lmic_MOTE_L152RC - LMIC for MOTE_L152RC

Semtech » Code » lmic_MOTE_L152RC

LMIC for MOTE_L152RC

Currently version 1.5

LoRaWAN network configuration for end-device

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

AppEUI

Uniquely identifies application provider of end-device.

Least-significant byte first, 8 bytes. Use LMIC_reverse_memcpy() for AppEUI to keep same byte order as that on lora server.

example C code

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

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

DevEUI

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

Least-significant byte first, 8 bytes. Use LMIC_reverse_memcpy() for DevEUI to keep same byte order as that on lora server.

example C code

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

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

AppKey (aka DevKey)

128-bit (16byte) AES key.

example C code

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

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

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

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

log in to server
click on Applications
find your application and click it
go to configure motes
to create a mote, you may enter a new DevEUI
- you may copy-paste the 16byte application key from an already existing mote, if you desire.

Information

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

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

AppEUI is equivalent to "Application"

transmit power limits

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

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

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

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

lmic.cpp@5:e4ba433f0ac1, 2015-07-17 (annotated)

Committer:: dudmuck
Date:: Fri Jul 17 21:09:16 2015 +0000
Revision:: 5:e4ba433f0ac1
Parent:: 0:f2716e543d97
Child:: 7:9095e54e381f

add txpow_limit to limit transmit power

Who changed what in which revision?

User	Revision	Line number	New contents of line
dudmuck	0:f2716e543d97	1	/*******************************************************************************
dudmuck	0:f2716e543d97	2	* Copyright (c) 2014-2015 IBM Corporation.
dudmuck	0:f2716e543d97	3	* All rights reserved. This program and the accompanying materials
dudmuck	0:f2716e543d97	4	* are made available under the terms of the Eclipse Public License v1.0
dudmuck	0:f2716e543d97	5	* which accompanies this distribution, and is available at
dudmuck	0:f2716e543d97	6	* http://www.eclipse.org/legal/epl-v10.html
dudmuck	0:f2716e543d97	7	*
dudmuck	0:f2716e543d97	8	* Contributors:
dudmuck	0:f2716e543d97	9	* IBM Zurich Research Lab - initial API, implementation and documentation
dudmuck	0:f2716e543d97	10	*******************************************************************************/
dudmuck	0:f2716e543d97	11
dudmuck	0:f2716e543d97	12	//! \file
dudmuck	0:f2716e543d97	13	#include "lmic.h"
dudmuck	0:f2716e543d97	14
dudmuck	0:f2716e543d97	15	#if !defined(MINRX_SYMS)
dudmuck	0:f2716e543d97	16	#define MINRX_SYMS 5
dudmuck	0:f2716e543d97	17	#endif // !defined(MINRX_SYMS)
dudmuck	0:f2716e543d97	18	#define PAMBL_SYMS 8
dudmuck	0:f2716e543d97	19	#define PAMBL_FSK 5
dudmuck	0:f2716e543d97	20	#define PRERX_FSK 1
dudmuck	0:f2716e543d97	21	#define RXLEN_FSK (1+5+2)
dudmuck	0:f2716e543d97	22
dudmuck	0:f2716e543d97	23	#define BCN_INTV_osticks sec2osticks(BCN_INTV_sec)
dudmuck	0:f2716e543d97	24	#define TXRX_GUARD_osticks ms2osticks(TXRX_GUARD_ms)
dudmuck	0:f2716e543d97	25	#define JOIN_GUARD_osticks ms2osticks(JOIN_GUARD_ms)
dudmuck	0:f2716e543d97	26	#define DELAY_DNW1_osticks sec2osticks(DELAY_DNW1)
dudmuck	0:f2716e543d97	27	#define DELAY_DNW2_osticks sec2osticks(DELAY_DNW2)
dudmuck	0:f2716e543d97	28	#define DELAY_JACC1_osticks sec2osticks(DELAY_JACC1)
dudmuck	0:f2716e543d97	29	#define DELAY_JACC2_osticks sec2osticks(DELAY_JACC2)
dudmuck	0:f2716e543d97	30	#define DELAY_EXTDNW2_osticks sec2osticks(DELAY_EXTDNW2)
dudmuck	0:f2716e543d97	31	#define BCN_RESERVE_osticks ms2osticks(BCN_RESERVE_ms)
dudmuck	0:f2716e543d97	32	#define BCN_GUARD_osticks ms2osticks(BCN_GUARD_ms)
dudmuck	0:f2716e543d97	33	#define BCN_WINDOW_osticks ms2osticks(BCN_WINDOW_ms)
dudmuck	0:f2716e543d97	34	#define AIRTIME_BCN_osticks us2osticks(AIRTIME_BCN)
dudmuck	0:f2716e543d97	35	#if defined(CFG_eu868)
dudmuck	0:f2716e543d97	36	#define DNW2_SAFETY_ZONE ms2osticks(3000)
dudmuck	0:f2716e543d97	37	#endif
dudmuck	0:f2716e543d97	38	#if defined(CFG_us915)
dudmuck	0:f2716e543d97	39	#define DNW2_SAFETY_ZONE ms2osticks(750)
dudmuck	0:f2716e543d97	40	#endif
dudmuck	0:f2716e543d97	41
dudmuck	0:f2716e543d97	42	// Special APIs - for development or testing
dudmuck	0:f2716e543d97	43	#define isTESTMODE() 0
dudmuck	0:f2716e543d97	44
dudmuck	0:f2716e543d97	45	DEFINE_LMIC;
dudmuck	0:f2716e543d97	46	DECL_ON_LMIC_EVENT;
dudmuck	0:f2716e543d97	47
dudmuck	0:f2716e543d97	48
dudmuck	0:f2716e543d97	49	// Fwd decls.
dudmuck	0:f2716e543d97	50	static void engineUpdate(void);
dudmuck	0:f2716e543d97	51	static void startScan (void);
dudmuck	0:f2716e543d97	52
dudmuck	0:f2716e543d97	53
dudmuck	0:f2716e543d97	54	// ================================================================================
dudmuck	0:f2716e543d97	55	// BEG OS - default implementations for certain OS suport functions
dudmuck	0:f2716e543d97	56
dudmuck	0:f2716e543d97	57	#if !defined(HAS_os_calls)
dudmuck	0:f2716e543d97	58
dudmuck	0:f2716e543d97	59	#if !defined(os_rlsbf2)
dudmuck	0:f2716e543d97	60	u2_t os_rlsbf2 (xref2cu1_t buf) {
dudmuck	0:f2716e543d97	61	return (u2_t)(buf[0] \| (buf[1]<<8));
dudmuck	0:f2716e543d97	62	}
dudmuck	0:f2716e543d97	63	#endif
dudmuck	0:f2716e543d97	64
dudmuck	0:f2716e543d97	65	#if !defined(os_rlsbf4)
dudmuck	0:f2716e543d97	66	u4_t os_rlsbf4 (xref2cu1_t buf) {
dudmuck	0:f2716e543d97	67	return (u4_t)(buf[0] \| (buf[1]<<8) \| ((u4_t)buf[2]<<16) \| ((u4_t)buf[3]<<24));
dudmuck	0:f2716e543d97	68	}
dudmuck	0:f2716e543d97	69	#endif
dudmuck	0:f2716e543d97	70
dudmuck	0:f2716e543d97	71
dudmuck	0:f2716e543d97	72	#if !defined(os_rmsbf4)
dudmuck	0:f2716e543d97	73	u4_t os_rmsbf4 (xref2cu1_t buf) {
dudmuck	0:f2716e543d97	74	return (u4_t)(buf[3] \| (buf[2]<<8) \| ((u4_t)buf[1]<<16) \| ((u4_t)buf[0]<<24));
dudmuck	0:f2716e543d97	75	}
dudmuck	0:f2716e543d97	76	#endif
dudmuck	0:f2716e543d97	77
dudmuck	0:f2716e543d97	78
dudmuck	0:f2716e543d97	79	#if !defined(os_wlsbf2)
dudmuck	0:f2716e543d97	80	void os_wlsbf2 (xref2u1_t buf, u2_t v) {
dudmuck	0:f2716e543d97	81	buf[0] = v;
dudmuck	0:f2716e543d97	82	buf[1] = v>>8;
dudmuck	0:f2716e543d97	83	}
dudmuck	0:f2716e543d97	84	#endif
dudmuck	0:f2716e543d97	85
dudmuck	0:f2716e543d97	86	#if !defined(os_wlsbf4)
dudmuck	0:f2716e543d97	87	void os_wlsbf4 (xref2u1_t buf, u4_t v) {
dudmuck	0:f2716e543d97	88	buf[0] = v;
dudmuck	0:f2716e543d97	89	buf[1] = v>>8;
dudmuck	0:f2716e543d97	90	buf[2] = v>>16;
dudmuck	0:f2716e543d97	91	buf[3] = v>>24;
dudmuck	0:f2716e543d97	92	}
dudmuck	0:f2716e543d97	93	#endif
dudmuck	0:f2716e543d97	94
dudmuck	0:f2716e543d97	95	#if !defined(os_wmsbf4)
dudmuck	0:f2716e543d97	96	void os_wmsbf4 (xref2u1_t buf, u4_t v) {
dudmuck	0:f2716e543d97	97	buf[3] = v;
dudmuck	0:f2716e543d97	98	buf[2] = v>>8;
dudmuck	0:f2716e543d97	99	buf[1] = v>>16;
dudmuck	0:f2716e543d97	100	buf[0] = v>>24;
dudmuck	0:f2716e543d97	101	}
dudmuck	0:f2716e543d97	102	#endif
dudmuck	0:f2716e543d97	103
dudmuck	0:f2716e543d97	104	#if !defined(os_getBattLevel)
dudmuck	0:f2716e543d97	105	u1_t os_getBattLevel (void) {
dudmuck	0:f2716e543d97	106	return MCMD_DEVS_BATT_NOINFO;
dudmuck	0:f2716e543d97	107	}
dudmuck	0:f2716e543d97	108	#endif
dudmuck	0:f2716e543d97	109
dudmuck	0:f2716e543d97	110	#if !defined(os_crc16)
dudmuck	0:f2716e543d97	111	// New CRC-16 CCITT(XMODEM) checksum for beacons:
dudmuck	0:f2716e543d97	112	u2_t os_crc16 (xref2u1_t data, uint len) {
dudmuck	0:f2716e543d97	113	u2_t remainder = 0;
dudmuck	0:f2716e543d97	114	u2_t polynomial = 0x1021;
dudmuck	0:f2716e543d97	115	for( uint i = 0; i < len; i++ ) {
dudmuck	0:f2716e543d97	116	remainder ^= data[i] << 8;
dudmuck	0:f2716e543d97	117	for( u1_t bit = 8; bit > 0; bit--) {
dudmuck	0:f2716e543d97	118	if( (remainder & 0x8000) )
dudmuck	0:f2716e543d97	119	remainder = (remainder << 1) ^ polynomial;
dudmuck	0:f2716e543d97	120	else
dudmuck	0:f2716e543d97	121	remainder <<= 1;
dudmuck	0:f2716e543d97	122	}
dudmuck	0:f2716e543d97	123	}
dudmuck	0:f2716e543d97	124	return remainder;
dudmuck	0:f2716e543d97	125	}
dudmuck	0:f2716e543d97	126	#endif
dudmuck	0:f2716e543d97	127
dudmuck	0:f2716e543d97	128	#endif // !HAS_os_calls
dudmuck	0:f2716e543d97	129
dudmuck	0:f2716e543d97	130	// END OS - default implementations for certain OS suport functions
dudmuck	0:f2716e543d97	131	// ================================================================================
dudmuck	0:f2716e543d97	132
dudmuck	0:f2716e543d97	133	// ================================================================================
dudmuck	0:f2716e543d97	134	// BEG AES
dudmuck	0:f2716e543d97	135
dudmuck	0:f2716e543d97	136	static void micB0 (u4_t devaddr, u4_t seqno, int dndir, int len) {
dudmuck	0:f2716e543d97	137	os_clearMem(AESaux,16);
dudmuck	0:f2716e543d97	138	AESaux[0] = 0x49;
dudmuck	0:f2716e543d97	139	AESaux[5] = dndir?1:0;
dudmuck	0:f2716e543d97	140	AESaux[15] = len;
dudmuck	0:f2716e543d97	141	os_wlsbf4(AESaux+ 6,devaddr);
dudmuck	0:f2716e543d97	142	os_wlsbf4(AESaux+10,seqno);
dudmuck	0:f2716e543d97	143	}
dudmuck	0:f2716e543d97	144
dudmuck	0:f2716e543d97	145
dudmuck	0:f2716e543d97	146	static int aes_verifyMic (xref2cu1_t key, u4_t devaddr, u4_t seqno, int dndir, xref2u1_t pdu, int len) {
dudmuck	0:f2716e543d97	147	micB0(devaddr, seqno, dndir, len);
dudmuck	0:f2716e543d97	148	os_copyMem(AESkey,key,16);
dudmuck	0:f2716e543d97	149	return os_aes(AES_MIC, pdu, len) == os_rmsbf4(pdu+len);
dudmuck	0:f2716e543d97	150	}
dudmuck	0:f2716e543d97	151
dudmuck	0:f2716e543d97	152
dudmuck	0:f2716e543d97	153	static void aes_appendMic (xref2cu1_t key, u4_t devaddr, u4_t seqno, int dndir, xref2u1_t pdu, int len) {
dudmuck	0:f2716e543d97	154	micB0(devaddr, seqno, dndir, len);
dudmuck	0:f2716e543d97	155	os_copyMem(AESkey,key,16);
dudmuck	0:f2716e543d97	156	// MSB because of internal structure of AES
dudmuck	0:f2716e543d97	157	os_wmsbf4(pdu+len, os_aes(AES_MIC, pdu, len));
dudmuck	0:f2716e543d97	158	}
dudmuck	0:f2716e543d97	159
dudmuck	0:f2716e543d97	160
dudmuck	0:f2716e543d97	161	static void aes_appendMic0 (xref2u1_t pdu, int len) {
dudmuck	0:f2716e543d97	162	os_getDevKey(AESkey);
dudmuck	0:f2716e543d97	163	os_wmsbf4(pdu+len, os_aes(AES_MIC\|AES_MICNOAUX, pdu, len)); // MSB because of internal structure of AES
dudmuck	0:f2716e543d97	164	}
dudmuck	0:f2716e543d97	165
dudmuck	0:f2716e543d97	166
dudmuck	0:f2716e543d97	167	static int aes_verifyMic0 (xref2u1_t pdu, int len) {
dudmuck	0:f2716e543d97	168	os_getDevKey(AESkey);
dudmuck	0:f2716e543d97	169	return os_aes(AES_MIC\|AES_MICNOAUX, pdu, len) == os_rmsbf4(pdu+len);
dudmuck	0:f2716e543d97	170	}
dudmuck	0:f2716e543d97	171
dudmuck	0:f2716e543d97	172
dudmuck	0:f2716e543d97	173	static void aes_encrypt (xref2u1_t pdu, int len) {
dudmuck	0:f2716e543d97	174	os_getDevKey(AESkey);
dudmuck	0:f2716e543d97	175	os_aes(AES_ENC, pdu, len);
dudmuck	0:f2716e543d97	176	}
dudmuck	0:f2716e543d97	177
dudmuck	0:f2716e543d97	178
dudmuck	0:f2716e543d97	179	static void aes_cipher (xref2cu1_t key, u4_t devaddr, u4_t seqno, int dndir, xref2u1_t payload, int len) {
dudmuck	0:f2716e543d97	180	if( len <= 0 )
dudmuck	0:f2716e543d97	181	return;
dudmuck	0:f2716e543d97	182	os_clearMem(AESaux, 16);
dudmuck	0:f2716e543d97	183	AESaux[0] = AESaux[15] = 1; // mode=cipher / dir=down / block counter=1
dudmuck	0:f2716e543d97	184	AESaux[5] = dndir?1:0;
dudmuck	0:f2716e543d97	185	os_wlsbf4(AESaux+ 6,devaddr);
dudmuck	0:f2716e543d97	186	os_wlsbf4(AESaux+10,seqno);
dudmuck	0:f2716e543d97	187	os_copyMem(AESkey,key,16);
dudmuck	0:f2716e543d97	188	os_aes(AES_CTR, payload, len);
dudmuck	0:f2716e543d97	189	}
dudmuck	0:f2716e543d97	190
dudmuck	0:f2716e543d97	191
dudmuck	0:f2716e543d97	192	static void aes_sessKeys (u2_t devnonce, xref2cu1_t artnonce, xref2u1_t nwkkey, xref2u1_t artkey) {
dudmuck	0:f2716e543d97	193	os_clearMem(nwkkey, 16);
dudmuck	0:f2716e543d97	194	nwkkey[0] = 0x01;
dudmuck	0:f2716e543d97	195	os_copyMem(nwkkey+1, artnonce, LEN_ARTNONCE+LEN_NETID);
dudmuck	0:f2716e543d97	196	os_wlsbf2(nwkkey+1+LEN_ARTNONCE+LEN_NETID, devnonce);
dudmuck	0:f2716e543d97	197	os_copyMem(artkey, nwkkey, 16);
dudmuck	0:f2716e543d97	198	artkey[0] = 0x02;
dudmuck	0:f2716e543d97	199
dudmuck	0:f2716e543d97	200	os_getDevKey(AESkey);
dudmuck	0:f2716e543d97	201	os_aes(AES_ENC, nwkkey, 16);
dudmuck	0:f2716e543d97	202	os_getDevKey(AESkey);
dudmuck	0:f2716e543d97	203	os_aes(AES_ENC, artkey, 16);
dudmuck	0:f2716e543d97	204	}
dudmuck	0:f2716e543d97	205
dudmuck	0:f2716e543d97	206	// END AES
dudmuck	0:f2716e543d97	207	// ================================================================================
dudmuck	0:f2716e543d97	208
dudmuck	0:f2716e543d97	209
dudmuck	0:f2716e543d97	210	// ================================================================================
dudmuck	0:f2716e543d97	211	// BEG LORA
dudmuck	0:f2716e543d97	212
dudmuck	0:f2716e543d97	213	#if defined(CFG_eu868) // ========================================
dudmuck	0:f2716e543d97	214
dudmuck	0:f2716e543d97	215	#define maxFrameLen(dr) ((dr)<=DR_SF9 ? maxFrameLens[(dr)] : 0xFF)
dudmuck	0:f2716e543d97	216	const u1_t maxFrameLens [] = { 64,64,64,123 };
dudmuck	0:f2716e543d97	217
dudmuck	0:f2716e543d97	218	const u1_t _DR2RPS_CRC[] = {
dudmuck	0:f2716e543d97	219	ILLEGAL_RPS,
dudmuck	0:f2716e543d97	220	(u1_t)MAKERPS(SF12, BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	221	(u1_t)MAKERPS(SF11, BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	222	(u1_t)MAKERPS(SF10, BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	223	(u1_t)MAKERPS(SF9, BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	224	(u1_t)MAKERPS(SF8, BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	225	(u1_t)MAKERPS(SF7, BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	226	(u1_t)MAKERPS(SF7, BW250, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	227	(u1_t)MAKERPS(FSK, BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	228	ILLEGAL_RPS
dudmuck	0:f2716e543d97	229	};
dudmuck	0:f2716e543d97	230
dudmuck	0:f2716e543d97	231	static const s1_t TXPOWLEVELS[] = {
dudmuck	0:f2716e543d97	232	20, 14, 11, 8, 5, 2, 0,0, 0,0,0,0, 0,0,0,0
dudmuck	0:f2716e543d97	233	};
dudmuck	0:f2716e543d97	234	#define pow2dBm(mcmd_ladr_p1) (TXPOWLEVELS[(mcmd_ladr_p1&MCMD_LADR_POW_MASK)>>MCMD_LADR_POW_SHIFT])
dudmuck	0:f2716e543d97	235
dudmuck	0:f2716e543d97	236	#elif defined(CFG_us915) // ========================================
dudmuck	0:f2716e543d97	237
dudmuck	0:f2716e543d97	238	#define maxFrameLen(dr) ((dr)<=DR_SF11CR ? maxFrameLens[(dr)] : 0xFF)
dudmuck	0:f2716e543d97	239	//const u1_t maxFrameLens [] = { 24,66,142,255,255,255,255,255, 66,142 };
dudmuck	0:f2716e543d97	240
dudmuck	0:f2716e543d97	241	const u1_t _DR2RPS_CRC[] = {
dudmuck	0:f2716e543d97	242	ILLEGAL_RPS,
dudmuck	0:f2716e543d97	243	MAKERPS(SF10, BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	244	MAKERPS(SF9 , BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	245	MAKERPS(SF8 , BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	246	MAKERPS(SF7 , BW125, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	247	MAKERPS(SF8 , BW500, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	248	ILLEGAL_RPS ,
dudmuck	0:f2716e543d97	249	ILLEGAL_RPS ,
dudmuck	0:f2716e543d97	250	ILLEGAL_RPS ,
dudmuck	0:f2716e543d97	251	MAKERPS(SF12, BW500, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	252	MAKERPS(SF11, BW500, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	253	MAKERPS(SF10, BW500, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	254	MAKERPS(SF9 , BW500, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	255	MAKERPS(SF8 , BW500, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	256	MAKERPS(SF7 , BW500, CR_4_5, 0, 0),
dudmuck	0:f2716e543d97	257	ILLEGAL_RPS
dudmuck	0:f2716e543d97	258	};
dudmuck	0:f2716e543d97	259
dudmuck	0:f2716e543d97	260	#define pow2dBm(mcmd_ladr_p1) ((s1_t)(30 - (((mcmd_ladr_p1)&MCMD_LADR_POW_MASK)<<1)))
dudmuck	0:f2716e543d97	261
dudmuck	0:f2716e543d97	262	#endif // ================================================
dudmuck	0:f2716e543d97	263
dudmuck	0:f2716e543d97	264	static const u1_t SENSITIVITY[7][3] = {
dudmuck	0:f2716e543d97	265	// ------------bw----------
dudmuck	0:f2716e543d97	266	// 125kHz 250kHz 500kHz
dudmuck	0:f2716e543d97	267	{ 141-109, 141-109, 141-109 }, // FSK
dudmuck	0:f2716e543d97	268	{ 141-127, 141-124, 141-121 }, // SF7
dudmuck	0:f2716e543d97	269	{ 141-129, 141-126, 141-123 }, // SF8
dudmuck	0:f2716e543d97	270	{ 141-132, 141-129, 141-126 }, // SF9
dudmuck	0:f2716e543d97	271	{ 141-135, 141-132, 141-129 }, // SF10
dudmuck	0:f2716e543d97	272	{ 141-138, 141-135, 141-132 }, // SF11
dudmuck	0:f2716e543d97	273	{ 141-141, 141-138, 141-135 } // SF12
dudmuck	0:f2716e543d97	274	};
dudmuck	0:f2716e543d97	275
dudmuck	0:f2716e543d97	276	int getSensitivity (rps_t rps) {
dudmuck	0:f2716e543d97	277	return -141 + SENSITIVITY[getSf(rps)][getBw(rps)];
dudmuck	0:f2716e543d97	278	}
dudmuck	0:f2716e543d97	279
dudmuck	0:f2716e543d97	280	ostime_t calcAirTime (rps_t rps, u1_t plen) {
dudmuck	0:f2716e543d97	281	u1_t bw = getBw(rps); // 0,1,2 = 125,250,500kHz
dudmuck	0:f2716e543d97	282	u1_t sf = getSf(rps); // 0=FSK, 1..6 = SF7..12
dudmuck	0:f2716e543d97	283	if( sf == FSK ) {
dudmuck	0:f2716e543d97	284	return (plen+/preamble/5+/syncword/3+/len/1+/crc/2) * /bits/byte/8
dudmuck	0:f2716e543d97	285	* (s4_t)OSTICKS_PER_SEC / /kbit/s/50000;
dudmuck	0:f2716e543d97	286	}
dudmuck	0:f2716e543d97	287	u1_t sfx = 4*(sf+(7-SF7));
dudmuck	0:f2716e543d97	288	u1_t q = sfx - (sf >= SF11 ? 8 : 0);
dudmuck	0:f2716e543d97	289	int tmp = 8*plen - sfx + 28 + (getNocrc(rps)?0:16) - (getIh(rps)?20:0);
dudmuck	0:f2716e543d97	290	if( tmp > 0 ) {
dudmuck	0:f2716e543d97	291	tmp = (tmp + q - 1) / q;
dudmuck	0:f2716e543d97	292	tmp *= getCr(rps)+5;
dudmuck	0:f2716e543d97	293	tmp += 8;
dudmuck	0:f2716e543d97	294	} else {
dudmuck	0:f2716e543d97	295	tmp = 8;
dudmuck	0:f2716e543d97	296	}
dudmuck	0:f2716e543d97	297	tmp = (tmp<<2) + /preamble/49 /* 4 * (8 + 4.25) */;
dudmuck	0:f2716e543d97	298	// bw = 125000 = 15625 * 2^3
dudmuck	0:f2716e543d97	299	// 250000 = 15625 * 2^4
dudmuck	0:f2716e543d97	300	// 500000 = 15625 * 2^5
dudmuck	0:f2716e543d97	301	// sf = 7..12
dudmuck	0:f2716e543d97	302	//
dudmuck	0:f2716e543d97	303	// osticks = tmp * OSTICKS_PER_SEC * 1<<sf / bw
dudmuck	0:f2716e543d97	304	//
dudmuck	0:f2716e543d97	305	// 3 => counter reduced divisor 125000/8 => 15625
dudmuck	0:f2716e543d97	306	// 2 => counter 2 shift on tmp
dudmuck	0:f2716e543d97	307	sfx = sf+(7-SF7) - (3+2) - bw;
dudmuck	0:f2716e543d97	308	int div = 15625;
dudmuck	0:f2716e543d97	309	if( sfx > 4 ) {
dudmuck	0:f2716e543d97	310	// prevent 32bit signed int overflow in last step
dudmuck	0:f2716e543d97	311	div >>= sfx-4;
dudmuck	0:f2716e543d97	312	sfx = 4;
dudmuck	0:f2716e543d97	313	}
dudmuck	0:f2716e543d97	314	// Need 32bit arithmetic for this last step
dudmuck	0:f2716e543d97	315	return (((ostime_t)tmp << sfx) * OSTICKS_PER_SEC + div/2) / div;
dudmuck	0:f2716e543d97	316	}
dudmuck	0:f2716e543d97	317
dudmuck	0:f2716e543d97	318	extern inline rps_t updr2rps (dr_t dr);
dudmuck	0:f2716e543d97	319	extern inline rps_t dndr2rps (dr_t dr);
dudmuck	0:f2716e543d97	320	extern inline int isFasterDR (dr_t dr1, dr_t dr2);
dudmuck	0:f2716e543d97	321	extern inline int isSlowerDR (dr_t dr1, dr_t dr2);
dudmuck	0:f2716e543d97	322	extern inline dr_t incDR (dr_t dr);
dudmuck	0:f2716e543d97	323	extern inline dr_t decDR (dr_t dr);
dudmuck	0:f2716e543d97	324	extern inline dr_t assertDR (dr_t dr);
dudmuck	0:f2716e543d97	325	extern inline dr_t validDR (dr_t dr);
dudmuck	0:f2716e543d97	326	extern inline dr_t lowerDR (dr_t dr, u1_t n);
dudmuck	0:f2716e543d97	327
dudmuck	0:f2716e543d97	328	extern inline sf_t getSf (rps_t params);
dudmuck	0:f2716e543d97	329	extern inline rps_t setSf (rps_t params, sf_t sf);
dudmuck	0:f2716e543d97	330	extern inline bw_t getBw (rps_t params);
dudmuck	0:f2716e543d97	331	extern inline rps_t setBw (rps_t params, bw_t cr);
dudmuck	0:f2716e543d97	332	extern inline cr_t getCr (rps_t params);
dudmuck	0:f2716e543d97	333	extern inline rps_t setCr (rps_t params, cr_t cr);
dudmuck	0:f2716e543d97	334	extern inline int getNocrc (rps_t params);
dudmuck	0:f2716e543d97	335	extern inline rps_t setNocrc (rps_t params, int nocrc);
dudmuck	0:f2716e543d97	336	extern inline int getIh (rps_t params);
dudmuck	0:f2716e543d97	337	extern inline rps_t setIh (rps_t params, int ih);
dudmuck	0:f2716e543d97	338	extern inline rps_t makeRps (sf_t sf, bw_t bw, cr_t cr, int ih, int nocrc);
dudmuck	0:f2716e543d97	339	extern inline int sameSfBw (rps_t r1, rps_t r2);
dudmuck	0:f2716e543d97	340
dudmuck	0:f2716e543d97	341	// END LORA
dudmuck	0:f2716e543d97	342	// ================================================================================
dudmuck	0:f2716e543d97	343
dudmuck	0:f2716e543d97	344
dudmuck	0:f2716e543d97	345	// Adjust DR for TX retries
dudmuck	0:f2716e543d97	346	// - indexed by retry count
dudmuck	0:f2716e543d97	347	// - return steps to lower DR
dudmuck	0:f2716e543d97	348	static const u1_t DRADJUST[2+TXCONF_ATTEMPTS] = {
dudmuck	0:f2716e543d97	349	// normal frames - 1st try / no retry
dudmuck	0:f2716e543d97	350	0,
dudmuck	0:f2716e543d97	351	// confirmed frames
dudmuck	0:f2716e543d97	352	0,0,1,0,1,0,1,0,0
dudmuck	0:f2716e543d97	353	};
dudmuck	0:f2716e543d97	354
dudmuck	0:f2716e543d97	355
dudmuck	0:f2716e543d97	356	// Table below defines the size of one symbol as
dudmuck	0:f2716e543d97	357	// symtime = 256us * 2^T(sf,bw)
dudmuck	0:f2716e543d97	358	// 256us is called one symunit.
dudmuck	0:f2716e543d97	359	// SF:
dudmuck	0:f2716e543d97	360	// BW: \|__7___8___9__10__11__12
dudmuck	0:f2716e543d97	361	// 125kHz \| 2 3 4 5 6 7
dudmuck	0:f2716e543d97	362	// 250kHz \| 1 2 3 4 5 6
dudmuck	0:f2716e543d97	363	// 500kHz \| 0 1 2 3 4 5
dudmuck	0:f2716e543d97	364	//
dudmuck	0:f2716e543d97	365	// Times for half symbol per DR
dudmuck	0:f2716e543d97	366	// Per DR table to minimize rounding errors
dudmuck	0:f2716e543d97	367	static const ostime_t DR2HSYM_osticks[] = {
dudmuck	0:f2716e543d97	368	#if defined(CFG_eu868)
dudmuck	0:f2716e543d97	369	#define dr2hsym(dr) (DR2HSYM_osticks[(dr)])
dudmuck	0:f2716e543d97	370	us2osticksRound(128<<7), // DR_SF12
dudmuck	0:f2716e543d97	371	us2osticksRound(128<<6), // DR_SF11
dudmuck	0:f2716e543d97	372	us2osticksRound(128<<5), // DR_SF10
dudmuck	0:f2716e543d97	373	us2osticksRound(128<<4), // DR_SF9
dudmuck	0:f2716e543d97	374	us2osticksRound(128<<3), // DR_SF8
dudmuck	0:f2716e543d97	375	us2osticksRound(128<<2), // DR_SF7
dudmuck	0:f2716e543d97	376	us2osticksRound(128<<1), // DR_SF7B
dudmuck	0:f2716e543d97	377	us2osticksRound(80) // FSK -- not used (time for 1/2 byte)
dudmuck	0:f2716e543d97	378	#elif defined(CFG_us915)
dudmuck	0:f2716e543d97	379	#define dr2hsym(dr) (DR2HSYM_osticks[(dr)&7]) // map DR_SFnCR -> 0-6
dudmuck	0:f2716e543d97	380	us2osticksRound(128<<5), // DR_SF10 DR_SF12CR
dudmuck	0:f2716e543d97	381	us2osticksRound(128<<4), // DR_SF9 DR_SF11CR
dudmuck	0:f2716e543d97	382	us2osticksRound(128<<3), // DR_SF8 DR_SF10CR
dudmuck	0:f2716e543d97	383	us2osticksRound(128<<2), // DR_SF7 DR_SF9CR
dudmuck	0:f2716e543d97	384	us2osticksRound(128<<1), // DR_SF8C DR_SF8CR
dudmuck	0:f2716e543d97	385	us2osticksRound(128<<0) // ------ DR_SF7CR
dudmuck	0:f2716e543d97	386	#endif
dudmuck	0:f2716e543d97	387	};
dudmuck	0:f2716e543d97	388
dudmuck	0:f2716e543d97	389
dudmuck	0:f2716e543d97	390	static ostime_t calcRxWindow (u1_t secs, dr_t dr) {
dudmuck	0:f2716e543d97	391	ostime_t rxoff, err;
dudmuck	0:f2716e543d97	392	if( secs==0 ) {
dudmuck	0:f2716e543d97	393	// aka 128 secs (next becaon)
dudmuck	0:f2716e543d97	394	rxoff = LMIC.drift;
dudmuck	0:f2716e543d97	395	err = LMIC.lastDriftDiff;
dudmuck	0:f2716e543d97	396	} else {
dudmuck	0:f2716e543d97	397	// scheduled RX window within secs into current beacon period
dudmuck	0:f2716e543d97	398	rxoff = (LMIC.drift * (ostime_t)secs) >> BCN_INTV_exp;
dudmuck	0:f2716e543d97	399	err = (LMIC.lastDriftDiff * (ostime_t)secs) >> BCN_INTV_exp;
dudmuck	0:f2716e543d97	400	}
dudmuck	0:f2716e543d97	401	u1_t rxsyms = MINRX_SYMS;
dudmuck	0:f2716e543d97	402	err += (ostime_t)LMIC.maxDriftDiff * LMIC.missedBcns;
dudmuck	0:f2716e543d97	403	LMIC.rxsyms = MINRX_SYMS + (err / dr2hsym(dr));
dudmuck	0:f2716e543d97	404
dudmuck	0:f2716e543d97	405	return (rxsyms-PAMBL_SYMS) * dr2hsym(dr) + rxoff;
dudmuck	0:f2716e543d97	406	}
dudmuck	0:f2716e543d97	407
dudmuck	0:f2716e543d97	408
dudmuck	0:f2716e543d97	409	// Setup beacon RX parameters assuming we have an error of ms (aka +/-(ms/2))
dudmuck	0:f2716e543d97	410	static void calcBcnRxWindowFromMillis (u1_t ms, bit_t ini) {
dudmuck	0:f2716e543d97	411	if( ini ) {
dudmuck	0:f2716e543d97	412	LMIC.drift = 0;
dudmuck	0:f2716e543d97	413	LMIC.maxDriftDiff = 0;
dudmuck	0:f2716e543d97	414	LMIC.missedBcns = 0;
dudmuck	0:f2716e543d97	415	LMIC.bcninfo.flags \|= BCN_NODRIFT\|BCN_NODDIFF;
dudmuck	0:f2716e543d97	416	}
dudmuck	0:f2716e543d97	417	ostime_t hsym = dr2hsym(DR_BCN);
dudmuck	0:f2716e543d97	418	LMIC.bcnRxsyms = MINRX_SYMS + ms2osticksCeil(ms) / hsym;
dudmuck	0:f2716e543d97	419	LMIC.bcnRxtime = LMIC.bcninfo.txtime + BCN_INTV_osticks - (LMIC.bcnRxsyms-PAMBL_SYMS) * hsym;
dudmuck	0:f2716e543d97	420	}
dudmuck	0:f2716e543d97	421
dudmuck	0:f2716e543d97	422
dudmuck	0:f2716e543d97	423	// Setup scheduled RX window (ping/multicast slot)
dudmuck	0:f2716e543d97	424	static void rxschedInit (xref2rxsched_t rxsched) {
dudmuck	0:f2716e543d97	425	os_clearMem(AESkey,16);
dudmuck	0:f2716e543d97	426	os_clearMem(LMIC.frame+8,8);
dudmuck	0:f2716e543d97	427	os_wlsbf4(LMIC.frame, LMIC.bcninfo.time);
dudmuck	0:f2716e543d97	428	os_wlsbf4(LMIC.frame+4, LMIC.devaddr);
dudmuck	0:f2716e543d97	429	os_aes(AES_ENC,LMIC.frame,16);
dudmuck	0:f2716e543d97	430	u1_t intvExp = rxsched->intvExp;
dudmuck	0:f2716e543d97	431	ostime_t off = os_rlsbf2(LMIC.frame) & (0x0FFF >> (7 - intvExp)); // random offset (slot units)
dudmuck	0:f2716e543d97	432	rxsched->rxbase = (LMIC.bcninfo.txtime +
dudmuck	0:f2716e543d97	433	BCN_RESERVE_osticks +
dudmuck	0:f2716e543d97	434	ms2osticks(BCN_SLOT_SPAN_ms * off)); // random offset osticks
dudmuck	0:f2716e543d97	435	rxsched->slot = 0;
dudmuck	0:f2716e543d97	436	rxsched->rxtime = rxsched->rxbase - calcRxWindow(/secs BCN_RESERVE/2+(1<<intvExp),rxsched->dr);
dudmuck	0:f2716e543d97	437	rxsched->rxsyms = LMIC.rxsyms;
dudmuck	0:f2716e543d97	438	}
dudmuck	0:f2716e543d97	439
dudmuck	0:f2716e543d97	440
dudmuck	0:f2716e543d97	441	static bit_t rxschedNext (xref2rxsched_t rxsched, ostime_t cando) {
dudmuck	0:f2716e543d97	442	again:
dudmuck	0:f2716e543d97	443	if( rxsched->rxtime - cando >= 0 )
dudmuck	0:f2716e543d97	444	return 1;
dudmuck	0:f2716e543d97	445	u1_t slot;
dudmuck	0:f2716e543d97	446	if( (slot=rxsched->slot) >= 128 )
dudmuck	0:f2716e543d97	447	return 0;
dudmuck	0:f2716e543d97	448	u1_t intv = 1<<rxsched->intvExp;
dudmuck	0:f2716e543d97	449	if( (rxsched->slot = (slot += (intv))) >= 128 )
dudmuck	0:f2716e543d97	450	return 0;
dudmuck	0:f2716e543d97	451	rxsched->rxtime = rxsched->rxbase
dudmuck	0:f2716e543d97	452	+ ((BCN_WINDOW_osticks * (ostime_t)slot) >> BCN_INTV_exp)
dudmuck	0:f2716e543d97	453	- calcRxWindow(/secs BCN_RESERVE/2+slot+intv,rxsched->dr);
dudmuck	0:f2716e543d97	454	rxsched->rxsyms = LMIC.rxsyms;
dudmuck	0:f2716e543d97	455	goto again;
dudmuck	0:f2716e543d97	456	}
dudmuck	0:f2716e543d97	457
dudmuck	0:f2716e543d97	458
dudmuck	0:f2716e543d97	459	static ostime_t rndDelay (u1_t secSpan) {
dudmuck	0:f2716e543d97	460	u2_t r = os_getRndU2();
dudmuck	0:f2716e543d97	461	ostime_t delay = r;
dudmuck	0:f2716e543d97	462	if( delay > OSTICKS_PER_SEC )
dudmuck	0:f2716e543d97	463	delay = r % (u2_t)OSTICKS_PER_SEC;
dudmuck	0:f2716e543d97	464	if( secSpan > 0 )
dudmuck	0:f2716e543d97	465	delay += ((u1_t)r % secSpan) * OSTICKS_PER_SEC;
dudmuck	0:f2716e543d97	466	return delay;
dudmuck	0:f2716e543d97	467	}
dudmuck	0:f2716e543d97	468
dudmuck	0:f2716e543d97	469
dudmuck	0:f2716e543d97	470	static void txDelay (ostime_t reftime, u1_t secSpan) {
dudmuck	0:f2716e543d97	471	reftime += rndDelay(secSpan);
dudmuck	0:f2716e543d97	472	if( LMIC.globalDutyRate == 0 \|\| (reftime - LMIC.globalDutyAvail) > 0 ) {
dudmuck	0:f2716e543d97	473	LMIC.globalDutyAvail = reftime;
dudmuck	0:f2716e543d97	474	LMIC.opmode \|= OP_RNDTX;
dudmuck	0:f2716e543d97	475	}
dudmuck	0:f2716e543d97	476	}
dudmuck	0:f2716e543d97	477
dudmuck	0:f2716e543d97	478
dudmuck	0:f2716e543d97	479	static void setDrJoin (u1_t reason, u1_t dr) {
dudmuck	0:f2716e543d97	480	EV(drChange, INFO, (e_.reason = reason,
dudmuck	0:f2716e543d97	481	e_.deveui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	482	e_.dr = dr\|DR_PAGE,
dudmuck	0:f2716e543d97	483	e_.txpow = LMIC.adrTxPow,
dudmuck	0:f2716e543d97	484	e_.prevdr = LMIC.datarate\|DR_PAGE,
dudmuck	0:f2716e543d97	485	e_.prevtxpow = LMIC.adrTxPow));
dudmuck	0:f2716e543d97	486	LMIC.datarate = dr;
dudmuck	0:f2716e543d97	487	DO_DEVDB(LMIC.datarate,datarate);
dudmuck	0:f2716e543d97	488	}
dudmuck	0:f2716e543d97	489
dudmuck	0:f2716e543d97	490
dudmuck	0:f2716e543d97	491	static void setDrTxpow (u1_t reason, u1_t dr, s1_t pow) {
dudmuck	0:f2716e543d97	492	EV(drChange, INFO, (e_.reason = reason,
dudmuck	0:f2716e543d97	493	e_.deveui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	494	e_.dr = dr\|DR_PAGE,
dudmuck	0:f2716e543d97	495	e_.txpow = pow,
dudmuck	0:f2716e543d97	496	e_.prevdr = LMIC.datarate\|DR_PAGE,
dudmuck	0:f2716e543d97	497	e_.prevtxpow = LMIC.adrTxPow));
dudmuck	0:f2716e543d97	498
dudmuck	0:f2716e543d97	499	if( pow != KEEP_TXPOW )
dudmuck	0:f2716e543d97	500	LMIC.adrTxPow = pow;
dudmuck	0:f2716e543d97	501	if( LMIC.datarate != dr ) {
dudmuck	0:f2716e543d97	502	LMIC.datarate = dr;
dudmuck	0:f2716e543d97	503	DO_DEVDB(LMIC.datarate,datarate);
dudmuck	0:f2716e543d97	504	LMIC.opmode \|= OP_NEXTCHNL;
dudmuck	0:f2716e543d97	505	}
dudmuck	0:f2716e543d97	506	}
dudmuck	0:f2716e543d97	507
dudmuck	0:f2716e543d97	508
dudmuck	0:f2716e543d97	509	void LMIC_stopPingable (void) {
dudmuck	0:f2716e543d97	510	LMIC.opmode &= ~(OP_PINGABLE\|OP_PINGINI);
dudmuck	0:f2716e543d97	511	}
dudmuck	0:f2716e543d97	512
dudmuck	0:f2716e543d97	513
dudmuck	0:f2716e543d97	514	void LMIC_setPingable (u1_t intvExp) {
dudmuck	0:f2716e543d97	515	// Change setting
dudmuck	0:f2716e543d97	516	LMIC.ping.intvExp = (intvExp & 0x7);
dudmuck	0:f2716e543d97	517	LMIC.opmode \|= OP_PINGABLE;
dudmuck	0:f2716e543d97	518	// App may call LMIC_enableTracking() explicitely before
dudmuck	0:f2716e543d97	519	// Otherwise tracking is implicitly enabled here
dudmuck	0:f2716e543d97	520	if( (LMIC.opmode & (OP_TRACK\|OP_SCAN)) == 0 && LMIC.bcninfoTries == 0 )
dudmuck	0:f2716e543d97	521	LMIC_enableTracking(0);
dudmuck	0:f2716e543d97	522	}
dudmuck	0:f2716e543d97	523
dudmuck	0:f2716e543d97	524
dudmuck	0:f2716e543d97	525	#if defined(CFG_eu868)
dudmuck	0:f2716e543d97	526	// ================================================================================
dudmuck	0:f2716e543d97	527	//
dudmuck	0:f2716e543d97	528	// BEG: EU868 related stuff
dudmuck	0:f2716e543d97	529	//
dudmuck	0:f2716e543d97	530	enum { NUM_DEFAULT_CHANNELS=6 };
dudmuck	0:f2716e543d97	531	static const u4_t iniChannelFreq[12] = {
dudmuck	0:f2716e543d97	532	// Join frequencies and duty cycle limit (0.1%)
dudmuck	0:f2716e543d97	533	EU868_F1\|BAND_MILLI, EU868_J4\|BAND_MILLI,
dudmuck	0:f2716e543d97	534	EU868_F2\|BAND_MILLI, EU868_J5\|BAND_MILLI,
dudmuck	0:f2716e543d97	535	EU868_F3\|BAND_MILLI, EU868_J6\|BAND_MILLI,
dudmuck	0:f2716e543d97	536	// Default operational frequencies
dudmuck	0:f2716e543d97	537	EU868_F1\|BAND_CENTI, EU868_F2\|BAND_CENTI, EU868_F3\|BAND_CENTI,
dudmuck	0:f2716e543d97	538	EU868_F4\|BAND_MILLI, EU868_F5\|BAND_MILLI, EU868_F6\|BAND_DECI
dudmuck	0:f2716e543d97	539	};
dudmuck	0:f2716e543d97	540
dudmuck	0:f2716e543d97	541	static void initDefaultChannels (bit_t join) {
dudmuck	0:f2716e543d97	542	os_clearMem(&LMIC.channelFreq, sizeof(LMIC.channelFreq));
dudmuck	0:f2716e543d97	543	os_clearMem(&LMIC.channelDrMap, sizeof(LMIC.channelDrMap));
dudmuck	0:f2716e543d97	544	os_clearMem(&LMIC.bands, sizeof(LMIC.bands));
dudmuck	0:f2716e543d97	545
dudmuck	0:f2716e543d97	546	LMIC.channelMap = 0x3F;
dudmuck	0:f2716e543d97	547	u1_t su = join ? 0 : 6;
dudmuck	0:f2716e543d97	548	for( u1_t fu=0; fu<6; fu++,su++ ) {
dudmuck	0:f2716e543d97	549	LMIC.channelFreq[fu] = iniChannelFreq[su];
dudmuck	0:f2716e543d97	550	LMIC.channelDrMap[fu] = DR_RANGE_MAP(DR_SF12,DR_SF7);
dudmuck	0:f2716e543d97	551	}
dudmuck	0:f2716e543d97	552	if( !join ) {
dudmuck	0:f2716e543d97	553	LMIC.channelDrMap[5] = DR_RANGE_MAP(DR_SF12,DR_SF7);
dudmuck	0:f2716e543d97	554	LMIC.channelDrMap[1] = DR_RANGE_MAP(DR_SF12,DR_FSK);
dudmuck	0:f2716e543d97	555	}
dudmuck	0:f2716e543d97	556
dudmuck	0:f2716e543d97	557	LMIC.bands[BAND_MILLI].txcap = 1000; // 0.1%
dudmuck	0:f2716e543d97	558	LMIC.bands[BAND_MILLI].txpow = 14;
dudmuck	0:f2716e543d97	559	LMIC.bands[BAND_MILLI].lastchnl = os_getRndU1() % MAX_CHANNELS;
dudmuck	0:f2716e543d97	560	LMIC.bands[BAND_CENTI].txcap = 100; // 1%
dudmuck	0:f2716e543d97	561	LMIC.bands[BAND_CENTI].txpow = 14;
dudmuck	0:f2716e543d97	562	LMIC.bands[BAND_CENTI].lastchnl = os_getRndU1() % MAX_CHANNELS;
dudmuck	0:f2716e543d97	563	LMIC.bands[BAND_DECI ].txcap = 10; // 10%
dudmuck	0:f2716e543d97	564	LMIC.bands[BAND_DECI ].txpow = 27;
dudmuck	0:f2716e543d97	565	LMIC.bands[BAND_CENTI].lastchnl = os_getRndU1() % MAX_CHANNELS;
dudmuck	0:f2716e543d97	566	LMIC.bands[BAND_MILLI].avail =
dudmuck	0:f2716e543d97	567	LMIC.bands[BAND_CENTI].avail =
dudmuck	0:f2716e543d97	568	LMIC.bands[BAND_DECI ].avail = os_getTime();
dudmuck	0:f2716e543d97	569	}
dudmuck	0:f2716e543d97	570
dudmuck	0:f2716e543d97	571	bit_t LMIC_setupBand (u1_t bandidx, s1_t txpow, u2_t txcap) {
dudmuck	0:f2716e543d97	572	if( bandidx > BAND_AUX ) return 0;
dudmuck	0:f2716e543d97	573	band_t* b = &LMIC.bands[bandidx];
dudmuck	0:f2716e543d97	574	b->txpow = txpow;
dudmuck	0:f2716e543d97	575	b->txcap = txcap;
dudmuck	0:f2716e543d97	576	b->avail = os_getTime();
dudmuck	0:f2716e543d97	577	b->lastchnl = os_getRndU1() % MAX_CHANNELS;
dudmuck	0:f2716e543d97	578	return 1;
dudmuck	0:f2716e543d97	579	}
dudmuck	0:f2716e543d97	580
dudmuck	0:f2716e543d97	581	bit_t LMIC_setupChannel (u1_t chidx, u4_t freq, u2_t drmap, s1_t band) {
dudmuck	0:f2716e543d97	582	if( chidx >= MAX_CHANNELS )
dudmuck	0:f2716e543d97	583	return 0;
dudmuck	0:f2716e543d97	584	if( band == -1 ) {
dudmuck	0:f2716e543d97	585	if( freq >= 869400000 && freq <= 869650000 )
dudmuck	0:f2716e543d97	586	freq \|= BAND_DECI; // 10% 27dBm
dudmuck	0:f2716e543d97	587	else if( (freq >= 868000000 && freq <= 868600000) \|\|
dudmuck	0:f2716e543d97	588	(freq >= 869700000 && freq <= 870000000) )
dudmuck	0:f2716e543d97	589	freq \|= BAND_CENTI; // 1% 14dBm
dudmuck	0:f2716e543d97	590	else
dudmuck	0:f2716e543d97	591	freq \|= BAND_MILLI; // 0.1% 14dBm
dudmuck	0:f2716e543d97	592	} else {
dudmuck	0:f2716e543d97	593	if( band > BAND_AUX ) return 0;
dudmuck	0:f2716e543d97	594	freq = (freq&~3) \| band;
dudmuck	0:f2716e543d97	595	}
dudmuck	0:f2716e543d97	596	LMIC.channelFreq [chidx] = freq;
dudmuck	0:f2716e543d97	597	LMIC.channelDrMap[chidx] = drmap==0 ? DR_RANGE_MAP(DR_SF12,DR_SF7) : drmap;
dudmuck	0:f2716e543d97	598	LMIC.channelMap \|= 1<<chidx; // enabled right away
dudmuck	0:f2716e543d97	599	return 1;
dudmuck	0:f2716e543d97	600	}
dudmuck	0:f2716e543d97	601
dudmuck	0:f2716e543d97	602	void LMIC_disableChannel (u1_t channel) {
dudmuck	0:f2716e543d97	603	LMIC.channelFreq[channel] = 0;
dudmuck	0:f2716e543d97	604	LMIC.channelDrMap[channel] = 0;
dudmuck	0:f2716e543d97	605	LMIC.channelMap &= ~(1<<channel);
dudmuck	0:f2716e543d97	606	}
dudmuck	0:f2716e543d97	607
dudmuck	0:f2716e543d97	608	static u4_t convFreq (xref2u1_t ptr) {
dudmuck	0:f2716e543d97	609	u4_t freq = (os_rlsbf4(ptr-1) >> 8) * 100;
dudmuck	0:f2716e543d97	610	if( freq < EU868_FREQ_MIN \|\| freq > EU868_FREQ_MAX )
dudmuck	0:f2716e543d97	611	freq = 0;
dudmuck	0:f2716e543d97	612	return freq;
dudmuck	0:f2716e543d97	613	}
dudmuck	0:f2716e543d97	614
dudmuck	0:f2716e543d97	615	static u1_t mapChannels (u1_t chpage, u2_t chmap) {
dudmuck	0:f2716e543d97	616	// Bad page, disable all channel, enable non-existent
dudmuck	0:f2716e543d97	617	if( chpage != 0 \|\| chmap==0 \|\| (chmap & ~LMIC.channelMap) != 0 )
dudmuck	0:f2716e543d97	618	return 0; // illegal input
dudmuck	0:f2716e543d97	619	for( u1_t chnl=0; chnl<MAX_CHANNELS; chnl++ ) {
dudmuck	0:f2716e543d97	620	if( (chmap & (1<<chnl)) != 0 && LMIC.channelFreq[chnl] == 0 )
dudmuck	0:f2716e543d97	621	chmap &= ~(1<<chnl); // ignore - channel is not defined
dudmuck	0:f2716e543d97	622	}
dudmuck	0:f2716e543d97	623	LMIC.channelMap = chmap;
dudmuck	0:f2716e543d97	624	return 1;
dudmuck	0:f2716e543d97	625	}
dudmuck	0:f2716e543d97	626
dudmuck	0:f2716e543d97	627
dudmuck	0:f2716e543d97	628	static void updateTx (ostime_t txbeg) {
dudmuck	0:f2716e543d97	629	u4_t freq = LMIC.channelFreq[LMIC.txChnl];
dudmuck	0:f2716e543d97	630	// Update global/band specific duty cycle stats
dudmuck	0:f2716e543d97	631	ostime_t airtime = calcAirTime(LMIC.rps, LMIC.dataLen);
dudmuck	0:f2716e543d97	632	// Update channel/global duty cycle stats
dudmuck	0:f2716e543d97	633	xref2band_t band = &LMIC.bands[freq & 0x3];
dudmuck	0:f2716e543d97	634	LMIC.freq = freq & ~(u4_t)3;
dudmuck	0:f2716e543d97	635	LMIC.txpow = band->txpow;
dudmuck	0:f2716e543d97	636	band->avail = txbeg + airtime * band->txcap;
dudmuck	0:f2716e543d97	637	if( LMIC.globalDutyRate != 0 )
dudmuck	0:f2716e543d97	638	LMIC.globalDutyAvail = txbeg + (airtime<<LMIC.globalDutyRate);
dudmuck	0:f2716e543d97	639	}
dudmuck	0:f2716e543d97	640
dudmuck	0:f2716e543d97	641	static ostime_t nextTx (ostime_t now) {
dudmuck	0:f2716e543d97	642	u1_t bmap=0xF;
dudmuck	0:f2716e543d97	643	do {
dudmuck	0:f2716e543d97	644	ostime_t mintime = now + /10h/36000*OSTICKS_PER_SEC;
dudmuck	0:f2716e543d97	645	u1_t band=0;
dudmuck	0:f2716e543d97	646	for( u1_t bi=0; bi<4; bi++ ) {
dudmuck	0:f2716e543d97	647	if( (bmap & (1<<bi)) && mintime - LMIC.bands[bi].avail > 0 )
dudmuck	0:f2716e543d97	648	mintime = LMIC.bands[band = bi].avail;
dudmuck	0:f2716e543d97	649	}
dudmuck	0:f2716e543d97	650	// Find next channel in given band
dudmuck	0:f2716e543d97	651	u1_t chnl = LMIC.bands[band].lastchnl;
dudmuck	0:f2716e543d97	652	for( u1_t ci=0; ci<MAX_CHANNELS; ci++ ) {
dudmuck	0:f2716e543d97	653	if( (chnl = (chnl+1)) >= MAX_CHANNELS )
dudmuck	0:f2716e543d97	654	chnl -= MAX_CHANNELS;
dudmuck	0:f2716e543d97	655	if( (LMIC.channelMap & (1<<chnl)) != 0 && // channel enabled
dudmuck	0:f2716e543d97	656	(LMIC.channelDrMap[chnl] & (1<<(LMIC.datarate&0xF))) != 0 &&
dudmuck	0:f2716e543d97	657	band == (LMIC.channelFreq[chnl] & 0x3) ) { // in selected band
dudmuck	0:f2716e543d97	658	LMIC.txChnl = LMIC.bands[band].lastchnl = chnl;
dudmuck	0:f2716e543d97	659	return mintime;
dudmuck	0:f2716e543d97	660	}
dudmuck	0:f2716e543d97	661	}
dudmuck	0:f2716e543d97	662	if( (bmap &= ~(1<<band)) == 0 ) {
dudmuck	0:f2716e543d97	663	// No feasible channel found!
dudmuck	0:f2716e543d97	664	return mintime;
dudmuck	0:f2716e543d97	665	}
dudmuck	0:f2716e543d97	666	} while(1);
dudmuck	0:f2716e543d97	667	}
dudmuck	0:f2716e543d97	668
dudmuck	0:f2716e543d97	669
dudmuck	0:f2716e543d97	670	static void setBcnRxParams (void) {
dudmuck	0:f2716e543d97	671	LMIC.dataLen = 0;
dudmuck	0:f2716e543d97	672	LMIC.freq = LMIC.channelFreq[LMIC.bcnChnl] & ~(u4_t)3;
dudmuck	0:f2716e543d97	673	LMIC.rps = setIh(setNocrc(dndr2rps((dr_t)DR_BCN),1),LEN_BCN);
dudmuck	0:f2716e543d97	674	}
dudmuck	0:f2716e543d97	675
dudmuck	0:f2716e543d97	676	#define setRx1Params() /LMIC.freq/rps remain unchanged/
dudmuck	0:f2716e543d97	677
dudmuck	0:f2716e543d97	678	static void initJoinLoop (void) {
dudmuck	0:f2716e543d97	679	LMIC.txChnl = os_getRndU1() % 6;
dudmuck	0:f2716e543d97	680	LMIC.adrTxPow = 14;
dudmuck	0:f2716e543d97	681	setDrJoin(DRCHG_SET, DR_SF7);
dudmuck	0:f2716e543d97	682	initDefaultChannels(1);
dudmuck	0:f2716e543d97	683	ASSERT((LMIC.opmode & OP_NEXTCHNL)==0);
dudmuck	0:f2716e543d97	684	LMIC.txend = LMIC.bands[BAND_MILLI].avail + rndDelay(8);
dudmuck	0:f2716e543d97	685	}
dudmuck	0:f2716e543d97	686
dudmuck	0:f2716e543d97	687
dudmuck	0:f2716e543d97	688	static ostime_t nextJoinState (void) {
dudmuck	0:f2716e543d97	689	u1_t failed = 0;
dudmuck	0:f2716e543d97	690
dudmuck	0:f2716e543d97	691	// Try 869.x and then 864.x with same DR
dudmuck	0:f2716e543d97	692	// If both fail try next lower datarate
dudmuck	0:f2716e543d97	693	if( ++LMIC.txChnl == 6 )
dudmuck	0:f2716e543d97	694	LMIC.txChnl = 0;
dudmuck	0:f2716e543d97	695	if( (++LMIC.txCnt & 1) == 0 ) {
dudmuck	0:f2716e543d97	696	// Lower DR every 2nd try (having tried 868.x and 864.x with the same DR)
dudmuck	0:f2716e543d97	697	if( LMIC.datarate == DR_SF12 )
dudmuck	0:f2716e543d97	698	failed = 1; // we have tried all DR - signal EV_JOIN_FAILED
dudmuck	0:f2716e543d97	699	else
dudmuck	0:f2716e543d97	700	setDrJoin(DRCHG_NOJACC, decDR((dr_t)LMIC.datarate));
dudmuck	0:f2716e543d97	701	}
dudmuck	0:f2716e543d97	702	// Clear NEXTCHNL because join state engine controls channel hopping
dudmuck	0:f2716e543d97	703	LMIC.opmode &= ~OP_NEXTCHNL;
dudmuck	0:f2716e543d97	704	// Move txend to randomize synchronized concurrent joins.
dudmuck	0:f2716e543d97	705	// Duty cycle is based on txend.
dudmuck	0:f2716e543d97	706	ostime_t time = os_getTime();
dudmuck	0:f2716e543d97	707	if( time - LMIC.bands[BAND_MILLI].avail < 0 )
dudmuck	0:f2716e543d97	708	time = LMIC.bands[BAND_MILLI].avail;
dudmuck	0:f2716e543d97	709	LMIC.txend = time +
dudmuck	0:f2716e543d97	710	(isTESTMODE()
dudmuck	0:f2716e543d97	711	// Avoid collision with JOIN ACCEPT @ SF12 being sent by GW (but we missed it)
dudmuck	0:f2716e543d97	712	? DNW2_SAFETY_ZONE
dudmuck	0:f2716e543d97	713	// Otherwise: randomize join (street lamp case):
dudmuck	0:f2716e543d97	714	// SF12:255, SF11:127, .., SF7:8secs
dudmuck	0:f2716e543d97	715	: DNW2_SAFETY_ZONE+rndDelay(255>>LMIC.datarate));
dudmuck	0:f2716e543d97	716	// 1 - triggers EV_JOIN_FAILED event
dudmuck	0:f2716e543d97	717	return failed;
dudmuck	0:f2716e543d97	718	}
dudmuck	0:f2716e543d97	719
dudmuck	0:f2716e543d97	720	//
dudmuck	0:f2716e543d97	721	// END: EU868 related stuff
dudmuck	0:f2716e543d97	722	//
dudmuck	0:f2716e543d97	723	// ================================================================================
dudmuck	0:f2716e543d97	724	#elif defined(CFG_us915)
dudmuck	0:f2716e543d97	725	// ================================================================================
dudmuck	0:f2716e543d97	726	//
dudmuck	0:f2716e543d97	727	// BEG: US915 related stuff
dudmuck	0:f2716e543d97	728	//
dudmuck	0:f2716e543d97	729
dudmuck	0:f2716e543d97	730
dudmuck	5:e4ba433f0ac1	731	static void initDefaultChannels (void)
dudmuck	5:e4ba433f0ac1	732	{
dudmuck	5:e4ba433f0ac1	733	#ifdef CHNL_HYBRID
dudmuck	5:e4ba433f0ac1	734	LMIC.channelMap[0] = 0xFF;
dudmuck	5:e4ba433f0ac1	735	LMIC.channelMap[1] = 0x0;
dudmuck	5:e4ba433f0ac1	736	LMIC.channelMap[2] = 0x0;
dudmuck	5:e4ba433f0ac1	737	LMIC.channelMap[3] = 0x0;
dudmuck	5:e4ba433f0ac1	738	LMIC.channelMap[4] = 0x01;
dudmuck	5:e4ba433f0ac1	739	LMIC.txpow_limit = 20;
dudmuck	5:e4ba433f0ac1	740	#else
dudmuck	0:f2716e543d97	741	for( u1_t i=0; i<4; i++ )
dudmuck	0:f2716e543d97	742	LMIC.channelMap[i] = 0xFFFF;
dudmuck	0:f2716e543d97	743	LMIC.channelMap[4] = 0x00FF;
dudmuck	5:e4ba433f0ac1	744
dudmuck	5:e4ba433f0ac1	745	LMIC.txpow_limit = 30;
dudmuck	5:e4ba433f0ac1	746	#endif
dudmuck	0:f2716e543d97	747	}
dudmuck	0:f2716e543d97	748
dudmuck	0:f2716e543d97	749	static u4_t convFreq (xref2u1_t ptr) {
dudmuck	0:f2716e543d97	750	u4_t freq = (os_rlsbf4(ptr-1) >> 8) * 100;
dudmuck	0:f2716e543d97	751	if( freq < US915_FREQ_MIN \|\| freq > US915_FREQ_MAX )
dudmuck	0:f2716e543d97	752	freq = 0;
dudmuck	0:f2716e543d97	753	return freq;
dudmuck	0:f2716e543d97	754	}
dudmuck	0:f2716e543d97	755
dudmuck	0:f2716e543d97	756	bit_t LMIC_setupChannel (u1_t chidx, u4_t freq, u2_t drmap, s1_t band) {
dudmuck	0:f2716e543d97	757	if( chidx < 72 \|\| chidx >= 72+MAX_XCHANNELS )
dudmuck	0:f2716e543d97	758	return 0; // channels 0..71 are hardwired
dudmuck	0:f2716e543d97	759	chidx -= 72;
dudmuck	0:f2716e543d97	760	LMIC.xchFreq[chidx] = freq;
dudmuck	0:f2716e543d97	761	LMIC.xchDrMap[chidx] = drmap==0 ? DR_RANGE_MAP(DR_SF10,DR_SF8C) : drmap;
dudmuck	0:f2716e543d97	762	LMIC.channelMap[chidx>>4] \|= (1<<(chidx&0xF));
dudmuck	0:f2716e543d97	763	return 1;
dudmuck	0:f2716e543d97	764	}
dudmuck	0:f2716e543d97	765
dudmuck	0:f2716e543d97	766	void LMIC_disableChannel (u1_t channel) {
dudmuck	0:f2716e543d97	767	if( channel < 72+MAX_XCHANNELS )
dudmuck	0:f2716e543d97	768	LMIC.channelMap[channel/4] &= ~(1<<(channel&0xF));
dudmuck	0:f2716e543d97	769	}
dudmuck	0:f2716e543d97	770
dudmuck	0:f2716e543d97	771	static u1_t mapChannels (u1_t chpage, u2_t chmap) {
dudmuck	0:f2716e543d97	772	if( chpage == MCMD_LADR_CHP_125ON \|\| chpage == MCMD_LADR_CHP_125OFF ) {
dudmuck	0:f2716e543d97	773	u2_t en125 = chpage == MCMD_LADR_CHP_125ON ? 0xFFFF : 0x0000;
dudmuck	0:f2716e543d97	774	for( u1_t u=0; u<4; u++ )
dudmuck	0:f2716e543d97	775	LMIC.channelMap[u] = en125;
dudmuck	0:f2716e543d97	776	LMIC.channelMap[64/16] = chmap;
dudmuck	0:f2716e543d97	777	} else {
dudmuck	0:f2716e543d97	778	if( chpage >= (72+MAX_XCHANNELS+15)/16 )
dudmuck	0:f2716e543d97	779	return 0;
dudmuck	0:f2716e543d97	780	LMIC.channelMap[chpage] = chmap;
dudmuck	0:f2716e543d97	781	}
dudmuck	0:f2716e543d97	782	return 1;
dudmuck	0:f2716e543d97	783	}
dudmuck	0:f2716e543d97	784
dudmuck	0:f2716e543d97	785	static void updateTx (ostime_t txbeg) {
dudmuck	0:f2716e543d97	786	u1_t chnl = LMIC.txChnl;
dudmuck	0:f2716e543d97	787	if( chnl < 64 ) {
dudmuck	0:f2716e543d97	788	LMIC.freq = US915_125kHz_UPFBASE + chnl*US915_125kHz_UPFSTEP;
dudmuck	5:e4ba433f0ac1	789	LMIC.txpow = LMIC.txpow_limit;
dudmuck	0:f2716e543d97	790	return;
dudmuck	0:f2716e543d97	791	}
dudmuck	5:e4ba433f0ac1	792
dudmuck	5:e4ba433f0ac1	793	if (LMIC.txpow_limit >= 26)
dudmuck	5:e4ba433f0ac1	794	LMIC.txpow = 26;
dudmuck	5:e4ba433f0ac1	795	else
dudmuck	5:e4ba433f0ac1	796	LMIC.txpow = LMIC.txpow_limit;
dudmuck	5:e4ba433f0ac1	797
dudmuck	0:f2716e543d97	798	if( chnl < 64+8 ) {
dudmuck	0:f2716e543d97	799	LMIC.freq = US915_500kHz_UPFBASE + (chnl-64)*US915_500kHz_UPFSTEP;
dudmuck	0:f2716e543d97	800	} else {
dudmuck	0:f2716e543d97	801	ASSERT(chnl < 64+8+MAX_XCHANNELS);
dudmuck	0:f2716e543d97	802	LMIC.freq = LMIC.xchFreq[chnl-72];
dudmuck	0:f2716e543d97	803	}
dudmuck	0:f2716e543d97	804
dudmuck	0:f2716e543d97	805	// Update global duty cycle stats
dudmuck	0:f2716e543d97	806	if( LMIC.globalDutyRate != 0 ) {
dudmuck	0:f2716e543d97	807	ostime_t airtime = calcAirTime(LMIC.rps, LMIC.dataLen);
dudmuck	0:f2716e543d97	808	LMIC.globalDutyAvail = txbeg + (airtime<<LMIC.globalDutyRate);
dudmuck	0:f2716e543d97	809	}
dudmuck	0:f2716e543d97	810	}
dudmuck	0:f2716e543d97	811
dudmuck	0:f2716e543d97	812	// US does not have duty cycling - return now as earliest TX time
dudmuck	0:f2716e543d97	813	#define nextTx(now) (_nextTx(),(now))
dudmuck	0:f2716e543d97	814	static void _nextTx (void) {
dudmuck	0:f2716e543d97	815	if( LMIC.chRnd==0 )
dudmuck	0:f2716e543d97	816	LMIC.chRnd = os_getRndU1() & 0x3F;
dudmuck	0:f2716e543d97	817	if( LMIC.datarate >= DR_SF8C ) { // 500kHz
dudmuck	0:f2716e543d97	818	u1_t map = LMIC.channelMap[64/16]&0xFF;
dudmuck	0:f2716e543d97	819	for( u1_t i=0; i<8; i++ ) {
dudmuck	0:f2716e543d97	820	if( (map & (1<<(++LMIC.chRnd & 7))) != 0 ) {
dudmuck	0:f2716e543d97	821	LMIC.txChnl = 64 + (LMIC.chRnd & 7);
dudmuck	0:f2716e543d97	822	return;
dudmuck	0:f2716e543d97	823	}
dudmuck	0:f2716e543d97	824	}
dudmuck	0:f2716e543d97	825	} else { // 125kHz
dudmuck	0:f2716e543d97	826	for( u1_t i=0; i<64; i++ ) {
dudmuck	0:f2716e543d97	827	u1_t chnl = ++LMIC.chRnd & 0x3F;
dudmuck	0:f2716e543d97	828	if( (LMIC.channelMap[(chnl >> 4)] & (1<<(chnl & 0xF))) != 0 ) {
dudmuck	0:f2716e543d97	829	LMIC.txChnl = chnl;
dudmuck	0:f2716e543d97	830	return;
dudmuck	0:f2716e543d97	831	}
dudmuck	0:f2716e543d97	832	}
dudmuck	0:f2716e543d97	833	}
dudmuck	0:f2716e543d97	834	// No feasible channel found! Keep old one.
dudmuck	0:f2716e543d97	835	}
dudmuck	0:f2716e543d97	836
dudmuck	0:f2716e543d97	837	static void setBcnRxParams (void) {
dudmuck	0:f2716e543d97	838	LMIC.dataLen = 0;
dudmuck	0:f2716e543d97	839	LMIC.freq = US915_500kHz_DNFBASE + LMIC.bcnChnl * US915_500kHz_DNFSTEP;
dudmuck	0:f2716e543d97	840	LMIC.rps = setIh(setNocrc(dndr2rps((dr_t)DR_BCN),1),LEN_BCN);
dudmuck	0:f2716e543d97	841	}
dudmuck	0:f2716e543d97	842
dudmuck	0:f2716e543d97	843	#define setRx1Params() { \
dudmuck	0:f2716e543d97	844	LMIC.freq = US915_500kHz_DNFBASE + (LMIC.txChnl & 0x7) * US915_500kHz_DNFSTEP; \
dudmuck	0:f2716e543d97	845	if( /* TX datarate */LMIC.dndr < DR_SF8C ) \
dudmuck	0:f2716e543d97	846	LMIC.dndr += DR_SF10CR - DR_SF10; \
dudmuck	0:f2716e543d97	847	else if( LMIC.dndr == DR_SF8C ) \
dudmuck	0:f2716e543d97	848	LMIC.dndr = DR_SF7CR; \
dudmuck	0:f2716e543d97	849	LMIC.rps = dndr2rps(LMIC.dndr); \
dudmuck	0:f2716e543d97	850	}
dudmuck	0:f2716e543d97	851
dudmuck	0:f2716e543d97	852	static void initJoinLoop (void) {
dudmuck	0:f2716e543d97	853	LMIC.chRnd = 0;
dudmuck	0:f2716e543d97	854	LMIC.txChnl = 0;
dudmuck	0:f2716e543d97	855	LMIC.adrTxPow = 20;
dudmuck	0:f2716e543d97	856	ASSERT((LMIC.opmode & OP_NEXTCHNL)==0);
dudmuck	0:f2716e543d97	857	LMIC.txend = os_getTime();
dudmuck	0:f2716e543d97	858	setDrJoin(DRCHG_SET, DR_SF7);
dudmuck	0:f2716e543d97	859	}
dudmuck	0:f2716e543d97	860
dudmuck	0:f2716e543d97	861	static ostime_t nextJoinState (void) {
dudmuck	0:f2716e543d97	862	// Try the following:
dudmuck	0:f2716e543d97	863	// SF7/8/9/10 on a random channel 0..63
dudmuck	0:f2716e543d97	864	// SF8C on a random channel 64..71
dudmuck	0:f2716e543d97	865	//
dudmuck	0:f2716e543d97	866	u1_t failed = 0;
dudmuck	0:f2716e543d97	867	if( LMIC.datarate != DR_SF8C ) {
dudmuck	0:f2716e543d97	868	LMIC.txChnl = 64+(LMIC.txChnl&7);
dudmuck	0:f2716e543d97	869	setDrJoin(DRCHG_SET, DR_SF8C);
dudmuck	0:f2716e543d97	870	} else {
dudmuck	0:f2716e543d97	871	LMIC.txChnl = os_getRndU1() & 0x3F;
dudmuck	0:f2716e543d97	872	s1_t dr = DR_SF7 - ++LMIC.txCnt;
dudmuck	0:f2716e543d97	873	if( dr < DR_SF10 ) {
dudmuck	0:f2716e543d97	874	dr = DR_SF10;
dudmuck	0:f2716e543d97	875	failed = 1; // All DR exhausted - signal failed
dudmuck	0:f2716e543d97	876	}
dudmuck	0:f2716e543d97	877	setDrJoin(DRCHG_SET, dr);
dudmuck	0:f2716e543d97	878	}
dudmuck	0:f2716e543d97	879	LMIC.opmode &= ~OP_NEXTCHNL;
dudmuck	0:f2716e543d97	880	LMIC.txend = os_getTime() +
dudmuck	0:f2716e543d97	881	(isTESTMODE()
dudmuck	0:f2716e543d97	882	// Avoid collision with JOIN ACCEPT being sent by GW (but we missed it - GW is still busy)
dudmuck	0:f2716e543d97	883	? DNW2_SAFETY_ZONE
dudmuck	0:f2716e543d97	884	// Otherwise: randomize join (street lamp case):
dudmuck	0:f2716e543d97	885	// SF10:16, SF9=8,..SF8C:1secs
dudmuck	0:f2716e543d97	886	: rndDelay(16>>LMIC.datarate));
dudmuck	0:f2716e543d97	887	// 1 - triggers EV_JOIN_FAILED event
dudmuck	0:f2716e543d97	888	return failed;
dudmuck	0:f2716e543d97	889	}
dudmuck	0:f2716e543d97	890
dudmuck	0:f2716e543d97	891	//
dudmuck	0:f2716e543d97	892	// END: US915 related stuff
dudmuck	0:f2716e543d97	893	//
dudmuck	0:f2716e543d97	894	// ================================================================================
dudmuck	0:f2716e543d97	895	#else
dudmuck	0:f2716e543d97	896	#error Unsupported frequency band!
dudmuck	0:f2716e543d97	897	#endif
dudmuck	0:f2716e543d97	898
dudmuck	0:f2716e543d97	899
dudmuck	0:f2716e543d97	900	static void runEngineUpdate (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	901	engineUpdate();
dudmuck	0:f2716e543d97	902	}
dudmuck	0:f2716e543d97	903
dudmuck	0:f2716e543d97	904
dudmuck	0:f2716e543d97	905	static void reportEvent (ev_t ev) {
dudmuck	0:f2716e543d97	906	EV(devCond, INFO, (e_.reason = EV::devCond_t::LMIC_EV,
dudmuck	0:f2716e543d97	907	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	908	e_.info = ev));
dudmuck	0:f2716e543d97	909	ON_LMIC_EVENT(ev);
dudmuck	0:f2716e543d97	910	engineUpdate();
dudmuck	0:f2716e543d97	911	}
dudmuck	0:f2716e543d97	912
dudmuck	0:f2716e543d97	913
dudmuck	0:f2716e543d97	914	static void runReset (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	915	// Disable session
dudmuck	0:f2716e543d97	916	LMIC_reset();
dudmuck	0:f2716e543d97	917	LMIC_startJoining();
dudmuck	0:f2716e543d97	918	reportEvent(EV_RESET);
dudmuck	0:f2716e543d97	919	}
dudmuck	0:f2716e543d97	920
dudmuck	0:f2716e543d97	921	static void stateJustJoined (void) {
dudmuck	0:f2716e543d97	922	LMIC.seqnoDn = LMIC.seqnoUp = 0;
dudmuck	0:f2716e543d97	923	LMIC.rejoinCnt = 0;
dudmuck	0:f2716e543d97	924	LMIC.dnConf = LMIC.adrChanged = LMIC.ladrAns = LMIC.devsAns = 0;
dudmuck	0:f2716e543d97	925	LMIC.moreData = LMIC.dn2Ans = LMIC.snchAns = LMIC.dutyCapAns = 0;
dudmuck	0:f2716e543d97	926	LMIC.pingSetAns = 0;
dudmuck	0:f2716e543d97	927	LMIC.upRepeat = 0;
dudmuck	0:f2716e543d97	928	LMIC.adrAckReq = LINK_CHECK_INIT;
dudmuck	0:f2716e543d97	929	LMIC.dn2Dr = DR_DNW2;
dudmuck	0:f2716e543d97	930	LMIC.dn2Freq = FREQ_DNW2;
dudmuck	0:f2716e543d97	931	LMIC.bcnChnl = CHNL_BCN;
dudmuck	0:f2716e543d97	932	LMIC.ping.freq = FREQ_PING;
dudmuck	0:f2716e543d97	933	LMIC.ping.dr = DR_PING;
dudmuck	0:f2716e543d97	934	}
dudmuck	0:f2716e543d97	935
dudmuck	0:f2716e543d97	936
dudmuck	0:f2716e543d97	937	// ================================================================================
dudmuck	0:f2716e543d97	938	// Decoding frames
dudmuck	0:f2716e543d97	939
dudmuck	0:f2716e543d97	940
dudmuck	0:f2716e543d97	941	// Decode beacon - do not overwrite bcninfo unless we have a match!
dudmuck	0:f2716e543d97	942	static int decodeBeacon (void) {
dudmuck	0:f2716e543d97	943	ASSERT(LMIC.dataLen == LEN_BCN); // implicit header RX guarantees this
dudmuck	0:f2716e543d97	944	xref2u1_t d = LMIC.frame;
dudmuck	0:f2716e543d97	945	if(
dudmuck	0:f2716e543d97	946	#ifdef CFG_eu868
dudmuck	0:f2716e543d97	947	d[OFF_BCN_CRC1] != (u1_t)os_crc16(d,OFF_BCN_CRC1)
dudmuck	0:f2716e543d97	948	#elif defined(CFG_us915)
dudmuck	0:f2716e543d97	949	os_rlsbf2(&d[OFF_BCN_CRC1]) != os_crc16(d,OFF_BCN_CRC1)
dudmuck	0:f2716e543d97	950	#endif
dudmuck	0:f2716e543d97	951	)
dudmuck	0:f2716e543d97	952	return 0; // first (common) part fails CRC check
dudmuck	0:f2716e543d97	953	// First set of fields is ok
dudmuck	0:f2716e543d97	954	u4_t bcnnetid = os_rlsbf4(&d[OFF_BCN_NETID]) & 0xFFFFFF;
dudmuck	0:f2716e543d97	955	if( bcnnetid != LMIC.netid )
dudmuck	0:f2716e543d97	956	return -1; // not the beacon we're looking for
dudmuck	0:f2716e543d97	957
dudmuck	0:f2716e543d97	958	LMIC.bcninfo.flags &= ~(BCN_PARTIAL\|BCN_FULL);
dudmuck	0:f2716e543d97	959	// Match - update bcninfo structure
dudmuck	0:f2716e543d97	960	LMIC.bcninfo.snr = LMIC.snr;
dudmuck	0:f2716e543d97	961	LMIC.bcninfo.rssi = LMIC.rssi;
dudmuck	0:f2716e543d97	962	LMIC.bcninfo.txtime = LMIC.rxtime - AIRTIME_BCN_osticks;
dudmuck	0:f2716e543d97	963	LMIC.bcninfo.time = os_rlsbf4(&d[OFF_BCN_TIME]);
dudmuck	0:f2716e543d97	964	LMIC.bcninfo.flags \|= BCN_PARTIAL;
dudmuck	0:f2716e543d97	965
dudmuck	0:f2716e543d97	966	// Check 2nd set
dudmuck	0:f2716e543d97	967	if( os_rlsbf2(&d[OFF_BCN_CRC2]) != os_crc16(d,OFF_BCN_CRC2) )
dudmuck	0:f2716e543d97	968	return 1;
dudmuck	0:f2716e543d97	969	// Second set of fields is ok
dudmuck	0:f2716e543d97	970	LMIC.bcninfo.lat = (s4_t)os_rlsbf4(&d[OFF_BCN_LAT-1]) >> 8; // read as signed 24-bit
dudmuck	0:f2716e543d97	971	LMIC.bcninfo.lon = (s4_t)os_rlsbf4(&d[OFF_BCN_LON-1]) >> 8; // ditto
dudmuck	0:f2716e543d97	972	LMIC.bcninfo.info = d[OFF_BCN_INFO];
dudmuck	0:f2716e543d97	973	LMIC.bcninfo.flags \|= BCN_FULL;
dudmuck	0:f2716e543d97	974	return 2;
dudmuck	0:f2716e543d97	975	}
dudmuck	0:f2716e543d97	976
dudmuck	0:f2716e543d97	977
dudmuck	0:f2716e543d97	978	static bit_t decodeFrame (void) {
dudmuck	0:f2716e543d97	979	xref2u1_t d = LMIC.frame;
dudmuck	0:f2716e543d97	980	u1_t hdr = d[0];
dudmuck	0:f2716e543d97	981	u1_t ftype = hdr & HDR_FTYPE;
dudmuck	0:f2716e543d97	982	int dlen = LMIC.dataLen;
dudmuck	0:f2716e543d97	983	if( dlen < OFF_DAT_OPTS+4 \|\|
dudmuck	0:f2716e543d97	984	(hdr & HDR_MAJOR) != HDR_MAJOR_V1 \|\|
dudmuck	0:f2716e543d97	985	(ftype != HDR_FTYPE_DADN && ftype != HDR_FTYPE_DCDN) ) {
dudmuck	0:f2716e543d97	986	// Basic sanity checks failed
dudmuck	0:f2716e543d97	987	EV(specCond, WARN, (e_.reason = EV::specCond_t::UNEXPECTED_FRAME,
dudmuck	0:f2716e543d97	988	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	989	e_.info = dlen < 4 ? 0 : os_rlsbf4(&d[dlen-4]),
dudmuck	0:f2716e543d97	990	e_.info2 = hdr + (dlen<<8)));
dudmuck	0:f2716e543d97	991	norx:
dudmuck	0:f2716e543d97	992	LMIC.dataLen = 0;
dudmuck	0:f2716e543d97	993	return 0;
dudmuck	0:f2716e543d97	994	}
dudmuck	0:f2716e543d97	995	// Validate exact frame length
dudmuck	0:f2716e543d97	996	// Note: device address was already read+evaluated in order to arrive here.
dudmuck	0:f2716e543d97	997	int fct = d[OFF_DAT_FCT];
dudmuck	0:f2716e543d97	998	u4_t addr = os_rlsbf4(&d[OFF_DAT_ADDR]);
dudmuck	0:f2716e543d97	999	u4_t seqno = os_rlsbf2(&d[OFF_DAT_SEQNO]);
dudmuck	0:f2716e543d97	1000	int olen = fct & FCT_OPTLEN;
dudmuck	0:f2716e543d97	1001	int ackup = (fct & FCT_ACK) != 0 ? 1 : 0; // ACK last up frame
dudmuck	0:f2716e543d97	1002	int poff = OFF_DAT_OPTS+olen;
dudmuck	0:f2716e543d97	1003	int pend = dlen-4; // MIC
dudmuck	0:f2716e543d97	1004
dudmuck	0:f2716e543d97	1005	if( addr != LMIC.devaddr ) {
dudmuck	0:f2716e543d97	1006	EV(specCond, WARN, (e_.reason = EV::specCond_t::ALIEN_ADDRESS,
dudmuck	0:f2716e543d97	1007	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1008	e_.info = addr,
dudmuck	0:f2716e543d97	1009	e_.info2 = LMIC.devaddr));
dudmuck	0:f2716e543d97	1010	goto norx;
dudmuck	0:f2716e543d97	1011	}
dudmuck	0:f2716e543d97	1012	if( poff > pend ) {
dudmuck	0:f2716e543d97	1013	EV(specCond, ERR, (e_.reason = EV::specCond_t::CORRUPTED_FRAME,
dudmuck	0:f2716e543d97	1014	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1015	e_.info = 0x1000000 + (poff-pend) + (fct<<8) + (dlen<<16)));
dudmuck	0:f2716e543d97	1016	goto norx;
dudmuck	0:f2716e543d97	1017	}
dudmuck	0:f2716e543d97	1018
dudmuck	0:f2716e543d97	1019	int port = -1;
dudmuck	0:f2716e543d97	1020	int replayConf = 0;
dudmuck	0:f2716e543d97	1021
dudmuck	0:f2716e543d97	1022	if( pend > poff )
dudmuck	0:f2716e543d97	1023	port = d[poff++];
dudmuck	0:f2716e543d97	1024
dudmuck	0:f2716e543d97	1025	seqno = LMIC.seqnoDn + (u2_t)(seqno - LMIC.seqnoDn);
dudmuck	0:f2716e543d97	1026
dudmuck	0:f2716e543d97	1027	if( !aes_verifyMic(LMIC.nwkKey, LMIC.devaddr, seqno, /dn/1, d, pend) ) {
dudmuck	0:f2716e543d97	1028	EV(spe3Cond, ERR, (e_.reason = EV::spe3Cond_t::CORRUPTED_MIC,
dudmuck	0:f2716e543d97	1029	e_.eui1 = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1030	e_.info1 = Base::lsbf4(&d[pend]),
dudmuck	0:f2716e543d97	1031	e_.info2 = seqno,
dudmuck	0:f2716e543d97	1032	e_.info3 = LMIC.devaddr));
dudmuck	0:f2716e543d97	1033	goto norx;
dudmuck	0:f2716e543d97	1034	}
dudmuck	0:f2716e543d97	1035	if( seqno < LMIC.seqnoDn ) {
dudmuck	0:f2716e543d97	1036	if( (s4_t)seqno > (s4_t)LMIC.seqnoDn ) {
dudmuck	0:f2716e543d97	1037	EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_ROLL_OVER,
dudmuck	0:f2716e543d97	1038	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1039	e_.info = LMIC.seqnoDn,
dudmuck	0:f2716e543d97	1040	e_.info2 = seqno));
dudmuck	0:f2716e543d97	1041	goto norx;
dudmuck	0:f2716e543d97	1042	}
dudmuck	0:f2716e543d97	1043	if( seqno != LMIC.seqnoDn-1 \|\| !LMIC.dnConf \|\| ftype != HDR_FTYPE_DCDN ) {
dudmuck	0:f2716e543d97	1044	EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_OBSOLETE,
dudmuck	0:f2716e543d97	1045	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1046	e_.info = LMIC.seqnoDn,
dudmuck	0:f2716e543d97	1047	e_.info2 = seqno));
dudmuck	0:f2716e543d97	1048	goto norx;
dudmuck	0:f2716e543d97	1049	}
dudmuck	0:f2716e543d97	1050	// Replay of previous sequence number allowed only if
dudmuck	0:f2716e543d97	1051	// previous frame and repeated both requested confirmation
dudmuck	0:f2716e543d97	1052	replayConf = 1;
dudmuck	0:f2716e543d97	1053	}
dudmuck	0:f2716e543d97	1054	else {
dudmuck	0:f2716e543d97	1055	if( seqno > LMIC.seqnoDn ) {
dudmuck	0:f2716e543d97	1056	EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_SKIP,
dudmuck	0:f2716e543d97	1057	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1058	e_.info = LMIC.seqnoDn,
dudmuck	0:f2716e543d97	1059	e_.info2 = seqno));
dudmuck	0:f2716e543d97	1060	}
dudmuck	0:f2716e543d97	1061	LMIC.seqnoDn = seqno+1; // next number to be expected
dudmuck	0:f2716e543d97	1062	DO_DEVDB(LMIC.seqnoDn,seqnoDn);
dudmuck	0:f2716e543d97	1063	// DN frame requested confirmation - provide ACK once with next UP frame
dudmuck	0:f2716e543d97	1064	LMIC.dnConf = (ftype == HDR_FTYPE_DCDN ? FCT_ACK : 0);
dudmuck	0:f2716e543d97	1065	}
dudmuck	0:f2716e543d97	1066
dudmuck	0:f2716e543d97	1067	if( LMIC.dnConf \|\| (fct & FCT_MORE) )
dudmuck	0:f2716e543d97	1068	LMIC.opmode \|= OP_POLL;
dudmuck	0:f2716e543d97	1069
dudmuck	0:f2716e543d97	1070	// We heard from network
dudmuck	0:f2716e543d97	1071	LMIC.adrChanged = LMIC.rejoinCnt = 0;
dudmuck	0:f2716e543d97	1072	if( LMIC.adrAckReq != LINK_CHECK_OFF )
dudmuck	0:f2716e543d97	1073	LMIC.adrAckReq = LINK_CHECK_INIT;
dudmuck	0:f2716e543d97	1074
dudmuck	0:f2716e543d97	1075	// Process OPTS
dudmuck	0:f2716e543d97	1076	int m = LMIC.rssi - RSSI_OFF - getSensitivity(LMIC.rps);
dudmuck	0:f2716e543d97	1077	LMIC.margin = m < 0 ? 0 : m > 254 ? 254 : m;
dudmuck	0:f2716e543d97	1078
dudmuck	0:f2716e543d97	1079	xref2u1_t opts = &d[OFF_DAT_OPTS];
dudmuck	0:f2716e543d97	1080	int oidx = 0;
dudmuck	0:f2716e543d97	1081	while( oidx < olen ) {
dudmuck	0:f2716e543d97	1082	switch( opts[oidx] ) {
dudmuck	0:f2716e543d97	1083	case MCMD_LCHK_ANS: {
dudmuck	0:f2716e543d97	1084	//int gwmargin = opts[oidx+1];
dudmuck	0:f2716e543d97	1085	//int ngws = opts[oidx+2];
dudmuck	0:f2716e543d97	1086	oidx += 3;
dudmuck	0:f2716e543d97	1087	continue;
dudmuck	0:f2716e543d97	1088	}
dudmuck	0:f2716e543d97	1089	case MCMD_LADR_REQ: {
dudmuck	0:f2716e543d97	1090	u1_t p1 = opts[oidx+1]; // txpow + DR
dudmuck	0:f2716e543d97	1091	u2_t chmap = os_rlsbf2(&opts[oidx+2]);// list of enabled channels
dudmuck	0:f2716e543d97	1092	u1_t chpage = opts[oidx+4] & MCMD_LADR_CHPAGE_MASK; // channel page
dudmuck	0:f2716e543d97	1093	u1_t uprpt = opts[oidx+4] & MCMD_LADR_REPEAT_MASK; // up repeat count
dudmuck	0:f2716e543d97	1094	oidx += 5;
dudmuck	0:f2716e543d97	1095
dudmuck	0:f2716e543d97	1096	LMIC.ladrAns = 0x80 \| // Include an answer into next frame up
dudmuck	0:f2716e543d97	1097	MCMD_LADR_ANS_POWACK \| MCMD_LADR_ANS_CHACK \| MCMD_LADR_ANS_DRACK;
dudmuck	0:f2716e543d97	1098	if( !mapChannels(chpage, chmap) )
dudmuck	0:f2716e543d97	1099	LMIC.ladrAns &= ~MCMD_LADR_ANS_CHACK;
dudmuck	0:f2716e543d97	1100	dr_t dr = (dr_t)(p1>>MCMD_LADR_DR_SHIFT);
dudmuck	0:f2716e543d97	1101	if( !validDR(dr) ) {
dudmuck	0:f2716e543d97	1102	LMIC.ladrAns &= ~MCMD_LADR_ANS_DRACK;
dudmuck	0:f2716e543d97	1103	EV(specCond, ERR, (e_.reason = EV::specCond_t::BAD_MAC_CMD,
dudmuck	0:f2716e543d97	1104	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1105	e_.info = Base::lsbf4(&d[pend]),
dudmuck	0:f2716e543d97	1106	e_.info2 = Base::msbf4(&opts[oidx-4])));
dudmuck	0:f2716e543d97	1107	}
dudmuck	0:f2716e543d97	1108	if( (LMIC.ladrAns & 0x7F) == (MCMD_LADR_ANS_POWACK \| MCMD_LADR_ANS_CHACK \| MCMD_LADR_ANS_DRACK) ) {
dudmuck	0:f2716e543d97	1109	// Nothing went wrong - use settings
dudmuck	0:f2716e543d97	1110	LMIC.upRepeat = uprpt;
dudmuck	0:f2716e543d97	1111	setDrTxpow(DRCHG_NWKCMD, dr, pow2dBm(p1));
dudmuck	0:f2716e543d97	1112	}
dudmuck	0:f2716e543d97	1113	LMIC.adrChanged = 1; // Trigger an ACK to NWK
dudmuck	0:f2716e543d97	1114	continue;
dudmuck	0:f2716e543d97	1115	}
dudmuck	0:f2716e543d97	1116	case MCMD_DEVS_REQ: {
dudmuck	0:f2716e543d97	1117	LMIC.devsAns = 1;
dudmuck	0:f2716e543d97	1118	oidx += 1;
dudmuck	0:f2716e543d97	1119	continue;
dudmuck	0:f2716e543d97	1120	}
dudmuck	0:f2716e543d97	1121	case MCMD_DN2P_SET: {
dudmuck	0:f2716e543d97	1122	dr_t dr = (dr_t)(opts[oidx+1] & 0x0F);
dudmuck	0:f2716e543d97	1123	u4_t freq = convFreq(&opts[oidx+2]);
dudmuck	0:f2716e543d97	1124	oidx += 5;
dudmuck	0:f2716e543d97	1125	LMIC.dn2Ans = 0x80; // answer pending
dudmuck	0:f2716e543d97	1126	if( validDR(dr) )
dudmuck	0:f2716e543d97	1127	LMIC.dn2Ans \|= MCMD_DN2P_ANS_DRACK;
dudmuck	0:f2716e543d97	1128	if( freq != 0 )
dudmuck	0:f2716e543d97	1129	LMIC.dn2Ans \|= MCMD_DN2P_ANS_CHACK;
dudmuck	0:f2716e543d97	1130	if( LMIC.dn2Ans == (0x80\|MCMD_DN2P_ANS_DRACK\|MCMD_DN2P_ANS_CHACK) ) {
dudmuck	0:f2716e543d97	1131	LMIC.dn2Dr = dr;
dudmuck	0:f2716e543d97	1132	LMIC.dn2Freq = freq;
dudmuck	0:f2716e543d97	1133	DO_DEVDB(LMIC.dn2Dr,dn2Dr);
dudmuck	0:f2716e543d97	1134	DO_DEVDB(LMIC.dn2Freq,dn2Freq);
dudmuck	0:f2716e543d97	1135	}
dudmuck	0:f2716e543d97	1136	continue;
dudmuck	0:f2716e543d97	1137	}
dudmuck	0:f2716e543d97	1138	case MCMD_DCAP_REQ: {
dudmuck	0:f2716e543d97	1139	u1_t cap = opts[oidx+1];
dudmuck	0:f2716e543d97	1140	oidx += 2;
dudmuck	0:f2716e543d97	1141	// A value cap=0xFF means device is OFF unless enabled again manually.
dudmuck	0:f2716e543d97	1142	if( cap==0xFF )
dudmuck	0:f2716e543d97	1143	LMIC.opmode \|= OP_SHUTDOWN; // stop any sending
dudmuck	0:f2716e543d97	1144	LMIC.globalDutyRate = cap & 0xF;
dudmuck	0:f2716e543d97	1145	LMIC.globalDutyAvail = os_getTime();
dudmuck	0:f2716e543d97	1146	DO_DEVDB(cap,dutyCap);
dudmuck	0:f2716e543d97	1147	LMIC.dutyCapAns = 1;
dudmuck	0:f2716e543d97	1148	continue;
dudmuck	0:f2716e543d97	1149	}
dudmuck	0:f2716e543d97	1150	case MCMD_SNCH_REQ: {
dudmuck	0:f2716e543d97	1151	u1_t chidx = opts[oidx+1]; // channel
dudmuck	0:f2716e543d97	1152	u4_t freq = convFreq(&opts[oidx+2]); // freq
dudmuck	0:f2716e543d97	1153	u1_t drs = opts[oidx+5]; // datarate span
dudmuck	0:f2716e543d97	1154	LMIC.snchAns = 0x80;
dudmuck	0:f2716e543d97	1155	if( freq != 0 && LMIC_setupChannel(chidx, freq, DR_RANGE_MAP(drs&0xF,drs>>4), -1) )
dudmuck	0:f2716e543d97	1156	LMIC.snchAns \|= MCMD_SNCH_ANS_DRACK\|MCMD_SNCH_ANS_FQACK;
dudmuck	0:f2716e543d97	1157	oidx += 6;
dudmuck	0:f2716e543d97	1158	continue;
dudmuck	0:f2716e543d97	1159	}
dudmuck	0:f2716e543d97	1160	case MCMD_PING_SET: {
dudmuck	0:f2716e543d97	1161	u4_t freq = convFreq(&opts[oidx+1]);
dudmuck	0:f2716e543d97	1162	oidx += 4;
dudmuck	0:f2716e543d97	1163	u1_t flags = 0x80;
dudmuck	0:f2716e543d97	1164	if( freq != 0 ) {
dudmuck	0:f2716e543d97	1165	flags \|= MCMD_PING_ANS_FQACK;
dudmuck	0:f2716e543d97	1166	LMIC.ping.freq = freq;
dudmuck	0:f2716e543d97	1167	DO_DEVDB(LMIC.ping.intvExp, pingIntvExp);
dudmuck	0:f2716e543d97	1168	DO_DEVDB(LMIC.ping.freq, pingFreq);
dudmuck	0:f2716e543d97	1169	DO_DEVDB(LMIC.ping.dr, pingDr);
dudmuck	0:f2716e543d97	1170	}
dudmuck	0:f2716e543d97	1171	LMIC.pingSetAns = flags;
dudmuck	0:f2716e543d97	1172	continue;
dudmuck	0:f2716e543d97	1173	}
dudmuck	0:f2716e543d97	1174	case MCMD_BCNI_ANS: {
dudmuck	0:f2716e543d97	1175	// Ignore if tracking already enabled
dudmuck	0:f2716e543d97	1176	if( (LMIC.opmode & OP_TRACK) == 0 ) {
dudmuck	0:f2716e543d97	1177	LMIC.bcnChnl = opts[oidx+3];
dudmuck	0:f2716e543d97	1178	// Enable tracking - bcninfoTries
dudmuck	0:f2716e543d97	1179	LMIC.opmode \|= OP_TRACK;
dudmuck	0:f2716e543d97	1180	// Cleared later in txComplete handling - triggers EV_BEACON_FOUND
dudmuck	0:f2716e543d97	1181	ASSERT(LMIC.bcninfoTries!=0);
dudmuck	0:f2716e543d97	1182	// Setup RX parameters
dudmuck	0:f2716e543d97	1183	LMIC.bcninfo.txtime = (LMIC.rxtime
dudmuck	0:f2716e543d97	1184	+ ms2osticks(os_rlsbf2(&opts[oidx+1]) * MCMD_BCNI_TUNIT)
dudmuck	0:f2716e543d97	1185	+ ms2osticksCeil(MCMD_BCNI_TUNIT/2)
dudmuck	0:f2716e543d97	1186	- BCN_INTV_osticks);
dudmuck	0:f2716e543d97	1187	LMIC.bcninfo.flags = 0; // txtime above cannot be used as reference (BCN_PARTIAL\|BCN_FULL cleared)
dudmuck	0:f2716e543d97	1188	calcBcnRxWindowFromMillis(MCMD_BCNI_TUNIT,1); // error of +/-N ms
dudmuck	0:f2716e543d97	1189
dudmuck	0:f2716e543d97	1190	EV(lostFrame, INFO, (e_.reason = EV::lostFrame_t::MCMD_BCNI_ANS,
dudmuck	0:f2716e543d97	1191	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1192	e_.lostmic = Base::lsbf4(&d[pend]),
dudmuck	0:f2716e543d97	1193	e_.info = (LMIC.missedBcns \|
dudmuck	0:f2716e543d97	1194	(osticks2us(LMIC.bcninfo.txtime + BCN_INTV_osticks
dudmuck	0:f2716e543d97	1195	- LMIC.bcnRxtime) << 8)),
dudmuck	0:f2716e543d97	1196	e_.time = MAIN::CDEV->ostime2ustime(LMIC.bcninfo.txtime + BCN_INTV_osticks)));
dudmuck	0:f2716e543d97	1197	}
dudmuck	0:f2716e543d97	1198	oidx += 4;
dudmuck	0:f2716e543d97	1199	continue;
dudmuck	0:f2716e543d97	1200	}
dudmuck	0:f2716e543d97	1201	}
dudmuck	0:f2716e543d97	1202	EV(specCond, ERR, (e_.reason = EV::specCond_t::BAD_MAC_CMD,
dudmuck	0:f2716e543d97	1203	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1204	e_.info = Base::lsbf4(&d[pend]),
dudmuck	0:f2716e543d97	1205	e_.info2 = Base::msbf4(&opts[oidx])));
dudmuck	0:f2716e543d97	1206	break;
dudmuck	0:f2716e543d97	1207	}
dudmuck	0:f2716e543d97	1208	if( oidx != olen ) {
dudmuck	0:f2716e543d97	1209	EV(specCond, ERR, (e_.reason = EV::specCond_t::CORRUPTED_FRAME,
dudmuck	0:f2716e543d97	1210	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1211	e_.info = 0x1000000 + (oidx) + (olen<<8)));
dudmuck	0:f2716e543d97	1212	}
dudmuck	0:f2716e543d97	1213
dudmuck	0:f2716e543d97	1214	if( !replayConf ) {
dudmuck	0:f2716e543d97	1215	// Handle payload only if not a replay
dudmuck	0:f2716e543d97	1216	// Decrypt payload - if any
dudmuck	0:f2716e543d97	1217	if( port >= 0 && pend-poff > 0 )
dudmuck	0:f2716e543d97	1218	aes_cipher(port <= 0 ? LMIC.nwkKey : LMIC.artKey, LMIC.devaddr, seqno, /dn/1, d+poff, pend-poff);
dudmuck	0:f2716e543d97	1219
dudmuck	0:f2716e543d97	1220	EV(dfinfo, DEBUG, (e_.deveui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1221	e_.devaddr = LMIC.devaddr,
dudmuck	0:f2716e543d97	1222	e_.seqno = seqno,
dudmuck	0:f2716e543d97	1223	e_.flags = (port < 0 ? EV::dfinfo_t::NOPORT : 0) \| EV::dfinfo_t::DN,
dudmuck	0:f2716e543d97	1224	e_.mic = Base::lsbf4(&d[pend]),
dudmuck	0:f2716e543d97	1225	e_.hdr = d[LORA::OFF_DAT_HDR],
dudmuck	0:f2716e543d97	1226	e_.fct = d[LORA::OFF_DAT_FCT],
dudmuck	0:f2716e543d97	1227	e_.port = port,
dudmuck	0:f2716e543d97	1228	e_.plen = dlen,
dudmuck	0:f2716e543d97	1229	e_.opts.length = olen,
dudmuck	0:f2716e543d97	1230	memcpy(&e_.opts[0], opts, olen)));
dudmuck	0:f2716e543d97	1231	} else {
dudmuck	0:f2716e543d97	1232	EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_REPLAY,
dudmuck	0:f2716e543d97	1233	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1234	e_.info = Base::lsbf4(&d[pend]),
dudmuck	0:f2716e543d97	1235	e_.info2 = seqno));
dudmuck	0:f2716e543d97	1236	}
dudmuck	0:f2716e543d97	1237
dudmuck	0:f2716e543d97	1238	if( // NWK acks but we don't have a frame pending
dudmuck	0:f2716e543d97	1239	(ackup && LMIC.txCnt == 0) \|\|
dudmuck	0:f2716e543d97	1240	// We sent up confirmed and we got a response in DNW1/DNW2
dudmuck	0:f2716e543d97	1241	// BUT it did not carry an ACK - this should never happen
dudmuck	0:f2716e543d97	1242	// Do not resend and assume frame was not ACKed.
dudmuck	0:f2716e543d97	1243	(!ackup && LMIC.txCnt != 0) ) {
dudmuck	0:f2716e543d97	1244	EV(specCond, ERR, (e_.reason = EV::specCond_t::SPURIOUS_ACK,
dudmuck	0:f2716e543d97	1245	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1246	e_.info = seqno,
dudmuck	0:f2716e543d97	1247	e_.info2 = ackup));
dudmuck	0:f2716e543d97	1248	}
dudmuck	0:f2716e543d97	1249
dudmuck	0:f2716e543d97	1250	if( LMIC.txCnt != 0 ) // we requested an ACK
dudmuck	0:f2716e543d97	1251	LMIC.txrxFlags \|= ackup ? TXRX_ACK : TXRX_NACK;
dudmuck	0:f2716e543d97	1252
dudmuck	0:f2716e543d97	1253	if( port < 0 ) {
dudmuck	0:f2716e543d97	1254	LMIC.txrxFlags \|= TXRX_NOPORT;
dudmuck	0:f2716e543d97	1255	LMIC.dataBeg = poff;
dudmuck	0:f2716e543d97	1256	LMIC.dataLen = 0;
dudmuck	0:f2716e543d97	1257	} else {
dudmuck	0:f2716e543d97	1258	LMIC.txrxFlags \|= TXRX_PORT;
dudmuck	0:f2716e543d97	1259	LMIC.dataBeg = poff;
dudmuck	0:f2716e543d97	1260	LMIC.dataLen = pend-poff;
dudmuck	0:f2716e543d97	1261	}
dudmuck	0:f2716e543d97	1262	return 1;
dudmuck	0:f2716e543d97	1263	}
dudmuck	0:f2716e543d97	1264
dudmuck	0:f2716e543d97	1265
dudmuck	0:f2716e543d97	1266	// ================================================================================
dudmuck	0:f2716e543d97	1267	// TX/RX transaction support
dudmuck	0:f2716e543d97	1268
dudmuck	0:f2716e543d97	1269
dudmuck	0:f2716e543d97	1270	static void setupRx2 (void) {
dudmuck	0:f2716e543d97	1271	LMIC.txrxFlags = TXRX_DNW2;
dudmuck	0:f2716e543d97	1272	LMIC.rps = dndr2rps(LMIC.dn2Dr);
dudmuck	0:f2716e543d97	1273	LMIC.freq = LMIC.dn2Freq;
dudmuck	0:f2716e543d97	1274	LMIC.dataLen = 0;
dudmuck	0:f2716e543d97	1275	os_radio(RADIO_RX);
dudmuck	0:f2716e543d97	1276	}
dudmuck	0:f2716e543d97	1277
dudmuck	0:f2716e543d97	1278
dudmuck	0:f2716e543d97	1279	static void schedRx2 (ostime_t delay, osjobcb_t func) {
dudmuck	0:f2716e543d97	1280	// Add 1.5 symbols we need 5 out of 8. Try to sync 1.5 symbols into the preamble.
dudmuck	0:f2716e543d97	1281	LMIC.rxtime = LMIC.txend + delay + (PAMBL_SYMS-MINRX_SYMS)*dr2hsym(LMIC.dn2Dr);
dudmuck	0:f2716e543d97	1282	os_setTimedCallback(&LMIC.osjob, LMIC.rxtime - RX_RAMPUP, func);
dudmuck	0:f2716e543d97	1283	}
dudmuck	0:f2716e543d97	1284
dudmuck	0:f2716e543d97	1285	static void setupRx1 (osjobcb_t func) {
dudmuck	0:f2716e543d97	1286	LMIC.txrxFlags = TXRX_DNW1;
dudmuck	0:f2716e543d97	1287	// Turn LMIC.rps from TX over to RX
dudmuck	0:f2716e543d97	1288	LMIC.rps = setNocrc(LMIC.rps,1);
dudmuck	0:f2716e543d97	1289	LMIC.dataLen = 0;
dudmuck	0:f2716e543d97	1290	LMIC.osjob.func = func;
dudmuck	0:f2716e543d97	1291	os_radio(RADIO_RX);
dudmuck	0:f2716e543d97	1292	}
dudmuck	0:f2716e543d97	1293
dudmuck	0:f2716e543d97	1294
dudmuck	0:f2716e543d97	1295	// Called by HAL once TX complete and delivers exact end of TX time stamp in LMIC.rxtime
dudmuck	0:f2716e543d97	1296	static void txDone (ostime_t delay, osjobcb_t func) {
dudmuck	0:f2716e543d97	1297	if( (LMIC.opmode & (OP_TRACK\|OP_PINGABLE\|OP_PINGINI)) == (OP_TRACK\|OP_PINGABLE) ) {
dudmuck	0:f2716e543d97	1298	rxschedInit(&LMIC.ping); // note: reuses LMIC.frame buffer!
dudmuck	0:f2716e543d97	1299	LMIC.opmode \|= OP_PINGINI;
dudmuck	0:f2716e543d97	1300	}
dudmuck	0:f2716e543d97	1301	// Change RX frequency / rps (US only) before we increment txChnl
dudmuck	0:f2716e543d97	1302	setRx1Params();
dudmuck	0:f2716e543d97	1303	// LMIC.rxsyms carries the TX datarate (can be != LMIC.datarate [confirm retries etc.])
dudmuck	0:f2716e543d97	1304	// Setup receive - LMIC.rxtime is preloaded with 1.5 symbols offset to tune
dudmuck	0:f2716e543d97	1305	// into the middle of the 8 symbols preamble.
dudmuck	0:f2716e543d97	1306	#if defined(CFG_eu868)
dudmuck	0:f2716e543d97	1307	if( /* TX datarate */LMIC.rxsyms == DR_FSK ) {
dudmuck	0:f2716e543d97	1308	LMIC.rxtime = LMIC.txend + delay - PRERX_FSK*us2osticksRound(160);
dudmuck	0:f2716e543d97	1309	LMIC.rxsyms = RXLEN_FSK;
dudmuck	0:f2716e543d97	1310	}
dudmuck	0:f2716e543d97	1311	else
dudmuck	0:f2716e543d97	1312	#endif
dudmuck	0:f2716e543d97	1313	{
dudmuck	0:f2716e543d97	1314	LMIC.rxtime = LMIC.txend + delay + (PAMBL_SYMS-MINRX_SYMS)*dr2hsym(LMIC.dndr);
dudmuck	0:f2716e543d97	1315	LMIC.rxsyms = MINRX_SYMS;
dudmuck	0:f2716e543d97	1316	}
dudmuck	0:f2716e543d97	1317	os_setTimedCallback(&LMIC.osjob, LMIC.rxtime - RX_RAMPUP, func);
dudmuck	0:f2716e543d97	1318	}
dudmuck	0:f2716e543d97	1319
dudmuck	0:f2716e543d97	1320
dudmuck	0:f2716e543d97	1321	// ======================================== Join frames
dudmuck	0:f2716e543d97	1322
dudmuck	0:f2716e543d97	1323
dudmuck	0:f2716e543d97	1324	static void onJoinFailed (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1325	// Notify app - must call LMIC_reset() to stop joining
dudmuck	0:f2716e543d97	1326	// otherwise join procedure continues.
dudmuck	0:f2716e543d97	1327	reportEvent(EV_JOIN_FAILED);
dudmuck	0:f2716e543d97	1328	}
dudmuck	0:f2716e543d97	1329
dudmuck	0:f2716e543d97	1330
dudmuck	0:f2716e543d97	1331	static bit_t processJoinAccept (void) {
dudmuck	0:f2716e543d97	1332	ASSERT(LMIC.txrxFlags != TXRX_DNW1 \|\| LMIC.dataLen != 0);
dudmuck	0:f2716e543d97	1333	ASSERT((LMIC.opmode & OP_TXRXPEND)!=0);
dudmuck	0:f2716e543d97	1334
dudmuck	0:f2716e543d97	1335	if( LMIC.dataLen == 0 ) {
dudmuck	0:f2716e543d97	1336	nojoinframe:
dudmuck	0:f2716e543d97	1337	if( (LMIC.opmode & OP_JOINING) == 0 ) {
dudmuck	0:f2716e543d97	1338	ASSERT((LMIC.opmode & OP_REJOIN) != 0);
dudmuck	0:f2716e543d97	1339	// REJOIN attempt for roaming
dudmuck	0:f2716e543d97	1340	LMIC.opmode &= ~(OP_REJOIN\|OP_TXRXPEND);
dudmuck	0:f2716e543d97	1341	if( LMIC.rejoinCnt < 10 )
dudmuck	0:f2716e543d97	1342	LMIC.rejoinCnt++;
dudmuck	0:f2716e543d97	1343	reportEvent(EV_REJOIN_FAILED);
dudmuck	0:f2716e543d97	1344	return 1;
dudmuck	0:f2716e543d97	1345	}
dudmuck	0:f2716e543d97	1346	LMIC.opmode &= ~OP_TXRXPEND;
dudmuck	0:f2716e543d97	1347	ostime_t delay = nextJoinState();
dudmuck	0:f2716e543d97	1348	EV(devCond, DEBUG, (e_.reason = EV::devCond_t::NO_JACC,
dudmuck	0:f2716e543d97	1349	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1350	e_.info = LMIC.datarate\|DR_PAGE,
dudmuck	0:f2716e543d97	1351	e_.info2 = osticks2ms(delay)));
dudmuck	0:f2716e543d97	1352	// Build next JOIN REQUEST with next engineUpdate call
dudmuck	0:f2716e543d97	1353	// Optionally, report join failed.
dudmuck	0:f2716e543d97	1354	// Both after a random/chosen amount of ticks.
dudmuck	0:f2716e543d97	1355	os_setTimedCallback(&LMIC.osjob, os_getTime()+delay,
dudmuck	0:f2716e543d97	1356	(delay&1) != 0
dudmuck	0:f2716e543d97	1357	? FUNC_ADDR(onJoinFailed) // one JOIN iteration done and failed
dudmuck	0:f2716e543d97	1358	: FUNC_ADDR(runEngineUpdate)); // next step to be delayed
dudmuck	0:f2716e543d97	1359	return 1;
dudmuck	0:f2716e543d97	1360	}
dudmuck	0:f2716e543d97	1361	u1_t hdr = LMIC.frame[0];
dudmuck	0:f2716e543d97	1362	u1_t dlen = LMIC.dataLen;
dudmuck	0:f2716e543d97	1363	u4_t mic = os_rlsbf4(&LMIC.frame[dlen-4]); // safe before modified by encrypt!
dudmuck	0:f2716e543d97	1364	if( (dlen != LEN_JA && dlen != LEN_JAEXT)
dudmuck	0:f2716e543d97	1365	\|\| (hdr & (HDR_FTYPE\|HDR_MAJOR)) != (HDR_FTYPE_JACC\|HDR_MAJOR_V1) ) {
dudmuck	0:f2716e543d97	1366	EV(specCond, ERR, (e_.reason = EV::specCond_t::UNEXPECTED_FRAME,
dudmuck	0:f2716e543d97	1367	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1368	e_.info = dlen < 4 ? 0 : mic,
dudmuck	0:f2716e543d97	1369	e_.info2 = hdr + (dlen<<8)));
dudmuck	0:f2716e543d97	1370	badframe:
dudmuck	0:f2716e543d97	1371	if( (LMIC.txrxFlags & TXRX_DNW1) != 0 )
dudmuck	0:f2716e543d97	1372	return 0;
dudmuck	0:f2716e543d97	1373	goto nojoinframe;
dudmuck	0:f2716e543d97	1374	}
dudmuck	0:f2716e543d97	1375	aes_encrypt(LMIC.frame+1, dlen-1);
dudmuck	0:f2716e543d97	1376	if( !aes_verifyMic0(LMIC.frame, dlen-4) ) {
dudmuck	0:f2716e543d97	1377	EV(specCond, ERR, (e_.reason = EV::specCond_t::JOIN_BAD_MIC,
dudmuck	0:f2716e543d97	1378	e_.info = mic));
dudmuck	0:f2716e543d97	1379	goto badframe;
dudmuck	0:f2716e543d97	1380	}
dudmuck	0:f2716e543d97	1381
dudmuck	0:f2716e543d97	1382	u4_t addr = os_rlsbf4(LMIC.frame+OFF_JA_DEVADDR);
dudmuck	0:f2716e543d97	1383	LMIC.devaddr = addr;
dudmuck	0:f2716e543d97	1384	LMIC.netid = os_rlsbf4(&LMIC.frame[OFF_JA_NETID]) & 0xFFFFFF;
dudmuck	0:f2716e543d97	1385
dudmuck	0:f2716e543d97	1386	#if defined(CFG_eu868)
dudmuck	0:f2716e543d97	1387	initDefaultChannels(0);
dudmuck	0:f2716e543d97	1388	#endif
dudmuck	0:f2716e543d97	1389	if( dlen > LEN_JA ) {
dudmuck	0:f2716e543d97	1390	#if defined(CFG_us915)
dudmuck	0:f2716e543d97	1391	goto badframe;
dudmuck	0:f2716e543d97	1392	#endif
dudmuck	0:f2716e543d97	1393	dlen = OFF_CFLIST;
dudmuck	0:f2716e543d97	1394	for( u1_t chidx=3; chidx<8; chidx++, dlen+=3 ) {
dudmuck	0:f2716e543d97	1395	u4_t freq = convFreq(&LMIC.frame[dlen]);
dudmuck	0:f2716e543d97	1396	if( freq )
dudmuck	0:f2716e543d97	1397	LMIC_setupChannel(chidx, freq, 0, -1);
dudmuck	0:f2716e543d97	1398	}
dudmuck	0:f2716e543d97	1399	}
dudmuck	0:f2716e543d97	1400
dudmuck	0:f2716e543d97	1401	// already incremented when JOIN REQ got sent off
dudmuck	0:f2716e543d97	1402	aes_sessKeys(LMIC.devNonce-1, &LMIC.frame[OFF_JA_ARTNONCE], LMIC.nwkKey, LMIC.artKey);
dudmuck	0:f2716e543d97	1403	DO_DEVDB(LMIC.netid, netid);
dudmuck	0:f2716e543d97	1404	DO_DEVDB(LMIC.devaddr, devaddr);
dudmuck	0:f2716e543d97	1405	DO_DEVDB(LMIC.nwkKey, nwkkey);
dudmuck	0:f2716e543d97	1406	DO_DEVDB(LMIC.artKey, artkey);
dudmuck	0:f2716e543d97	1407
dudmuck	0:f2716e543d97	1408	EV(joininfo, INFO, (e_.arteui = MAIN::CDEV->getArtEui(),
dudmuck	0:f2716e543d97	1409	e_.deveui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1410	e_.devaddr = LMIC.devaddr,
dudmuck	0:f2716e543d97	1411	e_.oldaddr = oldaddr,
dudmuck	0:f2716e543d97	1412	e_.nonce = LMIC.devNonce-1,
dudmuck	0:f2716e543d97	1413	e_.mic = mic,
dudmuck	0:f2716e543d97	1414	e_.reason = ((LMIC.opmode & OP_REJOIN) != 0
dudmuck	0:f2716e543d97	1415	? EV::joininfo_t::REJOIN_ACCEPT
dudmuck	0:f2716e543d97	1416	: EV::joininfo_t::ACCEPT)));
dudmuck	0:f2716e543d97	1417
dudmuck	0:f2716e543d97	1418	ASSERT((LMIC.opmode & (OP_JOINING\|OP_REJOIN))!=0);
dudmuck	0:f2716e543d97	1419	if( (LMIC.opmode & OP_REJOIN) != 0 ) {
dudmuck	0:f2716e543d97	1420	// Lower DR every try below current UP DR
dudmuck	0:f2716e543d97	1421	LMIC.datarate = lowerDR(LMIC.datarate, LMIC.rejoinCnt);
dudmuck	0:f2716e543d97	1422	}
dudmuck	0:f2716e543d97	1423	LMIC.opmode &= ~(OP_JOINING\|OP_TRACK\|OP_REJOIN\|OP_TXRXPEND\|OP_PINGINI) \| OP_NEXTCHNL;
dudmuck	0:f2716e543d97	1424	stateJustJoined();
dudmuck	0:f2716e543d97	1425	reportEvent(EV_JOINED);
dudmuck	0:f2716e543d97	1426	return 1;
dudmuck	0:f2716e543d97	1427	}
dudmuck	0:f2716e543d97	1428
dudmuck	0:f2716e543d97	1429
dudmuck	0:f2716e543d97	1430	static void processRx2Jacc (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1431	if( LMIC.dataLen == 0 )
dudmuck	0:f2716e543d97	1432	LMIC.txrxFlags = 0; // nothing in 1st/2nd DN slot
dudmuck	0:f2716e543d97	1433	processJoinAccept();
dudmuck	0:f2716e543d97	1434	}
dudmuck	0:f2716e543d97	1435
dudmuck	0:f2716e543d97	1436
dudmuck	0:f2716e543d97	1437	static void setupRx2Jacc (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1438	LMIC.osjob.func = FUNC_ADDR(processRx2Jacc);
dudmuck	0:f2716e543d97	1439	setupRx2();
dudmuck	0:f2716e543d97	1440	}
dudmuck	0:f2716e543d97	1441
dudmuck	0:f2716e543d97	1442
dudmuck	0:f2716e543d97	1443	static void processRx1Jacc (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1444	if( LMIC.dataLen == 0 \|\| !processJoinAccept() )
dudmuck	0:f2716e543d97	1445	schedRx2(DELAY_JACC2_osticks, FUNC_ADDR(setupRx2Jacc));
dudmuck	0:f2716e543d97	1446	}
dudmuck	0:f2716e543d97	1447
dudmuck	0:f2716e543d97	1448
dudmuck	0:f2716e543d97	1449	static void setupRx1Jacc (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1450	setupRx1(FUNC_ADDR(processRx1Jacc));
dudmuck	0:f2716e543d97	1451	}
dudmuck	0:f2716e543d97	1452
dudmuck	0:f2716e543d97	1453
dudmuck	0:f2716e543d97	1454	static void jreqDone (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1455	txDone(DELAY_JACC1_osticks, FUNC_ADDR(setupRx1Jacc));
dudmuck	0:f2716e543d97	1456	}
dudmuck	0:f2716e543d97	1457
dudmuck	0:f2716e543d97	1458	// ======================================== Data frames
dudmuck	0:f2716e543d97	1459
dudmuck	0:f2716e543d97	1460	// Fwd decl.
dudmuck	0:f2716e543d97	1461	static bit_t processDnData(void);
dudmuck	0:f2716e543d97	1462
dudmuck	0:f2716e543d97	1463	static void processRx2DnDataDelay (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1464	processDnData();
dudmuck	0:f2716e543d97	1465	}
dudmuck	0:f2716e543d97	1466
dudmuck	0:f2716e543d97	1467	static void processRx2DnData (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1468	if( LMIC.dataLen == 0 ) {
dudmuck	0:f2716e543d97	1469	LMIC.txrxFlags = 0; // nothing in 1st/2nd DN slot
dudmuck	0:f2716e543d97	1470	// Delay callback processing to avoid up TX while gateway is txing our missed frame!
dudmuck	0:f2716e543d97	1471	// Since DNW2 uses SF12 by default we wait 3 secs.
dudmuck	0:f2716e543d97	1472	os_setTimedCallback(&LMIC.osjob,
dudmuck	0:f2716e543d97	1473	(os_getTime() + DNW2_SAFETY_ZONE + rndDelay(2)),
dudmuck	0:f2716e543d97	1474	processRx2DnDataDelay);
dudmuck	0:f2716e543d97	1475	return;
dudmuck	0:f2716e543d97	1476	}
dudmuck	0:f2716e543d97	1477	processDnData();
dudmuck	0:f2716e543d97	1478	}
dudmuck	0:f2716e543d97	1479
dudmuck	0:f2716e543d97	1480
dudmuck	0:f2716e543d97	1481	static void setupRx2DnData (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1482	LMIC.osjob.func = FUNC_ADDR(processRx2DnData);
dudmuck	0:f2716e543d97	1483	setupRx2();
dudmuck	0:f2716e543d97	1484	}
dudmuck	0:f2716e543d97	1485
dudmuck	0:f2716e543d97	1486
dudmuck	0:f2716e543d97	1487	static void processRx1DnData (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1488	if( LMIC.dataLen == 0 \|\| !processDnData() )
dudmuck	0:f2716e543d97	1489	schedRx2(DELAY_DNW2_osticks, FUNC_ADDR(setupRx2DnData));
dudmuck	0:f2716e543d97	1490	}
dudmuck	0:f2716e543d97	1491
dudmuck	0:f2716e543d97	1492
dudmuck	0:f2716e543d97	1493	static void setupRx1DnData (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1494	setupRx1(FUNC_ADDR(processRx1DnData));
dudmuck	0:f2716e543d97	1495	}
dudmuck	0:f2716e543d97	1496
dudmuck	0:f2716e543d97	1497
dudmuck	0:f2716e543d97	1498	static void updataDone (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1499	txDone(DELAY_DNW1_osticks, FUNC_ADDR(setupRx1DnData));
dudmuck	0:f2716e543d97	1500	}
dudmuck	0:f2716e543d97	1501
dudmuck	0:f2716e543d97	1502	// ========================================
dudmuck	0:f2716e543d97	1503
dudmuck	0:f2716e543d97	1504
dudmuck	0:f2716e543d97	1505	static void buildDataFrame (void) {
dudmuck	0:f2716e543d97	1506	bit_t txdata = ((LMIC.opmode & (OP_TXDATA\|OP_POLL)) != OP_POLL);
dudmuck	0:f2716e543d97	1507	u1_t dlen = txdata ? LMIC.pendTxLen : 0;
dudmuck	0:f2716e543d97	1508
dudmuck	0:f2716e543d97	1509	// Piggyback MAC options
dudmuck	0:f2716e543d97	1510	// Prioritize by importance
dudmuck	0:f2716e543d97	1511	int end = OFF_DAT_OPTS;
dudmuck	0:f2716e543d97	1512	if( (LMIC.opmode & (OP_TRACK\|OP_PINGABLE)) == (OP_TRACK\|OP_PINGABLE) ) {
dudmuck	0:f2716e543d97	1513	// Indicate pingability in every UP frame
dudmuck	0:f2716e543d97	1514	LMIC.frame[end] = MCMD_PING_IND;
dudmuck	0:f2716e543d97	1515	LMIC.frame[end+1] = LMIC.ping.dr \| (LMIC.ping.intvExp<<4);
dudmuck	0:f2716e543d97	1516	end += 2;
dudmuck	0:f2716e543d97	1517	}
dudmuck	0:f2716e543d97	1518	if( LMIC.dutyCapAns ) {
dudmuck	0:f2716e543d97	1519	LMIC.frame[end] = MCMD_DCAP_ANS;
dudmuck	0:f2716e543d97	1520	end += 1;
dudmuck	0:f2716e543d97	1521	LMIC.dutyCapAns = 0;
dudmuck	0:f2716e543d97	1522	}
dudmuck	0:f2716e543d97	1523	if( LMIC.dn2Ans ) {
dudmuck	0:f2716e543d97	1524	LMIC.frame[end+0] = MCMD_DN2P_ANS;
dudmuck	0:f2716e543d97	1525	LMIC.frame[end+1] = LMIC.dn2Ans & ~MCMD_DN2P_ANS_RFU;
dudmuck	0:f2716e543d97	1526	end += 2;
dudmuck	0:f2716e543d97	1527	LMIC.dn2Ans = 0;
dudmuck	0:f2716e543d97	1528	}
dudmuck	0:f2716e543d97	1529	if( LMIC.devsAns ) { // answer to device status
dudmuck	0:f2716e543d97	1530	LMIC.frame[end+0] = MCMD_DEVS_ANS;
dudmuck	0:f2716e543d97	1531	LMIC.frame[end+1] = LMIC.margin;
dudmuck	0:f2716e543d97	1532	LMIC.frame[end+2] = os_getBattLevel();
dudmuck	0:f2716e543d97	1533	end += 3;
dudmuck	0:f2716e543d97	1534	LMIC.devsAns = 0;
dudmuck	0:f2716e543d97	1535	}
dudmuck	0:f2716e543d97	1536	if( LMIC.ladrAns ) { // answer to ADR change
dudmuck	0:f2716e543d97	1537	LMIC.frame[end+0] = MCMD_LADR_ANS;
dudmuck	0:f2716e543d97	1538	LMIC.frame[end+1] = LMIC.ladrAns & ~MCMD_LADR_ANS_RFU;
dudmuck	0:f2716e543d97	1539	end += 2;
dudmuck	0:f2716e543d97	1540	LMIC.ladrAns = 0;
dudmuck	0:f2716e543d97	1541	}
dudmuck	0:f2716e543d97	1542	if( LMIC.bcninfoTries > 0 ) {
dudmuck	0:f2716e543d97	1543	LMIC.frame[end] = MCMD_BCNI_REQ;
dudmuck	0:f2716e543d97	1544	end += 1;
dudmuck	0:f2716e543d97	1545	}
dudmuck	0:f2716e543d97	1546	if( LMIC.adrChanged ) {
dudmuck	0:f2716e543d97	1547	if( LMIC.adrAckReq < 0 )
dudmuck	0:f2716e543d97	1548	LMIC.adrAckReq = 0;
dudmuck	0:f2716e543d97	1549	LMIC.adrChanged = 0;
dudmuck	0:f2716e543d97	1550	}
dudmuck	0:f2716e543d97	1551	if( LMIC.pingSetAns != 0 ) {
dudmuck	0:f2716e543d97	1552	LMIC.frame[end+0] = MCMD_PING_ANS;
dudmuck	0:f2716e543d97	1553	LMIC.frame[end+1] = LMIC.pingSetAns & ~MCMD_PING_ANS_RFU;
dudmuck	0:f2716e543d97	1554	end += 2;
dudmuck	0:f2716e543d97	1555	LMIC.pingSetAns = 0;
dudmuck	0:f2716e543d97	1556	}
dudmuck	0:f2716e543d97	1557	if( LMIC.snchAns ) {
dudmuck	0:f2716e543d97	1558	LMIC.frame[end+0] = MCMD_SNCH_ANS;
dudmuck	0:f2716e543d97	1559	LMIC.frame[end+1] = LMIC.snchAns & ~MCMD_SNCH_ANS_RFU;
dudmuck	0:f2716e543d97	1560	end += 2;
dudmuck	0:f2716e543d97	1561	LMIC.snchAns = 0;
dudmuck	0:f2716e543d97	1562	}
dudmuck	0:f2716e543d97	1563	ASSERT(end <= OFF_DAT_OPTS+16);
dudmuck	0:f2716e543d97	1564
dudmuck	0:f2716e543d97	1565	u1_t flen = end + (txdata ? 5+dlen : 4);
dudmuck	0:f2716e543d97	1566	if( flen > MAX_LEN_FRAME ) {
dudmuck	0:f2716e543d97	1567	// Options and payload too big - delay payload
dudmuck	0:f2716e543d97	1568	txdata = 0;
dudmuck	0:f2716e543d97	1569	flen = end+4;
dudmuck	0:f2716e543d97	1570	}
dudmuck	0:f2716e543d97	1571	LMIC.frame[OFF_DAT_HDR] = HDR_FTYPE_DAUP \| HDR_MAJOR_V1;
dudmuck	0:f2716e543d97	1572	LMIC.frame[OFF_DAT_FCT] = (LMIC.dnConf \| LMIC.adrEnabled
dudmuck	0:f2716e543d97	1573	\| (LMIC.adrAckReq >= 0 ? FCT_ADRARQ : 0)
dudmuck	0:f2716e543d97	1574	\| (end-OFF_DAT_OPTS));
dudmuck	0:f2716e543d97	1575	os_wlsbf4(LMIC.frame+OFF_DAT_ADDR, LMIC.devaddr);
dudmuck	0:f2716e543d97	1576
dudmuck	0:f2716e543d97	1577	if( LMIC.txCnt == 0 ) {
dudmuck	0:f2716e543d97	1578	LMIC.seqnoUp += 1;
dudmuck	0:f2716e543d97	1579	DO_DEVDB(LMIC.seqnoUp,seqnoUp);
dudmuck	0:f2716e543d97	1580	} else {
dudmuck	0:f2716e543d97	1581	EV(devCond, INFO, (e_.reason = EV::devCond_t::RE_TX,
dudmuck	0:f2716e543d97	1582	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1583	e_.info = LMIC.seqnoUp-1,
dudmuck	0:f2716e543d97	1584	e_.info2 = ((LMIC.txCnt+1) \|
dudmuck	0:f2716e543d97	1585	(DRADJUST[LMIC.txCnt+1] << 8) \|
dudmuck	0:f2716e543d97	1586	((LMIC.datarate\|DR_PAGE)<<16))));
dudmuck	0:f2716e543d97	1587	}
dudmuck	0:f2716e543d97	1588	os_wlsbf2(LMIC.frame+OFF_DAT_SEQNO, LMIC.seqnoUp-1);
dudmuck	0:f2716e543d97	1589
dudmuck	0:f2716e543d97	1590	// Clear pending DN confirmation
dudmuck	0:f2716e543d97	1591	LMIC.dnConf = 0;
dudmuck	0:f2716e543d97	1592
dudmuck	0:f2716e543d97	1593	if( txdata ) {
dudmuck	0:f2716e543d97	1594	if( LMIC.pendTxConf ) {
dudmuck	0:f2716e543d97	1595	// Confirmed only makes sense if we have a payload (or at least a port)
dudmuck	0:f2716e543d97	1596	LMIC.frame[OFF_DAT_HDR] = HDR_FTYPE_DCUP \| HDR_MAJOR_V1;
dudmuck	0:f2716e543d97	1597	if( LMIC.txCnt == 0 ) LMIC.txCnt = 1;
dudmuck	0:f2716e543d97	1598	}
dudmuck	0:f2716e543d97	1599	LMIC.frame[end] = LMIC.pendTxPort;
dudmuck	0:f2716e543d97	1600	os_copyMem(LMIC.frame+end+1, LMIC.pendTxData, dlen);
dudmuck	0:f2716e543d97	1601	aes_cipher(LMIC.pendTxPort==0 ? LMIC.nwkKey : LMIC.artKey,
dudmuck	0:f2716e543d97	1602	LMIC.devaddr, LMIC.seqnoUp-1,
dudmuck	0:f2716e543d97	1603	/up/0, LMIC.frame+end+1, dlen);
dudmuck	0:f2716e543d97	1604	}
dudmuck	0:f2716e543d97	1605	aes_appendMic(LMIC.nwkKey, LMIC.devaddr, LMIC.seqnoUp-1, /up/0, LMIC.frame, flen-4);
dudmuck	0:f2716e543d97	1606
dudmuck	0:f2716e543d97	1607	EV(dfinfo, DEBUG, (e_.deveui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1608	e_.devaddr = LMIC.devaddr,
dudmuck	0:f2716e543d97	1609	e_.seqno = LMIC.seqnoUp-1,
dudmuck	0:f2716e543d97	1610	e_.flags = (LMIC.pendTxPort < 0 ? EV::dfinfo_t::NOPORT : EV::dfinfo_t::NOP),
dudmuck	0:f2716e543d97	1611	e_.mic = Base::lsbf4(&LMIC.frame[flen-4]),
dudmuck	0:f2716e543d97	1612	e_.hdr = LMIC.frame[LORA::OFF_DAT_HDR],
dudmuck	0:f2716e543d97	1613	e_.fct = LMIC.frame[LORA::OFF_DAT_FCT],
dudmuck	0:f2716e543d97	1614	e_.port = LMIC.pendTxPort,
dudmuck	0:f2716e543d97	1615	e_.plen = txdata ? dlen : 0,
dudmuck	0:f2716e543d97	1616	e_.opts.length = end-LORA::OFF_DAT_OPTS,
dudmuck	0:f2716e543d97	1617	memcpy(&e_.opts[0], LMIC.frame+LORA::OFF_DAT_OPTS, end-LORA::OFF_DAT_OPTS)));
dudmuck	0:f2716e543d97	1618	LMIC.dataLen = flen;
dudmuck	0:f2716e543d97	1619	}
dudmuck	0:f2716e543d97	1620
dudmuck	0:f2716e543d97	1621
dudmuck	0:f2716e543d97	1622	// Callback from HAL during scan mode or when job timer expires.
dudmuck	0:f2716e543d97	1623	static void onBcnRx (xref2osjob_t job) {
dudmuck	0:f2716e543d97	1624	// If we arrive via job timer make sure to put radio to rest.
dudmuck	0:f2716e543d97	1625	os_radio(RADIO_RST);
dudmuck	0:f2716e543d97	1626	os_clearCallback(&LMIC.osjob);
dudmuck	0:f2716e543d97	1627	if( LMIC.dataLen == 0 ) {
dudmuck	0:f2716e543d97	1628	// Nothing received - timeout
dudmuck	0:f2716e543d97	1629	LMIC.opmode &= ~(OP_SCAN \| OP_TRACK);
dudmuck	0:f2716e543d97	1630	reportEvent(EV_SCAN_TIMEOUT);
dudmuck	0:f2716e543d97	1631	return;
dudmuck	0:f2716e543d97	1632	}
dudmuck	0:f2716e543d97	1633	if( decodeBeacon() <= 0 ) {
dudmuck	0:f2716e543d97	1634	// Something is wrong with the beacon - continue scan
dudmuck	0:f2716e543d97	1635	LMIC.dataLen = 0;
dudmuck	0:f2716e543d97	1636	os_radio(RADIO_RXON);
dudmuck	0:f2716e543d97	1637	os_setTimedCallback(&LMIC.osjob, LMIC.bcninfo.txtime, FUNC_ADDR(onBcnRx));
dudmuck	0:f2716e543d97	1638	return;
dudmuck	0:f2716e543d97	1639	}
dudmuck	0:f2716e543d97	1640	// Found our 1st beacon
dudmuck	0:f2716e543d97	1641	// We don't have a previous beacon to calc some drift - assume
dudmuck	0:f2716e543d97	1642	// an max error of 13ms = 128sec*100ppm which is roughly +/-100ppm
dudmuck	0:f2716e543d97	1643	calcBcnRxWindowFromMillis(13,1);
dudmuck	0:f2716e543d97	1644	LMIC.opmode &= ~OP_SCAN; // turn SCAN off
dudmuck	0:f2716e543d97	1645	LMIC.opmode \|= OP_TRACK; // auto enable tracking
dudmuck	0:f2716e543d97	1646	reportEvent(EV_BEACON_FOUND); // can be disabled in callback
dudmuck	0:f2716e543d97	1647	}
dudmuck	0:f2716e543d97	1648
dudmuck	0:f2716e543d97	1649
dudmuck	0:f2716e543d97	1650	// Enable receiver to listen to incoming beacons
dudmuck	0:f2716e543d97	1651	// netid defines when scan stops (any or specific beacon)
dudmuck	0:f2716e543d97	1652	// This mode ends with events: EV_SCAN_TIMEOUT/EV_SCAN_BEACON
dudmuck	0:f2716e543d97	1653	// Implicitely cancels any pending TX/RX transaction.
dudmuck	0:f2716e543d97	1654	// Also cancels an onpoing joining procedure.
dudmuck	0:f2716e543d97	1655	static void startScan (void) {
dudmuck	0:f2716e543d97	1656	ASSERT(LMIC.devaddr!=0 && (LMIC.opmode & OP_JOINING)==0);
dudmuck	0:f2716e543d97	1657	if( (LMIC.opmode & OP_SHUTDOWN) != 0 )
dudmuck	0:f2716e543d97	1658	return;
dudmuck	0:f2716e543d97	1659	// Cancel onging TX/RX transaction
dudmuck	0:f2716e543d97	1660	LMIC.txCnt = LMIC.dnConf = LMIC.bcninfo.flags = 0;
dudmuck	0:f2716e543d97	1661	LMIC.opmode = (LMIC.opmode \| OP_SCAN) & ~(OP_TXRXPEND);
dudmuck	0:f2716e543d97	1662	setBcnRxParams();
dudmuck	0:f2716e543d97	1663	LMIC.rxtime = LMIC.bcninfo.txtime = os_getTime() + sec2osticks(BCN_INTV_sec+1);
dudmuck	0:f2716e543d97	1664	os_setTimedCallback(&LMIC.osjob, LMIC.rxtime, FUNC_ADDR(onBcnRx));
dudmuck	0:f2716e543d97	1665	os_radio(RADIO_RXON);
dudmuck	0:f2716e543d97	1666	}
dudmuck	0:f2716e543d97	1667
dudmuck	0:f2716e543d97	1668
dudmuck	0:f2716e543d97	1669	bit_t LMIC_enableTracking (u1_t tryBcnInfo) {
dudmuck	0:f2716e543d97	1670	if( (LMIC.opmode & (OP_SCAN\|OP_TRACK\|OP_SHUTDOWN)) != 0 )
dudmuck	0:f2716e543d97	1671	return 0; // already in progress or failed to enable
dudmuck	0:f2716e543d97	1672	// If BCN info requested from NWK then app has to take are
dudmuck	0:f2716e543d97	1673	// of sending data up so that MCMD_BCNI_REQ can be attached.
dudmuck	0:f2716e543d97	1674	if( (LMIC.bcninfoTries = tryBcnInfo) == 0 )
dudmuck	0:f2716e543d97	1675	startScan();
dudmuck	0:f2716e543d97	1676	return 1; // enabled
dudmuck	0:f2716e543d97	1677	}
dudmuck	0:f2716e543d97	1678
dudmuck	0:f2716e543d97	1679
dudmuck	0:f2716e543d97	1680	void LMIC_disableTracking (void) {
dudmuck	0:f2716e543d97	1681	LMIC.opmode &= ~(OP_SCAN\|OP_TRACK);
dudmuck	0:f2716e543d97	1682	LMIC.bcninfoTries = 0;
dudmuck	0:f2716e543d97	1683	engineUpdate();
dudmuck	0:f2716e543d97	1684	}
dudmuck	0:f2716e543d97	1685
dudmuck	0:f2716e543d97	1686
dudmuck	0:f2716e543d97	1687	// ================================================================================
dudmuck	0:f2716e543d97	1688	//
dudmuck	0:f2716e543d97	1689	// Join stuff
dudmuck	0:f2716e543d97	1690	//
dudmuck	0:f2716e543d97	1691	// ================================================================================
dudmuck	0:f2716e543d97	1692
dudmuck	0:f2716e543d97	1693	static void buildJoinRequest (u1_t ftype) {
dudmuck	0:f2716e543d97	1694	// Do not use pendTxData since we might have a pending
dudmuck	0:f2716e543d97	1695	// user level frame in there. Use RX holding area instead.
dudmuck	0:f2716e543d97	1696	xref2u1_t d = LMIC.frame;
dudmuck	0:f2716e543d97	1697	d[OFF_JR_HDR] = ftype;
dudmuck	0:f2716e543d97	1698	os_getArtEui(d + OFF_JR_ARTEUI);
dudmuck	0:f2716e543d97	1699	os_getDevEui(d + OFF_JR_DEVEUI);
dudmuck	0:f2716e543d97	1700	os_wlsbf2(d + OFF_JR_DEVNONCE, LMIC.devNonce);
dudmuck	0:f2716e543d97	1701	aes_appendMic0(d, OFF_JR_MIC);
dudmuck	0:f2716e543d97	1702
dudmuck	0:f2716e543d97	1703	EV(joininfo,INFO,(e_.deveui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1704	e_.arteui = MAIN::CDEV->getArtEui(),
dudmuck	0:f2716e543d97	1705	e_.nonce = LMIC.devNonce,
dudmuck	0:f2716e543d97	1706	e_.oldaddr = LMIC.devaddr,
dudmuck	0:f2716e543d97	1707	e_.mic = Base::lsbf4(&d[LORA::OFF_JR_MIC]),
dudmuck	0:f2716e543d97	1708	e_.reason = ((LMIC.opmode & OP_REJOIN) != 0
dudmuck	0:f2716e543d97	1709	? EV::joininfo_t::REJOIN_REQUEST
dudmuck	0:f2716e543d97	1710	: EV::joininfo_t::REQUEST)));
dudmuck	0:f2716e543d97	1711	LMIC.dataLen = LEN_JR;
dudmuck	0:f2716e543d97	1712	LMIC.devNonce++;
dudmuck	0:f2716e543d97	1713	DO_DEVDB(LMIC.devNonce,devNonce);
dudmuck	0:f2716e543d97	1714	}
dudmuck	0:f2716e543d97	1715
dudmuck	0:f2716e543d97	1716	static void startJoining (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1717	reportEvent(EV_JOINING);
dudmuck	0:f2716e543d97	1718	}
dudmuck	0:f2716e543d97	1719
dudmuck	0:f2716e543d97	1720	// Start join procedure if not already joined.
dudmuck	0:f2716e543d97	1721	bit_t LMIC_startJoining (void) {
dudmuck	0:f2716e543d97	1722	if( LMIC.devaddr == 0 ) {
dudmuck	0:f2716e543d97	1723	// There should be no TX/RX going on
dudmuck	0:f2716e543d97	1724	ASSERT((LMIC.opmode & (OP_POLL\|OP_TXRXPEND)) == 0);
dudmuck	0:f2716e543d97	1725	// Lift any previous duty limitation
dudmuck	0:f2716e543d97	1726	LMIC.globalDutyRate = 0;
dudmuck	0:f2716e543d97	1727	// Cancel scanning
dudmuck	0:f2716e543d97	1728	LMIC.opmode &= ~(OP_SCAN\|OP_REJOIN\|OP_LINKDEAD\|OP_NEXTCHNL);
dudmuck	0:f2716e543d97	1729	// Setup state
dudmuck	0:f2716e543d97	1730	LMIC.rejoinCnt = LMIC.txCnt = LMIC.pendTxConf = 0;
dudmuck	0:f2716e543d97	1731	initJoinLoop();
dudmuck	0:f2716e543d97	1732	LMIC.opmode \|= OP_JOINING;
dudmuck	0:f2716e543d97	1733	// reportEvent will call engineUpdate which then starts sending JOIN REQUESTS
dudmuck	0:f2716e543d97	1734	os_setCallback(&LMIC.osjob, FUNC_ADDR(startJoining));
dudmuck	0:f2716e543d97	1735	return 1;
dudmuck	0:f2716e543d97	1736	}
dudmuck	0:f2716e543d97	1737	return 0; // already joined
dudmuck	0:f2716e543d97	1738	}
dudmuck	0:f2716e543d97	1739
dudmuck	0:f2716e543d97	1740
dudmuck	0:f2716e543d97	1741	// ================================================================================
dudmuck	0:f2716e543d97	1742	//
dudmuck	0:f2716e543d97	1743	//
dudmuck	0:f2716e543d97	1744	//
dudmuck	0:f2716e543d97	1745	// ================================================================================
dudmuck	0:f2716e543d97	1746
dudmuck	0:f2716e543d97	1747	static void processPingRx (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1748	if( LMIC.dataLen != 0 ) {
dudmuck	0:f2716e543d97	1749	LMIC.txrxFlags = TXRX_PING;
dudmuck	0:f2716e543d97	1750	if( decodeFrame() ) {
dudmuck	0:f2716e543d97	1751	reportEvent(EV_RXCOMPLETE);
dudmuck	0:f2716e543d97	1752	return;
dudmuck	0:f2716e543d97	1753	}
dudmuck	0:f2716e543d97	1754	}
dudmuck	0:f2716e543d97	1755	// Pick next ping slot
dudmuck	0:f2716e543d97	1756	engineUpdate();
dudmuck	0:f2716e543d97	1757	}
dudmuck	0:f2716e543d97	1758
dudmuck	0:f2716e543d97	1759
dudmuck	0:f2716e543d97	1760	static bit_t processDnData (void) {
dudmuck	0:f2716e543d97	1761	ASSERT((LMIC.opmode & OP_TXRXPEND)!=0);
dudmuck	0:f2716e543d97	1762
dudmuck	0:f2716e543d97	1763	if( LMIC.dataLen == 0 ) {
dudmuck	0:f2716e543d97	1764	norx:
dudmuck	0:f2716e543d97	1765	if( LMIC.txCnt != 0 ) {
dudmuck	0:f2716e543d97	1766	if( LMIC.txCnt < TXCONF_ATTEMPTS ) {
dudmuck	0:f2716e543d97	1767	LMIC.txCnt += 1;
dudmuck	0:f2716e543d97	1768	setDrTxpow(DRCHG_NOACK, lowerDR(LMIC.datarate, DRADJUST[LMIC.txCnt]), KEEP_TXPOW);
dudmuck	0:f2716e543d97	1769	// Schedule another retransmission
dudmuck	0:f2716e543d97	1770	txDelay(LMIC.rxtime, RETRY_PERIOD_secs);
dudmuck	0:f2716e543d97	1771	LMIC.opmode &= ~OP_TXRXPEND;
dudmuck	0:f2716e543d97	1772	engineUpdate();
dudmuck	0:f2716e543d97	1773	return 1;
dudmuck	0:f2716e543d97	1774	}
dudmuck	0:f2716e543d97	1775	LMIC.txrxFlags = TXRX_NACK \| TXRX_NOPORT;
dudmuck	0:f2716e543d97	1776	} else {
dudmuck	0:f2716e543d97	1777	// Nothing received - implies no port
dudmuck	0:f2716e543d97	1778	LMIC.txrxFlags = TXRX_NOPORT;
dudmuck	0:f2716e543d97	1779	}
dudmuck	0:f2716e543d97	1780	if( LMIC.adrAckReq != LINK_CHECK_OFF )
dudmuck	0:f2716e543d97	1781	LMIC.adrAckReq += 1;
dudmuck	0:f2716e543d97	1782	LMIC.dataBeg = LMIC.dataLen = 0;
dudmuck	0:f2716e543d97	1783	txcomplete:
dudmuck	0:f2716e543d97	1784	LMIC.opmode &= ~(OP_TXDATA\|OP_TXRXPEND);
dudmuck	0:f2716e543d97	1785	if( (LMIC.txrxFlags & (TXRX_DNW1\|TXRX_DNW2\|TXRX_PING)) != 0 && (LMIC.opmode & OP_LINKDEAD) != 0 ) {
dudmuck	0:f2716e543d97	1786	LMIC.opmode &= ~OP_LINKDEAD;
dudmuck	0:f2716e543d97	1787	reportEvent(EV_LINK_ALIVE);
dudmuck	0:f2716e543d97	1788	}
dudmuck	0:f2716e543d97	1789	reportEvent(EV_TXCOMPLETE);
dudmuck	0:f2716e543d97	1790	// If we haven't heard from NWK in a while although we asked for a sign
dudmuck	0:f2716e543d97	1791	// assume link is dead - notify application and keep going
dudmuck	0:f2716e543d97	1792	if( LMIC.adrAckReq > LINK_CHECK_DEAD ) {
dudmuck	0:f2716e543d97	1793	// We haven't heard from NWK for some time although we
dudmuck	0:f2716e543d97	1794	// asked for a response for some time - assume we're disconnected. Lower DR one notch.
dudmuck	0:f2716e543d97	1795	EV(devCond, ERR, (e_.reason = EV::devCond_t::LINK_DEAD,
dudmuck	0:f2716e543d97	1796	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1797	e_.info = LMIC.adrAckReq));
dudmuck	0:f2716e543d97	1798	setDrTxpow(DRCHG_NOADRACK, decDR((dr_t)LMIC.datarate), KEEP_TXPOW);
dudmuck	0:f2716e543d97	1799	LMIC.adrAckReq = LINK_CHECK_CONT;
dudmuck	0:f2716e543d97	1800	LMIC.opmode \|= OP_REJOIN\|OP_LINKDEAD;
dudmuck	0:f2716e543d97	1801	reportEvent(EV_LINK_DEAD);
dudmuck	0:f2716e543d97	1802	}
dudmuck	0:f2716e543d97	1803	// If this falls to zero the NWK did not answer our MCMD_BCNI_REQ commands - try full scan
dudmuck	0:f2716e543d97	1804	if( LMIC.bcninfoTries > 0 ) {
dudmuck	0:f2716e543d97	1805	if( (LMIC.opmode & OP_TRACK) != 0 ) {
dudmuck	0:f2716e543d97	1806	reportEvent(EV_BEACON_FOUND);
dudmuck	0:f2716e543d97	1807	LMIC.bcninfoTries = 0;
dudmuck	0:f2716e543d97	1808	}
dudmuck	0:f2716e543d97	1809	else if( --LMIC.bcninfoTries == 0 ) {
dudmuck	0:f2716e543d97	1810	startScan(); // NWK did not answer - try scan
dudmuck	0:f2716e543d97	1811	}
dudmuck	0:f2716e543d97	1812	}
dudmuck	0:f2716e543d97	1813	return 1;
dudmuck	0:f2716e543d97	1814	}
dudmuck	0:f2716e543d97	1815	if( !decodeFrame() ) {
dudmuck	0:f2716e543d97	1816	if( (LMIC.txrxFlags & TXRX_DNW1) != 0 )
dudmuck	0:f2716e543d97	1817	return 0;
dudmuck	0:f2716e543d97	1818	goto norx;
dudmuck	0:f2716e543d97	1819	}
dudmuck	0:f2716e543d97	1820	goto txcomplete;
dudmuck	0:f2716e543d97	1821	}
dudmuck	0:f2716e543d97	1822
dudmuck	0:f2716e543d97	1823
dudmuck	0:f2716e543d97	1824	static void processBeacon (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1825	ostime_t lasttx = LMIC.bcninfo.txtime; // save here - decodeBeacon might overwrite
dudmuck	0:f2716e543d97	1826	u1_t flags = LMIC.bcninfo.flags;
dudmuck	0:f2716e543d97	1827	ev_t ev;
dudmuck	0:f2716e543d97	1828
dudmuck	0:f2716e543d97	1829	if( LMIC.dataLen != 0 && decodeBeacon() >= 1 ) {
dudmuck	0:f2716e543d97	1830	ev = EV_BEACON_TRACKED;
dudmuck	0:f2716e543d97	1831	if( (flags & (BCN_PARTIAL\|BCN_FULL)) == 0 ) {
dudmuck	0:f2716e543d97	1832	// We don't have a previous beacon to calc some drift - assume
dudmuck	0:f2716e543d97	1833	// an max error of 13ms = 128sec*100ppm which is roughly +/-100ppm
dudmuck	0:f2716e543d97	1834	calcBcnRxWindowFromMillis(13,0);
dudmuck	0:f2716e543d97	1835	goto rev;
dudmuck	0:f2716e543d97	1836	}
dudmuck	0:f2716e543d97	1837	// We have a previous BEACON to calculate some drift
dudmuck	0:f2716e543d97	1838	s2_t drift = BCN_INTV_osticks - (LMIC.bcninfo.txtime - lasttx);
dudmuck	0:f2716e543d97	1839	if( LMIC.missedBcns > 0 ) {
dudmuck	0:f2716e543d97	1840	drift = LMIC.drift + (drift - LMIC.drift) / (LMIC.missedBcns+1);
dudmuck	0:f2716e543d97	1841	}
dudmuck	0:f2716e543d97	1842	if( (LMIC.bcninfo.flags & BCN_NODRIFT) == 0 ) {
dudmuck	0:f2716e543d97	1843	s2_t diff = LMIC.drift - drift;
dudmuck	0:f2716e543d97	1844	if( diff < 0 ) diff = -diff;
dudmuck	0:f2716e543d97	1845	LMIC.lastDriftDiff = diff;
dudmuck	0:f2716e543d97	1846	if( LMIC.maxDriftDiff < diff )
dudmuck	0:f2716e543d97	1847	LMIC.maxDriftDiff = diff;
dudmuck	0:f2716e543d97	1848	LMIC.bcninfo.flags &= ~BCN_NODDIFF;
dudmuck	0:f2716e543d97	1849	}
dudmuck	0:f2716e543d97	1850	LMIC.drift = drift;
dudmuck	0:f2716e543d97	1851	LMIC.missedBcns = LMIC.rejoinCnt = 0;
dudmuck	0:f2716e543d97	1852	LMIC.bcninfo.flags &= ~BCN_NODRIFT;
dudmuck	0:f2716e543d97	1853	EV(devCond,INFO,(e_.reason = EV::devCond_t::CLOCK_DRIFT,
dudmuck	0:f2716e543d97	1854	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1855	e_.info = drift,
dudmuck	0:f2716e543d97	1856	e_.info2 = /occasion BEACON/0));
dudmuck	0:f2716e543d97	1857	ASSERT((LMIC.bcninfo.flags & (BCN_PARTIAL\|BCN_FULL)) != 0);
dudmuck	0:f2716e543d97	1858	} else {
dudmuck	0:f2716e543d97	1859	ev = EV_BEACON_MISSED;
dudmuck	0:f2716e543d97	1860	LMIC.bcninfo.txtime += BCN_INTV_osticks - LMIC.drift;
dudmuck	0:f2716e543d97	1861	LMIC.bcninfo.time += BCN_INTV_sec;
dudmuck	0:f2716e543d97	1862	LMIC.missedBcns++;
dudmuck	0:f2716e543d97	1863	// Delay any possible TX after surmised beacon - it's there although we missed it
dudmuck	0:f2716e543d97	1864	txDelay(LMIC.bcninfo.txtime + BCN_RESERVE_osticks, 4);
dudmuck	0:f2716e543d97	1865	if( LMIC.missedBcns > MAX_MISSED_BCNS )
dudmuck	0:f2716e543d97	1866	LMIC.opmode \|= OP_REJOIN; // try if we can roam to another network
dudmuck	0:f2716e543d97	1867	if( LMIC.bcnRxsyms > MAX_RXSYMS ) {
dudmuck	0:f2716e543d97	1868	LMIC.opmode &= ~(OP_TRACK\|OP_PINGABLE\|OP_PINGINI\|OP_REJOIN);
dudmuck	0:f2716e543d97	1869	reportEvent(EV_LOST_TSYNC);
dudmuck	0:f2716e543d97	1870	return;
dudmuck	0:f2716e543d97	1871	}
dudmuck	0:f2716e543d97	1872	}
dudmuck	0:f2716e543d97	1873	LMIC.bcnRxtime = LMIC.bcninfo.txtime + BCN_INTV_osticks - calcRxWindow(0,DR_BCN);
dudmuck	0:f2716e543d97	1874	LMIC.bcnRxsyms = LMIC.rxsyms;
dudmuck	0:f2716e543d97	1875	rev:
dudmuck	0:f2716e543d97	1876	#ifdef CFG_us915
dudmuck	0:f2716e543d97	1877	LMIC.bcnChnl = (LMIC.bcnChnl+1) & 7;
dudmuck	0:f2716e543d97	1878	#endif
dudmuck	0:f2716e543d97	1879	if( (LMIC.opmode & OP_PINGINI) != 0 )
dudmuck	0:f2716e543d97	1880	rxschedInit(&LMIC.ping); // note: reuses LMIC.frame buffer!
dudmuck	0:f2716e543d97	1881	reportEvent(ev);
dudmuck	0:f2716e543d97	1882	}
dudmuck	0:f2716e543d97	1883
dudmuck	0:f2716e543d97	1884
dudmuck	0:f2716e543d97	1885	static void startRxBcn (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1886	LMIC.osjob.func = FUNC_ADDR(processBeacon);
dudmuck	0:f2716e543d97	1887	os_radio(RADIO_RX);
dudmuck	0:f2716e543d97	1888	}
dudmuck	0:f2716e543d97	1889
dudmuck	0:f2716e543d97	1890
dudmuck	0:f2716e543d97	1891	static void startRxPing (xref2osjob_t osjob) {
dudmuck	0:f2716e543d97	1892	LMIC.osjob.func = FUNC_ADDR(processPingRx);
dudmuck	0:f2716e543d97	1893	os_radio(RADIO_RX);
dudmuck	0:f2716e543d97	1894	}
dudmuck	0:f2716e543d97	1895
dudmuck	0:f2716e543d97	1896
dudmuck	0:f2716e543d97	1897	// Decide what to do next for the MAC layer of a device
dudmuck	0:f2716e543d97	1898	static void engineUpdate (void) {
dudmuck	0:f2716e543d97	1899	// Check for ongoing state: scan or TX/RX transaction
dudmuck	0:f2716e543d97	1900	if( (LMIC.opmode & (OP_SCAN\|OP_TXRXPEND\|OP_SHUTDOWN)) != 0 )
dudmuck	0:f2716e543d97	1901	return;
dudmuck	0:f2716e543d97	1902
dudmuck	0:f2716e543d97	1903	if( LMIC.devaddr == 0 && (LMIC.opmode & OP_JOINING) == 0 ) {
dudmuck	0:f2716e543d97	1904	LMIC_startJoining();
dudmuck	0:f2716e543d97	1905	return;
dudmuck	0:f2716e543d97	1906	}
dudmuck	0:f2716e543d97	1907
dudmuck	0:f2716e543d97	1908	ostime_t now = os_getTime();
dudmuck	0:f2716e543d97	1909	ostime_t rxtime = 0;
dudmuck	0:f2716e543d97	1910	ostime_t txbeg = 0;
dudmuck	0:f2716e543d97	1911
dudmuck	0:f2716e543d97	1912	if( (LMIC.opmode & OP_TRACK) != 0 ) {
dudmuck	0:f2716e543d97	1913	// We are tracking a beacon
dudmuck	0:f2716e543d97	1914	ASSERT( now + RX_RAMPUP - LMIC.bcnRxtime <= 0 );
dudmuck	0:f2716e543d97	1915	rxtime = LMIC.bcnRxtime - RX_RAMPUP;
dudmuck	0:f2716e543d97	1916	}
dudmuck	0:f2716e543d97	1917
dudmuck	0:f2716e543d97	1918	if( (LMIC.opmode & (OP_JOINING\|OP_REJOIN\|OP_TXDATA\|OP_POLL)) != 0 ) {
dudmuck	0:f2716e543d97	1919	// Need to TX some data...
dudmuck	0:f2716e543d97	1920	// Assuming txChnl points to channel which first becomes available again.
dudmuck	0:f2716e543d97	1921	bit_t jacc = ((LMIC.opmode & (OP_JOINING\|OP_REJOIN)) != 0 ? 1 : 0);
dudmuck	0:f2716e543d97	1922	// Find next suitable channel and return availability time
dudmuck	0:f2716e543d97	1923	if( (LMIC.opmode & OP_NEXTCHNL) != 0 ) {
dudmuck	0:f2716e543d97	1924	txbeg = LMIC.txend = nextTx(now);
dudmuck	0:f2716e543d97	1925	LMIC.opmode &= ~OP_NEXTCHNL;
dudmuck	0:f2716e543d97	1926	} else {
dudmuck	0:f2716e543d97	1927	txbeg = LMIC.txend;
dudmuck	0:f2716e543d97	1928	}
dudmuck	0:f2716e543d97	1929	// Delayed TX or waiting for duty cycle?
dudmuck	0:f2716e543d97	1930	if( (LMIC.globalDutyRate != 0 \|\| (LMIC.opmode & OP_RNDTX) != 0) && (txbeg - LMIC.globalDutyAvail) < 0 )
dudmuck	0:f2716e543d97	1931	txbeg = LMIC.globalDutyAvail;
dudmuck	0:f2716e543d97	1932	// If we're tracking a beacon...
dudmuck	0:f2716e543d97	1933	// then make sure TX-RX transaction is complete before beacon
dudmuck	0:f2716e543d97	1934	if( (LMIC.opmode & OP_TRACK) != 0 &&
dudmuck	0:f2716e543d97	1935	txbeg + (jacc ? JOIN_GUARD_osticks : TXRX_GUARD_osticks) - rxtime > 0 ) {
dudmuck	0:f2716e543d97	1936	// Not enough time to complete TX-RX before beacon - postpone after beacon.
dudmuck	0:f2716e543d97	1937	// In order to avoid clustering of postponed TX right after beacon randomize start!
dudmuck	0:f2716e543d97	1938	txDelay(rxtime + BCN_RESERVE_osticks, 16);
dudmuck	0:f2716e543d97	1939	txbeg = 0;
dudmuck	0:f2716e543d97	1940	goto checkrx;
dudmuck	0:f2716e543d97	1941	}
dudmuck	0:f2716e543d97	1942	// Earliest possible time vs overhead to setup radio
dudmuck	0:f2716e543d97	1943	if( txbeg - (now + TX_RAMPUP) < 0 ) {
dudmuck	0:f2716e543d97	1944	// We could send right now!
dudmuck	0:f2716e543d97	1945	txbeg = now;
dudmuck	0:f2716e543d97	1946	dr_t txdr = (dr_t)LMIC.datarate;
dudmuck	0:f2716e543d97	1947	if( jacc ) {
dudmuck	0:f2716e543d97	1948	u1_t ftype;
dudmuck	0:f2716e543d97	1949	if( (LMIC.opmode & OP_REJOIN) != 0 ) {
dudmuck	0:f2716e543d97	1950	txdr = lowerDR(txdr, LMIC.rejoinCnt);
dudmuck	0:f2716e543d97	1951	ftype = HDR_FTYPE_REJOIN;
dudmuck	0:f2716e543d97	1952	} else {
dudmuck	0:f2716e543d97	1953	ftype = HDR_FTYPE_JREQ;
dudmuck	0:f2716e543d97	1954	}
dudmuck	0:f2716e543d97	1955	buildJoinRequest(ftype);
dudmuck	0:f2716e543d97	1956	LMIC.osjob.func = FUNC_ADDR(jreqDone);
dudmuck	0:f2716e543d97	1957	} else {
dudmuck	0:f2716e543d97	1958	if( LMIC.seqnoDn >= 0xFFFFFF80 ) {
dudmuck	0:f2716e543d97	1959	// Imminent roll over - proactively reset MAC
dudmuck	0:f2716e543d97	1960	EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_ROLL_OVER,
dudmuck	0:f2716e543d97	1961	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1962	e_.info = LMIC.seqnoDn,
dudmuck	0:f2716e543d97	1963	e_.info2 = 0));
dudmuck	0:f2716e543d97	1964	// Device has to react! NWK will not roll over and just stop sending.
dudmuck	0:f2716e543d97	1965	// Thus, we have N frames to detect a possible lock up.
dudmuck	0:f2716e543d97	1966	reset:
dudmuck	0:f2716e543d97	1967	os_setCallback(&LMIC.osjob, FUNC_ADDR(runReset));
dudmuck	0:f2716e543d97	1968	return;
dudmuck	0:f2716e543d97	1969	}
dudmuck	0:f2716e543d97	1970	if( (LMIC.txCnt==0 && LMIC.seqnoUp == 0xFFFFFFFF) ) {
dudmuck	0:f2716e543d97	1971	// Roll over of up seq counter
dudmuck	0:f2716e543d97	1972	EV(specCond, ERR, (e_.reason = EV::specCond_t::UPSEQNO_ROLL_OVER,
dudmuck	0:f2716e543d97	1973	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	1974	e_.info2 = LMIC.seqnoUp));
dudmuck	0:f2716e543d97	1975	// Do not run RESET event callback from here!
dudmuck	0:f2716e543d97	1976	// App code might do some stuff after send unaware of RESET.
dudmuck	0:f2716e543d97	1977	goto reset;
dudmuck	0:f2716e543d97	1978	}
dudmuck	0:f2716e543d97	1979	buildDataFrame();
dudmuck	0:f2716e543d97	1980	LMIC.osjob.func = FUNC_ADDR(updataDone);
dudmuck	0:f2716e543d97	1981	}
dudmuck	0:f2716e543d97	1982	LMIC.rps = setCr(updr2rps(txdr), (cr_t)LMIC.errcr);
dudmuck	0:f2716e543d97	1983	LMIC.dndr = txdr; // carry TX datarate (can be != LMIC.datarate) over to txDone/setupRx1
dudmuck	0:f2716e543d97	1984	LMIC.opmode = (LMIC.opmode & ~(OP_POLL\|OP_RNDTX)) \| OP_TXRXPEND \| OP_NEXTCHNL;
dudmuck	0:f2716e543d97	1985	updateTx(txbeg);
dudmuck	0:f2716e543d97	1986	os_radio(RADIO_TX);
dudmuck	0:f2716e543d97	1987	return;
dudmuck	0:f2716e543d97	1988	}
dudmuck	0:f2716e543d97	1989	// Cannot yet TX
dudmuck	0:f2716e543d97	1990	if( (LMIC.opmode & OP_TRACK) == 0 )
dudmuck	0:f2716e543d97	1991	goto txdelay; // We don't track the beacon - nothing else to do - so wait for the time to TX
dudmuck	0:f2716e543d97	1992	// Consider RX tasks
dudmuck	0:f2716e543d97	1993	if( txbeg == 0 ) // zero indicates no TX pending
dudmuck	0:f2716e543d97	1994	txbeg += 1; // TX delayed by one tick (insignificant amount of time)
dudmuck	0:f2716e543d97	1995	} else {
dudmuck	0:f2716e543d97	1996	// No TX pending - no scheduled RX
dudmuck	0:f2716e543d97	1997	if( (LMIC.opmode & OP_TRACK) == 0 )
dudmuck	0:f2716e543d97	1998	return;
dudmuck	0:f2716e543d97	1999	}
dudmuck	0:f2716e543d97	2000
dudmuck	0:f2716e543d97	2001	// Are we pingable?
dudmuck	0:f2716e543d97	2002	checkrx:
dudmuck	0:f2716e543d97	2003	if( (LMIC.opmode & OP_PINGINI) != 0 ) {
dudmuck	0:f2716e543d97	2004	// One more RX slot in this beacon period?
dudmuck	0:f2716e543d97	2005	if( rxschedNext(&LMIC.ping, now+RX_RAMPUP) ) {
dudmuck	0:f2716e543d97	2006	if( txbeg != 0 && (txbeg - LMIC.ping.rxtime) < 0 )
dudmuck	0:f2716e543d97	2007	goto txdelay;
dudmuck	0:f2716e543d97	2008	LMIC.rxsyms = LMIC.ping.rxsyms;
dudmuck	0:f2716e543d97	2009	LMIC.rxtime = LMIC.ping.rxtime;
dudmuck	0:f2716e543d97	2010	LMIC.freq = LMIC.ping.freq;
dudmuck	0:f2716e543d97	2011	LMIC.rps = dndr2rps(LMIC.ping.dr);
dudmuck	0:f2716e543d97	2012	LMIC.dataLen = 0;
dudmuck	0:f2716e543d97	2013	ASSERT(LMIC.rxtime - now+RX_RAMPUP >= 0 );
dudmuck	0:f2716e543d97	2014	os_setTimedCallback(&LMIC.osjob, LMIC.rxtime - RX_RAMPUP, FUNC_ADDR(startRxPing));
dudmuck	0:f2716e543d97	2015	return;
dudmuck	0:f2716e543d97	2016	}
dudmuck	0:f2716e543d97	2017	// no - just wait for the beacon
dudmuck	0:f2716e543d97	2018	}
dudmuck	0:f2716e543d97	2019
dudmuck	0:f2716e543d97	2020	if( txbeg != 0 && (txbeg - rxtime) < 0 )
dudmuck	0:f2716e543d97	2021	goto txdelay;
dudmuck	0:f2716e543d97	2022
dudmuck	0:f2716e543d97	2023	setBcnRxParams();
dudmuck	0:f2716e543d97	2024	LMIC.rxsyms = LMIC.bcnRxsyms;
dudmuck	0:f2716e543d97	2025	LMIC.rxtime = LMIC.bcnRxtime;
dudmuck	0:f2716e543d97	2026	if( now - rxtime >= 0 ) {
dudmuck	0:f2716e543d97	2027	LMIC.osjob.func = FUNC_ADDR(processBeacon);
dudmuck	0:f2716e543d97	2028	os_radio(RADIO_RX);
dudmuck	0:f2716e543d97	2029	return;
dudmuck	0:f2716e543d97	2030	}
dudmuck	0:f2716e543d97	2031	os_setTimedCallback(&LMIC.osjob, rxtime, FUNC_ADDR(startRxBcn));
dudmuck	0:f2716e543d97	2032	return;
dudmuck	0:f2716e543d97	2033
dudmuck	0:f2716e543d97	2034	txdelay:
dudmuck	0:f2716e543d97	2035	EV(devCond, INFO, (e_.reason = EV::devCond_t::TX_DELAY,
dudmuck	0:f2716e543d97	2036	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	2037	e_.info = osticks2ms(txbeg-now),
dudmuck	0:f2716e543d97	2038	e_.info2 = LMIC.seqnoUp-1));
dudmuck	0:f2716e543d97	2039	os_setTimedCallback(&LMIC.osjob, txbeg-TX_RAMPUP, FUNC_ADDR(runEngineUpdate));
dudmuck	0:f2716e543d97	2040	}
dudmuck	0:f2716e543d97	2041
dudmuck	0:f2716e543d97	2042
dudmuck	0:f2716e543d97	2043	void LMIC_setAdrMode (bit_t enabled) {
dudmuck	0:f2716e543d97	2044	LMIC.adrEnabled = enabled ? FCT_ADREN : 0;
dudmuck	0:f2716e543d97	2045	}
dudmuck	0:f2716e543d97	2046
dudmuck	0:f2716e543d97	2047
dudmuck	0:f2716e543d97	2048	// Should we have/need an ext. API like this?
dudmuck	0:f2716e543d97	2049	void LMIC_setDrTxpow (dr_t dr, s1_t txpow) {
dudmuck	0:f2716e543d97	2050	setDrTxpow(DRCHG_SET, dr, txpow);
dudmuck	0:f2716e543d97	2051	}
dudmuck	0:f2716e543d97	2052
dudmuck	0:f2716e543d97	2053
dudmuck	0:f2716e543d97	2054	void LMIC_shutdown (void) {
dudmuck	0:f2716e543d97	2055	os_clearCallback(&LMIC.osjob);
dudmuck	0:f2716e543d97	2056	os_radio(RADIO_RST);
dudmuck	0:f2716e543d97	2057	LMIC.opmode \|= OP_SHUTDOWN;
dudmuck	0:f2716e543d97	2058	}
dudmuck	0:f2716e543d97	2059
dudmuck	0:f2716e543d97	2060
dudmuck	0:f2716e543d97	2061	void LMIC_reset (void) {
dudmuck	0:f2716e543d97	2062	EV(devCond, INFO, (e_.reason = EV::devCond_t::LMIC_EV,
dudmuck	0:f2716e543d97	2063	e_.eui = MAIN::CDEV->getEui(),
dudmuck	0:f2716e543d97	2064	e_.info = EV_RESET));
dudmuck	0:f2716e543d97	2065	os_radio(RADIO_RST);
dudmuck	0:f2716e543d97	2066	os_clearCallback(&LMIC.osjob);
dudmuck	0:f2716e543d97	2067
dudmuck	0:f2716e543d97	2068	os_clearMem((xref2u1_t)&LMIC,SIZEOFEXPR(LMIC));
dudmuck	0:f2716e543d97	2069	LMIC.devaddr = 0;
dudmuck	0:f2716e543d97	2070	LMIC.devNonce = os_getRndU2();
dudmuck	0:f2716e543d97	2071	LMIC.opmode = OP_NONE;
dudmuck	0:f2716e543d97	2072	LMIC.errcr = CR_4_5;
dudmuck	0:f2716e543d97	2073	LMIC.adrEnabled = FCT_ADREN;
dudmuck	0:f2716e543d97	2074	LMIC.dn2Dr = DR_DNW2; // we need this for 2nd DN window of join accept
dudmuck	0:f2716e543d97	2075	LMIC.dn2Freq = FREQ_DNW2; // ditto
dudmuck	0:f2716e543d97	2076	LMIC.ping.freq = FREQ_PING; // defaults for ping
dudmuck	0:f2716e543d97	2077	LMIC.ping.dr = DR_PING; // ditto
dudmuck	0:f2716e543d97	2078	LMIC.ping.intvExp = 0xFF;
dudmuck	0:f2716e543d97	2079	#if defined(CFG_us915)
dudmuck	0:f2716e543d97	2080	initDefaultChannels();
dudmuck	0:f2716e543d97	2081	#endif
dudmuck	0:f2716e543d97	2082	DO_DEVDB(LMIC.devaddr, devaddr);
dudmuck	0:f2716e543d97	2083	DO_DEVDB(LMIC.devNonce, devNonce);
dudmuck	0:f2716e543d97	2084	DO_DEVDB(LMIC.dn2Dr, dn2Dr);
dudmuck	0:f2716e543d97	2085	DO_DEVDB(LMIC.dn2Freq, dn2Freq);
dudmuck	0:f2716e543d97	2086	DO_DEVDB(LMIC.ping.freq, pingFreq);
dudmuck	0:f2716e543d97	2087	DO_DEVDB(LMIC.ping.dr, pingDr);
dudmuck	0:f2716e543d97	2088	DO_DEVDB(LMIC.ping.intvExp, pingIntvExp);
dudmuck	0:f2716e543d97	2089	}
dudmuck	0:f2716e543d97	2090
dudmuck	0:f2716e543d97	2091
dudmuck	0:f2716e543d97	2092	void LMIC_init (void) {
dudmuck	0:f2716e543d97	2093	LMIC.opmode = OP_SHUTDOWN;
dudmuck	0:f2716e543d97	2094	}
dudmuck	0:f2716e543d97	2095
dudmuck	0:f2716e543d97	2096
dudmuck	0:f2716e543d97	2097	void LMIC_clrTxData (void) {
dudmuck	0:f2716e543d97	2098	LMIC.opmode &= ~(OP_TXDATA\|OP_TXRXPEND\|OP_POLL);
dudmuck	0:f2716e543d97	2099	LMIC.pendTxLen = 0;
dudmuck	0:f2716e543d97	2100	if( (LMIC.opmode & (OP_JOINING\|OP_SCAN)) != 0 ) // do not interfere with JOINING
dudmuck	0:f2716e543d97	2101	return;
dudmuck	0:f2716e543d97	2102	os_clearCallback(&LMIC.osjob);
dudmuck	0:f2716e543d97	2103	os_radio(RADIO_RST);
dudmuck	0:f2716e543d97	2104	engineUpdate();
dudmuck	0:f2716e543d97	2105	}
dudmuck	0:f2716e543d97	2106
dudmuck	0:f2716e543d97	2107
dudmuck	0:f2716e543d97	2108	void LMIC_setTxData (void) {
dudmuck	0:f2716e543d97	2109	LMIC.opmode \|= OP_TXDATA;
dudmuck	0:f2716e543d97	2110	if( (LMIC.opmode & OP_JOINING) == 0 )
dudmuck	0:f2716e543d97	2111	LMIC.txCnt = 0; // cancel any ongoing TX/RX retries
dudmuck	0:f2716e543d97	2112	engineUpdate();
dudmuck	0:f2716e543d97	2113	}
dudmuck	0:f2716e543d97	2114
dudmuck	0:f2716e543d97	2115
dudmuck	0:f2716e543d97	2116	//
dudmuck	0:f2716e543d97	2117	int LMIC_setTxData2 (u1_t port, xref2u1_t data, u1_t dlen, u1_t confirmed) {
dudmuck	0:f2716e543d97	2118	if( dlen > SIZEOFEXPR(LMIC.pendTxData) )
dudmuck	0:f2716e543d97	2119	return -2;
dudmuck	0:f2716e543d97	2120	if( data != (xref2u1_t)0 )
dudmuck	0:f2716e543d97	2121	os_copyMem(LMIC.pendTxData, data, dlen);
dudmuck	0:f2716e543d97	2122	LMIC.pendTxConf = confirmed;
dudmuck	0:f2716e543d97	2123	LMIC.pendTxPort = port;
dudmuck	0:f2716e543d97	2124	LMIC.pendTxLen = dlen;
dudmuck	0:f2716e543d97	2125	LMIC_setTxData();
dudmuck	0:f2716e543d97	2126	return 0;
dudmuck	0:f2716e543d97	2127	}
dudmuck	0:f2716e543d97	2128
dudmuck	0:f2716e543d97	2129
dudmuck	0:f2716e543d97	2130	// Send a payload-less message to signal device is alive
dudmuck	0:f2716e543d97	2131	void LMIC_sendAlive (void) {
dudmuck	0:f2716e543d97	2132	LMIC.opmode \|= OP_POLL;
dudmuck	0:f2716e543d97	2133	engineUpdate();
dudmuck	0:f2716e543d97	2134	}
dudmuck	0:f2716e543d97	2135
dudmuck	0:f2716e543d97	2136
dudmuck	0:f2716e543d97	2137	// Check if other networks are around.
dudmuck	0:f2716e543d97	2138	void LMIC_tryRejoin (void) {
dudmuck	0:f2716e543d97	2139	LMIC.opmode \|= OP_REJOIN;
dudmuck	0:f2716e543d97	2140	engineUpdate();
dudmuck	0:f2716e543d97	2141	}
dudmuck	0:f2716e543d97	2142
dudmuck	0:f2716e543d97	2143	//! \brief Setup given session keys
dudmuck	0:f2716e543d97	2144	//! and put the MAC in a state as if
dudmuck	0:f2716e543d97	2145	//! a join request/accept would have negotiated just these keys.
dudmuck	0:f2716e543d97	2146	//! It is crucial that the combinations `devaddr/nwkkey` and `devaddr/artkey`
dudmuck	0:f2716e543d97	2147	//! are unique within the network identified by `netid`.
dudmuck	0:f2716e543d97	2148	//! NOTE: on Harvard architectures when session keys are in flash:
dudmuck	0:f2716e543d97	2149	//! Caller has to fill in LMIC.{nwk,art}Key before and pass {nwk,art}Key are NULL
dudmuck	0:f2716e543d97	2150	//! \param netid a 24 bit number describing the network id this device is using
dudmuck	0:f2716e543d97	2151	//! \param devaddr the 32 bit session address of the device. It is strongly recommended
dudmuck	0:f2716e543d97	2152	//! to ensure that different devices use different numbers with high probability.
dudmuck	0:f2716e543d97	2153	//! \param nwkKey the 16 byte network session key used for message integrity.
dudmuck	0:f2716e543d97	2154	//! If NULL the caller has copied the key into `LMIC.nwkKey` before.
dudmuck	0:f2716e543d97	2155	//! \param artKey the 16 byte application router session key used for message confidentiality.
dudmuck	0:f2716e543d97	2156	//! If NULL the caller has copied the key into `LMIC.artKey` before.
dudmuck	0:f2716e543d97	2157	void LMIC_setSession (u4_t netid, devaddr_t devaddr, xref2u1_t nwkKey, xref2u1_t artKey) {
dudmuck	0:f2716e543d97	2158	LMIC.netid = netid;
dudmuck	0:f2716e543d97	2159	LMIC.devaddr = devaddr;
dudmuck	0:f2716e543d97	2160	if( nwkKey != (xref2u1_t)0 )
dudmuck	0:f2716e543d97	2161	os_copyMem(LMIC.nwkKey, nwkKey, 16);
dudmuck	0:f2716e543d97	2162	if( artKey != (xref2u1_t)0 )
dudmuck	0:f2716e543d97	2163	os_copyMem(LMIC.artKey, artKey, 16);
dudmuck	0:f2716e543d97	2164
dudmuck	0:f2716e543d97	2165	#if defined(CFG_eu868)
dudmuck	0:f2716e543d97	2166	initDefaultChannels(0);
dudmuck	0:f2716e543d97	2167	#endif
dudmuck	0:f2716e543d97	2168
dudmuck	0:f2716e543d97	2169	LMIC.opmode &= ~(OP_JOINING\|OP_TRACK\|OP_REJOIN\|OP_TXRXPEND\|OP_PINGINI);
dudmuck	0:f2716e543d97	2170	LMIC.opmode \|= OP_NEXTCHNL;
dudmuck	0:f2716e543d97	2171	stateJustJoined();
dudmuck	0:f2716e543d97	2172	DO_DEVDB(LMIC.netid, netid);
dudmuck	0:f2716e543d97	2173	DO_DEVDB(LMIC.devaddr, devaddr);
dudmuck	0:f2716e543d97	2174	DO_DEVDB(LMIC.nwkKey, nwkkey);
dudmuck	0:f2716e543d97	2175	DO_DEVDB(LMIC.artKey, artkey);
dudmuck	0:f2716e543d97	2176	DO_DEVDB(LMIC.seqnoUp, seqnoUp);
dudmuck	0:f2716e543d97	2177	DO_DEVDB(LMIC.seqnoDn, seqnoDn);
dudmuck	0:f2716e543d97	2178	}
dudmuck	0:f2716e543d97	2179
dudmuck	0:f2716e543d97	2180	// Enable/disable link check validation.
dudmuck	0:f2716e543d97	2181	// LMIC sets the ADRACKREQ bit in UP frames if there were no DN frames
dudmuck	0:f2716e543d97	2182	// for a while. It expects the network to provide a DN message to prove
dudmuck	0:f2716e543d97	2183	// connectivity with a span of UP frames. If this no such prove is coming
dudmuck	0:f2716e543d97	2184	// then the datarate is lowered and a LINK_DEAD event is generated.
dudmuck	0:f2716e543d97	2185	// This mode can be disabled and no connectivity prove (ADRACKREQ) is requested
dudmuck	0:f2716e543d97	2186	// nor is the datarate changed.
dudmuck	0:f2716e543d97	2187	// This must be called only if a session is established (e.g. after EV_JOINED)
dudmuck	0:f2716e543d97	2188	void LMIC_setLinkCheckMode (bit_t enabled) {
dudmuck	0:f2716e543d97	2189	LMIC.adrChanged = 0;
dudmuck	0:f2716e543d97	2190	LMIC.adrAckReq = enabled ? LINK_CHECK_INIT : LINK_CHECK_OFF;
dudmuck	0:f2716e543d97	2191	}
dudmuck	0:f2716e543d97	2192
dudmuck	0:f2716e543d97	2193

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

LoRaWAN network configuration for end-device

AppEUI

example C code

DevEUI

example C code

AppKey (aka DevKey)

example C code

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

Information

transmit power limits

lmic.cpp@5:e4ba433f0ac1, 2015-07-17 (annotated)

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