluis	0:62d1edcc13d1	717
mluis	1:d3b7bde3995c	718
mluis	0:62d1edcc13d1	719	static void setBcnRxParams (void) {
mluis	0:62d1edcc13d1	720	LMIC.dataLen = 0;
mluis	0:62d1edcc13d1	721	LMIC.freq = LMIC.channelFreq[LMIC.bcnChnl] & ~(u4_t)3;
mluis	0:62d1edcc13d1	722	LMIC.rps = setIh(setNocrc(dndr2rps((dr_t)DR_BCN),1),LEN_BCN);
mluis	0:62d1edcc13d1	723	}
mluis	0:62d1edcc13d1	724
mluis	0:62d1edcc13d1	725	#define setRx1Params() /LMIC.freq/rps remain unchanged/
mluis	0:62d1edcc13d1	726
dudmuck	2:974cafbfb159	727	static void initJoinLoop (void) { // eu868
mluis	1:d3b7bde3995c	728	LMIC.txChnl = os_getRndU1() % 6;
mluis	0:62d1edcc13d1	729	LMIC.adrTxPow = 14;
mluis	0:62d1edcc13d1	730	setDrJoin(DRCHG_SET, DR_SF7);
mluis	0:62d1edcc13d1	731	initDefaultChannels(1);
mluis	0:62d1edcc13d1	732	ASSERT((LMIC.opmode & OP_NEXTCHNL)==0);
mluis	1:d3b7bde3995c	733	LMIC.txend = LMIC.bands[BAND_MILLI].avail + rndDelay(8);
mluis	0:62d1edcc13d1	734	}
mluis	0:62d1edcc13d1	735
mluis	0:62d1edcc13d1	736	static ostime_t nextJoinState (void) {
mluis	1:d3b7bde3995c	737	u1_t failed = 0;
mluis	1:d3b7bde3995c	738
mluis	0:62d1edcc13d1	739	// Try 869.x and then 864.x with same DR
mluis	0:62d1edcc13d1	740	// If both fail try next lower datarate
mluis	1:d3b7bde3995c	741	if( ++LMIC.txChnl == 6 )
mluis	1:d3b7bde3995c	742	LMIC.txChnl = 0;
mluis	1:d3b7bde3995c	743	if( (++LMIC.txCnt & 1) == 0 ) {
mluis	1:d3b7bde3995c	744	// Lower DR every 2nd try (having tried 868.x and 864.x with the same DR)
mluis	1:d3b7bde3995c	745	if( LMIC.datarate == DR_SF12 )
mluis	1:d3b7bde3995c	746	failed = 1; // we have tried all DR - signal EV_JOIN_FAILED
mluis	1:d3b7bde3995c	747	else
mluis	1:d3b7bde3995c	748	setDrJoin(DRCHG_NOJACC, decDR((dr_t)LMIC.datarate));
mluis	1:d3b7bde3995c	749	}
mluis	1:d3b7bde3995c	750	// Clear NEXTCHNL because join state engine controls channel hopping
mluis	0:62d1edcc13d1	751	LMIC.opmode &= ~OP_NEXTCHNL;
mluis	1:d3b7bde3995c	752	// Move txend to randomize synchronized concurrent joins.
mluis	1:d3b7bde3995c	753	// Duty cycle is based on txend.
mluis	1:d3b7bde3995c	754	ostime_t time = os_getTime();
mluis	1:d3b7bde3995c	755	if( time - LMIC.bands[BAND_MILLI].avail < 0 )
mluis	1:d3b7bde3995c	756	time = LMIC.bands[BAND_MILLI].avail;
mluis	1:d3b7bde3995c	757	LMIC.txend = time +
mluis	1:d3b7bde3995c	758	(isTESTMODE()
mluis	1:d3b7bde3995c	759	// Avoid collision with JOIN ACCEPT @ SF12 being sent by GW (but we missed it)
mluis	1:d3b7bde3995c	760	? DNW2_SAFETY_ZONE
mluis	1:d3b7bde3995c	761	// Otherwise: randomize join (street lamp case):
mluis	1:d3b7bde3995c	762	// SF12:255, SF11:127, .., SF7:8secs
mluis	1:d3b7bde3995c	763	: DNW2_SAFETY_ZONE+rndDelay(255>>LMIC.datarate));
mluis	1:d3b7bde3995c	764	// 1 - triggers EV_JOIN_FAILED event
mluis	1:d3b7bde3995c	765	return failed;
mluis	0:62d1edcc13d1	766	}
mluis	0:62d1edcc13d1	767
mluis	0:62d1edcc13d1	768	//
mluis	0:62d1edcc13d1	769	// END: EU868 related stuff
mluis	0:62d1edcc13d1	770	//
mluis	0:62d1edcc13d1	771	// ================================================================================
mluis	1:d3b7bde3995c	772	#elif defined(CFG_us915)
mluis	0:62d1edcc13d1	773	// ================================================================================
mluis	0:62d1edcc13d1	774	//
mluis	0:62d1edcc13d1	775	// BEG: US915 related stuff
mluis	0:62d1edcc13d1	776	//
mluis	0:62d1edcc13d1	777
dudmuck	2:974cafbfb159	778	static void initDefaultChannels (void)
dudmuck	2:974cafbfb159	779	{
tmulrooney	5:464c1f2d6cbb	780	debug("initDefaultChannels enter\r\n");
dudmuck	2:974cafbfb159	781	#ifdef CHNL_HYBRID
dudmuck	2:974cafbfb159	782	int idx = CHNL_HYBRID >> 1;
dudmuck	2:974cafbfb159	783	LMIC.channelMap[0] = 0x0000;
dudmuck	2:974cafbfb159	784	LMIC.channelMap[1] = 0x0000;
dudmuck	2:974cafbfb159	785	LMIC.channelMap[2] = 0x0000;
dudmuck	2:974cafbfb159	786	LMIC.channelMap[3] = 0x0000;
dudmuck	2:974cafbfb159	787	if (CHNL_HYBRID & 1)
dudmuck	2:974cafbfb159	788	LMIC.channelMap[idx] = 0xff00;
dudmuck	2:974cafbfb159	789	else
dudmuck	2:974cafbfb159	790	LMIC.channelMap[idx] = 0x00ff;
dudmuck	2:974cafbfb159	791
dudmuck	2:974cafbfb159	792	LMIC.channelMap[4] = 1 << CHNL_HYBRID;
dudmuck	2:974cafbfb159	793	LMIC.txpow_limit = 20;
dudmuck	2:974cafbfb159	794	#else
mluis	0:62d1edcc13d1	795	for( u1_t i=0; i<4; i++ )
mluis	1:d3b7bde3995c	796	LMIC.channelMap[i] = 0xFFFF;
mluis	0:62d1edcc13d1	797	LMIC.channelMap[4] = 0x00FF;
dudmuck	2:974cafbfb159	798
dudmuck	2:974cafbfb159	799	LMIC.txpow_limit = 30;
dudmuck	2:974cafbfb159	800	#endif
dudmuck	2:974cafbfb159	801
dudmuck	2:974cafbfb159	802	LMIC.txpow = LMIC.txpow_limit;
dudmuck	2:974cafbfb159	803	LMIC.adrTxPow = LMIC.txpow_limit;
mluis	0:62d1edcc13d1	804	}
mluis	0:62d1edcc13d1	805
tmulrooney	5:464c1f2d6cbb	806	static u4_t convFreq (xref2u1_t ptr)
tmulrooney	5:464c1f2d6cbb	807	{
tmulrooney	5:464c1f2d6cbb	808	debug("convFreq enter\r\n");
mluis	0:62d1edcc13d1	809	u4_t freq = (os_rlsbf4(ptr-1) >> 8) * 100;
dudmuck	2:974cafbfb159	810	if( freq < US915_FREQ_MIN \|\| freq > US915_FREQ_MAX )
mluis	1:d3b7bde3995c	811	freq = 0;
mluis	0:62d1edcc13d1	812	return freq;
mluis	0:62d1edcc13d1	813	}
mluis	0:62d1edcc13d1	814
mluis	3:519c71d29a06	815
tmulrooney	5:464c1f2d6cbb	816	bit_t LMIC_setupChannel (u1_t chidx, u4_t freq, u2_t drmap, s1_t band)
tmulrooney	5:464c1f2d6cbb	817	{
tmulrooney	5:464c1f2d6cbb	818	debug("LMIC_setupChannel enter\r\n");
tmulrooney	5:464c1f2d6cbb	819	if( chidx < 72 \|\| chidx >= 72+MAX_XCHANNELS )
mluis	1:d3b7bde3995c	820	return 0; // channels 0..71 are hardwired
mluis	0:62d1edcc13d1	821	chidx -= 72;
mluis	0:62d1edcc13d1	822	LMIC.xchFreq[chidx] = freq;
mluis	1:d3b7bde3995c	823	LMIC.xchDrMap[chidx] = drmap==0 ? DR_RANGE_MAP(DR_SF10,DR_SF8C) : drmap;
mluis	0:62d1edcc13d1	824	LMIC.channelMap[chidx>>4] \|= (1<<(chidx&0xF));
mluis	0:62d1edcc13d1	825	return 1;
mluis	0:62d1edcc13d1	826	}
mluis	0:62d1edcc13d1	827
tmulrooney	5:464c1f2d6cbb	828	void LMIC_disableChannel (u1_t channel)
tmulrooney	5:464c1f2d6cbb	829	{
tmulrooney	5:464c1f2d6cbb	830	debug("LMIC_disableChannel enter\r\n");
tmulrooney	5:464c1f2d6cbb	831	if( channel < 72+MAX_XCHANNELS )
mluis	1:d3b7bde3995c	832	LMIC.channelMap[channel/4] &= ~(1<<(channel&0xF));
mluis	1:d3b7bde3995c	833	}
mluis	0:62d1edcc13d1	834
tmulrooney	5:464c1f2d6cbb	835	static u1_t mapChannels (u1_t chpage, u2_t chmap)
tmulrooney	5:464c1f2d6cbb	836	{
tmulrooney	5:464c1f2d6cbb	837	debug("mapChannels enter\r\n");
tmulrooney	5:464c1f2d6cbb	838	if( chpage == MCMD_LADR_CHP_125ON \|\| chpage == MCMD_LADR_CHP_125OFF )
tmulrooney	5:464c1f2d6cbb	839	{
mluis	1:d3b7bde3995c	840	u2_t en125 = chpage == MCMD_LADR_CHP_125ON ? 0xFFFF : 0x0000;
mluis	1:d3b7bde3995c	841	for( u1_t u=0; u<4; u++ )
mluis	1:d3b7bde3995c	842	LMIC.channelMap[u] = en125;
mluis	1:d3b7bde3995c	843	LMIC.channelMap[64/16] = chmap;
mluis	0:62d1edcc13d1	844	} else {
mluis	1:d3b7bde3995c	845	if( chpage >= (72+MAX_XCHANNELS+15)/16 )
mluis	1:d3b7bde3995c	846	return 0;
mluis	1:d3b7bde3995c	847	LMIC.channelMap[chpage] = chmap;
mluis	0:62d1edcc13d1	848	}
mluis	0:62d1edcc13d1	849	return 1;
mluis	0:62d1edcc13d1	850	}
mluis	0:62d1edcc13d1	851
tmulrooney	5:464c1f2d6cbb	852	static void updateTx (ostime_t txbeg)
tmulrooney	5:464c1f2d6cbb	853	{
tmulrooney	5:464c1f2d6cbb	854	debug("updateTx enter\r\n");
mluis	0:62d1edcc13d1	855	u1_t chnl = LMIC.txChnl;
dudmuck	2:974cafbfb159	856	#ifdef JOIN_REQ_DEBUG
dudmuck	2:974cafbfb159	857	printf("chnl%d ", chnl);
dudmuck	2:974cafbfb159	858	#endif /* JOIN_REQ_DEBUG */
mluis	0:62d1edcc13d1	859	if( chnl < 64 ) {
mluis	1:d3b7bde3995c	860	LMIC.freq = US915_125kHz_UPFBASE + chnl*US915_125kHz_UPFSTEP;
dudmuck	2:974cafbfb159	861
dudmuck	2:974cafbfb159	862	if (LMIC.opmode & OP_JOINING) {
dudmuck	2:974cafbfb159	863	/* use max allowed power for joining */
dudmuck	2:974cafbfb159	864	if (LMIC.txpow < LMIC.txpow_limit)
dudmuck	2:974cafbfb159	865	LMIC.txpow = LMIC.txpow_limit;
dudmuck	2:974cafbfb159	866	}
dudmuck	2:974cafbfb159	867
dudmuck	2:974cafbfb159	868	#ifdef JOIN_REQ_DEBUG
dudmuck	2:974cafbfb159	869	printf("%d (125khz)\r\n", LMIC.freq);
dudmuck	2:974cafbfb159	870	#endif /* JOIN_REQ_DEBUG */
mluis	1:d3b7bde3995c	871	return;
mluis	0:62d1edcc13d1	872	}
dudmuck	2:974cafbfb159	873
dudmuck	2:974cafbfb159	874	/* using 500KHz channel */
dudmuck	2:974cafbfb159	875	if (LMIC.txpow_limit >= 26)
dudmuck	2:974cafbfb159	876	LMIC.txpow = 26;
dudmuck	2:974cafbfb159	877	else
dudmuck	2:974cafbfb159	878	LMIC.txpow = LMIC.txpow_limit;
dudmuck	2:974cafbfb159	879
mluis	0:62d1edcc13d1	880	if( chnl < 64+8 ) {
mluis	1:d3b7bde3995c	881	LMIC.freq = US915_500kHz_UPFBASE + (chnl-64)*US915_500kHz_UPFSTEP;
dudmuck	2:974cafbfb159	882	#ifdef JOIN_REQ_DEBUG
dudmuck	2:974cafbfb159	883	printf("%d (500k)\r\n", LMIC.freq);
dudmuck	2:974cafbfb159	884	#endif /* JOIN_REQ_DEBUG */
mluis	0:62d1edcc13d1	885	} else {
mluis	1:d3b7bde3995c	886	ASSERT(chnl < 64+8+MAX_XCHANNELS);
mluis	1:d3b7bde3995c	887	LMIC.freq = LMIC.xchFreq[chnl-72];
dudmuck	2:974cafbfb159	888	#ifdef JOIN_REQ_DEBUG
dudmuck	2:974cafbfb159	889	printf("%d (x)\r\n", LMIC.freq);
dudmuck	2:974cafbfb159	890	#endif /* JOIN_REQ_DEBUG */
mluis	0:62d1edcc13d1	891	}
mluis	0:62d1edcc13d1	892
mluis	0:62d1edcc13d1	893	// Update global duty cycle stats
mluis	0:62d1edcc13d1	894	if( LMIC.globalDutyRate != 0 ) {
mluis	1:d3b7bde3995c	895	ostime_t airtime = calcAirTime(LMIC.rps, LMIC.dataLen);
mluis	1:d3b7bde3995c	896	LMIC.globalDutyAvail = txbeg + (airtime<<LMIC.globalDutyRate);
mluis	0:62d1edcc13d1	897	}
mluis	0:62d1edcc13d1	898	}
mluis	0:62d1edcc13d1	899
dudmuck	2:974cafbfb159	900	int count_bits(u2_t v)
dudmuck	2:974cafbfb159	901	{
dudmuck	2:974cafbfb159	902	int c;
dudmuck	2:974cafbfb159	903
dudmuck	2:974cafbfb159	904	for (c = 0; v; c++) {
dudmuck	2:974cafbfb159	905	v &= v - 1; // clear the last significant bit set
dudmuck	2:974cafbfb159	906	}
dudmuck	2:974cafbfb159	907
dudmuck	2:974cafbfb159	908	return c;
dudmuck	2:974cafbfb159	909	}
dudmuck	2:974cafbfb159	910
mluis	0:62d1edcc13d1	911	// US does not have duty cycling - return now as earliest TX time
mluis	0:62d1edcc13d1	912	#define nextTx(now) (_nextTx(),(now))
tmulrooney	5:464c1f2d6cbb	913	static void _nextTx (void)
tmulrooney	5:464c1f2d6cbb	914	{
tmulrooney	5:464c1f2d6cbb	915	debug("_nextTx enter\r\n");
dudmuck	2:974cafbfb159	916	u1_t prev_ch = LMIC.txChnl;
dudmuck	2:974cafbfb159	917	u1_t tries = 0;
dudmuck	2:974cafbfb159	918	u1_t en_cnt;
dudmuck	2:974cafbfb159	919
mluis	1:d3b7bde3995c	920	if( LMIC.datarate >= DR_SF8C ) { // 500kHz
dudmuck	2:974cafbfb159	921	#ifdef CHNL_HYBRID
dudmuck	2:974cafbfb159	922	LMIC.txChnl = 1 << CHNL_HYBRID; // only one channel possible
dudmuck	2:974cafbfb159	923	#else
dudmuck	2:974cafbfb159	924	en_cnt = count_bits(LMIC.channelMap[4]);
dudmuck	2:974cafbfb159	925	do {
dudmuck	2:974cafbfb159	926	do {
dudmuck	2:974cafbfb159	927	LMIC.chRnd = os_getRndU1() & 7;
dudmuck	2:974cafbfb159	928	if (++tries > 48)
dudmuck	2:974cafbfb159	929	return;
dudmuck	2:974cafbfb159	930	} while ( !(LMIC.channelMap[4] & (1 << LMIC.chRnd)) );
dudmuck	2:974cafbfb159	931	LMIC.txChnl = 64 + LMIC.chRnd;
dudmuck	2:974cafbfb159	932	if (en_cnt < 2)
dudmuck	2:974cafbfb159	933	prev_ch = LMIC.txChnl + 1; // not enough enabled, skip the following test
dudmuck	2:974cafbfb159	934
dudmuck	2:974cafbfb159	935	} while (prev_ch == LMIC.txChnl);
dudmuck	2:974cafbfb159	936	#endif
mluis	1:d3b7bde3995c	937	} else { // 125kHz
dudmuck	2:974cafbfb159	938	#ifdef CHNL_HYBRID
dudmuck	2:974cafbfb159	939	u1_t idx = CHNL_HYBRID >> 1;
dudmuck	2:974cafbfb159	940	en_cnt = count_bits(LMIC.channelMap[idx]);
dudmuck	2:974cafbfb159	941	do {
dudmuck	2:974cafbfb159	942	do {
dudmuck	2:974cafbfb159	943	LMIC.chRnd = os_getRndU1() & 15;
dudmuck	2:974cafbfb159	944	if (++tries > 96)
dudmuck	2:974cafbfb159	945	return;
dudmuck	2:974cafbfb159	946	} while ( !(LMIC.channelMap[idx] & (1 << LMIC.chRnd)) );
dudmuck	2:974cafbfb159	947	LMIC.txChnl = (idx << 4) + LMIC.chRnd;
dudmuck	2:974cafbfb159	948	if (en_cnt < 2)
dudmuck	2:974cafbfb159	949	prev_ch = LMIC.txChnl + 1; // not enough enabled, skip the following test
dudmuck	2:974cafbfb159	950
dudmuck	2:974cafbfb159	951	} while (prev_ch == LMIC.txChnl);
dudmuck	2:974cafbfb159	952	#else
dudmuck	2:974cafbfb159	953	en_cnt = count_bits(LMIC.channelMap[0]);
dudmuck	2:974cafbfb159	954	en_cnt += count_bits(LMIC.channelMap[1]);
dudmuck	2:974cafbfb159	955	en_cnt += count_bits(LMIC.channelMap[2]);
dudmuck	2:974cafbfb159	956	en_cnt += count_bits(LMIC.channelMap[3]);
dudmuck	2:974cafbfb159	957	do {
dudmuck	2:974cafbfb159	958	do {
dudmuck	2:974cafbfb159	959	LMIC.chRnd = os_getRndU1() & 63;
dudmuck	2:974cafbfb159	960	} while ( !(LMIC.channelMap[LMIC.chRnd >> 4] & (1 << (LMIC.chRnd & 15))) );
dudmuck	2:974cafbfb159	961	LMIC.txChnl = LMIC.chRnd;
dudmuck	2:974cafbfb159	962	if (en_cnt < 2)
dudmuck	2:974cafbfb159	963	prev_ch = LMIC.txChnl + 1; // not enough enabled, skip the following test
dudmuck	2:974cafbfb159	964
dudmuck	2:974cafbfb159	965	} while (prev_ch == LMIC.txChnl);
dudmuck	2:974cafbfb159	966	#endif
mluis	0:62d1edcc13d1	967	}
mluis	0:62d1edcc13d1	968	}
mluis	0:62d1edcc13d1	969
mluis	0:62d1edcc13d1	970	static void setBcnRxParams (void) {
mluis	0:62d1edcc13d1	971	LMIC.dataLen = 0;
mluis	1:d3b7bde3995c	972	LMIC.freq = US915_500kHz_DNFBASE + LMIC.bcnChnl * US915_500kHz_DNFSTEP;
mluis	0:62d1edcc13d1	973	LMIC.rps = setIh(setNocrc(dndr2rps((dr_t)DR_BCN),1),LEN_BCN);
mluis	0:62d1edcc13d1	974	}
mluis	0:62d1edcc13d1	975
mluis	1:d3b7bde3995c	976	#define setRx1Params() { \
mluis	0:62d1edcc13d1	977	LMIC.freq = US915_500kHz_DNFBASE + (LMIC.txChnl & 0x7) * US915_500kHz_DNFSTEP; \
mluis	1:d3b7bde3995c	978	if( /* TX datarate */LMIC.dndr < DR_SF8C ) \
mluis	1:d3b7bde3995c	979	LMIC.dndr += DR_SF10CR - DR_SF10; \
mluis	1:d3b7bde3995c	980	else if( LMIC.dndr == DR_SF8C ) \
mluis	1:d3b7bde3995c	981	LMIC.dndr = DR_SF7CR; \
mluis	1:d3b7bde3995c	982	LMIC.rps = dndr2rps(LMIC.dndr); \
mluis	0:62d1edcc13d1	983	}
mluis	0:62d1edcc13d1	984
tmulrooney	5:464c1f2d6cbb	985	static void initJoinLoop (void)
tmulrooney	5:464c1f2d6cbb	986	{
tmulrooney	5:464c1f2d6cbb	987	debug("initJoinLoop enter\r\n");
mluis	1:d3b7bde3995c	988	LMIC.chRnd = 0;
dudmuck	2:974cafbfb159	989	#ifdef CHNL_HYBRID
dudmuck	2:974cafbfb159	990	LMIC.joinBlockChnl = 0;
dudmuck	2:974cafbfb159	991	LMIC.joinBlock = CHNL_HYBRID;
dudmuck	2:974cafbfb159	992	LMIC.txChnl = LMIC.joinBlock << 3;
dudmuck	2:974cafbfb159	993	#else
mluis	1:d3b7bde3995c	994	LMIC.txChnl = 0;
dudmuck	2:974cafbfb159	995	LMIC.joinBlockChnl = 0;
dudmuck	2:974cafbfb159	996	LMIC.joinBlock = 0;
dudmuck	2:974cafbfb159	997	#endif
dudmuck	2:974cafbfb159	998	LMIC.datarate = DR_SF10;
dudmuck	2:974cafbfb159	999	LMIC.adrTxPow = LMIC.txpow_limit;
mluis	0:62d1edcc13d1	1000	ASSERT((LMIC.opmode & OP_NEXTCHNL)==0);
mluis	0:62d1edcc13d1	1001	LMIC.txend = os_getTime();
mluis	0:62d1edcc13d1	1002	setDrJoin(DRCHG_SET, DR_SF7);
mluis	0:62d1edcc13d1	1003	}
mluis	0:62d1edcc13d1	1004
tmulrooney	5:464c1f2d6cbb	1005	static ostime_t nextJoinState (void)
tmulrooney	5:464c1f2d6cbb	1006	{
tmulrooney	5:464c1f2d6cbb	1007	debug("nextJoinState enter\r\n");
tmulrooney	5:464c1f2d6cbb	1008	u1_t failed = 0;
dudmuck	2:974cafbfb159	1009
dudmuck	2:974cafbfb159	1010	if( LMIC.datarate == DR_SF8C ) {
dudmuck	2:974cafbfb159	1011	// attempted 500khz channel, try 125khz channel in next block
dudmuck	2:974cafbfb159	1012	LMIC.datarate = DR_SF10;
dudmuck	2:974cafbfb159	1013	if (++LMIC.joinBlock == 8) {
dudmuck	2:974cafbfb159	1014	LMIC.joinBlock = 0;
dudmuck	2:974cafbfb159	1015	if (++LMIC.joinBlockChnl == 8)
dudmuck	2:974cafbfb159	1016	LMIC.joinBlockChnl = 0;
dudmuck	2:974cafbfb159	1017	}
dudmuck	2:974cafbfb159	1018	LMIC.txChnl = (LMIC.joinBlock << 3) + LMIC.joinBlockChnl;
mluis	0:62d1edcc13d1	1019	} else {
dudmuck	2:974cafbfb159	1020	// attempted 125khz channel, try 500khz channel
dudmuck	2:974cafbfb159	1021	LMIC.datarate = DR_SF8C;
dudmuck	2:974cafbfb159	1022	LMIC.txChnl = LMIC.joinBlock + 64;
mluis	0:62d1edcc13d1	1023	}
dudmuck	2:974cafbfb159	1024	#ifdef JOIN_REQ_DEBUG
dudmuck	2:974cafbfb159	1025	printf("njs blk%d, dr%d, txChnl%d ", LMIC.joinBlock, LMIC.datarate, LMIC.txChnl); // crlf in updateTx()
dudmuck	2:974cafbfb159	1026	#endif /* JOIN_REQ_DEBUG */
dudmuck	2:974cafbfb159	1027
mluis	1:d3b7bde3995c	1028	LMIC.opmode &= ~OP_NEXTCHNL;
mluis	1:d3b7bde3995c	1029	LMIC.txend = os_getTime() +
mluis	1:d3b7bde3995c	1030	(isTESTMODE()
mluis	1:d3b7bde3995c	1031	// Avoid collision with JOIN ACCEPT being sent by GW (but we missed it - GW is still busy)
mluis	1:d3b7bde3995c	1032	? DNW2_SAFETY_ZONE
mluis	1:d3b7bde3995c	1033	// Otherwise: randomize join (street lamp case):
mluis	1:d3b7bde3995c	1034	// SF10:16, SF9=8,..SF8C:1secs
mluis	1:d3b7bde3995c	1035	: rndDelay(16>>LMIC.datarate));
mluis	1:d3b7bde3995c	1036	// 1 - triggers EV_JOIN_FAILED event
mluis	1:d3b7bde3995c	1037	return failed;
mluis	0:62d1edcc13d1	1038	}
mluis	0:62d1edcc13d1	1039
mluis	0:62d1edcc13d1	1040	//
mluis	0:62d1edcc13d1	1041	// END: US915 related stuff
mluis	0:62d1edcc13d1	1042	//
mluis	0:62d1edcc13d1	1043	// ================================================================================
mluis	0:62d1edcc13d1	1044	#else
mluis	0:62d1edcc13d1	1045	#error Unsupported frequency band!
mluis	0:62d1edcc13d1	1046	#endif
mluis	0:62d1edcc13d1	1047
mluis	0:62d1edcc13d1	1048
tmulrooney	5:464c1f2d6cbb	1049	static void runEngineUpdate (xref2osjob_t osjob)
tmulrooney	5:464c1f2d6cbb	1050	{
tmulrooney	5:464c1f2d6cbb	1051	debug("runEngineUpdate enter\r\n");
mluis	0:62d1edcc13d1	1052	engineUpdate();
mluis	0:62d1edcc13d1	1053	}
mluis	0:62d1edcc13d1	1054
mluis	0:62d1edcc13d1	1055
tmulrooney	5:464c1f2d6cbb	1056	static void reportEvent (ev_t ev)
tmulrooney	5:464c1f2d6cbb	1057	{
tmulrooney	5:464c1f2d6cbb	1058	debug("reportEvent enter %d\r\n",ev);
mluis	0:62d1edcc13d1	1059	EV(devCond, INFO, (e_.reason = EV::devCond_t::LMIC_EV,
mluis	1:d3b7bde3995c	1060	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1061	e_.info = ev));
mluis	0:62d1edcc13d1	1062	ON_LMIC_EVENT(ev);
mluis	0:62d1edcc13d1	1063	engineUpdate();
mluis	0:62d1edcc13d1	1064	}
mluis	0:62d1edcc13d1	1065
mluis	0:62d1edcc13d1	1066
mluis	1:d3b7bde3995c	1067	static void runReset (xref2osjob_t osjob) {
mluis	1:d3b7bde3995c	1068	// Disable session
mluis	1:d3b7bde3995c	1069	LMIC_reset();
mluis	1:d3b7bde3995c	1070	LMIC_startJoining();
mluis	1:d3b7bde3995c	1071	reportEvent(EV_RESET);
mluis	1:d3b7bde3995c	1072	}
mluis	1:d3b7bde3995c	1073
mluis	0:62d1edcc13d1	1074	static void stateJustJoined (void) {
mluis	0:62d1edcc13d1	1075	LMIC.seqnoDn = LMIC.seqnoUp = 0;
mluis	0:62d1edcc13d1	1076	LMIC.rejoinCnt = 0;
mluis	0:62d1edcc13d1	1077	LMIC.dnConf = LMIC.adrChanged = LMIC.ladrAns = LMIC.devsAns = 0;
mluis	0:62d1edcc13d1	1078	LMIC.moreData = LMIC.dn2Ans = LMIC.snchAns = LMIC.dutyCapAns = 0;
mluis	0:62d1edcc13d1	1079	LMIC.pingSetAns = 0;
mluis	0:62d1edcc13d1	1080	LMIC.upRepeat = 0;
mluis	0:62d1edcc13d1	1081	LMIC.adrAckReq = LINK_CHECK_INIT;
mluis	0:62d1edcc13d1	1082	LMIC.dn2Dr = DR_DNW2;
mluis	0:62d1edcc13d1	1083	LMIC.dn2Freq = FREQ_DNW2;
mluis	0:62d1edcc13d1	1084	LMIC.bcnChnl = CHNL_BCN;
mluis	0:62d1edcc13d1	1085	LMIC.ping.freq = FREQ_PING;
mluis	0:62d1edcc13d1	1086	LMIC.ping.dr = DR_PING;
mluis	0:62d1edcc13d1	1087	}
mluis	0:62d1edcc13d1	1088
mluis	0:62d1edcc13d1	1089
mluis	0:62d1edcc13d1	1090	// ================================================================================
mluis	0:62d1edcc13d1	1091	// Decoding frames
mluis	0:62d1edcc13d1	1092
mluis	0:62d1edcc13d1	1093
mluis	0:62d1edcc13d1	1094	// Decode beacon - do not overwrite bcninfo unless we have a match!
mluis	0:62d1edcc13d1	1095	static int decodeBeacon (void) {
mluis	0:62d1edcc13d1	1096	ASSERT(LMIC.dataLen == LEN_BCN); // implicit header RX guarantees this
mluis	0:62d1edcc13d1	1097	xref2u1_t d = LMIC.frame;
mluis	1:d3b7bde3995c	1098	if(
dudmuck	2:974cafbfb159	1099	#ifdef CFG_eu868
mluis	1:d3b7bde3995c	1100	d[OFF_BCN_CRC1] != (u1_t)os_crc16(d,OFF_BCN_CRC1)
dudmuck	2:974cafbfb159	1101	#elif defined(CFG_us915)
mluis	1:d3b7bde3995c	1102	os_rlsbf2(&d[OFF_BCN_CRC1]) != os_crc16(d,OFF_BCN_CRC1)
mluis	1:d3b7bde3995c	1103	#endif
mluis	1:d3b7bde3995c	1104	)
mluis	1:d3b7bde3995c	1105	return 0; // first (common) part fails CRC check
mluis	0:62d1edcc13d1	1106	// First set of fields is ok
mluis	0:62d1edcc13d1	1107	u4_t bcnnetid = os_rlsbf4(&d[OFF_BCN_NETID]) & 0xFFFFFF;
mluis	0:62d1edcc13d1	1108	if( bcnnetid != LMIC.netid )
mluis	1:d3b7bde3995c	1109	return -1; // not the beacon we're looking for
mluis	0:62d1edcc13d1	1110
mluis	0:62d1edcc13d1	1111	LMIC.bcninfo.flags &= ~(BCN_PARTIAL\|BCN_FULL);
mluis	0:62d1edcc13d1	1112	// Match - update bcninfo structure
mluis	1:d3b7bde3995c	1113	LMIC.bcninfo.snr = LMIC.snr;
mluis	1:d3b7bde3995c	1114	LMIC.bcninfo.rssi = LMIC.rssi;
mluis	0:62d1edcc13d1	1115	LMIC.bcninfo.txtime = LMIC.rxtime - AIRTIME_BCN_osticks;
mluis	0:62d1edcc13d1	1116	LMIC.bcninfo.time = os_rlsbf4(&d[OFF_BCN_TIME]);
mluis	0:62d1edcc13d1	1117	LMIC.bcninfo.flags \|= BCN_PARTIAL;
mluis	0:62d1edcc13d1	1118
mluis	0:62d1edcc13d1	1119	// Check 2nd set
mluis	0:62d1edcc13d1	1120	if( os_rlsbf2(&d[OFF_BCN_CRC2]) != os_crc16(d,OFF_BCN_CRC2) )
mluis	1:d3b7bde3995c	1121	return 1;
mluis	0:62d1edcc13d1	1122	// Second set of fields is ok
mluis	0:62d1edcc13d1	1123	LMIC.bcninfo.lat = (s4_t)os_rlsbf4(&d[OFF_BCN_LAT-1]) >> 8; // read as signed 24-bit
mluis	0:62d1edcc13d1	1124	LMIC.bcninfo.lon = (s4_t)os_rlsbf4(&d[OFF_BCN_LON-1]) >> 8; // ditto
mluis	0:62d1edcc13d1	1125	LMIC.bcninfo.info = d[OFF_BCN_INFO];
mluis	0:62d1edcc13d1	1126	LMIC.bcninfo.flags \|= BCN_FULL;
mluis	0:62d1edcc13d1	1127	return 2;
mluis	0:62d1edcc13d1	1128	}
mluis	0:62d1edcc13d1	1129
mluis	0:62d1edcc13d1	1130
mluis	0:62d1edcc13d1	1131	static bit_t decodeFrame (void) {
mluis	0:62d1edcc13d1	1132	xref2u1_t d = LMIC.frame;
mluis	0:62d1edcc13d1	1133	u1_t hdr = d[0];
mluis	0:62d1edcc13d1	1134	u1_t ftype = hdr & HDR_FTYPE;
mluis	0:62d1edcc13d1	1135	int dlen = LMIC.dataLen;
mluis	0:62d1edcc13d1	1136	if( dlen < OFF_DAT_OPTS+4 \|\|
mluis	1:d3b7bde3995c	1137	(hdr & HDR_MAJOR) != HDR_MAJOR_V1 \|\|
mluis	1:d3b7bde3995c	1138	(ftype != HDR_FTYPE_DADN && ftype != HDR_FTYPE_DCDN) ) {
mluis	1:d3b7bde3995c	1139	// Basic sanity checks failed
mluis	1:d3b7bde3995c	1140	EV(specCond, WARN, (e_.reason = EV::specCond_t::UNEXPECTED_FRAME,
mluis	1:d3b7bde3995c	1141	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1142	e_.info = dlen < 4 ? 0 : os_rlsbf4(&d[dlen-4]),
mluis	1:d3b7bde3995c	1143	e_.info2 = hdr + (dlen<<8)));
mluis	0:62d1edcc13d1	1144	norx:
mluis	1:d3b7bde3995c	1145	LMIC.dataLen = 0;
mluis	1:d3b7bde3995c	1146	return 0;
mluis	0:62d1edcc13d1	1147	}
mluis	0:62d1edcc13d1	1148	// Validate exact frame length
mluis	0:62d1edcc13d1	1149	// Note: device address was already read+evaluated in order to arrive here.
mluis	0:62d1edcc13d1	1150	int fct = d[OFF_DAT_FCT];
mluis	0:62d1edcc13d1	1151	u4_t addr = os_rlsbf4(&d[OFF_DAT_ADDR]);
mluis	0:62d1edcc13d1	1152	u4_t seqno = os_rlsbf2(&d[OFF_DAT_SEQNO]);
mluis	0:62d1edcc13d1	1153	int olen = fct & FCT_OPTLEN;
mluis	0:62d1edcc13d1	1154	int ackup = (fct & FCT_ACK) != 0 ? 1 : 0; // ACK last up frame
mluis	0:62d1edcc13d1	1155	int poff = OFF_DAT_OPTS+olen;
mluis	0:62d1edcc13d1	1156	int pend = dlen-4; // MIC
mluis	0:62d1edcc13d1	1157
mluis	0:62d1edcc13d1	1158	if( addr != LMIC.devaddr ) {
mluis	1:d3b7bde3995c	1159	EV(specCond, WARN, (e_.reason = EV::specCond_t::ALIEN_ADDRESS,
mluis	1:d3b7bde3995c	1160	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1161	e_.info = addr,
mluis	1:d3b7bde3995c	1162	e_.info2 = LMIC.devaddr));
mluis	1:d3b7bde3995c	1163	goto norx;
mluis	0:62d1edcc13d1	1164	}
mluis	0:62d1edcc13d1	1165	if( poff > pend ) {
mluis	1:d3b7bde3995c	1166	EV(specCond, ERR, (e_.reason = EV::specCond_t::CORRUPTED_FRAME,
mluis	1:d3b7bde3995c	1167	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1168	e_.info = 0x1000000 + (poff-pend) + (fct<<8) + (dlen<<16)));
mluis	1:d3b7bde3995c	1169	goto norx;
mluis	0:62d1edcc13d1	1170	}
mluis	0:62d1edcc13d1	1171
mluis	0:62d1edcc13d1	1172	int port = -1;
mluis	0:62d1edcc13d1	1173	int replayConf = 0;
mluis	0:62d1edcc13d1	1174
mluis	0:62d1edcc13d1	1175	if( pend > poff )
mluis	1:d3b7bde3995c	1176	port = d[poff++];
mluis	0:62d1edcc13d1	1177
mluis	0:62d1edcc13d1	1178	seqno = LMIC.seqnoDn + (u2_t)(seqno - LMIC.seqnoDn);
mluis	0:62d1edcc13d1	1179
mluis	0:62d1edcc13d1	1180	if( !aes_verifyMic(LMIC.nwkKey, LMIC.devaddr, seqno, /dn/1, d, pend) ) {
mluis	1:d3b7bde3995c	1181	EV(spe3Cond, ERR, (e_.reason = EV::spe3Cond_t::CORRUPTED_MIC,
mluis	1:d3b7bde3995c	1182	e_.eui1 = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1183	e_.info1 = Base::lsbf4(&d[pend]),
mluis	1:d3b7bde3995c	1184	e_.info2 = seqno,
mluis	1:d3b7bde3995c	1185	e_.info3 = LMIC.devaddr));
mluis	0:62d1edcc13d1	1186	goto norx;
mluis	0:62d1edcc13d1	1187	}
mluis	1:d3b7bde3995c	1188	if( seqno < LMIC.seqnoDn ) {
mluis	1:d3b7bde3995c	1189	if( (s4_t)seqno > (s4_t)LMIC.seqnoDn ) {
mluis	1:d3b7bde3995c	1190	EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_ROLL_OVER,
mluis	1:d3b7bde3995c	1191	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1192	e_.info = LMIC.seqnoDn,
mluis	1:d3b7bde3995c	1193	e_.info2 = seqno));
mluis	1:d3b7bde3995c	1194	goto norx;
mluis	1:d3b7bde3995c	1195	}
mluis	1:d3b7bde3995c	1196	if( seqno != LMIC.seqnoDn-1 \|\| !LMIC.dnConf \|\| ftype != HDR_FTYPE_DCDN ) {
mluis	1:d3b7bde3995c	1197	EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_OBSOLETE,
mluis	1:d3b7bde3995c	1198	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1199	e_.info = LMIC.seqnoDn,
mluis	1:d3b7bde3995c	1200	e_.info2 = seqno));
mluis	1:d3b7bde3995c	1201	goto norx;
mluis	1:d3b7bde3995c	1202	}
mluis	1:d3b7bde3995c	1203	// Replay of previous sequence number allowed only if
mluis	1:d3b7bde3995c	1204	// previous frame and repeated both requested confirmation
mluis	1:d3b7bde3995c	1205	replayConf = 1;
mluis	0:62d1edcc13d1	1206	}
mluis	0:62d1edcc13d1	1207	else {
mluis	1:d3b7bde3995c	1208	if( seqno > LMIC.seqnoDn ) {
mluis	1:d3b7bde3995c	1209	EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_SKIP,
mluis	1:d3b7bde3995c	1210	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1211	e_.info = LMIC.seqnoDn,
mluis	1:d3b7bde3995c	1212	e_.info2 = seqno));
mluis	1:d3b7bde3995c	1213	}
mluis	1:d3b7bde3995c	1214	LMIC.seqnoDn = seqno+1; // next number to be expected
mluis	1:d3b7bde3995c	1215	DO_DEVDB(LMIC.seqnoDn,seqnoDn);
mluis	1:d3b7bde3995c	1216	// DN frame requested confirmation - provide ACK once with next UP frame
mluis	1:d3b7bde3995c	1217	LMIC.dnConf = (ftype == HDR_FTYPE_DCDN ? FCT_ACK : 0);
mluis	0:62d1edcc13d1	1218	}
mluis	0:62d1edcc13d1	1219
mluis	0:62d1edcc13d1	1220	if( LMIC.dnConf \|\| (fct & FCT_MORE) )
mluis	1:d3b7bde3995c	1221	LMIC.opmode \|= OP_POLL;
mluis	0:62d1edcc13d1	1222
mluis	0:62d1edcc13d1	1223	// We heard from network
mluis	1:d3b7bde3995c	1224	LMIC.adrChanged = LMIC.rejoinCnt = 0;
mluis	1:d3b7bde3995c	1225	if( LMIC.adrAckReq != LINK_CHECK_OFF )
mluis	1:d3b7bde3995c	1226	LMIC.adrAckReq = LINK_CHECK_INIT;
mluis	0:62d1edcc13d1	1227
mluis	0:62d1edcc13d1	1228	// Process OPTS
mluis	1:d3b7bde3995c	1229	int m = LMIC.rssi - RSSI_OFF - getSensitivity(LMIC.rps);
mluis	0:62d1edcc13d1	1230	LMIC.margin = m < 0 ? 0 : m > 254 ? 254 : m;
mluis	0:62d1edcc13d1	1231
mluis	0:62d1edcc13d1	1232	xref2u1_t opts = &d[OFF_DAT_OPTS];
mluis	0:62d1edcc13d1	1233	int oidx = 0;
mluis	0:62d1edcc13d1	1234	while( oidx < olen ) {
mluis	1:d3b7bde3995c	1235	switch( opts[oidx] ) {
mluis	1:d3b7bde3995c	1236	case MCMD_LCHK_ANS: {
mluis	1:d3b7bde3995c	1237	//int gwmargin = opts[oidx+1];
mluis	1:d3b7bde3995c	1238	//int ngws = opts[oidx+2];
mluis	1:d3b7bde3995c	1239	oidx += 3;
mluis	1:d3b7bde3995c	1240	continue;
mluis	1:d3b7bde3995c	1241	}
mluis	1:d3b7bde3995c	1242	case MCMD_LADR_REQ: {
mluis	1:d3b7bde3995c	1243	u1_t p1 = opts[oidx+1]; // txpow + DR
mluis	1:d3b7bde3995c	1244	u2_t chmap = os_rlsbf2(&opts[oidx+2]);// list of enabled channels
mluis	1:d3b7bde3995c	1245	u1_t chpage = opts[oidx+4] & MCMD_LADR_CHPAGE_MASK; // channel page
mluis	1:d3b7bde3995c	1246	u1_t uprpt = opts[oidx+4] & MCMD_LADR_REPEAT_MASK; // up repeat count
mluis	1:d3b7bde3995c	1247	oidx += 5;
mluis	0:62d1edcc13d1	1248
mluis	1:d3b7bde3995c	1249	LMIC.ladrAns = 0x80 \| // Include an answer into next frame up
mluis	1:d3b7bde3995c	1250	MCMD_LADR_ANS_POWACK \| MCMD_LADR_ANS_CHACK \| MCMD_LADR_ANS_DRACK;
mluis	1:d3b7bde3995c	1251	if( !mapChannels(chpage, chmap) )
mluis	1:d3b7bde3995c	1252	LMIC.ladrAns &= ~MCMD_LADR_ANS_CHACK;
mluis	1:d3b7bde3995c	1253	dr_t dr = (dr_t)(p1>>MCMD_LADR_DR_SHIFT);
mluis	1:d3b7bde3995c	1254	if( !validDR(dr) ) {
mluis	1:d3b7bde3995c	1255	LMIC.ladrAns &= ~MCMD_LADR_ANS_DRACK;
mluis	1:d3b7bde3995c	1256	EV(specCond, ERR, (e_.reason = EV::specCond_t::BAD_MAC_CMD,
mluis	1:d3b7bde3995c	1257	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1258	e_.info = Base::lsbf4(&d[pend]),
mluis	1:d3b7bde3995c	1259	e_.info2 = Base::msbf4(&opts[oidx-4])));
mluis	1:d3b7bde3995c	1260	}
mluis	1:d3b7bde3995c	1261	if( (LMIC.ladrAns & 0x7F) == (MCMD_LADR_ANS_POWACK \| MCMD_LADR_ANS_CHACK \| MCMD_LADR_ANS_DRACK) ) {
mluis	1:d3b7bde3995c	1262	// Nothing went wrong - use settings
mluis	1:d3b7bde3995c	1263	LMIC.upRepeat = uprpt;
mluis	1:d3b7bde3995c	1264	setDrTxpow(DRCHG_NWKCMD, dr, pow2dBm(p1));
mluis	1:d3b7bde3995c	1265	}
mluis	1:d3b7bde3995c	1266	LMIC.adrChanged = 1; // Trigger an ACK to NWK
mluis	1:d3b7bde3995c	1267	continue;
mluis	0:62d1edcc13d1	1268	}
mluis	1:d3b7bde3995c	1269	case MCMD_DEVS_REQ: {
mluis	1:d3b7bde3995c	1270	LMIC.devsAns = 1;
mluis	1:d3b7bde3995c	1271	oidx += 1;
mluis	1:d3b7bde3995c	1272	continue;
mluis	1:d3b7bde3995c	1273	}
mluis	1:d3b7bde3995c	1274	case MCMD_DN2P_SET: {
mluis	1:d3b7bde3995c	1275	dr_t dr = (dr_t)(opts[oidx+1] & 0x0F);
mluis	1:d3b7bde3995c	1276	u4_t freq = convFreq(&opts[oidx+2]);
mluis	1:d3b7bde3995c	1277	oidx += 5;
mluis	1:d3b7bde3995c	1278	LMIC.dn2Ans = 0x80; // answer pending
mluis	1:d3b7bde3995c	1279	if( validDR(dr) )
mluis	1:d3b7bde3995c	1280	LMIC.dn2Ans \|= MCMD_DN2P_ANS_DRACK;
mluis	1:d3b7bde3995c	1281	if( freq != 0 )
mluis	1:d3b7bde3995c	1282	LMIC.dn2Ans \|= MCMD_DN2P_ANS_CHACK;
mluis	1:d3b7bde3995c	1283	if( LMIC.dn2Ans == (0x80\|MCMD_DN2P_ANS_DRACK\|MCMD_DN2P_ANS_CHACK) ) {
mluis	1:d3b7bde3995c	1284	LMIC.dn2Dr = dr;
mluis	1:d3b7bde3995c	1285	LMIC.dn2Freq = freq;
mluis	1:d3b7bde3995c	1286	DO_DEVDB(LMIC.dn2Dr,dn2Dr);
mluis	1:d3b7bde3995c	1287	DO_DEVDB(LMIC.dn2Freq,dn2Freq);
mluis	1:d3b7bde3995c	1288	}
mluis	1:d3b7bde3995c	1289	continue;
mluis	0:62d1edcc13d1	1290	}
mluis	1:d3b7bde3995c	1291	case MCMD_DCAP_REQ: {
mluis	1:d3b7bde3995c	1292	u1_t cap = opts[oidx+1];
mluis	1:d3b7bde3995c	1293	oidx += 2;
mluis	1:d3b7bde3995c	1294	// A value cap=0xFF means device is OFF unless enabled again manually.
mluis	1:d3b7bde3995c	1295	if( cap==0xFF )
mluis	1:d3b7bde3995c	1296	LMIC.opmode \|= OP_SHUTDOWN; // stop any sending
mluis	1:d3b7bde3995c	1297	LMIC.globalDutyRate = cap & 0xF;
mluis	1:d3b7bde3995c	1298	LMIC.globalDutyAvail = os_getTime();
mluis	1:d3b7bde3995c	1299	DO_DEVDB(cap,dutyCap);
mluis	1:d3b7bde3995c	1300	LMIC.dutyCapAns = 1;
mluis	1:d3b7bde3995c	1301	continue;
mluis	1:d3b7bde3995c	1302	}
mluis	1:d3b7bde3995c	1303	case MCMD_SNCH_REQ: {
mluis	1:d3b7bde3995c	1304	u1_t chidx = opts[oidx+1]; // channel
mluis	1:d3b7bde3995c	1305	u4_t freq = convFreq(&opts[oidx+2]); // freq
mluis	1:d3b7bde3995c	1306	u1_t drs = opts[oidx+5]; // datarate span
mluis	1:d3b7bde3995c	1307	LMIC.snchAns = 0x80;
mluis	1:d3b7bde3995c	1308	if( freq != 0 && LMIC_setupChannel(chidx, freq, DR_RANGE_MAP(drs&0xF,drs>>4), -1) )
mluis	1:d3b7bde3995c	1309	LMIC.snchAns \|= MCMD_SNCH_ANS_DRACK\|MCMD_SNCH_ANS_FQACK;
mluis	1:d3b7bde3995c	1310	oidx += 6;
mluis	1:d3b7bde3995c	1311	continue;
mluis	0:62d1edcc13d1	1312	}
mluis	1:d3b7bde3995c	1313	case MCMD_PING_SET: {
mluis	1:d3b7bde3995c	1314	u4_t freq = convFreq(&opts[oidx+1]);
mluis	1:d3b7bde3995c	1315	oidx += 4;
mluis	1:d3b7bde3995c	1316	u1_t flags = 0x80;
mluis	1:d3b7bde3995c	1317	if( freq != 0 ) {
mluis	1:d3b7bde3995c	1318	flags \|= MCMD_PING_ANS_FQACK;
mluis	1:d3b7bde3995c	1319	LMIC.ping.freq = freq;
mluis	1:d3b7bde3995c	1320	DO_DEVDB(LMIC.ping.intvExp, pingIntvExp);
mluis	1:d3b7bde3995c	1321	DO_DEVDB(LMIC.ping.freq, pingFreq);
mluis	1:d3b7bde3995c	1322	DO_DEVDB(LMIC.ping.dr, pingDr);
mluis	1:d3b7bde3995c	1323	}
mluis	1:d3b7bde3995c	1324	LMIC.pingSetAns = flags;
mluis	1:d3b7bde3995c	1325	continue;
mluis	1:d3b7bde3995c	1326	}
mluis	1:d3b7bde3995c	1327	case MCMD_BCNI_ANS: {
mluis	1:d3b7bde3995c	1328	// Ignore if tracking already enabled
mluis	1:d3b7bde3995c	1329	if( (LMIC.opmode & OP_TRACK) == 0 ) {
mluis	1:d3b7bde3995c	1330	LMIC.bcnChnl = opts[oidx+3];
mluis	1:d3b7bde3995c	1331	// Enable tracking - bcninfoTries
mluis	1:d3b7bde3995c	1332	LMIC.opmode \|= OP_TRACK;
mluis	1:d3b7bde3995c	1333	// Cleared later in txComplete handling - triggers EV_BEACON_FOUND
mluis	1:d3b7bde3995c	1334	ASSERT(LMIC.bcninfoTries!=0);
mluis	1:d3b7bde3995c	1335	// Setup RX parameters
mluis	1:d3b7bde3995c	1336	LMIC.bcninfo.txtime = (LMIC.rxtime
mluis	1:d3b7bde3995c	1337	+ ms2osticks(os_rlsbf2(&opts[oidx+1]) * MCMD_BCNI_TUNIT)
mluis	1:d3b7bde3995c	1338	+ ms2osticksCeil(MCMD_BCNI_TUNIT/2)
mluis	1:d3b7bde3995c	1339	- BCN_INTV_osticks);
mluis	1:d3b7bde3995c	1340	LMIC.bcninfo.flags = 0; // txtime above cannot be used as reference (BCN_PARTIAL\|BCN_FULL cleared)
mluis	1:d3b7bde3995c	1341	calcBcnRxWindowFromMillis(MCMD_BCNI_TUNIT,1); // error of +/-N ms
mluis	0:62d1edcc13d1	1342
mluis	1:d3b7bde3995c	1343	EV(lostFrame, INFO, (e_.reason = EV::lostFrame_t::MCMD_BCNI_ANS,
mluis	1:d3b7bde3995c	1344	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1345	e_.lostmic = Base::lsbf4(&d[pend]),
mluis	1:d3b7bde3995c	1346	e_.info = (LMIC.missedBcns \|
mluis	1:d3b7bde3995c	1347	(osticks2us(LMIC.bcninfo.txtime + BCN_INTV_osticks
mluis	1:d3b7bde3995c	1348	- LMIC.bcnRxtime) << 8)),
mluis	1:d3b7bde3995c	1349	e_.time = MAIN::CDEV->ostime2ustime(LMIC.bcninfo.txtime + BCN_INTV_osticks)));
mluis	1:d3b7bde3995c	1350	}
mluis	1:d3b7bde3995c	1351	oidx += 4;
mluis	1:d3b7bde3995c	1352	continue;
mluis	0:62d1edcc13d1	1353	}
mluis	1:d3b7bde3995c	1354	}
mluis	1:d3b7bde3995c	1355	EV(specCond, ERR, (e_.reason = EV::specCond_t::BAD_MAC_CMD,
mluis	1:d3b7bde3995c	1356	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1357	e_.info = Base::lsbf4(&d[pend]),
mluis	1:d3b7bde3995c	1358	e_.info2 = Base::msbf4(&opts[oidx])));
mluis	1:d3b7bde3995c	1359	break;
mluis	0:62d1edcc13d1	1360	}
mluis	0:62d1edcc13d1	1361	if( oidx != olen ) {
mluis	1:d3b7bde3995c	1362	EV(specCond, ERR, (e_.reason = EV::specCond_t::CORRUPTED_FRAME,
mluis	1:d3b7bde3995c	1363	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1364	e_.info = 0x1000000 + (oidx) + (olen<<8)));
mluis	0:62d1edcc13d1	1365	}
mluis	0:62d1edcc13d1	1366
mluis	0:62d1edcc13d1	1367	if( !replayConf ) {
mluis	1:d3b7bde3995c	1368	// Handle payload only if not a replay
mluis	1:d3b7bde3995c	1369	// Decrypt payload - if any
mluis	1:d3b7bde3995c	1370	if( port >= 0 && pend-poff > 0 )
mluis	1:d3b7bde3995c	1371	aes_cipher(port <= 0 ? LMIC.nwkKey : LMIC.artKey, LMIC.devaddr, seqno, /dn/1, d+poff, pend-poff);
mluis	0:62d1edcc13d1	1372
mluis	1:d3b7bde3995c	1373	EV(dfinfo, DEBUG, (e_.deveui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1374	e_.devaddr = LMIC.devaddr,
mluis	1:d3b7bde3995c	1375	e_.seqno = seqno,
mluis	1:d3b7bde3995c	1376	e_.flags = (port < 0 ? EV::dfinfo_t::NOPORT : 0) \| EV::dfinfo_t::DN,
mluis	1:d3b7bde3995c	1377	e_.mic = Base::lsbf4(&d[pend]),
mluis	1:d3b7bde3995c	1378	e_.hdr = d[LORA::OFF_DAT_HDR],
mluis	1:d3b7bde3995c	1379	e_.fct = d[LORA::OFF_DAT_FCT],
mluis	1:d3b7bde3995c	1380	e_.port = port,
mluis	1:d3b7bde3995c	1381	e_.plen = dlen,
mluis	1:d3b7bde3995c	1382	e_.opts.length = olen,
mluis	1:d3b7bde3995c	1383	memcpy(&e_.opts[0], opts, olen)));
mluis	0:62d1edcc13d1	1384	} else {
mluis	1:d3b7bde3995c	1385	EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_REPLAY,
mluis	1:d3b7bde3995c	1386	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1387	e_.info = Base::lsbf4(&d[pend]),
mluis	1:d3b7bde3995c	1388	e_.info2 = seqno));
mluis	0:62d1edcc13d1	1389	}
mluis	0:62d1edcc13d1	1390
mluis	0:62d1edcc13d1	1391	if( // NWK acks but we don't have a frame pending
mluis	1:d3b7bde3995c	1392	(ackup && LMIC.txCnt == 0) \|\|
mluis	1:d3b7bde3995c	1393	// We sent up confirmed and we got a response in DNW1/DNW2
mluis	1:d3b7bde3995c	1394	// BUT it did not carry an ACK - this should never happen
mluis	1:d3b7bde3995c	1395	// Do not resend and assume frame was not ACKed.
mluis	1:d3b7bde3995c	1396	(!ackup && LMIC.txCnt != 0) ) {
mluis	1:d3b7bde3995c	1397	EV(specCond, ERR, (e_.reason = EV::specCond_t::SPURIOUS_ACK,
mluis	1:d3b7bde3995c	1398	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1399	e_.info = seqno,
mluis	1:d3b7bde3995c	1400	e_.info2 = ackup));
mluis	0:62d1edcc13d1	1401	}
mluis	0:62d1edcc13d1	1402
mluis	0:62d1edcc13d1	1403	if( LMIC.txCnt != 0 ) // we requested an ACK
mluis	1:d3b7bde3995c	1404	LMIC.txrxFlags \|= ackup ? TXRX_ACK : TXRX_NACK;
mluis	0:62d1edcc13d1	1405
mluis	0:62d1edcc13d1	1406	if( port < 0 ) {
mluis	1:d3b7bde3995c	1407	LMIC.txrxFlags \|= TXRX_NOPORT;
mluis	1:d3b7bde3995c	1408	LMIC.dataBeg = poff;
mluis	1:d3b7bde3995c	1409	LMIC.dataLen = 0;
mluis	0:62d1edcc13d1	1410	} else {
mluis	1:d3b7bde3995c	1411	LMIC.txrxFlags \|= TXRX_PORT;
mluis	1:d3b7bde3995c	1412	LMIC.dataBeg = poff;
mluis	1:d3b7bde3995c	1413	LMIC.dataLen = pend-poff;
mluis	0:62d1edcc13d1	1414	}
mluis	0:62d1edcc13d1	1415	return 1;
mluis	0:62d1edcc13d1	1416	}
mluis	0:62d1edcc13d1	1417
mluis	0:62d1edcc13d1	1418
mluis	0:62d1edcc13d1	1419	// ================================================================================
mluis	0:62d1edcc13d1	1420	// TX/RX transaction support
mluis	0:62d1edcc13d1	1421
mluis	0:62d1edcc13d1	1422
mluis	0:62d1edcc13d1	1423	static void setupRx2 (void) {
mluis	0:62d1edcc13d1	1424	LMIC.txrxFlags = TXRX_DNW2;
mluis	0:62d1edcc13d1	1425	LMIC.rps = dndr2rps(LMIC.dn2Dr);
mluis	0:62d1edcc13d1	1426	LMIC.freq = LMIC.dn2Freq;
mluis	0:62d1edcc13d1	1427	LMIC.dataLen = 0;
mluis	0:62d1edcc13d1	1428	os_radio(RADIO_RX);
mluis	0:62d1edcc13d1	1429	}
mluis	0:62d1edcc13d1	1430
mluis	0:62d1edcc13d1	1431
mluis	0:62d1edcc13d1	1432	static void schedRx2 (ostime_t delay, osjobcb_t func) {
mluis	0:62d1edcc13d1	1433	// Add 1.5 symbols we need 5 out of 8. Try to sync 1.5 symbols into the preamble.
mluis	0:62d1edcc13d1	1434	LMIC.rxtime = LMIC.txend + delay + (PAMBL_SYMS-MINRX_SYMS)*dr2hsym(LMIC.dn2Dr);
mluis	0:62d1edcc13d1	1435	os_setTimedCallback(&LMIC.osjob, LMIC.rxtime - RX_RAMPUP, func);
mluis	0:62d1edcc13d1	1436	}
mluis	0:62d1edcc13d1	1437
mluis	0:62d1edcc13d1	1438	static void setupRx1 (osjobcb_t func) {
mluis	0:62d1edcc13d1	1439	LMIC.txrxFlags = TXRX_DNW1;
mluis	0:62d1edcc13d1	1440	// Turn LMIC.rps from TX over to RX
mluis	0:62d1edcc13d1	1441	LMIC.rps = setNocrc(LMIC.rps,1);
mluis	0:62d1edcc13d1	1442	LMIC.dataLen = 0;
mluis	0:62d1edcc13d1	1443	LMIC.osjob.func = func;
mluis	0:62d1edcc13d1	1444	os_radio(RADIO_RX);
mluis	0:62d1edcc13d1	1445	}
mluis	0:62d1edcc13d1	1446
mluis	0:62d1edcc13d1	1447
mluis	0:62d1edcc13d1	1448	// Called by HAL once TX complete and delivers exact end of TX time stamp in LMIC.rxtime
mluis	0:62d1edcc13d1	1449	static void txDone (ostime_t delay, osjobcb_t func) {
mluis	0:62d1edcc13d1	1450	if( (LMIC.opmode & (OP_TRACK\|OP_PINGABLE\|OP_PINGINI)) == (OP_TRACK\|OP_PINGABLE) ) {
mluis	1:d3b7bde3995c	1451	rxschedInit(&LMIC.ping); // note: reuses LMIC.frame buffer!
mluis	1:d3b7bde3995c	1452	LMIC.opmode \|= OP_PINGINI;
mluis	0:62d1edcc13d1	1453	}
mluis	0:62d1edcc13d1	1454	// Change RX frequency / rps (US only) before we increment txChnl
mluis	0:62d1edcc13d1	1455	setRx1Params();
mluis	0:62d1edcc13d1	1456	// LMIC.rxsyms carries the TX datarate (can be != LMIC.datarate [confirm retries etc.])
mluis	0:62d1edcc13d1	1457	// Setup receive - LMIC.rxtime is preloaded with 1.5 symbols offset to tune
mluis	0:62d1edcc13d1	1458	// into the middle of the 8 symbols preamble.
mluis	1:d3b7bde3995c	1459	#if defined(CFG_eu868)
mluis	0:62d1edcc13d1	1460	if( /* TX datarate */LMIC.rxsyms == DR_FSK ) {
mluis	1:d3b7bde3995c	1461	LMIC.rxtime = LMIC.txend + delay - PRERX_FSK*us2osticksRound(160);
mluis	1:d3b7bde3995c	1462	LMIC.rxsyms = RXLEN_FSK;
mluis	0:62d1edcc13d1	1463	}
mluis	0:62d1edcc13d1	1464	else
mluis	0:62d1edcc13d1	1465	#endif
mluis	0:62d1edcc13d1	1466	{
mluis	1:d3b7bde3995c	1467	LMIC.rxtime = LMIC.txend + delay + (PAMBL_SYMS-MINRX_SYMS)*dr2hsym(LMIC.dndr);
mluis	1:d3b7bde3995c	1468	LMIC.rxsyms = MINRX_SYMS;
mluis	0:62d1edcc13d1	1469	}
mluis	0:62d1edcc13d1	1470	os_setTimedCallback(&LMIC.osjob, LMIC.rxtime - RX_RAMPUP, func);
mluis	0:62d1edcc13d1	1471	}
mluis	0:62d1edcc13d1	1472
mluis	0:62d1edcc13d1	1473
mluis	0:62d1edcc13d1	1474	// ======================================== Join frames
mluis	0:62d1edcc13d1	1475
mluis	0:62d1edcc13d1	1476
mluis	0:62d1edcc13d1	1477	static void onJoinFailed (xref2osjob_t osjob) {
mluis	0:62d1edcc13d1	1478	// Notify app - must call LMIC_reset() to stop joining
mluis	0:62d1edcc13d1	1479	// otherwise join procedure continues.
mluis	0:62d1edcc13d1	1480	reportEvent(EV_JOIN_FAILED);
mluis	0:62d1edcc13d1	1481	}
mluis	0:62d1edcc13d1	1482
mluis	0:62d1edcc13d1	1483
mluis	0:62d1edcc13d1	1484	static bit_t processJoinAccept (void) {
mluis	0:62d1edcc13d1	1485	ASSERT(LMIC.txrxFlags != TXRX_DNW1 \|\| LMIC.dataLen != 0);
mluis	0:62d1edcc13d1	1486	ASSERT((LMIC.opmode & OP_TXRXPEND)!=0);
mluis	0:62d1edcc13d1	1487
mluis	0:62d1edcc13d1	1488	if( LMIC.dataLen == 0 ) {
mluis	0:62d1edcc13d1	1489	nojoinframe:
dudmuck	2:974cafbfb159	1490	/* keep retrying -- if( (LMIC.opmode & OP_JOINING) == 0 ) {
mluis	1:d3b7bde3995c	1491	ASSERT((LMIC.opmode & OP_REJOIN) != 0);
mluis	1:d3b7bde3995c	1492	// REJOIN attempt for roaming
mluis	1:d3b7bde3995c	1493	LMIC.opmode &= ~(OP_REJOIN\|OP_TXRXPEND);
mluis	1:d3b7bde3995c	1494	if( LMIC.rejoinCnt < 10 )
mluis	1:d3b7bde3995c	1495	LMIC.rejoinCnt++;
mluis	1:d3b7bde3995c	1496	reportEvent(EV_REJOIN_FAILED);
mluis	1:d3b7bde3995c	1497	return 1;
dudmuck	2:974cafbfb159	1498	}*/
mluis	1:d3b7bde3995c	1499	LMIC.opmode &= ~OP_TXRXPEND;
mluis	1:d3b7bde3995c	1500	ostime_t delay = nextJoinState();
mluis	1:d3b7bde3995c	1501	EV(devCond, DEBUG, (e_.reason = EV::devCond_t::NO_JACC,
mluis	1:d3b7bde3995c	1502	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1503	e_.info = LMIC.datarate\|DR_PAGE,
mluis	1:d3b7bde3995c	1504	e_.info2 = osticks2ms(delay)));
mluis	1:d3b7bde3995c	1505	// Build next JOIN REQUEST with next engineUpdate call
mluis	1:d3b7bde3995c	1506	// Optionally, report join failed.
mluis	1:d3b7bde3995c	1507	// Both after a random/chosen amount of ticks.
mluis	1:d3b7bde3995c	1508	os_setTimedCallback(&LMIC.osjob, os_getTime()+delay,
mluis	1:d3b7bde3995c	1509	(delay&1) != 0
mluis	1:d3b7bde3995c	1510	? FUNC_ADDR(onJoinFailed) // one JOIN iteration done and failed
mluis	1:d3b7bde3995c	1511	: FUNC_ADDR(runEngineUpdate)); // next step to be delayed
mluis	0:62d1edcc13d1	1512	return 1;
mluis	0:62d1edcc13d1	1513	}
mluis	0:62d1edcc13d1	1514	u1_t hdr = LMIC.frame[0];
mluis	0:62d1edcc13d1	1515	u1_t dlen = LMIC.dataLen;
mluis	0:62d1edcc13d1	1516	u4_t mic = os_rlsbf4(&LMIC.frame[dlen-4]); // safe before modified by encrypt!
mluis	0:62d1edcc13d1	1517	if( (dlen != LEN_JA && dlen != LEN_JAEXT)
mluis	1:d3b7bde3995c	1518	\|\| (hdr & (HDR_FTYPE\|HDR_MAJOR)) != (HDR_FTYPE_JACC\|HDR_MAJOR_V1) ) {
mluis	1:d3b7bde3995c	1519	EV(specCond, ERR, (e_.reason = EV::specCond_t::UNEXPECTED_FRAME,
mluis	1:d3b7bde3995c	1520	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1521	e_.info = dlen < 4 ? 0 : mic,
mluis	1:d3b7bde3995c	1522	e_.info2 = hdr + (dlen<<8)));
mluis	0:62d1edcc13d1	1523	badframe:
mluis	1:d3b7bde3995c	1524	if( (LMIC.txrxFlags & TXRX_DNW1) != 0 )
mluis	1:d3b7bde3995c	1525	return 0;
mluis	1:d3b7bde3995c	1526	goto nojoinframe;
mluis	0:62d1edcc13d1	1527	}
mluis	0:62d1edcc13d1	1528	aes_encrypt(LMIC.frame+1, dlen-1);
mluis	0:62d1edcc13d1	1529	if( !aes_verifyMic0(LMIC.frame, dlen-4) ) {
mluis	1:d3b7bde3995c	1530	EV(specCond, ERR, (e_.reason = EV::specCond_t::JOIN_BAD_MIC,
mluis	1:d3b7bde3995c	1531	e_.info = mic));
mluis	1:d3b7bde3995c	1532	goto badframe;
mluis	0:62d1edcc13d1	1533	}
mluis	0:62d1edcc13d1	1534
mluis	0:62d1edcc13d1	1535	u4_t addr = os_rlsbf4(LMIC.frame+OFF_JA_DEVADDR);
mluis	0:62d1edcc13d1	1536	LMIC.devaddr = addr;
mluis	1:d3b7bde3995c	1537	LMIC.netid = os_rlsbf4(&LMIC.frame[OFF_JA_NETID]) & 0xFFFFFF;
mluis	0:62d1edcc13d1	1538
mluis	1:d3b7bde3995c	1539	#if defined(CFG_eu868)
mluis	0:62d1edcc13d1	1540	initDefaultChannels(0);
mluis	0:62d1edcc13d1	1541	#endif
mluis	0:62d1edcc13d1	1542	if( dlen > LEN_JA ) {
mluis	1:d3b7bde3995c	1543	dlen = OFF_CFLIST;
mluis	1:d3b7bde3995c	1544	#if defined(CFG_eu868)
mluis	1:d3b7bde3995c	1545	u1_t chidx=3;
mluis	1:d3b7bde3995c	1546	#elif defined(CFG_us915)
mluis	1:d3b7bde3995c	1547	u1_t chidx=72;
mluis	0:62d1edcc13d1	1548	#endif
mluis	1:d3b7bde3995c	1549	for( ; chidx<8; chidx++, dlen+=3 )
mluis	3:519c71d29a06	1550	LMIC_setupChannel(chidx, convFreq(&LMIC.frame[dlen]), 0, -1);
mluis	0:62d1edcc13d1	1551	}
mluis	0:62d1edcc13d1	1552
mluis	0:62d1edcc13d1	1553	// already incremented when JOIN REQ got sent off
mluis	0:62d1edcc13d1	1554	aes_sessKeys(LMIC.devNonce-1, &LMIC.frame[OFF_JA_ARTNONCE], LMIC.nwkKey, LMIC.artKey);
mluis	1:d3b7bde3995c	1555	DO_DEVDB(LMIC.netid, netid);
mluis	1:d3b7bde3995c	1556	DO_DEVDB(LMIC.devaddr, devaddr);
mluis	1:d3b7bde3995c	1557	DO_DEVDB(LMIC.nwkKey, nwkkey);
mluis	1:d3b7bde3995c	1558	DO_DEVDB(LMIC.artKey, artkey);
mluis	0:62d1edcc13d1	1559
mluis	0:62d1edcc13d1	1560	EV(joininfo, INFO, (e_.arteui = MAIN::CDEV->getArtEui(),
mluis	1:d3b7bde3995c	1561	e_.deveui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1562	e_.devaddr = LMIC.devaddr,
mluis	1:d3b7bde3995c	1563	e_.oldaddr = oldaddr,
mluis	1:d3b7bde3995c	1564	e_.nonce = LMIC.devNonce-1,
mluis	1:d3b7bde3995c	1565	e_.mic = mic,
mluis	1:d3b7bde3995c	1566	e_.reason = ((LMIC.opmode & OP_REJOIN) != 0
mluis	1:d3b7bde3995c	1567	? EV::joininfo_t::REJOIN_ACCEPT
mluis	1:d3b7bde3995c	1568	: EV::joininfo_t::ACCEPT)));
mluis	0:62d1edcc13d1	1569
mluis	0:62d1edcc13d1	1570	ASSERT((LMIC.opmode & (OP_JOINING\|OP_REJOIN))!=0);
mluis	0:62d1edcc13d1	1571	if( (LMIC.opmode & OP_REJOIN) != 0 ) {
mluis	1:d3b7bde3995c	1572	// Lower DR every try below current UP DR
mluis	1:d3b7bde3995c	1573	LMIC.datarate = lowerDR(LMIC.datarate, LMIC.rejoinCnt);
mluis	0:62d1edcc13d1	1574	}
mluis	0:62d1edcc13d1	1575	LMIC.opmode &= ~(OP_JOINING\|OP_TRACK\|OP_REJOIN\|OP_TXRXPEND\|OP_PINGINI) \| OP_NEXTCHNL;
mluis	0:62d1edcc13d1	1576	stateJustJoined();
mluis	0:62d1edcc13d1	1577	reportEvent(EV_JOINED);
mluis	0:62d1edcc13d1	1578	return 1;
mluis	0:62d1edcc13d1	1579	}
mluis	0:62d1edcc13d1	1580
mluis	1:d3b7bde3995c	1581
mluis	1:d3b7bde3995c	1582	static void processRx2Jacc (xref2osjob_t osjob) {
mluis	0:62d1edcc13d1	1583	if( LMIC.dataLen == 0 )
mluis	1:d3b7bde3995c	1584	LMIC.txrxFlags = 0; // nothing in 1st/2nd DN slot
mluis	0:62d1edcc13d1	1585	processJoinAccept();
mluis	0:62d1edcc13d1	1586	}
mluis	0:62d1edcc13d1	1587
mluis	1:d3b7bde3995c	1588
mluis	1:d3b7bde3995c	1589	static void setupRx2Jacc (xref2osjob_t osjob) {
mluis	1:d3b7bde3995c	1590	LMIC.osjob.func = FUNC_ADDR(processRx2Jacc);
mluis	1:d3b7bde3995c	1591	setupRx2();
mluis	1:d3b7bde3995c	1592	}
mluis	1:d3b7bde3995c	1593
mluis	1:d3b7bde3995c	1594
mluis	1:d3b7bde3995c	1595	static void processRx1Jacc (xref2osjob_t osjob) {
mluis	1:d3b7bde3995c	1596	if( LMIC.dataLen == 0 \|\| !processJoinAccept() )
mluis	1:d3b7bde3995c	1597	schedRx2(DELAY_JACC2_osticks, FUNC_ADDR(setupRx2Jacc));
mluis	1:d3b7bde3995c	1598	}
mluis	1:d3b7bde3995c	1599
mluis	1:d3b7bde3995c	1600
mluis	0:62d1edcc13d1	1601	static void setupRx1Jacc (xref2osjob_t osjob) {
mluis	0:62d1edcc13d1	1602	setupRx1(FUNC_ADDR(processRx1Jacc));
mluis	0:62d1edcc13d1	1603	}
mluis	0:62d1edcc13d1	1604
mluis	0:62d1edcc13d1	1605
mluis	0:62d1edcc13d1	1606	static void jreqDone (xref2osjob_t osjob) {
mluis	0:62d1edcc13d1	1607	txDone(DELAY_JACC1_osticks, FUNC_ADDR(setupRx1Jacc));
mluis	0:62d1edcc13d1	1608	}
mluis	0:62d1edcc13d1	1609
mluis	0:62d1edcc13d1	1610	// ======================================== Data frames
mluis	0:62d1edcc13d1	1611
mluis	0:62d1edcc13d1	1612	// Fwd decl.
mluis	0:62d1edcc13d1	1613	static bit_t processDnData(void);
mluis	0:62d1edcc13d1	1614
mluis	1:d3b7bde3995c	1615	static void processRx2DnDataDelay (xref2osjob_t osjob) {
mluis	1:d3b7bde3995c	1616	processDnData();
mluis	1:d3b7bde3995c	1617	}
mluis	1:d3b7bde3995c	1618
mluis	0:62d1edcc13d1	1619	static void processRx2DnData (xref2osjob_t osjob) {
mluis	1:d3b7bde3995c	1620	if( LMIC.dataLen == 0 ) {
mluis	1:d3b7bde3995c	1621	LMIC.txrxFlags = 0; // nothing in 1st/2nd DN slot
mluis	1:d3b7bde3995c	1622	// Delay callback processing to avoid up TX while gateway is txing our missed frame!
mluis	1:d3b7bde3995c	1623	// Since DNW2 uses SF12 by default we wait 3 secs.
mluis	1:d3b7bde3995c	1624	os_setTimedCallback(&LMIC.osjob,
mluis	1:d3b7bde3995c	1625	(os_getTime() + DNW2_SAFETY_ZONE + rndDelay(2)),
mluis	1:d3b7bde3995c	1626	processRx2DnDataDelay);
mluis	1:d3b7bde3995c	1627	return;
mluis	1:d3b7bde3995c	1628	}
mluis	0:62d1edcc13d1	1629	processDnData();
mluis	0:62d1edcc13d1	1630	}
mluis	0:62d1edcc13d1	1631
mluis	0:62d1edcc13d1	1632
mluis	0:62d1edcc13d1	1633	static void setupRx2DnData (xref2osjob_t osjob) {
mluis	0:62d1edcc13d1	1634	LMIC.osjob.func = FUNC_ADDR(processRx2DnData);
mluis	0:62d1edcc13d1	1635	setupRx2();
mluis	0:62d1edcc13d1	1636	}
mluis	0:62d1edcc13d1	1637
mluis	0:62d1edcc13d1	1638
mluis	0:62d1edcc13d1	1639	static void processRx1DnData (xref2osjob_t osjob) {
mluis	0:62d1edcc13d1	1640	if( LMIC.dataLen == 0 \|\| !processDnData() )
mluis	1:d3b7bde3995c	1641	schedRx2(DELAY_DNW2_osticks, FUNC_ADDR(setupRx2DnData));
mluis	0:62d1edcc13d1	1642	}
mluis	0:62d1edcc13d1	1643
mluis	0:62d1edcc13d1	1644
mluis	0:62d1edcc13d1	1645	static void setupRx1DnData (xref2osjob_t osjob) {
mluis	0:62d1edcc13d1	1646	setupRx1(FUNC_ADDR(processRx1DnData));
mluis	0:62d1edcc13d1	1647	}
mluis	0:62d1edcc13d1	1648
mluis	0:62d1edcc13d1	1649
mluis	0:62d1edcc13d1	1650	static void updataDone (xref2osjob_t osjob) {
mluis	0:62d1edcc13d1	1651	txDone(DELAY_DNW1_osticks, FUNC_ADDR(setupRx1DnData));
mluis	0:62d1edcc13d1	1652	}
mluis	0:62d1edcc13d1	1653
mluis	0:62d1edcc13d1	1654	// ========================================
mluis	0:62d1edcc13d1	1655
mluis	0:62d1edcc13d1	1656
mluis	0:62d1edcc13d1	1657	static void buildDataFrame (void) {
mluis	0:62d1edcc13d1	1658	bit_t txdata = ((LMIC.opmode & (OP_TXDATA\|OP_POLL)) != OP_POLL);
mluis	0:62d1edcc13d1	1659	u1_t dlen = txdata ? LMIC.pendTxLen : 0;
mluis	0:62d1edcc13d1	1660
mluis	0:62d1edcc13d1	1661	// Piggyback MAC options
mluis	0:62d1edcc13d1	1662	// Prioritize by importance
mluis	0:62d1edcc13d1	1663	int end = OFF_DAT_OPTS;
mluis	0:62d1edcc13d1	1664	if( (LMIC.opmode & (OP_TRACK\|OP_PINGABLE)) == (OP_TRACK\|OP_PINGABLE) ) {
mluis	1:d3b7bde3995c	1665	// Indicate pingability in every UP frame
mluis	1:d3b7bde3995c	1666	LMIC.frame[end] = MCMD_PING_IND;
mluis	1:d3b7bde3995c	1667	LMIC.frame[end+1] = LMIC.ping.dr \| (LMIC.ping.intvExp<<4);
mluis	1:d3b7bde3995c	1668	end += 2;
mluis	0:62d1edcc13d1	1669	}
mluis	0:62d1edcc13d1	1670	if( LMIC.dutyCapAns ) {
mluis	1:d3b7bde3995c	1671	LMIC.frame[end] = MCMD_DCAP_ANS;
mluis	1:d3b7bde3995c	1672	end += 1;
mluis	1:d3b7bde3995c	1673	LMIC.dutyCapAns = 0;
mluis	0:62d1edcc13d1	1674	}
mluis	0:62d1edcc13d1	1675	if( LMIC.dn2Ans ) {
mluis	1:d3b7bde3995c	1676	LMIC.frame[end+0] = MCMD_DN2P_ANS;
mluis	1:d3b7bde3995c	1677	LMIC.frame[end+1] = LMIC.dn2Ans & ~MCMD_DN2P_ANS_RFU;
mluis	1:d3b7bde3995c	1678	end += 2;
mluis	1:d3b7bde3995c	1679	LMIC.dn2Ans = 0;
mluis	0:62d1edcc13d1	1680	}
mluis	0:62d1edcc13d1	1681	if( LMIC.devsAns ) { // answer to device status
mluis	1:d3b7bde3995c	1682	LMIC.frame[end+0] = MCMD_DEVS_ANS;
mluis	1:d3b7bde3995c	1683	LMIC.frame[end+1] = LMIC.margin;
mluis	1:d3b7bde3995c	1684	LMIC.frame[end+2] = os_getBattLevel();
mluis	1:d3b7bde3995c	1685	end += 3;
mluis	1:d3b7bde3995c	1686	LMIC.devsAns = 0;
mluis	0:62d1edcc13d1	1687	}
mluis	0:62d1edcc13d1	1688	if( LMIC.ladrAns ) { // answer to ADR change
mluis	1:d3b7bde3995c	1689	LMIC.frame[end+0] = MCMD_LADR_ANS;
mluis	1:d3b7bde3995c	1690	LMIC.frame[end+1] = LMIC.ladrAns & ~MCMD_LADR_ANS_RFU;
mluis	1:d3b7bde3995c	1691	end += 2;
mluis	1:d3b7bde3995c	1692	LMIC.ladrAns = 0;
mluis	0:62d1edcc13d1	1693	}
mluis	0:62d1edcc13d1	1694	if( LMIC.bcninfoTries > 0 ) {
mluis	1:d3b7bde3995c	1695	LMIC.frame[end] = MCMD_BCNI_REQ;
mluis	1:d3b7bde3995c	1696	end += 1;
mluis	0:62d1edcc13d1	1697	}
mluis	0:62d1edcc13d1	1698	if( LMIC.adrChanged ) {
mluis	1:d3b7bde3995c	1699	if( LMIC.adrAckReq < 0 )
mluis	1:d3b7bde3995c	1700	LMIC.adrAckReq = 0;
mluis	1:d3b7bde3995c	1701	LMIC.adrChanged = 0;
mluis	0:62d1edcc13d1	1702	}
mluis	0:62d1edcc13d1	1703	if( LMIC.pingSetAns != 0 ) {
mluis	1:d3b7bde3995c	1704	LMIC.frame[end+0] = MCMD_PING_ANS;
mluis	1:d3b7bde3995c	1705	LMIC.frame[end+1] = LMIC.pingSetAns & ~MCMD_PING_ANS_RFU;
mluis	1:d3b7bde3995c	1706	end += 2;
mluis	1:d3b7bde3995c	1707	LMIC.pingSetAns = 0;
mluis	0:62d1edcc13d1	1708	}
mluis	0:62d1edcc13d1	1709	if( LMIC.snchAns ) {
mluis	1:d3b7bde3995c	1710	LMIC.frame[end+0] = MCMD_SNCH_ANS;
mluis	1:d3b7bde3995c	1711	LMIC.frame[end+1] = LMIC.snchAns & ~MCMD_SNCH_ANS_RFU;
mluis	1:d3b7bde3995c	1712	end += 2;
mluis	1:d3b7bde3995c	1713	LMIC.snchAns = 0;
mluis	0:62d1edcc13d1	1714	}
mluis	0:62d1edcc13d1	1715	ASSERT(end <= OFF_DAT_OPTS+16);
mluis	0:62d1edcc13d1	1716
mluis	0:62d1edcc13d1	1717	u1_t flen = end + (txdata ? 5+dlen : 4);
mluis	0:62d1edcc13d1	1718	if( flen > MAX_LEN_FRAME ) {
mluis	1:d3b7bde3995c	1719	// Options and payload too big - delay payload
mluis	1:d3b7bde3995c	1720	txdata = 0;
mluis	1:d3b7bde3995c	1721	flen = end+4;
mluis	0:62d1edcc13d1	1722	}
mluis	0:62d1edcc13d1	1723	LMIC.frame[OFF_DAT_HDR] = HDR_FTYPE_DAUP \| HDR_MAJOR_V1;
mluis	0:62d1edcc13d1	1724	LMIC.frame[OFF_DAT_FCT] = (LMIC.dnConf \| LMIC.adrEnabled
mluis	1:d3b7bde3995c	1725	\| (LMIC.adrAckReq >= 0 ? FCT_ADRARQ : 0)
mluis	1:d3b7bde3995c	1726	\| (end-OFF_DAT_OPTS));
mluis	0:62d1edcc13d1	1727	os_wlsbf4(LMIC.frame+OFF_DAT_ADDR, LMIC.devaddr);
mluis	0:62d1edcc13d1	1728
mluis	0:62d1edcc13d1	1729	if( LMIC.txCnt == 0 ) {
mluis	1:d3b7bde3995c	1730	LMIC.seqnoUp += 1;
mluis	1:d3b7bde3995c	1731	DO_DEVDB(LMIC.seqnoUp,seqnoUp);
mluis	0:62d1edcc13d1	1732	} else {
mluis	1:d3b7bde3995c	1733	EV(devCond, INFO, (e_.reason = EV::devCond_t::RE_TX,
mluis	1:d3b7bde3995c	1734	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1735	e_.info = LMIC.seqnoUp-1,
mluis	1:d3b7bde3995c	1736	e_.info2 = ((LMIC.txCnt+1) \|
mluis	1:d3b7bde3995c	1737	(DRADJUST[LMIC.txCnt+1] << 8) \|
mluis	1:d3b7bde3995c	1738	((LMIC.datarate\|DR_PAGE)<<16))));
mluis	0:62d1edcc13d1	1739	}
mluis	0:62d1edcc13d1	1740	os_wlsbf2(LMIC.frame+OFF_DAT_SEQNO, LMIC.seqnoUp-1);
mluis	0:62d1edcc13d1	1741
mluis	0:62d1edcc13d1	1742	// Clear pending DN confirmation
mluis	0:62d1edcc13d1	1743	LMIC.dnConf = 0;
mluis	0:62d1edcc13d1	1744
mluis	0:62d1edcc13d1	1745	if( txdata ) {
mluis	1:d3b7bde3995c	1746	if( LMIC.pendTxConf ) {
mluis	1:d3b7bde3995c	1747	// Confirmed only makes sense if we have a payload (or at least a port)
mluis	1:d3b7bde3995c	1748	LMIC.frame[OFF_DAT_HDR] = HDR_FTYPE_DCUP \| HDR_MAJOR_V1;
mluis	1:d3b7bde3995c	1749	if( LMIC.txCnt == 0 ) LMIC.txCnt = 1;
mluis	1:d3b7bde3995c	1750	}
mluis	1:d3b7bde3995c	1751	LMIC.frame[end] = LMIC.pendTxPort;
mluis	1:d3b7bde3995c	1752	os_copyMem(LMIC.frame+end+1, LMIC.pendTxData, dlen);
mluis	1:d3b7bde3995c	1753	aes_cipher(LMIC.pendTxPort==0 ? LMIC.nwkKey : LMIC.artKey,
mluis	1:d3b7bde3995c	1754	LMIC.devaddr, LMIC.seqnoUp-1,
mluis	1:d3b7bde3995c	1755	/up/0, LMIC.frame+end+1, dlen);
mluis	0:62d1edcc13d1	1756	}
mluis	0:62d1edcc13d1	1757	aes_appendMic(LMIC.nwkKey, LMIC.devaddr, LMIC.seqnoUp-1, /up/0, LMIC.frame, flen-4);
mluis	0:62d1edcc13d1	1758
mluis	0:62d1edcc13d1	1759	EV(dfinfo, DEBUG, (e_.deveui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1760	e_.devaddr = LMIC.devaddr,
mluis	1:d3b7bde3995c	1761	e_.seqno = LMIC.seqnoUp-1,
mluis	1:d3b7bde3995c	1762	e_.flags = (LMIC.pendTxPort < 0 ? EV::dfinfo_t::NOPORT : EV::dfinfo_t::NOP),
mluis	1:d3b7bde3995c	1763	e_.mic = Base::lsbf4(&LMIC.frame[flen-4]),
mluis	1:d3b7bde3995c	1764	e_.hdr = LMIC.frame[LORA::OFF_DAT_HDR],
mluis	1:d3b7bde3995c	1765	e_.fct = LMIC.frame[LORA::OFF_DAT_FCT],
mluis	1:d3b7bde3995c	1766	e_.port = LMIC.pendTxPort,
mluis	1:d3b7bde3995c	1767	e_.plen = txdata ? dlen : 0,
mluis	1:d3b7bde3995c	1768	e_.opts.length = end-LORA::OFF_DAT_OPTS,
mluis	1:d3b7bde3995c	1769	memcpy(&e_.opts[0], LMIC.frame+LORA::OFF_DAT_OPTS, end-LORA::OFF_DAT_OPTS)));
mluis	0:62d1edcc13d1	1770	LMIC.dataLen = flen;
mluis	0:62d1edcc13d1	1771	}
mluis	0:62d1edcc13d1	1772
mluis	0:62d1edcc13d1	1773
mluis	0:62d1edcc13d1	1774	// Callback from HAL during scan mode or when job timer expires.
mluis	0:62d1edcc13d1	1775	static void onBcnRx (xref2osjob_t job) {
mluis	0:62d1edcc13d1	1776	// If we arrive via job timer make sure to put radio to rest.
mluis	0:62d1edcc13d1	1777	os_radio(RADIO_RST);
mluis	0:62d1edcc13d1	1778	os_clearCallback(&LMIC.osjob);
mluis	0:62d1edcc13d1	1779	if( LMIC.dataLen == 0 ) {
mluis	1:d3b7bde3995c	1780	// Nothing received - timeout
mluis	1:d3b7bde3995c	1781	LMIC.opmode &= ~(OP_SCAN \| OP_TRACK);
mluis	1:d3b7bde3995c	1782	reportEvent(EV_SCAN_TIMEOUT);
mluis	1:d3b7bde3995c	1783	return;
mluis	0:62d1edcc13d1	1784	}
mluis	0:62d1edcc13d1	1785	if( decodeBeacon() <= 0 ) {
mluis	1:d3b7bde3995c	1786	// Something is wrong with the beacon - continue scan
mluis	1:d3b7bde3995c	1787	LMIC.dataLen = 0;
mluis	1:d3b7bde3995c	1788	os_radio(RADIO_RXON);
mluis	1:d3b7bde3995c	1789	os_setTimedCallback(&LMIC.osjob, LMIC.bcninfo.txtime, FUNC_ADDR(onBcnRx));
mluis	1:d3b7bde3995c	1790	return;
mluis	0:62d1edcc13d1	1791	}
mluis	0:62d1edcc13d1	1792	// Found our 1st beacon
mluis	0:62d1edcc13d1	1793	// We don't have a previous beacon to calc some drift - assume
mluis	0:62d1edcc13d1	1794	// an max error of 13ms = 128sec*100ppm which is roughly +/-100ppm
mluis	0:62d1edcc13d1	1795	calcBcnRxWindowFromMillis(13,1);
mluis	0:62d1edcc13d1	1796	LMIC.opmode &= ~OP_SCAN; // turn SCAN off
mluis	0:62d1edcc13d1	1797	LMIC.opmode \|= OP_TRACK; // auto enable tracking
mluis	0:62d1edcc13d1	1798	reportEvent(EV_BEACON_FOUND); // can be disabled in callback
mluis	0:62d1edcc13d1	1799	}
mluis	0:62d1edcc13d1	1800
mluis	0:62d1edcc13d1	1801
mluis	0:62d1edcc13d1	1802	// Enable receiver to listen to incoming beacons
mluis	0:62d1edcc13d1	1803	// netid defines when scan stops (any or specific beacon)
mluis	0:62d1edcc13d1	1804	// This mode ends with events: EV_SCAN_TIMEOUT/EV_SCAN_BEACON
mluis	0:62d1edcc13d1	1805	// Implicitely cancels any pending TX/RX transaction.
mluis	0:62d1edcc13d1	1806	// Also cancels an onpoing joining procedure.
mluis	0:62d1edcc13d1	1807	static void startScan (void) {
mluis	0:62d1edcc13d1	1808	ASSERT(LMIC.devaddr!=0 && (LMIC.opmode & OP_JOINING)==0);
mluis	0:62d1edcc13d1	1809	if( (LMIC.opmode & OP_SHUTDOWN) != 0 )
mluis	1:d3b7bde3995c	1810	return;
mluis	0:62d1edcc13d1	1811	// Cancel onging TX/RX transaction
mluis	0:62d1edcc13d1	1812	LMIC.txCnt = LMIC.dnConf = LMIC.bcninfo.flags = 0;
mluis	0:62d1edcc13d1	1813	LMIC.opmode = (LMIC.opmode \| OP_SCAN) & ~(OP_TXRXPEND);
mluis	0:62d1edcc13d1	1814	setBcnRxParams();
mluis	0:62d1edcc13d1	1815	LMIC.rxtime = LMIC.bcninfo.txtime = os_getTime() + sec2osticks(BCN_INTV_sec+1);
mluis	0:62d1edcc13d1	1816	os_setTimedCallback(&LMIC.osjob, LMIC.rxtime, FUNC_ADDR(onBcnRx));
mluis	0:62d1edcc13d1	1817	os_radio(RADIO_RXON);
mluis	0:62d1edcc13d1	1818	}
mluis	0:62d1edcc13d1	1819
mluis	0:62d1edcc13d1	1820
mluis	0:62d1edcc13d1	1821	bit_t LMIC_enableTracking (u1_t tryBcnInfo) {
mluis	0:62d1edcc13d1	1822	if( (LMIC.opmode & (OP_SCAN\|OP_TRACK\|OP_SHUTDOWN)) != 0 )
mluis	1:d3b7bde3995c	1823	return 0; // already in progress or failed to enable
mluis	0:62d1edcc13d1	1824	// If BCN info requested from NWK then app has to take are
mluis	0:62d1edcc13d1	1825	// of sending data up so that MCMD_BCNI_REQ can be attached.
mluis	0:62d1edcc13d1	1826	if( (LMIC.bcninfoTries = tryBcnInfo) == 0 )
mluis	1:d3b7bde3995c	1827	startScan();
mluis	0:62d1edcc13d1	1828	return 1; // enabled
mluis	0:62d1edcc13d1	1829	}
mluis	0:62d1edcc13d1	1830
mluis	0:62d1edcc13d1	1831
mluis	0:62d1edcc13d1	1832	void LMIC_disableTracking (void) {
mluis	0:62d1edcc13d1	1833	LMIC.opmode &= ~(OP_SCAN\|OP_TRACK);
mluis	0:62d1edcc13d1	1834	LMIC.bcninfoTries = 0;
mluis	0:62d1edcc13d1	1835	engineUpdate();
mluis	0:62d1edcc13d1	1836	}
mluis	0:62d1edcc13d1	1837
mluis	0:62d1edcc13d1	1838
mluis	0:62d1edcc13d1	1839	// ================================================================================
mluis	0:62d1edcc13d1	1840	//
mluis	0:62d1edcc13d1	1841	// Join stuff
mluis	0:62d1edcc13d1	1842	//
mluis	0:62d1edcc13d1	1843	// ================================================================================
mluis	0:62d1edcc13d1	1844
mluis	0:62d1edcc13d1	1845	static void buildJoinRequest (u1_t ftype) {
mluis	0:62d1edcc13d1	1846	// Do not use pendTxData since we might have a pending
mluis	0:62d1edcc13d1	1847	// user level frame in there. Use RX holding area instead.
mluis	0:62d1edcc13d1	1848	xref2u1_t d = LMIC.frame;
mluis	0:62d1edcc13d1	1849	d[OFF_JR_HDR] = ftype;
mluis	0:62d1edcc13d1	1850	os_getArtEui(d + OFF_JR_ARTEUI);
mluis	0:62d1edcc13d1	1851	os_getDevEui(d + OFF_JR_DEVEUI);
mluis	0:62d1edcc13d1	1852	os_wlsbf2(d + OFF_JR_DEVNONCE, LMIC.devNonce);
mluis	0:62d1edcc13d1	1853	aes_appendMic0(d, OFF_JR_MIC);
mluis	0:62d1edcc13d1	1854
mluis	0:62d1edcc13d1	1855	EV(joininfo,INFO,(e_.deveui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1856	e_.arteui = MAIN::CDEV->getArtEui(),
mluis	1:d3b7bde3995c	1857	e_.nonce = LMIC.devNonce,
mluis	1:d3b7bde3995c	1858	e_.oldaddr = LMIC.devaddr,
mluis	1:d3b7bde3995c	1859	e_.mic = Base::lsbf4(&d[LORA::OFF_JR_MIC]),
mluis	1:d3b7bde3995c	1860	e_.reason = ((LMIC.opmode & OP_REJOIN) != 0
mluis	1:d3b7bde3995c	1861	? EV::joininfo_t::REJOIN_REQUEST
mluis	1:d3b7bde3995c	1862	: EV::joininfo_t::REQUEST)));
mluis	0:62d1edcc13d1	1863	LMIC.dataLen = LEN_JR;
mluis	0:62d1edcc13d1	1864	LMIC.devNonce++;
mluis	1:d3b7bde3995c	1865	DO_DEVDB(LMIC.devNonce,devNonce);
mluis	0:62d1edcc13d1	1866	}
mluis	0:62d1edcc13d1	1867
mluis	0:62d1edcc13d1	1868	static void startJoining (xref2osjob_t osjob) {
mluis	0:62d1edcc13d1	1869	reportEvent(EV_JOINING);
mluis	0:62d1edcc13d1	1870	}
mluis	0:62d1edcc13d1	1871
mluis	0:62d1edcc13d1	1872	// Start join procedure if not already joined.
mluis	0:62d1edcc13d1	1873	bit_t LMIC_startJoining (void) {
mluis	0:62d1edcc13d1	1874	if( LMIC.devaddr == 0 ) {
mluis	1:d3b7bde3995c	1875	// There should be no TX/RX going on
mluis	1:d3b7bde3995c	1876	ASSERT((LMIC.opmode & (OP_POLL\|OP_TXRXPEND)) == 0);
mluis	1:d3b7bde3995c	1877	// Lift any previous duty limitation
mluis	1:d3b7bde3995c	1878	LMIC.globalDutyRate = 0;
mluis	1:d3b7bde3995c	1879	// Cancel scanning
mluis	1:d3b7bde3995c	1880	LMIC.opmode &= ~(OP_SCAN\|OP_REJOIN\|OP_LINKDEAD\|OP_NEXTCHNL);
mluis	1:d3b7bde3995c	1881	// Setup state
mluis	1:d3b7bde3995c	1882	LMIC.rejoinCnt = LMIC.txCnt = LMIC.pendTxConf = 0;
mluis	1:d3b7bde3995c	1883	initJoinLoop();
mluis	1:d3b7bde3995c	1884	LMIC.opmode \|= OP_JOINING;
mluis	1:d3b7bde3995c	1885	// reportEvent will call engineUpdate which then starts sending JOIN REQUESTS
mluis	1:d3b7bde3995c	1886	os_setCallback(&LMIC.osjob, FUNC_ADDR(startJoining));
mluis	1:d3b7bde3995c	1887	return 1;
mluis	0:62d1edcc13d1	1888	}
mluis	1:d3b7bde3995c	1889	return 0; // already joined
mluis	0:62d1edcc13d1	1890	}
mluis	0:62d1edcc13d1	1891
mluis	0:62d1edcc13d1	1892
mluis	0:62d1edcc13d1	1893	// ================================================================================
mluis	0:62d1edcc13d1	1894	//
mluis	0:62d1edcc13d1	1895	//
mluis	0:62d1edcc13d1	1896	//
mluis	0:62d1edcc13d1	1897	// ================================================================================
mluis	0:62d1edcc13d1	1898
mluis	0:62d1edcc13d1	1899	static void processPingRx (xref2osjob_t osjob) {
mluis	0:62d1edcc13d1	1900	if( LMIC.dataLen != 0 ) {
mluis	1:d3b7bde3995c	1901	LMIC.txrxFlags = TXRX_PING;
mluis	1:d3b7bde3995c	1902	if( decodeFrame() ) {
mluis	1:d3b7bde3995c	1903	reportEvent(EV_RXCOMPLETE);
mluis	1:d3b7bde3995c	1904	return;
mluis	1:d3b7bde3995c	1905	}
mluis	0:62d1edcc13d1	1906	}
mluis	0:62d1edcc13d1	1907	// Pick next ping slot
mluis	0:62d1edcc13d1	1908	engineUpdate();
mluis	0:62d1edcc13d1	1909	}
mluis	0:62d1edcc13d1	1910
mluis	0:62d1edcc13d1	1911
mluis	0:62d1edcc13d1	1912	static bit_t processDnData (void) {
mluis	0:62d1edcc13d1	1913	ASSERT((LMIC.opmode & OP_TXRXPEND)!=0);
mluis	0:62d1edcc13d1	1914
mluis	0:62d1edcc13d1	1915	if( LMIC.dataLen == 0 ) {
mluis	0:62d1edcc13d1	1916	norx:
mluis	1:d3b7bde3995c	1917	if( LMIC.txCnt != 0 ) {
mluis	1:d3b7bde3995c	1918	if( LMIC.txCnt < TXCONF_ATTEMPTS ) {
mluis	1:d3b7bde3995c	1919	LMIC.txCnt += 1;
mluis	1:d3b7bde3995c	1920	setDrTxpow(DRCHG_NOACK, lowerDR(LMIC.datarate, DRADJUST[LMIC.txCnt]), KEEP_TXPOW);
mluis	1:d3b7bde3995c	1921	// Schedule another retransmission
mluis	1:d3b7bde3995c	1922	txDelay(LMIC.rxtime, RETRY_PERIOD_secs);
mluis	1:d3b7bde3995c	1923	LMIC.opmode &= ~OP_TXRXPEND;
mluis	1:d3b7bde3995c	1924	engineUpdate();
mluis	1:d3b7bde3995c	1925	return 1;
mluis	1:d3b7bde3995c	1926	}
mluis	1:d3b7bde3995c	1927	LMIC.txrxFlags = TXRX_NACK \| TXRX_NOPORT;
mluis	1:d3b7bde3995c	1928	} else {
mluis	1:d3b7bde3995c	1929	// Nothing received - implies no port
mluis	1:d3b7bde3995c	1930	LMIC.txrxFlags = TXRX_NOPORT;
mluis	0:62d1edcc13d1	1931	}
mluis	1:d3b7bde3995c	1932	if( LMIC.adrAckReq != LINK_CHECK_OFF )
mluis	1:d3b7bde3995c	1933	LMIC.adrAckReq += 1;
mluis	1:d3b7bde3995c	1934	LMIC.dataBeg = LMIC.dataLen = 0;
mluis	0:62d1edcc13d1	1935	txcomplete:
mluis	1:d3b7bde3995c	1936	LMIC.opmode &= ~(OP_TXDATA\|OP_TXRXPEND);
mluis	1:d3b7bde3995c	1937	if( (LMIC.txrxFlags & (TXRX_DNW1\|TXRX_DNW2\|TXRX_PING)) != 0 && (LMIC.opmode & OP_LINKDEAD) != 0 ) {
mluis	1:d3b7bde3995c	1938	LMIC.opmode &= ~OP_LINKDEAD;
mluis	1:d3b7bde3995c	1939	reportEvent(EV_LINK_ALIVE);
mluis	1:d3b7bde3995c	1940	}
mluis	1:d3b7bde3995c	1941	reportEvent(EV_TXCOMPLETE);
mluis	1:d3b7bde3995c	1942	// If we haven't heard from NWK in a while although we asked for a sign
mluis	1:d3b7bde3995c	1943	// assume link is dead - notify application and keep going
mluis	1:d3b7bde3995c	1944	if( LMIC.adrAckReq > LINK_CHECK_DEAD ) {
mluis	1:d3b7bde3995c	1945	// We haven't heard from NWK for some time although we
mluis	1:d3b7bde3995c	1946	// asked for a response for some time - assume we're disconnected. Lower DR one notch.
mluis	1:d3b7bde3995c	1947	EV(devCond, ERR, (e_.reason = EV::devCond_t::LINK_DEAD,
mluis	1:d3b7bde3995c	1948	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	1949	e_.info = LMIC.adrAckReq));
mluis	1:d3b7bde3995c	1950	setDrTxpow(DRCHG_NOADRACK, decDR((dr_t)LMIC.datarate), KEEP_TXPOW);
mluis	1:d3b7bde3995c	1951	LMIC.adrAckReq = LINK_CHECK_CONT;
mluis	0:62d1edcc13d1	1952	LMIC.opmode \|= OP_REJOIN\|OP_LINKDEAD;
mluis	1:d3b7bde3995c	1953	reportEvent(EV_LINK_DEAD);
mluis	0:62d1edcc13d1	1954	}
mluis	1:d3b7bde3995c	1955	// If this falls to zero the NWK did not answer our MCMD_BCNI_REQ commands - try full scan
mluis	1:d3b7bde3995c	1956	if( LMIC.bcninfoTries > 0 ) {
mluis	1:d3b7bde3995c	1957	if( (LMIC.opmode & OP_TRACK) != 0 ) {
mluis	1:d3b7bde3995c	1958	reportEvent(EV_BEACON_FOUND);
mluis	1:d3b7bde3995c	1959	LMIC.bcninfoTries = 0;
mluis	1:d3b7bde3995c	1960	}
mluis	1:d3b7bde3995c	1961	else if( --LMIC.bcninfoTries == 0 ) {
mluis	1:d3b7bde3995c	1962	startScan(); // NWK did not answer - try scan
mluis	1:d3b7bde3995c	1963	}
mluis	0:62d1edcc13d1	1964	}
mluis	1:d3b7bde3995c	1965	return 1;
mluis	0:62d1edcc13d1	1966	}
mluis	0:62d1edcc13d1	1967	if( !decodeFrame() ) {
mluis	1:d3b7bde3995c	1968	if( (LMIC.txrxFlags & TXRX_DNW1) != 0 )
mluis	1:d3b7bde3995c	1969	return 0;
mluis	1:d3b7bde3995c	1970	goto norx;
mluis	0:62d1edcc13d1	1971	}
mluis	0:62d1edcc13d1	1972	goto txcomplete;
mluis	0:62d1edcc13d1	1973	}
mluis	0:62d1edcc13d1	1974
mluis	0:62d1edcc13d1	1975
mluis	0:62d1edcc13d1	1976	static void processBeacon (xref2osjob_t osjob) {
mluis	0:62d1edcc13d1	1977	ostime_t lasttx = LMIC.bcninfo.txtime; // save here - decodeBeacon might overwrite
mluis	0:62d1edcc13d1	1978	u1_t flags = LMIC.bcninfo.flags;
mluis	0:62d1edcc13d1	1979	ev_t ev;
mluis	0:62d1edcc13d1	1980
mluis	0:62d1edcc13d1	1981	if( LMIC.dataLen != 0 && decodeBeacon() >= 1 ) {
mluis	1:d3b7bde3995c	1982	ev = EV_BEACON_TRACKED;
mluis	1:d3b7bde3995c	1983	if( (flags & (BCN_PARTIAL\|BCN_FULL)) == 0 ) {
mluis	1:d3b7bde3995c	1984	// We don't have a previous beacon to calc some drift - assume
mluis	1:d3b7bde3995c	1985	// an max error of 13ms = 128sec*100ppm which is roughly +/-100ppm
mluis	1:d3b7bde3995c	1986	calcBcnRxWindowFromMillis(13,0);
mluis	1:d3b7bde3995c	1987	goto rev;
mluis	1:d3b7bde3995c	1988	}
mluis	1:d3b7bde3995c	1989	// We have a previous BEACON to calculate some drift
mluis	1:d3b7bde3995c	1990	s2_t drift = BCN_INTV_osticks - (LMIC.bcninfo.txtime - lasttx);
mluis	1:d3b7bde3995c	1991	if( LMIC.missedBcns > 0 ) {
mluis	1:d3b7bde3995c	1992	drift = LMIC.drift + (drift - LMIC.drift) / (LMIC.missedBcns+1);
mluis	1:d3b7bde3995c	1993	}
mluis	1:d3b7bde3995c	1994	if( (LMIC.bcninfo.flags & BCN_NODRIFT) == 0 ) {
mluis	1:d3b7bde3995c	1995	s2_t diff = LMIC.drift - drift;
mluis	1:d3b7bde3995c	1996	if( diff < 0 ) diff = -diff;
mluis	1:d3b7bde3995c	1997	LMIC.lastDriftDiff = diff;
mluis	1:d3b7bde3995c	1998	if( LMIC.maxDriftDiff < diff )
mluis	1:d3b7bde3995c	1999	LMIC.maxDriftDiff = diff;
mluis	1:d3b7bde3995c	2000	LMIC.bcninfo.flags &= ~BCN_NODDIFF;
mluis	1:d3b7bde3995c	2001	}
mluis	1:d3b7bde3995c	2002	LMIC.drift = drift;
mluis	1:d3b7bde3995c	2003	LMIC.missedBcns = LMIC.rejoinCnt = 0;
mluis	1:d3b7bde3995c	2004	LMIC.bcninfo.flags &= ~BCN_NODRIFT;
mluis	1:d3b7bde3995c	2005	EV(devCond,INFO,(e_.reason = EV::devCond_t::CLOCK_DRIFT,
mluis	1:d3b7bde3995c	2006	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	2007	e_.info = drift,
mluis	1:d3b7bde3995c	2008	e_.info2 = /occasion BEACON/0));
mluis	1:d3b7bde3995c	2009	ASSERT((LMIC.bcninfo.flags & (BCN_PARTIAL\|BCN_FULL)) != 0);
mluis	0:62d1edcc13d1	2010	} else {
mluis	1:d3b7bde3995c	2011	ev = EV_BEACON_MISSED;
mluis	1:d3b7bde3995c	2012	LMIC.bcninfo.txtime += BCN_INTV_osticks - LMIC.drift;
mluis	1:d3b7bde3995c	2013	LMIC.bcninfo.time += BCN_INTV_sec;
mluis	1:d3b7bde3995c	2014	LMIC.missedBcns++;
mluis	1:d3b7bde3995c	2015	// Delay any possible TX after surmised beacon - it's there although we missed it
mluis	1:d3b7bde3995c	2016	txDelay(LMIC.bcninfo.txtime + BCN_RESERVE_osticks, 4);
mluis	1:d3b7bde3995c	2017	if( LMIC.missedBcns > MAX_MISSED_BCNS )
mluis	1:d3b7bde3995c	2018	LMIC.opmode \|= OP_REJOIN; // try if we can roam to another network
mluis	1:d3b7bde3995c	2019	if( LMIC.bcnRxsyms > MAX_RXSYMS ) {
mluis	1:d3b7bde3995c	2020	LMIC.opmode &= ~(OP_TRACK\|OP_PINGABLE\|OP_PINGINI\|OP_REJOIN);
mluis	1:d3b7bde3995c	2021	reportEvent(EV_LOST_TSYNC);
mluis	1:d3b7bde3995c	2022	return;
mluis	1:d3b7bde3995c	2023	}
mluis	0:62d1edcc13d1	2024	}
mluis	0:62d1edcc13d1	2025	LMIC.bcnRxtime = LMIC.bcninfo.txtime + BCN_INTV_osticks - calcRxWindow(0,DR_BCN);
mluis	0:62d1edcc13d1	2026	LMIC.bcnRxsyms = LMIC.rxsyms;
mluis	0:62d1edcc13d1	2027	rev:
dudmuck	2:974cafbfb159	2028	#ifdef CFG_us915
mluis	1:d3b7bde3995c	2029	LMIC.bcnChnl = (LMIC.bcnChnl+1) & 7;
mluis	1:d3b7bde3995c	2030	#endif
mluis	0:62d1edcc13d1	2031	if( (LMIC.opmode & OP_PINGINI) != 0 )
mluis	1:d3b7bde3995c	2032	rxschedInit(&LMIC.ping); // note: reuses LMIC.frame buffer!
mluis	0:62d1edcc13d1	2033	reportEvent(ev);
mluis	0:62d1edcc13d1	2034	}
mluis	0:62d1edcc13d1	2035
mluis	0:62d1edcc13d1	2036
mluis	0:62d1edcc13d1	2037	static void startRxBcn (xref2osjob_t osjob) {
mluis	0:62d1edcc13d1	2038	LMIC.osjob.func = FUNC_ADDR(processBeacon);
mluis	0:62d1edcc13d1	2039	os_radio(RADIO_RX);
mluis	0:62d1edcc13d1	2040	}
mluis	0:62d1edcc13d1	2041
mluis	0:62d1edcc13d1	2042
mluis	0:62d1edcc13d1	2043	static void startRxPing (xref2osjob_t osjob) {
mluis	0:62d1edcc13d1	2044	LMIC.osjob.func = FUNC_ADDR(processPingRx);
mluis	0:62d1edcc13d1	2045	os_radio(RADIO_RX);
mluis	0:62d1edcc13d1	2046	}
mluis	0:62d1edcc13d1	2047
mluis	0:62d1edcc13d1	2048
mluis	0:62d1edcc13d1	2049	// Decide what to do next for the MAC layer of a device
mluis	0:62d1edcc13d1	2050	static void engineUpdate (void) {
mluis	0:62d1edcc13d1	2051	// Check for ongoing state: scan or TX/RX transaction
mluis	0:62d1edcc13d1	2052	if( (LMIC.opmode & (OP_SCAN\|OP_TXRXPEND\|OP_SHUTDOWN)) != 0 )
mluis	1:d3b7bde3995c	2053	return;
mluis	0:62d1edcc13d1	2054
mluis	0:62d1edcc13d1	2055	if( LMIC.devaddr == 0 && (LMIC.opmode & OP_JOINING) == 0 ) {
mluis	1:d3b7bde3995c	2056	LMIC_startJoining();
mluis	1:d3b7bde3995c	2057	return;
mluis	0:62d1edcc13d1	2058	}
mluis	0:62d1edcc13d1	2059
mluis	0:62d1edcc13d1	2060	ostime_t now = os_getTime();
mluis	0:62d1edcc13d1	2061	ostime_t rxtime = 0;
mluis	0:62d1edcc13d1	2062	ostime_t txbeg = 0;
mluis	0:62d1edcc13d1	2063
mluis	0:62d1edcc13d1	2064	if( (LMIC.opmode & OP_TRACK) != 0 ) {
mluis	1:d3b7bde3995c	2065	// We are tracking a beacon
mluis	1:d3b7bde3995c	2066	ASSERT( now + RX_RAMPUP - LMIC.bcnRxtime <= 0 );
mluis	1:d3b7bde3995c	2067	rxtime = LMIC.bcnRxtime - RX_RAMPUP;
mluis	0:62d1edcc13d1	2068	}
mluis	0:62d1edcc13d1	2069
mluis	0:62d1edcc13d1	2070	if( (LMIC.opmode & (OP_JOINING\|OP_REJOIN\|OP_TXDATA\|OP_POLL)) != 0 ) {
mluis	1:d3b7bde3995c	2071	// Need to TX some data...
mluis	1:d3b7bde3995c	2072	// Assuming txChnl points to channel which first becomes available again.
mluis	1:d3b7bde3995c	2073	bit_t jacc = ((LMIC.opmode & (OP_JOINING\|OP_REJOIN)) != 0 ? 1 : 0);
mluis	1:d3b7bde3995c	2074	// Find next suitable channel and return availability time
mluis	1:d3b7bde3995c	2075	if( (LMIC.opmode & OP_NEXTCHNL) != 0 ) {
mluis	1:d3b7bde3995c	2076	txbeg = LMIC.txend = nextTx(now);
mluis	1:d3b7bde3995c	2077	LMIC.opmode &= ~OP_NEXTCHNL;
mluis	0:62d1edcc13d1	2078	} else {
mluis	1:d3b7bde3995c	2079	txbeg = LMIC.txend;
mluis	1:d3b7bde3995c	2080	}
mluis	1:d3b7bde3995c	2081	// Delayed TX or waiting for duty cycle?
mluis	1:d3b7bde3995c	2082	if( (LMIC.globalDutyRate != 0 \|\| (LMIC.opmode & OP_RNDTX) != 0) && (txbeg - LMIC.globalDutyAvail) < 0 )
mluis	1:d3b7bde3995c	2083	txbeg = LMIC.globalDutyAvail;
mluis	1:d3b7bde3995c	2084	// If we're tracking a beacon...
mluis	1:d3b7bde3995c	2085	// then make sure TX-RX transaction is complete before beacon
mluis	1:d3b7bde3995c	2086	if( (LMIC.opmode & OP_TRACK) != 0 &&
mluis	1:d3b7bde3995c	2087	txbeg + (jacc ? JOIN_GUARD_osticks : TXRX_GUARD_osticks) - rxtime > 0 ) {
mluis	1:d3b7bde3995c	2088	// Not enough time to complete TX-RX before beacon - postpone after beacon.
mluis	1:d3b7bde3995c	2089	// In order to avoid clustering of postponed TX right after beacon randomize start!
mluis	1:d3b7bde3995c	2090	txDelay(rxtime + BCN_RESERVE_osticks, 16);
mluis	1:d3b7bde3995c	2091	txbeg = 0;
mluis	1:d3b7bde3995c	2092	goto checkrx;
mluis	0:62d1edcc13d1	2093	}
mluis	1:d3b7bde3995c	2094	// Earliest possible time vs overhead to setup radio
mluis	1:d3b7bde3995c	2095	if( txbeg - (now + TX_RAMPUP) < 0 ) {
mluis	1:d3b7bde3995c	2096	// We could send right now!
mluis	1:d3b7bde3995c	2097	dr_t txdr = (dr_t)LMIC.datarate;
dudmuck	2:974cafbfb159	2098	txbeg = now;
mluis	1:d3b7bde3995c	2099	if( jacc ) {
mluis	1:d3b7bde3995c	2100	u1_t ftype;
mluis	1:d3b7bde3995c	2101	if( (LMIC.opmode & OP_REJOIN) != 0 ) {
mluis	1:d3b7bde3995c	2102	txdr = lowerDR(txdr, LMIC.rejoinCnt);
dudmuck	2:974cafbfb159	2103	//ftype = HDR_FTYPE_REJOIN;
dudmuck	2:974cafbfb159	2104	ftype = HDR_FTYPE_JREQ;
mluis	1:d3b7bde3995c	2105	} else {
mluis	1:d3b7bde3995c	2106	ftype = HDR_FTYPE_JREQ;
mluis	1:d3b7bde3995c	2107	}
mluis	1:d3b7bde3995c	2108	buildJoinRequest(ftype);
mluis	1:d3b7bde3995c	2109	LMIC.osjob.func = FUNC_ADDR(jreqDone);
mluis	1:d3b7bde3995c	2110	} else {
mluis	1:d3b7bde3995c	2111	if( LMIC.seqnoDn >= 0xFFFFFF80 ) {
mluis	1:d3b7bde3995c	2112	// Imminent roll over - proactively reset MAC
mluis	1:d3b7bde3995c	2113	EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_ROLL_OVER,
mluis	1:d3b7bde3995c	2114	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	2115	e_.info = LMIC.seqnoDn,
mluis	1:d3b7bde3995c	2116	e_.info2 = 0));
mluis	1:d3b7bde3995c	2117	// Device has to react! NWK will not roll over and just stop sending.
mluis	1:d3b7bde3995c	2118	// Thus, we have N frames to detect a possible lock up.
mluis	1:d3b7bde3995c	2119	reset:
mluis	1:d3b7bde3995c	2120	os_setCallback(&LMIC.osjob, FUNC_ADDR(runReset));
mluis	1:d3b7bde3995c	2121	return;
mluis	1:d3b7bde3995c	2122	}
mluis	1:d3b7bde3995c	2123	if( (LMIC.txCnt==0 && LMIC.seqnoUp == 0xFFFFFFFF) ) {
mluis	1:d3b7bde3995c	2124	// Roll over of up seq counter
mluis	1:d3b7bde3995c	2125	EV(specCond, ERR, (e_.reason = EV::specCond_t::UPSEQNO_ROLL_OVER,
mluis	1:d3b7bde3995c	2126	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	2127	e_.info2 = LMIC.seqnoUp));
mluis	1:d3b7bde3995c	2128	// Do not run RESET event callback from here!
mluis	1:d3b7bde3995c	2129	// App code might do some stuff after send unaware of RESET.
mluis	1:d3b7bde3995c	2130	goto reset;
mluis	1:d3b7bde3995c	2131	}
mluis	1:d3b7bde3995c	2132	buildDataFrame();
mluis	1:d3b7bde3995c	2133	LMIC.osjob.func = FUNC_ADDR(updataDone);
mluis	1:d3b7bde3995c	2134	}
mluis	1:d3b7bde3995c	2135	LMIC.rps = setCr(updr2rps(txdr), (cr_t)LMIC.errcr);
mluis	1:d3b7bde3995c	2136	LMIC.dndr = txdr; // carry TX datarate (can be != LMIC.datarate) over to txDone/setupRx1
mluis	1:d3b7bde3995c	2137	LMIC.opmode = (LMIC.opmode & ~(OP_POLL\|OP_RNDTX)) \| OP_TXRXPEND \| OP_NEXTCHNL;
mluis	1:d3b7bde3995c	2138	updateTx(txbeg);
mluis	1:d3b7bde3995c	2139	os_radio(RADIO_TX);
mluis	0:62d1edcc13d1	2140	return;
mluis	0:62d1edcc13d1	2141	}
mluis	1:d3b7bde3995c	2142	// Cannot yet TX
mluis	1:d3b7bde3995c	2143	if( (LMIC.opmode & OP_TRACK) == 0 )
mluis	1:d3b7bde3995c	2144	goto txdelay; // We don't track the beacon - nothing else to do - so wait for the time to TX
mluis	1:d3b7bde3995c	2145	// Consider RX tasks
mluis	1:d3b7bde3995c	2146	if( txbeg == 0 ) // zero indicates no TX pending
mluis	1:d3b7bde3995c	2147	txbeg += 1; // TX delayed by one tick (insignificant amount of time)
mluis	0:62d1edcc13d1	2148	} else {
mluis	1:d3b7bde3995c	2149	// No TX pending - no scheduled RX
mluis	1:d3b7bde3995c	2150	if( (LMIC.opmode & OP_TRACK) == 0 )
mluis	1:d3b7bde3995c	2151	return;
mluis	0:62d1edcc13d1	2152	}
mluis	0:62d1edcc13d1	2153
mluis	0:62d1edcc13d1	2154	// Are we pingable?
mluis	0:62d1edcc13d1	2155	checkrx:
mluis	0:62d1edcc13d1	2156	if( (LMIC.opmode & OP_PINGINI) != 0 ) {
mluis	1:d3b7bde3995c	2157	// One more RX slot in this beacon period?
mluis	1:d3b7bde3995c	2158	if( rxschedNext(&LMIC.ping, now+RX_RAMPUP) ) {
mluis	1:d3b7bde3995c	2159	if( txbeg != 0 && (txbeg - LMIC.ping.rxtime) < 0 )
mluis	1:d3b7bde3995c	2160	goto txdelay;
mluis	1:d3b7bde3995c	2161	LMIC.rxsyms = LMIC.ping.rxsyms;
mluis	1:d3b7bde3995c	2162	LMIC.rxtime = LMIC.ping.rxtime;
mluis	1:d3b7bde3995c	2163	LMIC.freq = LMIC.ping.freq;
mluis	1:d3b7bde3995c	2164	LMIC.rps = dndr2rps(LMIC.ping.dr);
mluis	1:d3b7bde3995c	2165	LMIC.dataLen = 0;
mluis	1:d3b7bde3995c	2166	ASSERT(LMIC.rxtime - now+RX_RAMPUP >= 0 );
mluis	1:d3b7bde3995c	2167	os_setTimedCallback(&LMIC.osjob, LMIC.rxtime - RX_RAMPUP, FUNC_ADDR(startRxPing));
mluis	1:d3b7bde3995c	2168	return;
mluis	1:d3b7bde3995c	2169	}
mluis	1:d3b7bde3995c	2170	// no - just wait for the beacon
mluis	0:62d1edcc13d1	2171	}
mluis	0:62d1edcc13d1	2172
mluis	0:62d1edcc13d1	2173	if( txbeg != 0 && (txbeg - rxtime) < 0 )
mluis	1:d3b7bde3995c	2174	goto txdelay;
mluis	0:62d1edcc13d1	2175
mluis	0:62d1edcc13d1	2176	setBcnRxParams();
mluis	0:62d1edcc13d1	2177	LMIC.rxsyms = LMIC.bcnRxsyms;
mluis	0:62d1edcc13d1	2178	LMIC.rxtime = LMIC.bcnRxtime;
mluis	0:62d1edcc13d1	2179	if( now - rxtime >= 0 ) {
mluis	1:d3b7bde3995c	2180	LMIC.osjob.func = FUNC_ADDR(processBeacon);
mluis	1:d3b7bde3995c	2181	os_radio(RADIO_RX);
mluis	1:d3b7bde3995c	2182	return;
mluis	0:62d1edcc13d1	2183	}
mluis	0:62d1edcc13d1	2184	os_setTimedCallback(&LMIC.osjob, rxtime, FUNC_ADDR(startRxBcn));
mluis	0:62d1edcc13d1	2185	return;
mluis	0:62d1edcc13d1	2186
mluis	0:62d1edcc13d1	2187	txdelay:
mluis	0:62d1edcc13d1	2188	EV(devCond, INFO, (e_.reason = EV::devCond_t::TX_DELAY,
mluis	1:d3b7bde3995c	2189	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	2190	e_.info = osticks2ms(txbeg-now),
mluis	1:d3b7bde3995c	2191	e_.info2 = LMIC.seqnoUp-1));
mluis	0:62d1edcc13d1	2192	os_setTimedCallback(&LMIC.osjob, txbeg-TX_RAMPUP, FUNC_ADDR(runEngineUpdate));
mluis	0:62d1edcc13d1	2193	}
mluis	0:62d1edcc13d1	2194
mluis	0:62d1edcc13d1	2195
mluis	0:62d1edcc13d1	2196	void LMIC_setAdrMode (bit_t enabled) {
mluis	0:62d1edcc13d1	2197	LMIC.adrEnabled = enabled ? FCT_ADREN : 0;
mluis	0:62d1edcc13d1	2198	}
mluis	0:62d1edcc13d1	2199
mluis	0:62d1edcc13d1	2200
mluis	0:62d1edcc13d1	2201	// Should we have/need an ext. API like this?
mluis	0:62d1edcc13d1	2202	void LMIC_setDrTxpow (dr_t dr, s1_t txpow) {
mluis	0:62d1edcc13d1	2203	setDrTxpow(DRCHG_SET, dr, txpow);
mluis	0:62d1edcc13d1	2204	}
mluis	0:62d1edcc13d1	2205
mluis	0:62d1edcc13d1	2206
mluis	0:62d1edcc13d1	2207	void LMIC_shutdown (void) {
mluis	0:62d1edcc13d1	2208	os_clearCallback(&LMIC.osjob);
mluis	0:62d1edcc13d1	2209	os_radio(RADIO_RST);
mluis	0:62d1edcc13d1	2210	LMIC.opmode \|= OP_SHUTDOWN;
mluis	0:62d1edcc13d1	2211	}
mluis	0:62d1edcc13d1	2212
mluis	0:62d1edcc13d1	2213
mluis	0:62d1edcc13d1	2214	void LMIC_reset (void) {
mluis	0:62d1edcc13d1	2215	EV(devCond, INFO, (e_.reason = EV::devCond_t::LMIC_EV,
mluis	1:d3b7bde3995c	2216	e_.eui = MAIN::CDEV->getEui(),
mluis	1:d3b7bde3995c	2217	e_.info = EV_RESET));
mluis	0:62d1edcc13d1	2218	os_radio(RADIO_RST);
mluis	0:62d1edcc13d1	2219	os_clearCallback(&LMIC.osjob);
mluis	0:62d1edcc13d1	2220
mluis	0:62d1edcc13d1	2221	os_clearMem((xref2u1_t)&LMIC,SIZEOFEXPR(LMIC));
mluis	1:d3b7bde3995c	2222	LMIC.devaddr = 0;
mluis	1:d3b7bde3995c	2223	LMIC.devNonce = os_getRndU2();
mluis	1:d3b7bde3995c	2224	LMIC.opmode = OP_NONE;
mluis	1:d3b7bde3995c	2225	LMIC.errcr = CR_4_5;
mluis	1:d3b7bde3995c	2226	LMIC.adrEnabled = FCT_ADREN;
mluis	1:d3b7bde3995c	2227	LMIC.dn2Dr = DR_DNW2; // we need this for 2nd DN window of join accept
mluis	1:d3b7bde3995c	2228	LMIC.dn2Freq = FREQ_DNW2; // ditto
mluis	1:d3b7bde3995c	2229	LMIC.ping.freq = FREQ_PING; // defaults for ping
mluis	1:d3b7bde3995c	2230	LMIC.ping.dr = DR_PING; // ditto
mluis	1:d3b7bde3995c	2231	LMIC.ping.intvExp = 0xFF;
mluis	1:d3b7bde3995c	2232	#if defined(CFG_us915)
mluis	0:62d1edcc13d1	2233	initDefaultChannels();
mluis	0:62d1edcc13d1	2234	#endif
mluis	1:d3b7bde3995c	2235	DO_DEVDB(LMIC.devaddr, devaddr);
mluis	1:d3b7bde3995c	2236	DO_DEVDB(LMIC.devNonce, devNonce);
mluis	1:d3b7bde3995c	2237	DO_DEVDB(LMIC.dn2Dr, dn2Dr);
mluis	1:d3b7bde3995c	2238	DO_DEVDB(LMIC.dn2Freq, dn2Freq);
mluis	1:d3b7bde3995c	2239	DO_DEVDB(LMIC.ping.freq, pingFreq);
mluis	1:d3b7bde3995c	2240	DO_DEVDB(LMIC.ping.dr, pingDr);
mluis	1:d3b7bde3995c	2241	DO_DEVDB(LMIC.ping.intvExp, pingIntvExp);
mluis	0:62d1edcc13d1	2242	}
mluis	0:62d1edcc13d1	2243
mluis	0:62d1edcc13d1	2244
mluis	0:62d1edcc13d1	2245	void LMIC_init (void) {
tmulrooney	5:464c1f2d6cbb	2246	debug("LMIC_init enter\r\n");
mluis	0:62d1edcc13d1	2247	LMIC.opmode = OP_SHUTDOWN;
mluis	0:62d1edcc13d1	2248	}
mluis	0:62d1edcc13d1	2249
mluis	0:62d1edcc13d1	2250
mluis	0:62d1edcc13d1	2251	void LMIC_clrTxData (void) {
mluis	0:62d1edcc13d1	2252	LMIC.opmode &= ~(OP_TXDATA\|OP_TXRXPEND\|OP_POLL);
mluis	0:62d1edcc13d1	2253	LMIC.pendTxLen = 0;
mluis	0:62d1edcc13d1	2254	if( (LMIC.opmode & (OP_JOINING\|OP_SCAN)) != 0 ) // do not interfere with JOINING
mluis	1:d3b7bde3995c	2255	return;
mluis	0:62d1edcc13d1	2256	os_clearCallback(&LMIC.osjob);
mluis	0:62d1edcc13d1	2257	os_radio(RADIO_RST);
mluis	0:62d1edcc13d1	2258	engineUpdate();
mluis	0:62d1edcc13d1	2259	}
mluis	0:62d1edcc13d1	2260
mluis	0:62d1edcc13d1	2261
mluis	0:62d1edcc13d1	2262	void LMIC_setTxData (void) {
mluis	0:62d1edcc13d1	2263	LMIC.opmode \|= OP_TXDATA;
mluis	0:62d1edcc13d1	2264	if( (LMIC.opmode & OP_JOINING) == 0 )
mluis	1:d3b7bde3995c	2265	LMIC.txCnt = 0; // cancel any ongoing TX/RX retries
mluis	0:62d1edcc13d1	2266	engineUpdate();
mluis	0:62d1edcc13d1	2267	}
mluis	0:62d1edcc13d1	2268
mluis	0:62d1edcc13d1	2269
mluis	0:62d1edcc13d1	2270	//
mluis	0:62d1edcc13d1	2271	int LMIC_setTxData2 (u1_t port, xref2u1_t data, u1_t dlen, u1_t confirmed) {
mluis	0:62d1edcc13d1	2272	if( dlen > SIZEOFEXPR(LMIC.pendTxData) )
mluis	1:d3b7bde3995c	2273	return -2;
mluis	0:62d1edcc13d1	2274	if( data != (xref2u1_t)0 )
mluis	1:d3b7bde3995c	2275	os_copyMem(LMIC.pendTxData, data, dlen);
mluis	0:62d1edcc13d1	2276	LMIC.pendTxConf = confirmed;
mluis	0:62d1edcc13d1	2277	LMIC.pendTxPort = port;
mluis	0:62d1edcc13d1	2278	LMIC.pendTxLen = dlen;
mluis	0:62d1edcc13d1	2279	LMIC_setTxData();
mluis	0:62d1edcc13d1	2280	return 0;
mluis	0:62d1edcc13d1	2281	}
mluis	0:62d1edcc13d1	2282
mluis	0:62d1edcc13d1	2283
mluis	0:62d1edcc13d1	2284	// Send a payload-less message to signal device is alive
mluis	0:62d1edcc13d1	2285	void LMIC_sendAlive (void) {
mluis	0:62d1edcc13d1	2286	LMIC.opmode \|= OP_POLL;
mluis	0:62d1edcc13d1	2287	engineUpdate();
mluis	0:62d1edcc13d1	2288	}
mluis	0:62d1edcc13d1	2289
mluis	0:62d1edcc13d1	2290
mluis	0:62d1edcc13d1	2291	// Check if other networks are around.
mluis	0:62d1edcc13d1	2292	void LMIC_tryRejoin (void) {
mluis	0:62d1edcc13d1	2293	LMIC.opmode \|= OP_REJOIN;
mluis	0:62d1edcc13d1	2294	engineUpdate();
mluis	0:62d1edcc13d1	2295	}
mluis	0:62d1edcc13d1	2296
mluis	1:d3b7bde3995c	2297	//! \brief Setup given session keys
mluis	1:d3b7bde3995c	2298	//! and put the MAC in a state as if
mluis	1:d3b7bde3995c	2299	//! a join request/accept would have negotiated just these keys.
mluis	1:d3b7bde3995c	2300	//! It is crucial that the combinations `devaddr/nwkkey` and `devaddr/artkey`
mluis	1:d3b7bde3995c	2301	//! are unique within the network identified by `netid`.
mluis	1:d3b7bde3995c	2302	//! NOTE: on Harvard architectures when session keys are in flash:
mluis	1:d3b7bde3995c	2303	//! Caller has to fill in LMIC.{nwk,art}Key before and pass {nwk,art}Key are NULL
mluis	1:d3b7bde3995c	2304	//! \param netid a 24 bit number describing the network id this device is using
mluis	1:d3b7bde3995c	2305	//! \param devaddr the 32 bit session address of the device. It is strongly recommended
mluis	1:d3b7bde3995c	2306	//! to ensure that different devices use different numbers with high probability.
mluis	1:d3b7bde3995c	2307	//! \param nwkKey the 16 byte network session key used for message integrity.
mluis	1:d3b7bde3995c	2308	//! If NULL the caller has copied the key into `LMIC.nwkKey` before.
mluis	1:d3b7bde3995c	2309	//! \param artKey the 16 byte application router session key used for message confidentiality.
mluis	1:d3b7bde3995c	2310	//! If NULL the caller has copied the key into `LMIC.artKey` before.
mluis	1:d3b7bde3995c	2311	void LMIC_setSession (u4_t netid, devaddr_t devaddr, xref2u1_t nwkKey, xref2u1_t artKey) {
mluis	0:62d1edcc13d1	2312	LMIC.netid = netid;
mluis	0:62d1edcc13d1	2313	LMIC.devaddr = devaddr;
mluis	1:d3b7bde3995c	2314	if( nwkKey != (xref2u1_t)0 )
mluis	1:d3b7bde3995c	2315	os_copyMem(LMIC.nwkKey, nwkKey, 16);
mluis	1:d3b7bde3995c	2316	if( artKey != (xref2u1_t)0 )
mluis	1:d3b7bde3995c	2317	os_copyMem(LMIC.artKey, artKey, 16);
mluis	0:62d1edcc13d1	2318
mluis	1:d3b7bde3995c	2319	#if defined(CFG_eu868)
mluis	0:62d1edcc13d1	2320	initDefaultChannels(0);
mluis	0:62d1edcc13d1	2321	#endif
mluis	1:d3b7bde3995c	2322
mluis	1:d3b7bde3995c	2323	LMIC.opmode &= ~(OP_JOINING\|OP_TRACK\|OP_REJOIN\|OP_TXRXPEND\|OP_PINGINI);
mluis	1:d3b7bde3995c	2324	LMIC.opmode \|= OP_NEXTCHNL;
mluis	0:62d1edcc13d1	2325	stateJustJoined();
mluis	0:62d1edcc13d1	2326	}
mluis	1:d3b7bde3995c	2327
mluis	1:d3b7bde3995c	2328	// Enable/disable link check validation.
mluis	1:d3b7bde3995c	2329	// LMIC sets the ADRACKREQ bit in UP frames if there were no DN frames
mluis	1:d3b7bde3995c	2330	// for a while. It expects the network to provide a DN message to prove
mluis	1:d3b7bde3995c	2331	// connectivity with a span of UP frames. If this no such prove is coming
mluis	1:d3b7bde3995c	2332	// then the datarate is lowered and a LINK_DEAD event is generated.
mluis	1:d3b7bde3995c	2333	// This mode can be disabled and no connectivity prove (ADRACKREQ) is requested
mluis	1:d3b7bde3995c	2334	// nor is the datarate changed.
mluis	1:d3b7bde3995c	2335	// This must be called only if a session is established (e.g. after EV_JOINED)
mluis	1:d3b7bde3995c	2336	void LMIC_setLinkCheckMode (bit_t enabled) {
mluis	1:d3b7bde3995c	2337	LMIC.adrChanged = 0;
mluis	1:d3b7bde3995c	2338	LMIC.adrAckReq = enabled ? LINK_CHECK_INIT : LINK_CHECK_OFF;
mluis	1:d3b7bde3995c	2339	}
mluis	1:d3b7bde3995c	2340
dudmuck	2:974cafbfb159	2341	void LMIC_reverse_memcpy(u1_t dst, const u1_t src, size_t n)
dudmuck	2:974cafbfb159	2342	{
dudmuck	2:974cafbfb159	2343	size_t i;
dudmuck	2:974cafbfb159	2344
dudmuck	2:974cafbfb159	2345	for (i=0; i < n; ++i)
dudmuck	2:974cafbfb159	2346	dst[n-1-i] = src[i];
dudmuck	2:974cafbfb159	2347	}

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Type:	Library
Created:	23 Feb 2016
Imports:	0
Forks:	1
Commits:	8
Dependents:	1
Dependencies:	0
Followers:	1

lmic.cpp@5:464c1f2d6cbb, 2016-02-23 (annotated)

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