-
Notifications
You must be signed in to change notification settings - Fork 0
/
RH_RF24.h
1164 lines (1069 loc) · 63.8 KB
/
RH_RF24.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
// RH_RF24.h
// Author: Mike McCauley ([email protected])
// Copyright (C) 2014 Mike McCauley
// $Id: RH_RF24.h,v 1.18 2017/07/25 05:26:50 mikem Exp $
//
// Supports RF24/RF26 and RFM24/RFM26 modules in FIFO mode
// also Si4464/63/62/61/60-A1
// Si4063 is the same but Tx only
//
// Per http://www.hoperf.cn/upload/rf/RFM24.pdf
// and http://www.hoperf.cn/upload/rf/RFM26.pdf
// Sigh: the HopeRF documentation is utter rubbish: full of errors and incomplete. The Si446x docs are better:
// http://www.silabs.com/Support%20Documents/TechnicalDocs/Si4464-63-61-60.pdf
// http://www.silabs.com/Support%20Documents/TechnicalDocs/AN626.pdf
// http://www.silabs.com/Support%20Documents/TechnicalDocs/AN627.pdf
// http://www.silabs.com/Support%20Documents/TechnicalDocs/AN647.pdf
// http://www.silabs.com/Support%20Documents/TechnicalDocs/AN633.pdf
// http://www.silabs.com/Support%20Documents/TechnicalDocs/AN736.pdf
// http://nicerf.com/manage/upfile/indexbanner/635231050196868750.pdf (API description)
// http://www.silabs.com/Support%20Documents/Software/Si446x%20RX_HOP%20PLL%20Calculator.xlsx
#ifndef RH_RF24_h
#define RH_RF24_h
#include <RHGenericSPI.h>
#include <RHSPIDriver.h>
// This is the maximum number of interrupts the driver can support
// Most Arduinos can handle 2, Megas can handle more
#define RH_RF24_NUM_INTERRUPTS 3
// Maximum payload length the RF24 can support, limited by our 1 octet message length
#define RH_RF24_MAX_PAYLOAD_LEN 255
// The length of the headers we add.
// The headers are inside the RF24's payload
#define RH_RF24_HEADER_LEN 4
// This is the maximum message length that can be supported by this driver.
// Can be pre-defined to a smaller size (to save SRAM) prior to including this header
// Here we allow for message length 4 bytes of address and header and payload to be included in payload size limit.
#ifndef RH_RF24_MAX_MESSAGE_LEN
#define RH_RF24_MAX_MESSAGE_LEN (RH_RF24_MAX_PAYLOAD_LEN - RH_RF24_HEADER_LEN - 1)
#endif
// Max number of times we will try to read CTS from the radio
#define RH_RF24_CTS_RETRIES 2500
// RF24/RF26 API commands from table 10
// also Si446X API DESCRIPTIONS table 1
#define RH_RF24_CMD_NOP 0x00
#define RH_RF24_CMD_PART_INFO 0x01
#define RH_RF24_CMD_POWER_UP 0x02
#define RH_RF24_CMD_PATCH_IMAGE 0x04
#define RH_RF24_CMD_FUNC_INFO 0x10
#define RH_RF24_CMD_SET_PROPERTY 0x11
#define RH_RF24_CMD_GET_PROPERTY 0x12
#define RH_RF24_CMD_GPIO_PIN_CFG 0x13
#define RH_RF24_CMD_GET_ADC_READING 0x14
#define RH_RF24_CMD_FIFO_INFO 0x15
#define RH_RF24_CMD_PACKET_INFO 0x16
#define RH_RF24_CMD_IRCAL 0x17
#define RH_RF24_CMD_PROTOCOL_CFG 0x18
#define RH_RF24_CMD_GET_INT_STATUS 0x20
#define RH_RF24_CMD_GET_PH_STATUS 0x21
#define RH_RF24_CMD_GET_MODEM_STATUS 0x22
#define RH_RF24_CMD_GET_CHIP_STATUS 0x23
#define RH_RF24_CMD_START_TX 0x31
#define RH_RF24_CMD_START_RX 0x32
#define RH_RF24_CMD_REQUEST_DEVICE_STATE 0x33
#define RH_RF24_CMD_CHANGE_STATE 0x34
#define RH_RF24_CMD_RX_HOP 0x36
#define RH_RF24_CMD_READ_BUF 0x44
#define RH_RF24_CMD_FAST_RESPONSE_A 0x50
#define RH_RF24_CMD_FAST_RESPONSE_B 0x51
#define RH_RF24_CMD_FAST_RESPONSE_C 0x53
#define RH_RF24_CMD_FAST_RESPONSE_D 0x57
#define RH_RF24_CMD_TX_FIFO_WRITE 0x66
#define RH_RF24_CMD_RX_FIFO_READ 0x77
// The Clear To Send signal from the radio
#define RH_RF24_REPLY_CTS 0xff
//#define RH_RF24_CMD_START_TX 0x31
#define RH_RF24_CONDITION_TX_COMPLETE_STATE 0xf0
#define RH_RF24_CONDITION_RETRANSMIT_NO 0x00
#define RH_RF24_CONDITION_RETRANSMIT_YES 0x04
#define RH_RF24_CONDITION_START_IMMEDIATE 0x00
#define RH_RF24_CONDITION_START_AFTER_WUT 0x01
//#define RH_RF24_CMD_START_RX 0x32
#define RH_RF24_CONDITION_RX_START_IMMEDIATE 0x00
//#define RH_RF24_CMD_REQUEST_DEVICE_STATE 0x33
#define RH_RF24_DEVICE_STATE_NO_CHANGE 0x00
#define RH_RF24_DEVICE_STATE_SLEEP 0x01
#define RH_RF24_DEVICE_STATE_SPI_ACTIVE 0x02
#define RH_RF24_DEVICE_STATE_READY 0x03
#define RH_RF24_DEVICE_STATE_ALSO_READY 0x04
#define RH_RF24_DEVICE_STATE_TUNE_TX 0x05
#define RH_RF24_DEVICE_STATE_TUNE_RX 0x06
#define RH_RF24_DEVICE_STATE_TX 0x07
#define RH_RF24_DEVICE_STATE_RX 0x08
// Properties for API Description AN625 Section 2.2
#define RH_RF24_PROPERTY_GLOBAL_XO_TUNE 0x0000
#define RH_RF24_PROPERTY_GLOBAL_CLK_CFG 0x0001
#define RH_RF24_PROPERTY_GLOBAL_LOW_BATT_THRESH 0x0002
#define RH_RF24_PROPERTY_GLOBAL_CONFIG 0x0003
#define RH_RF24_PROPERTY_GLOBAL_WUT_CONFIG 0x0004
#define RH_RF24_PROPERTY_GLOBAL_WUT_M_15_8 0x0005
#define RH_RF24_PROPERTY_GLOBAL_WUT_M_7_0 0x0006
#define RH_RF24_PROPERTY_GLOBAL_WUT_R 0x0007
#define RH_RF24_PROPERTY_GLOBAL_WUT_LDC 0x0008
#define RH_RF24_PROPERTY_INT_CTL_ENABLE 0x0100
#define RH_RF24_PROPERTY_INT_CTL_PH_ENABLE 0x0101
#define RH_RF24_PROPERTY_INT_CTL_MODEM_ENABLE 0x0102
#define RH_RF24_PROPERTY_INT_CTL_CHIP_ENABLE 0x0103
#define RH_RF24_PROPERTY_FRR_CTL_A_MODE 0x0200
#define RH_RF24_PROPERTY_FRR_CTL_B_MODE 0x0201
#define RH_RF24_PROPERTY_FRR_CTL_C_MODE 0x0202
#define RH_RF24_PROPERTY_FRR_CTL_D_MODE 0x0203
#define RH_RF24_PROPERTY_PREAMBLE_TX_LENGTH 0x1000
#define RH_RF24_PROPERTY_PREAMBLE_CONFIG_STD_1 0x1001
#define RH_RF24_PROPERTY_PREAMBLE_CONFIG_NSTD 0x1002
#define RH_RF24_PROPERTY_PREAMBLE_CONFIG_STD_2 0x1003
#define RH_RF24_PROPERTY_PREAMBLE_CONFIG 0x1004
#define RH_RF24_PROPERTY_PREAMBLE_PATTERN_31_24 0x1005
#define RH_RF24_PROPERTY_PREAMBLE_PATTERN_23_16 0x1006
#define RH_RF24_PROPERTY_PREAMBLE_PATTERN_15_8 0x1007
#define RH_RF24_PROPERTY_PREAMBLE_PATTERN_7_0 0x1008
#define RH_RF24_PROPERTY_SYNC_CONFIG 0x1100
#define RH_RF24_PROPERTY_SYNC_BITS_31_24 0x1101
#define RH_RF24_PROPERTY_SYNC_BITS_23_16 0x1102
#define RH_RF24_PROPERTY_SYNC_BITS_15_8 0x1103
#define RH_RF24_PROPERTY_SYNC_BITS_7_0 0x1104
#define RH_RF24_PROPERTY_PKT_CRC_CONFIG 0x1200
#define RH_RF24_PROPERTY_PKT_CONFIG1 0x1206
#define RH_RF24_PROPERTY_PKT_LEN 0x1208
#define RH_RF24_PROPERTY_PKT_LEN_FIELD_SOURCE 0x1209
#define RH_RF24_PROPERTY_PKT_LEN_ADJUST 0x120a
#define RH_RF24_PROPERTY_PKT_TX_THRESHOLD 0x120b
#define RH_RF24_PROPERTY_PKT_RX_THRESHOLD 0x120c
#define RH_RF24_PROPERTY_PKT_FIELD_1_LENGTH_12_8 0x120d
#define RH_RF24_PROPERTY_PKT_FIELD_1_LENGTH_7_0 0x120e
#define RH_RF24_PROPERTY_PKT_FIELD_1_CONFIG 0x120f
#define RH_RF24_PROPERTY_PKT_FIELD_1_CRC_CONFIG 0x1210
#define RH_RF24_PROPERTY_PKT_FIELD_2_LENGTH_12_8 0x1211
#define RH_RF24_PROPERTY_PKT_FIELD_2_LENGTH_7_0 0x1212
#define RH_RF24_PROPERTY_PKT_FIELD_2_CONFIG 0x1213
#define RH_RF24_PROPERTY_PKT_FIELD_2_CRC_CONFIG 0x1214
#define RH_RF24_PROPERTY_PKT_FIELD_3_LENGTH_12_8 0x1215
#define RH_RF24_PROPERTY_PKT_FIELD_3_LENGTH_7_0 0x1216
#define RH_RF24_PROPERTY_PKT_FIELD_3_CONFIG 0x1217
#define RH_RF24_PROPERTY_PKT_FIELD_3_CRC_CONFIG 0x1218
#define RH_RF24_PROPERTY_PKT_FIELD_4_LENGTH_12_8 0x1219
#define RH_RF24_PROPERTY_PKT_FIELD_4_LENGTH_7_0 0x121a
#define RH_RF24_PROPERTY_PKT_FIELD_4_CONFIG 0x121b
#define RH_RF24_PROPERTY_PKT_FIELD_4_CRC_CONFIG 0x121c
#define RH_RF24_PROPERTY_PKT_FIELD_5_LENGTH_12_8 0x121d
#define RH_RF24_PROPERTY_PKT_FIELD_5_LENGTH_7_0 0x121e
#define RH_RF24_PROPERTY_PKT_FIELD_5_CONFIG 0x121f
#define RH_RF24_PROPERTY_PKT_FIELD_5_CRC_CONFIG 0x1220
#define RH_RF24_PROPERTY_PKT_RX_FIELD_1_LENGTH_12_8 0x1221
#define RH_RF24_PROPERTY_PKT_RX_FIELD_1_LENGTH_7_0 0x1222
#define RH_RF24_PROPERTY_PKT_RX_FIELD_1_CONFIG 0x1223
#define RH_RF24_PROPERTY_PKT_RX_FIELD_1_CRC_CONFIG 0x1224
#define RH_RF24_PROPERTY_PKT_RX_FIELD_2_LENGTH_12_8 0x1225
#define RH_RF24_PROPERTY_PKT_RX_FIELD_2_LENGTH_7_0 0x1226
#define RH_RF24_PROPERTY_PKT_RX_FIELD_2_CONFIG 0x1227
#define RH_RF24_PROPERTY_PKT_RX_FIELD_2_CRC_CONFIG 0x1228
#define RH_RF24_PROPERTY_PKT_RX_FIELD_3_LENGTH_12_8 0x1229
#define RH_RF24_PROPERTY_PKT_RX_FIELD_3_LENGTH_7_0 0x122a
#define RH_RF24_PROPERTY_PKT_RX_FIELD_3_CONFIG 0x122b
#define RH_RF24_PROPERTY_PKT_RX_FIELD_3_CRC_CONFIG 0x122c
#define RH_RF24_PROPERTY_PKT_RX_FIELD_4_LENGTH_12_8 0x122d
#define RH_RF24_PROPERTY_PKT_RX_FIELD_4_LENGTH_7_0 0x122e
#define RH_RF24_PROPERTY_PKT_RX_FIELD_4_CONFIG 0x122f
#define RH_RF24_PROPERTY_PKT_RX_FIELD_4_CRC_CONFIG 0x1230
#define RH_RF24_PROPERTY_PKT_RX_FIELD_5_LENGTH_12_8 0x1231
#define RH_RF24_PROPERTY_PKT_RX_FIELD_5_LENGTH_7_0 0x1232
#define RH_RF24_PROPERTY_PKT_RX_FIELD_5_CONFIG 0x1233
#define RH_RF24_PROPERTY_PKT_RX_FIELD_5_CRC_CONFIG 0x1234
#define RH_RF24_PROPERTY_MODEM_MOD_TYPE 0x2000
#define RH_RF24_PROPERTY_MODEM_MAP_CONTROL 0x2001
#define RH_RF24_PROPERTY_MODEM_DSM_CTRL 0x2002
#define RH_RF24_PROPERTY_MODEM_DATA_RATE_2 0x2003
#define RH_RF24_PROPERTY_MODEM_DATA_RATE_1 0x2004
#define RH_RF24_PROPERTY_MODEM_DATA_RATE_0 0x2005
#define RH_RF24_PROPERTY_MODEM_TX_NCO_MODE_3 0x2006
#define RH_RF24_PROPERTY_MODEM_TX_NCO_MODE_2 0x2007
#define RH_RF24_PROPERTY_MODEM_TX_NCO_MODE_1 0x2008
#define RH_RF24_PROPERTY_MODEM_TX_NCO_MODE_0 0x2009
#define RH_RF24_PROPERTY_MODEM_FREQ_DEV_2 0x200a
#define RH_RF24_PROPERTY_MODEM_FREQ_DEV_1 0x200b
#define RH_RF24_PROPERTY_MODEM_FREQ_DEV_0 0x200c
#define RH_RF24_PROPERTY_MODEM_TX_RAMP_DELAY 0x2018
#define RH_RF24_PROPERTY_MODEM_MDM_CTRL 0x2019
#define RH_RF24_PROPERTY_MODEM_IF_CONTROL 0x201a
#define RH_RF24_PROPERTY_MODEM_IF_FREQ_2 0x201b
#define RH_RF24_PROPERTY_MODEM_IF_FREQ_1 0x201c
#define RH_RF24_PROPERTY_MODEM_IF_FREQ_0 0x201d
#define RH_RF24_PROPERTY_MODEM_DECIMATION_CFG1 0x201e
#define RH_RF24_PROPERTY_MODEM_DECIMATION_CFG0 0x201f
#define RH_RF24_PROPERTY_MODEM_BCR_OSR_1 0x2022
#define RH_RF24_PROPERTY_MODEM_BCR_OSR_0 0x2023
#define RH_RF24_PROPERTY_MODEM_BCR_NCO_OFFSET_2 0x2024
#define RH_RF24_PROPERTY_MODEM_BCR_NCO_OFFSET_1 0x2025
#define RH_RF24_PROPERTY_MODEM_BCR_NCO_OFFSET_0 0x2026
#define RH_RF24_PROPERTY_MODEM_BCR_GAIN_1 0x2027
#define RH_RF24_PROPERTY_MODEM_BCR_GAIN_0 0x2028
#define RH_RF24_PROPERTY_MODEM_BCR_GEAR 0x2029
#define RH_RF24_PROPERTY_MODEM_BCR_MISC1 0x202a
#define RH_RF24_PROPERTY_MODEM_AFC_GEAR 0x202c
#define RH_RF24_PROPERTY_MODEM_AFC_WAIT 0x202d
#define RH_RF24_PROPERTY_MODEM_AFC_GAIN_1 0x202e
#define RH_RF24_PROPERTY_MODEM_AFC_GAIN_0 0x202f
#define RH_RF24_PROPERTY_MODEM_AFC_LIMITER_1 0x2030
#define RH_RF24_PROPERTY_MODEM_AFC_LIMITER_0 0x2031
#define RH_RF24_PROPERTY_MODEM_AFC_MISC 0x2032
#define RH_RF24_PROPERTY_MODEM_AGC_CONTROL 0x2035
#define RH_RF24_PROPERTY_MODEM_AGC_WINDOW_SIZE 0x2038
#define RH_RF24_PROPERTY_MODEM_AGC_RFPD_DECAY 0x2039
#define RH_RF24_PROPERTY_MODEM_AGC_IFPD_DECAY 0x203a
#define RH_RF24_PROPERTY_MODEM_FSK4_GAIN1 0x203b
#define RH_RF24_PROPERTY_MODEM_FSK4_GAIN0 0x203c
#define RH_RF24_PROPERTY_MODEM_FSK4_TH1 0x203d
#define RH_RF24_PROPERTY_MODEM_FSK4_TH0 0x203e
#define RH_RF24_PROPERTY_MODEM_FSK4_MAP 0x203f
#define RH_RF24_PROPERTY_MODEM_OOK_PDTC 0x2040
#define RH_RF24_PROPERTY_MODEM_OOK_CNT1 0x2042
#define RH_RF24_PROPERTY_MODEM_OOK_MISC 0x2043
#define RH_RF24_PROPERTY_MODEM_RAW_SEARCH 0x2044
#define RH_RF24_PROPERTY_MODEM_RAW_CONTROL 0x2045
#define RH_RF24_PROPERTY_MODEM_RAW_EYE_1 0x2046
#define RH_RF24_PROPERTY_MODEM_RAW_EYE_0 0x2047
#define RH_RF24_PROPERTY_MODEM_ANT_DIV_MODE 0x2048
#define RH_RF24_PROPERTY_MODEM_ANT_DIV_CONTROL 0x2049
#define RH_RF24_PROPERTY_MODEM_RSSI_THRESH 0x204a
#define RH_RF24_PROPERTY_MODEM_RSSI_JUMP_THRESH 0x204b
#define RH_RF24_PROPERTY_MODEM_RSSI_CONTROL 0x204c
#define RH_RF24_PROPERTY_MODEM_RSSI_CONTROL2 0x204d
#define RH_RF24_PROPERTY_MODEM_RSSI_COMP 0x204e
#define RH_RF24_PROPERTY_MODEM_ANT_DIV_CONT 0x2049
#define RH_RF24_PROPERTY_MODEM_CLKGEN_BAND 0x2051
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE13_7_0 0x2100
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE12_7_0 0x2101
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE11_7_0 0x2102
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE10_7_0 0x2103
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE9_7_0 0x2104
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE8_7_0 0x2105
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE7_7_0 0x2106
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE6_7_0 0x2107
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE5_7_0 0x2108
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE4_7_0 0x2109
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE3_7_0 0x210a
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE2_7_0 0x210b
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE1_7_0 0x210c
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE0_7_0 0x210d
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COEM0 0x210e
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COEM1 0x210f
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COEM2 0x2110
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COEM3 0x2111
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE13_7_0 0x2112
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE12_7_0 0x2113
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE11_7_0 0x2114
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE10_7_0 0x2115
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE9_7_0 0x2116
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE8_7_0 0x2117
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE7_7_0 0x2118
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE6_7_0 0x2119
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE5_7_0 0x211a
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE4_7_0 0x211b
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE3_7_0 0x211c
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE2_7_0 0x211d
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE1_7_0 0x211e
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE0_7_0 0x211f
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COEM0 0x2120
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COEM1 0x2121
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COEM2 0x2122
#define RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COEM3 0x2123
#define RH_RF24_PROPERTY_PA_MODE 0x2200
#define RH_RF24_PROPERTY_PA_PWR_LVL 0x2201
#define RH_RF24_PROPERTY_PA_BIAS_CLKDUTY 0x2202
#define RH_RF24_PROPERTY_PA_TC 0x2203
#define RH_RF24_PROPERTY_SYNTH_PFDCP_CPFF 0x2300
#define RH_RF24_PROPERTY_SYNTH_PFDCP_CPINT 0x2301
#define RH_RF24_PROPERTY_SYNTH_VCO_KV 0x2302
#define RH_RF24_PROPERTY_SYNTH_LPFILT3 0x2303
#define RH_RF24_PROPERTY_SYNTH_LPFILT2 0x2304
#define RH_RF24_PROPERTY_SYNTH_LPFILT1 0x2305
#define RH_RF24_PROPERTY_SYNTH_LPFILT0 0x2306
#define RH_RF24_PROPERTY_MATCH_VALUE_1 0x3000
#define RH_RF24_PROPERTY_MATCH_MASK_1 0x3001
#define RH_RF24_PROPERTY_MATCH_CTRL_1 0x3002
#define RH_RF24_PROPERTY_MATCH_VALUE_2 0x3003
#define RH_RF24_PROPERTY_MATCH_MASK_2 0x3004
#define RH_RF24_PROPERTY_MATCH_CTRL_2 0x3005
#define RH_RF24_PROPERTY_MATCH_VALUE_3 0x3006
#define RH_RF24_PROPERTY_MATCH_MASK_3 0x3007
#define RH_RF24_PROPERTY_MATCH_CTRL_3 0x3008
#define RH_RF24_PROPERTY_MATCH_VALUE_4 0x3009
#define RH_RF24_PROPERTY_MATCH_MASK_4 0x300a
#define RH_RF24_PROPERTY_MATCH_CTRL_4 0x300b
#define RH_RF24_PROPERTY_FREQ_CONTROL_INTE 0x4000
#define RH_RF24_PROPERTY_FREQ_CONTROL_FRAC_2 0x4001
#define RH_RF24_PROPERTY_FREQ_CONTROL_FRAC_1 0x4002
#define RH_RF24_PROPERTY_FREQ_CONTROL_FRAC_0 0x4003
#define RH_RF24_PROPERTY_FREQ_CONTROL_CHANNEL_STEP_SIZE_1 0x4004
#define RH_RF24_PROPERTY_FREQ_CONTROL_CHANNEL_STEP_SIZE_0 0x4005
#define RH_RF24_PROPERTY_FREQ_CONTROL_VCOCNT_RX_ADJ 0x4007
#define RH_RF24_PROPERTY_RX_HOP_CONTROL 0x5000
#define RH_RF24_PROPERTY_RX_HOP_TABLE_SIZE 0x5001
#define RH_RF24_PROPERTY_RX_HOP_TABLE_ENTRY_0 0x5002
//#define RH_RF24_CMD_GPIO_PIN_CFG 0x13
#define RH_RF24_GPIO_NO_CHANGE 0
#define RH_RF24_GPIO_DISABLED 1
#define RH_RF24_GPIO_LOW 2
#define RH_RF24_GPIO_HIGH 3
#define RH_RF24_GPIO_INPUT 4
#define RH_RF24_GPIO_32_KHZ_CLOCK 5
#define RH_RF24_GPIO_BOOT_CLOCK 6
#define RH_RF24_GPIO_DIVIDED_MCU_CLOCK 7
#define RH_RF24_GPIO_CTS 8
#define RH_RF24_GPIO_INV_CTS 9
#define RH_RF24_GPIO_HIGH_ON_CMD_OVERLAP 10
#define RH_RF24_GPIO_SPI_DATA_OUT 11
#define RH_RF24_GPIO_HIGH_AFTER_RESET 12
#define RH_RF24_GPIO_HIGH_AFTER_CALIBRATION 13
#define RH_RF24_GPIO_HIGH_AFTER_WUT 14
#define RH_RF24_GPIO_UNUSED_0 15
#define RH_RF24_GPIO_TX_DATA_CLOCK 16
#define RH_RF24_GPIO_RX_DATA_CLOCK 17
#define RH_RF24_GPIO_UNUSED_1 18
#define RH_RF24_GPIO_TX_DATA 19
#define RH_RF24_GPIO_RX_DATA 20
#define RH_RF24_GPIO_RX_RAW_DATA 21
#define RH_RF24_GPIO_ANTENNA_1_SWITCH 22
#define RH_RF24_GPIO_ANTENNA_2_SWITCH 23
#define RH_RF24_GPIO_VALID_PREAMBLE 24
#define RH_RF24_GPIO_INVALID_PREAMBLE 25
#define RH_RF24_GPIO_SYNC_DETECTED 26
#define RH_RF24_GPIO_RSSI_ABOVE_CAT 27
#define RH_RF24_GPIO_TX_STATE 32
#define RH_RF24_GPIO_RX_STATE 33
#define RH_RF24_GPIO_RX_FIFO_ALMOST_FULL 34
#define RH_RF24_GPIO_TX_FIFO_ALMOST_EMPTY 35
#define RH_RF24_GPIO_BATT_LOW 36
#define RH_RF24_GPIO_RSSI_ABOVE_CAT_LOW 37
#define RH_RF24_GPIO_HOP 38
#define RH_RF24_GPIO_HOP_TABLE_WRAPPED 39
// #define RH_RF24_CMD_GET_INT_STATUS 0x20
#define RH_RF24_INT_STATUS_CHIP_INT_STATUS 0x04
#define RH_RF24_INT_STATUS_MODEM_INT_STATUS 0x02
#define RH_RF24_INT_STATUS_PH_INT_STATUS 0x01
#define RH_RF24_INT_STATUS_FILTER_MATCH 0x80
#define RH_RF24_INT_STATUS_FILTER_MISS 0x40
#define RH_RF24_INT_STATUS_PACKET_SENT 0x20
#define RH_RF24_INT_STATUS_PACKET_RX 0x10
#define RH_RF24_INT_STATUS_CRC_ERROR 0x08
#define RH_RF24_INT_STATUS_TX_FIFO_ALMOST_EMPTY 0x02
#define RH_RF24_INT_STATUS_RX_FIFO_ALMOST_FULL 0x01
#define RH_RF24_INT_STATUS_INVALID_SYNC 0x20
#define RH_RF24_INT_STATUS_RSSI_JUMP 0x10
#define RH_RF24_INT_STATUS_RSSI 0x08
#define RH_RF24_INT_STATUS_INVALID_PREAMBLE 0x04
#define RH_RF24_INT_STATUS_PREAMBLE_DETECT 0x02
#define RH_RF24_INT_STATUS_SYNC_DETECT 0x01
#define RH_RF24_INT_STATUS_CAL 0x40
#define RH_RF24_INT_STATUS_FIFO_UNDERFLOW_OVERFLOW_ERROR 0x20
#define RH_RF24_INT_STATUS_STATE_CHANGE 0x10
#define RH_RF24_INT_STATUS_CMD_ERROR 0x08
#define RH_RF24_INT_STATUS_CHIP_READY 0x04
#define RH_RF24_INT_STATUS_LOW_BATT 0x02
#define RH_RF24_INT_STATUS_WUT 0x01
//#define RH_RF24_PROPERTY_GLOBAL_CLK_CFG 0x0001
#define RH_RF24_CLK_CFG_DIVIDED_CLK_EN 0x40
#define RH_RF24_CLK_CFG_DIVIDED_CLK_SEL_30 0x30
#define RH_RF24_CLK_CFG_DIVIDED_CLK_SEL_15 0x28
#define RH_RF24_CLK_CFG_DIVIDED_CLK_SEL_10 0x20
#define RH_RF24_CLK_CFG_DIVIDED_CLK_SEL_7_5 0x18
#define RH_RF24_CLK_CFG_DIVIDED_CLK_SEL_3 0x10
#define RH_RF24_CLK_CFG_DIVIDED_CLK_SEL_2 0x08
#define RH_RF24_CLK_CFG_DIVIDED_CLK_SEL_1 0x00
#define RH_RF24_CLK_CFG_CLK_32K_SEL_EXTERNAL 0x02
#define RH_RF24_CLK_CFG_CLK_32K_SEL_RC 0x01
#define RH_RF24_CLK_CFG_CLK_32K_SEL_DISABLED 0x00
//#define RH_RF24_PROPERTY_FRR_CTL_A_MODE 0x0200
//#define RH_RF24_PROPERTY_FRR_CTL_B_MODE 0x0201
//#define RH_RF24_PROPERTY_FRR_CTL_C_MODE 0x0202
//#define RH_RF24_PROPERTY_FRR_CTL_D_MODE 0x0203
#define RH_RF24_FRR_MODE_DISABLED 0
#define RH_RF24_FRR_MODE_GLOBAL_STATUS 1
#define RH_RF24_FRR_MODE_GLOBAL_INTERRUPT_PENDING 2
#define RH_RF24_FRR_MODE_PACKET_HANDLER_STATUS 3
#define RH_RF24_FRR_MODE_PACKET_HANDLER_INTERRUPT_PENDING 4
#define RH_RF24_FRR_MODE_MODEM_STATUS 5
#define RH_RF24_FRR_MODE_MODEM_INTERRUPT_PENDING 6
#define RH_RF24_FRR_MODE_CHIP_STATUS 7
#define RH_RF24_FRR_MODE_CHIP_INTERRUPT_PENDING 8
#define RH_RF24_FRR_MODE_CURRENT_STATE 9
#define RH_RF24_FRR_MODE_LATCHED_RSSI 10
//#define RH_RF24_PROPERTY_INT_CTL_ENABLE 0x0100
#define RH_RF24_CHIP_INT_STATUS_EN 0x04
#define RH_RF24_MODEM_INT_STATUS_EN 0x02
#define RH_RF24_PH_INT_STATUS_EN 0x01
//#define RH_RF24_PROPERTY_PREAMBLE_CONFIG 0x1004
#define RH_RF24_PREAMBLE_FIRST_1 0x20
#define RH_RF24_PREAMBLE_FIRST_0 0x00
#define RH_RF24_PREAMBLE_LENGTH_NIBBLES 0x00
#define RH_RF24_PREAMBLE_LENGTH_BYTES 0x10
#define RH_RF24_PREAMBLE_MAN_CONST 0x08
#define RH_RF24_PREAMBLE_MAN_ENABLE 0x02
#define RH_RF24_PREAMBLE_NON_STANDARD 0x00
#define RH_RF24_PREAMBLE_STANDARD_1010 0x01
#define RH_RF24_PREAMBLE_STANDARD_0101 0x02
//#define RH_RF24_PROPERTY_SYNC_CONFIG 0x1100
#define RH_RF24_SYNC_CONFIG_SKIP_TX 0x80
#define RH_RF24_SYNC_CONFIG_RX_ERRORS_MASK 0x70
#define RH_RF24_SYNC_CONFIG_4FSK 0x08
#define RH_RF24_SYNC_CONFIG_MANCH 0x04
#define RH_RF24_SYNC_CONFIG_LENGTH_MASK 0x03
//#define RH_RF24_PROPERTY_PKT_CRC_CONFIG 0x1200
#define RH_RF24_CRC_SEED_ALL_0S 0x00
#define RH_RF24_CRC_SEED_ALL_1S 0x80
#define RH_RF24_CRC_MASK 0x0f
#define RH_RF24_CRC_NONE 0x00
#define RH_RF24_CRC_ITU_T 0x01
#define RH_RF24_CRC_IEC_16 0x02
#define RH_RF24_CRC_BIACHEVA 0x03
#define RH_RF24_CRC_16_IBM 0x04
#define RH_RF24_CRC_CCITT 0x05
#define RH_RF24_CRC_KOOPMAN 0x06
#define RH_RF24_CRC_IEEE_802_3 0x07
#define RH_RF24_CRC_CASTAGNOLI 0x08
//#define RH_RF24_PROPERTY_PKT_CONFIG1 0x1206
#define RH_RF24_PH_FIELD_SPLIT 0x80
#define RH_RF24_PH_RX_DISABLE 0x40
#define RH_RF24_4FSK_EN 0x20
#define RH_RF24_RX_MULTI_PKT 0x10
#define RH_RF24_MANCH_POL 0x08
#define RH_RF24_CRC_INVERT 0x04
#define RH_RF24_CRC_ENDIAN 0x02
#define RH_RF24_BIT_ORDER 0x01
//#define RH_RF24_PROPERTY_PKT_FIELD_1_CONFIG 0x120f
//#define RH_RF24_PROPERTY_PKT_FIELD_2_CONFIG 0x1213
//#define RH_RF24_PROPERTY_PKT_FIELD_3_CONFIG 0x1217
//#define RH_RF24_PROPERTY_PKT_FIELD_4_CONFIG 0x121b
//#define RH_RF24_PROPERTY_PKT_FIELD_5_CONFIG 0x121f
#define RH_RF24_FIELD_CONFIG_4FSK 0x10
#define RH_RF24_FIELD_CONFIG_WHITEN 0x02
#define RH_RF24_FIELD_CONFIG_MANCH 0x01
//#define RH_RF24_PROPERTY_PKT_RX_FIELD_1_CRC_CONFIG 0x1224
//#define RH_RF24_PROPERTY_PKT_RX_FIELD_2_CRC_CONFIG 0x1228
//#define RH_RF24_PROPERTY_PKT_RX_FIELD_3_CRC_CONFIG 0x122c
//#define RH_RF24_PROPERTY_PKT_RX_FIELD_4_CRC_CONFIG 0x1230
//#define RH_RF24_PROPERTY_PKT_RX_FIELD_5_CRC_CONFIG 0x1234
#define RH_RF24_FIELD_CONFIG_CRC_START 0x80
#define RH_RF24_FIELD_CONFIG_SEND_CRC 0x20
#define RH_RF24_FIELD_CONFIG_CHECK_CRC 0x08
#define RH_RF24_FIELD_CONFIG_CRC_ENABLE 0x02
//#define RH_RF24_PROPERTY_MODEM_MOD_TYPE 0x2000
#define RH_RF24_TX_DIRECT_MODE_TYPE_SYNCHRONOUS 0x00
#define RH_RF24_TX_DIRECT_MODE_TYPE_ASYNCHRONOUS 0x80
#define RH_RF24_TX_DIRECT_MODE_GPIO0 0x00
#define RH_RF24_TX_DIRECT_MODE_GPIO1 0x20
#define RH_RF24_TX_DIRECT_MODE_GPIO2 0x40
#define RH_RF24_TX_DIRECT_MODE_GPIO3 0x60
#define RH_RF24_MOD_SOURCE_PACKET_HANDLER 0x00
#define RH_RF24_MOD_SOURCE_DIRECT_MODE 0x08
#define RH_RF24_MOD_SOURCE_RANDOM_GENERATOR 0x10
#define RH_RF24_MOD_TYPE_CW 0x00
#define RH_RF24_MOD_TYPE_OOK 0x01
#define RH_RF24_MOD_TYPE_2FSK 0x02
#define RH_RF24_MOD_TYPE_2GFSK 0x03
#define RH_RF24_MOD_TYPE_4FSK 0x04
#define RH_RF24_MOD_TYPE_4GFSK 0x05
// RH_RF24_PROPERTY_PA_MODE 0x2200
#define RH_RF24_PA_MODE_1_GROUP 0x04
#define RH_RF24_PA_MODE_2_GROUPS 0x08
#define RH_RF24_PA_MODE_CLASS_E 0x00
#define RH_RF24_PA_MODE_SWITCH_CURRENT 0x01
/////////////////////////////////////////////////////////////////////
/// \class RH_RF24 RH_RF24.h <RH_RF24.h>
/// \brief Driver to send and receive unaddressed, unreliable datagrams via an RF24 and compatible radio transceiver.
///
/// Works with
/// - Silicon Labs Si4460/1/2/3/4 transceiver chips
/// - The equivalent HopeRF RF24/25/26/27 transceiver chips
/// - HopeRF Complete modules: RFM24W/26W/27W
///
/// \par Overview
///
/// This class provides basic functions for sending and receiving unaddressed,
/// unreliable datagrams of arbitrary length to 250 octets per packet.
///
/// Manager classes may use this class to implement reliable, addressed datagrams and streams,
/// mesh routers, repeaters, translators etc.
///
/// Naturally, for any 2 radios to communicate that must be configured to use the same frequency and
/// modulation scheme.
///
/// This Driver provides an object-oriented interface for sending and receiving data messages with Hope-RF
/// RF24 and compatible radio modules, such as the RFM24W module.
///
/// The Hope-RF (http://www.hoperf.com) RF24 family is a low-cost ISM transceiver
/// chip. It supports FSK, GFSK, OOK over a wide range of frequencies and
/// programmable data rates. HopeRF also sell these chips on modules which includes
/// a crystal and antenna coupling circuits: RFM24W, RFM26W and RFM27W
///
/// This Driver provides functions for sending and receiving messages of up
/// to 250 octets on any frequency supported by the RF24, in a range of
/// predefined data rates and frequency deviations. Frequency can be set
/// to any frequency from 142.0MHz to 1050.0MHz. Caution: most modules only support a more limited
/// range of frequencies due to antenna tuning.
///
/// Up to 2 RFM24 modules can be connected to an Arduino (3 on a Mega),
/// permitting the construction of translators and frequency changers, etc.
///
/// The following modulation types are suppported with a range of modem configurations for
/// common data rates and frequency deviations:
/// - OOK On-Off Keying
/// - GFSK Gaussian Frequency Shift Keying
/// - FSK Frequency Shift Keying
///
/// Support for other RF24 features such as on-chip temperature measurement,
/// transmitter power control etc is also provided.
///
/// RH_RF24 uses interrupts to detect and handle events in the radio chip. The RF24 family has
/// TX and RX FIFOs of 64 bytes, but through the use of interrupt, the RH_RF24 driver can send longer
/// messages by filling or emptying the FIFOs on-the-fly.
///
/// Tested on Anarduino Mini http://www.anarduino.com/mini/ with arduino-1.0.5
/// on OpenSuSE 13.1. Also on Anarduino Mini with arduino-1.8.1 on Kubuntu 16.04
///
/// \par Packet Format
///
/// All messages sent and received by this RH_RF24 Driver conform to this packet format:
///
/// - 4 octets PREAMBLE (configurable)
/// - 2 octets SYNC 0x2d, 0xd4 (configurable, so you can use this as a network filter)
/// - Field containing 1 octet of message length and 2 octet CRC protecting this field
/// - Field 2 containing at least 4 octets, and 2 octet CRC protecting this field:
/// + 4 octets HEADER: (TO, FROM, ID, FLAGS)
/// + 0 to 250 octets DATA
/// + 2 octets CRC, computed on HEADER and DATA
///
/// \par Connecting RFM-24 to Arduino
///
/// For RFM24/RFM26 and Teensy 3.1 or Anarduino Mini
/// \code
/// Teensy RFM-24/RFM26
/// GND----------GND (ground in)
/// 3V3----------VCC (3.3V in)
/// interrupt 2 pin D2-----------NIRQ (interrupt request out)
/// SS pin D10----------NSEL (chip select in)
/// SCK pin D13----------SCK (SPI clock in)
/// MOSI pin D11----------SDI (SPI Data in)
/// MISO pin D12----------SDO (SPI data out)
/// D9-----------SDN (shutdown in)
/// /--GPIO0 (GPIO0 out to control transmitter antenna TX_ANT)
/// \--TX_ANT (TX antenna control in) RFM22B only
/// /--GPIO1 (GPIO1 out to control receiver antenna RX_ANT)
/// \--RX_ANT (RX antenna control in) RFM22B only
/// \endcode
/// Caution: tying the radio SDN pin to ground (though it might appear from the data sheets to make sense)
/// does not always produce a reliable radio startup. So this driver controls the SDN pin directly.
/// Note: the GPIO0-TX_ANT and GPIO1-RX_ANT connections are not required for the 11dBm RFM24W,
/// which has no antenna switch.
///
/// If you have an Arduino Zero, you should note that you cannot use Pin 2 for the interrupt line
/// (Pin 2 is for the NMI only), instead you can use any other pin (we use Pin 3) and initialise RH_RF69 like this:
/// \code
/// // Slave Select is pin 10, interrupt is Pin 3
/// RH_RF24 driver(10, 3);
/// \endcode
///
/// \par Customising and configuring
///
/// The RH_RF24 module uses a radio configuration header file to configure the basic radio operation
/// frequency and modulation scheme. The radio configuration header file must be generated with the
/// Silicon Labs Wireless Development Suite (WDS) program and \#included by RH_RF24.cpp
///
/// The library will work out of the box and without further configuring with these parameters:
/// - Si4464 or equvalent
/// - 30MHz Crytstal
/// - 434MHz base frequncy band
/// - 2GFSK modulation
/// - 5kbps data rate
/// - 10kHz deviation
/// using the radio configuration header file
/// RF24configs/radio_config_Si4464_30_434_2GFSK_5_10.h
/// which is included in RadioHead.
///
/// In order to use different frequency bands or modulation schemes, you must generate a new
/// radio configuration header file
/// with WDS, or select one of a small set of prebuilt headers from the RF24configs folder (see README in that
/// folder for details of the filename format).
///
/// To generate a new header file:
///
/// - Install Silicon Labs Wireless Development Suite (WDS) 3.2.11.0 or later
/// (Windows only, we were not able to get it to run under Wine on Linux)
/// - Run WDS
/// - Menu->Start Simulation
/// - Select radio chip type Si4464, press Select Radio
/// - Select Radio Configuration Application, press Select Application
/// - Click on Standard Packet Tx
/// - On the Frequency and Power tab, Select the Frequency, crystal frequency etc. The PA power level is irrelevant,
/// since power is set programatically
/// - On the RF parameters tab, select the modulation type and rates
/// - Press Generate Source, Save custom radio configuration header file
/// - Enter a new unique file name in the RF24configs folder in RadioHead
/// - Edit RH_RF24.cpp to use this new header file
/// - Recompile RH_RF24
///
/// \par RSSI
///
/// The RSSI (Received Signal Strength Indicator) is measured and latched after the message sync bytes are received.
/// The latched RSSI is available from the lastRssi() member functionafter the complete message is received.
/// Although lastRssi()
/// supposedly returns a signed integer, in the case of this radio it actually returns an unsigned 8 bit integer (uint8_t)
/// and you will have to cast the return value to use it:
/// \code
/// uint8_t lastRssi = (uint8_t)rf24.lastRssi();
/// \endcode
/// The units of RSSI are arbitrary and relative, with larger unsigned numbers indicating a stronger signal. Values up to 255
/// are seen with radios in close proximity to each other. Lower limit of receivable strength is about 70.
///
/// \par Transmitter Power
///
/// You can control the transmitter power on the RF24/25/26/27 transceiver
/// with the RH_RF24::setTxPower() function. The argument can be any of
/// 0x00 to 0x4f (for RFM24/Si4460) or
/// 0x00 to 0x7f (for others)
/// 0x00 will yield no measurable power. For other settings there is a non-linear correlation with actual
/// RF power output (see below)
/// The default is 0x10. Eg:
/// \code
/// driver.setTxPower(0x10);
/// \endcode
///
/// We have made some actual power measurements against
/// programmed power
/// - Anarduino Mini with RFM24-433 and RFM26-433 at Vcc = 3.3V, in CW mode, 434MHz
/// - 10cm RG58C/U soldered direct to RFM69 module ANT and GND
/// - bnc connecteor
/// - 12dB attenuator
/// - BNC-SMA adapter
/// - MiniKits AD8307 HF/VHF Power Head (calibrated against Rohde&Schwartz 806.2020 test set)
/// - Digitech QM-1460 digital multimeter
/// \code
/// Program power Measured Power dBm
/// HEX RFM24 RFM26
/// 0x00 not measurable not measurable
/// 0x01 -20.4 -20.6
/// 0x0f 2.4 4.8
/// 0x1f 9.4 11.0
/// 0x2f 11.2 14.2
/// 0x3f 11.6 16.4
/// 0x4f 11.6 18.0
/// 0x5f 18.6
/// 0x6f 19.0
/// 0x7f 19.2
/// \endcode
/// Caution: the actual radiated power output will depend heavily on the power supply voltage and the antenna.
class RH_RF24 : public RHSPIDriver
{
public:
/// \brief Defines property values for a set of modem configuration registers
///
/// Defines property values for a set of modem configuration registers
/// that can be passed to setModemRegisters() if none of the choices in
/// ModemConfigChoice suit your need setModemRegisters() writes the
/// property values from this structure to the appropriate RF24 properties
/// to set the desired modulation type, data rate and deviation/bandwidth.
/// OBSOLETE: no need ever to use this now
typedef struct
{
uint8_t prop_2000; ///< Value for property RH_RF24_PROPERTY_MODEM_MOD_TYPE
uint8_t prop_2003; ///< Value for property RH_RF24_PROPERTY_MODEM_DATA_RATE_2
uint8_t prop_2004; ///< Value for property RH_RF24_PROPERTY_MODEM_DATA_RATE_1
uint8_t prop_2005; ///< Value for property RH_RF24_PROPERTY_MODEM_DATA_RATE_0
uint8_t prop_2006; ///< Value for property RH_RF24_PROPERTY_MODEM_TX_NCO_MODE_3
uint8_t prop_2007; ///< Value for property RH_RF24_PROPERTY_MODEM_TX_NCO_MODE_2
uint8_t prop_2008; ///< Value for property RH_RF24_PROPERTY_MODEM_TX_NCO_MODE_1
uint8_t prop_2009; ///< Value for property RH_RF24_PROPERTY_MODEM_TX_NCO_MODE_0
uint8_t prop_200a; ///< Value for property RH_RF24_PROPERTY_MODEM_FREQ_DEV_2
uint8_t prop_200b; ///< Value for property RH_RF24_PROPERTY_MODEM_FREQ_DEV_1
uint8_t prop_200c; ///< Value for property RH_RF24_PROPERTY_MODEM_FREQ_DEV_0
uint8_t prop_2018; ///< Value for property RH_RF24_PROPERTY_MODEM_TX_RAMP_DELAY
uint8_t prop_201e; ///< Value for property RH_RF24_PROPERTY_MODEM_DECIMATION_CFG1
uint8_t prop_201f; ///< Value for property RH_RF24_PROPERTY_MODEM_DECIMATION_CFG0
uint8_t prop_2022; ///< Value for property RH_RF24_PROPERTY_MODEM_BCR_OSR_1
uint8_t prop_2023; ///< Value for property RH_RF24_PROPERTY_MODEM_BCR_OSR_0
uint8_t prop_2024; ///< Value for property RH_RF24_PROPERTY_MODEM_BCR_NCO_OFFSET_2
uint8_t prop_2025; ///< Value for property RH_RF24_PROPERTY_MODEM_BCR_NCO_OFFSET_1
uint8_t prop_2026; ///< Value for property RH_RF24_PROPERTY_MODEM_BCR_NCO_OFFSET_0
uint8_t prop_2027; ///< Value for property RH_RF24_PROPERTY_MODEM_BCR_GAIN_1
uint8_t prop_2028; ///< Value for property RH_RF24_PROPERTY_MODEM_BCR_GAIN_0
uint8_t prop_2029; ///< Value for property RH_RF24_PROPERTY_MODEM_BCR_GEAR
uint8_t prop_202d; ///< Value for property RH_RF24_PROPERTY_MODEM_AFC_WAIT
uint8_t prop_202e; ///< Value for property RH_RF24_PROPERTY_MODEM_AFC_GAIN_1
uint8_t prop_202f; ///< Value for property RH_RF24_PROPERTY_MODEM_AFC_GAIN_0
uint8_t prop_2030; ///< Value for property RH_RF24_PROPERTY_MODEM_AFC_LIMITER_1
uint8_t prop_2031; ///< Value for property RH_RF24_PROPERTY_MODEM_AFC_LIMITER_0
uint8_t prop_2035; ///< Value for property RH_RF24_PROPERTY_MODEM_AGC_CONTROL
uint8_t prop_2038; ///< Value for property RH_RF24_PROPERTY_MODEM_AGC_WINDOW_SIZE
uint8_t prop_2039; ///< Value for property RH_RF24_PROPERTY_MODEM_AGC_RFPD_DECAY
uint8_t prop_203a; ///< Value for property RH_RF24_PROPERTY_MODEM_AGC_IFPD_DECAY
uint8_t prop_203b; ///< Value for property RH_RF24_PROPERTY_MODEM_FSK4_GAIN1
uint8_t prop_203c; ///< Value for property RH_RF24_PROPERTY_MODEM_FSK4_GAIN0
uint8_t prop_203d; ///< Value for property RH_RF24_PROPERTY_MODEM_FSK4_TH1
uint8_t prop_203e; ///< Value for property RH_RF24_PROPERTY_MODEM_FSK4_TH0
uint8_t prop_203f; ///< Value for property RH_RF24_PROPERTY_MODEM_FSK4_MAP
uint8_t prop_2040; ///< Value for property RH_RF24_PROPERTY_MODEM_OOK_PDTC
uint8_t prop_2043; ///< Value for property RH_RF24_PROPERTY_MODEM_OOK_MISC
uint8_t prop_2045; ///< Value for property RH_RF24_PROPERTY_MODEM_RAW_CONTROL
uint8_t prop_2046; ///< Value for property RH_RF24_PROPERTY_MODEM_RAW_EYE_1
uint8_t prop_2047; ///< Value for property RH_RF24_PROPERTY_MODEM_RAW_EYE_0
uint8_t prop_204e; ///< Value for property RH_RF24_PROPERTY_MODEM_RSSI_COMP
uint8_t prop_2100; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE13_7_0
uint8_t prop_2101; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE12_7_0
uint8_t prop_2102; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE11_7_0
uint8_t prop_2103; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE10_7_0
uint8_t prop_2104; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE9_7_0
uint8_t prop_2105; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE8_7_0
uint8_t prop_2106; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE7_7_0
uint8_t prop_2107; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE6_7_0
uint8_t prop_2108; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE5_7_0
uint8_t prop_2109; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE4_7_0
uint8_t prop_210a; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE3_7_0
uint8_t prop_210b; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE2_7_0
uint8_t prop_210c; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE1_7_0
uint8_t prop_210d; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COE0_7_0
uint8_t prop_210e; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COEM0
uint8_t prop_210f; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COEM1
uint8_t prop_2110; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COEM2
uint8_t prop_2111; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX1_CHFLT_COEM3
uint8_t prop_2112; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE13_7_0
uint8_t prop_2113; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE12_7_0
uint8_t prop_2114; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE11_7_0
uint8_t prop_2115; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE10_7_0
uint8_t prop_2116; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE9_7_0
uint8_t prop_2117; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE8_7_0
uint8_t prop_2118; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE7_7_0
uint8_t prop_2119; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE6_7_0
uint8_t prop_211a; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE5_7_0
uint8_t prop_211b; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE4_7_0
uint8_t prop_211c; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE3_7_0
uint8_t prop_211d; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE2_7_0
uint8_t prop_211e; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE1_7_0
uint8_t prop_211f; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COE0_7_0
uint8_t prop_2120; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COEM0
uint8_t prop_2121; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COEM1
uint8_t prop_2122; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COEM2
uint8_t prop_2123; ///< Value for property RH_RF24_PROPERTY_MODEM_CHFLT_RX2_CHFLT_COEM3
uint8_t prop_2203; ///< Value for property RH_RF24_PROPERTY_PA_TC
uint8_t prop_2300; ///< Value for property RH_RF24_PROPERTY_SYNTH_PFDCP_CPFF
uint8_t prop_2301; ///< Value for property RH_RF24_PROPERTY_SYNTH_PFDCP_CPINT
uint8_t prop_2303; ///< Value for property RH_RF24_PROPERTY_SYNTH_LPFILT3
uint8_t prop_2304; ///< Value for property RH_RF24_PROPERTY_SYNTH_LPFILT2
uint8_t prop_2305; ///< Value for property RH_RF24_PROPERTY_SYNTH_LPFILT1
} ModemConfig;
/// Choices for setModemConfig() for a selected subset of common
/// modulation types, and data rates. If you need another configuration,
/// use the register calculator. and call setModemRegisters() with your
/// desired settings.
/// These are indexes into MODEM_CONFIG_TABLE. We strongly recommend you use these symbolic
/// definitions and not their integer equivalents: its possible that values will be
/// changed in later versions (though we will try to avoid it).
/// Contributions of new complete and tested ModemConfigs ready to add to this list will be readily accepted.
/// OBSOLETE: no need ever to use this now
typedef enum
{
FSK_Rb0_5Fd1 = 0, ///< FSK Rb = 0.5kbs, Fd = 1kHz
FSK_Rb5Fd10, ///< FSK Rb = 5kbs, Fd = 10kHz
FSK_Rb50Fd100, ///< FSK Rb = 50kbs, Fd = 100kHz
FSK_Rb150Fd300, ///< FSK Rb = 50kbs, Fd = 100kHz
GFSK_Rb0_5Fd1, ///< GFSK Rb = 0.5kbs, Fd = 1kHz
GFSK_Rb5Fd10, ///< GFSK Rb = 5kbs, Fd = 10kHz
GFSK_Rb50Fd100, ///< GFSK Rb = 50kbs, Fd = 100kHz
GFSK_Rb150Fd300, ///< GFSK Rb = 150kbs, Fd = 300kHz
// We were unable to get any other OOKs to work
OOK_Rb5Bw30, ///< OOK Rb = 5kbs, Bw = 30kHz
OOK_Rb10Bw40, ///< OOK Rb = 10kbs, Bw = 40kHz
// We were unable to get any 4FSK or 4GFSK schemes to work
} ModemConfigChoice;
/// \brief Defines the available choices for CRC
/// Types of permitted CRC polynomials, to be passed to setCRCPolynomial()
/// They deliberately have the same numeric values as the CRC_POLYNOMIAL field of PKT_CRC_CONFIG
typedef enum
{
CRC_NONE = 0,
CRC_ITU_T,
CRC_IEC_16,
CRC_Biacheva,
CRC_16_IBM,
CRC_CCITT,
CRC_Koopman,
CRC_IEEE_802_3,
CRC_Castagnoli,
} CRCPolynomial;
/// \brief Defines the commands we can interrogate in printRegisters
typedef struct
{
uint8_t cmd; ///< The command number
uint8_t replyLen; ///< Number of bytes in the reply stream (after the CTS)
} CommandInfo;
/// Constructor. You can have multiple instances, but each instance must have its own
/// interrupt and slave select pin. After constructing, you must call init() to initialise the interface
/// and the radio module. A maximum of 3 instances can co-exist on one processor, provided there are sufficient
/// distinct interrupt lines, one for each instance.
/// \param[in] slaveSelectPin the Arduino pin number of the output to use to select the RF24 before
/// accessing it. Defaults to the normal SS pin for your Arduino (D10 for Diecimila, Uno etc, D53 for Mega, D10 for Maple)
/// \param[in] interruptPin The interrupt Pin number that is connected to the RF24 DIO0 interrupt line.
/// Defaults to pin 2.
/// Caution: You must specify an interrupt capable pin.
/// On many Arduino boards, there are limitations as to which pins may be used as interrupts.
/// On Leonardo pins 0, 1, 2 or 3. On Mega2560 pins 2, 3, 18, 19, 20, 21. On Due and Teensy, any digital pin.
/// On other Arduinos pins 2 or 3.
/// See http://arduino.cc/en/Reference/attachInterrupt for more details.
/// On Chipkit Uno32, pins 38, 2, 7, 8, 35.
/// On other boards, any digital pin may be used.
/// \param [in] sdnPin The pin number connected to SDN on the radio. Defaults to pin 9.
/// Connecting SDN directly to ground does not aloways provide reliable radio startup.
/// \param[in] spi Pointer to the SPI interface object to use.
/// Defaults to the standard Arduino hardware SPI interface
RH_RF24(uint8_t slaveSelectPin = SS, uint8_t interruptPin = 2, uint8_t sdnPin = 9, RHGenericSPI& spi = hardware_spi);
/// Initialises this instance and the radio module connected to it.
/// The following steps are taken:
/// - Initialise the slave select and shutdown pins and the SPI interface library
/// - Checks the connected RF24 module can be communicated
/// - Attaches an interrupt handler
/// - Configures the RF24 module
/// - Sets the frequency to 434.0 MHz
/// - Sets the modem data rate to GFSK_Rb5Fd10
/// - Sets the tranmitter power level to 16 (about 2.4dBm on RFM4)
/// \return true if everything was successful
bool init();
/// Sets the chip mode that will be used when the RH_RF24 driver is idle (ie not transmitting or receiving)
/// You can use this to control the power level consumed while idle, at the cost of slower
/// transition to tranmit or receive states
/// \param[in] idleMode The chip state to use when idle. Sensible choices might be RH_RF24_DEVICE_STATE_SLEEP or RH_RF24_DEVICE_STATE_READY
void setIdleMode(uint8_t idleMode);
/// Sets the transmitter and receiver
/// centre frequency.
/// Valid frequency ranges for RFM24/Si4460, Si4461, RFM25/Si4463 are:
/// 142MHz to 175Mhz, 284MHz to 350MHz, 425MHz to 525MHz, 850MHz to 1050MHz.
/// Valid frequency ranges for RFM26/Si4464 are:
/// 119MHz to 960MHz.
/// Caution: RFM modules are designed with antenna coupling components to suit a limited band
/// of frequencies (marked underneath the module). It is possible to set frequencies in other bands,
/// but you may only get little or no power radiated.
/// Caution, you can only use this function to change frequency within the frequency band configured by
/// the radio configuration header file. To use a frequency in a different band, you must recompile with
/// the appropriate radio configuration header file. Setting a frequency in anotehr band will
/// have unpredicatble results.
/// \param[in] centre Frequency in MHz.
/// \param[in] afcPullInRange Not used
/// \return true if the selected frequency is within a valid range for the connected radio and if
/// setting the new frequency succeeded.
bool setFrequency(float centre, float afcPullInRange = 0.05);
/// OBSOLETE, do not use.
/// To get different modulation schemes, you must generate a new radio config file
/// as described in this documentation.
/// Sets all the properties required to configure the data modem in the RF24, including the data rate,
/// bandwidths etc. You can use this to configure the modem with custom configurations if none of the
/// canned configurations in ModemConfigChoice suit you.
/// \param[in] config A ModemConfig structure containing values for the modem configuration registers.
void setModemRegisters(const ModemConfig* config);
/// OBSOLETE, do not use.
/// To get different modulation schemes, you must generate a new radio config file
/// as described in this documentation.
/// Select one of the predefined modem configurations. If you need a modem configuration not provided
/// here, use setModemRegisters() with your own ModemConfig. The default after init() is RH_RF24::GFSK_Rb5Fd10.
/// \param[in] index The configuration choice.
/// \return true if index is a valid choice.
bool setModemConfig(ModemConfigChoice index);
/// Starts the receiver and checks whether a received message is available.
/// This can be called multiple times in a timeout loop
/// \return true if a complete, valid message has been received and is able to be retrieved by
/// recv()
bool available();
/// Turns the receiver on if it not already on.
/// If there is a valid message available, copy it to buf and return true
/// else return false.
/// If a message is copied, *len is set to the length (Caution, 0 length messages are permitted).
/// You should be sure to call this function frequently enough to not miss any messages
/// It is recommended that you call it in your main loop.
/// \param[in] buf Location to copy the received message
/// \param[in,out] len Pointer to available space in buf. Set to the actual number of octets copied.
/// \return true if a valid message was copied to buf
bool recv(uint8_t* buf, uint8_t* len);
/// Waits until any previous transmit packet is finished being transmitted with waitPacketSent().
/// Then loads a message into the transmitter and starts the transmitter. Note that a message length
/// of 0 is NOT permitted.
/// \param[in] data Array of data to be sent
/// \param[in] len Number of bytes of data to send (> 0)
/// \return true if the message length was valid and it was correctly queued for transmit
bool send(const uint8_t* data, uint8_t len);
/// The maximum message length supported by this driver
/// \return The maximum message length supported by this driver
uint8_t maxMessageLength();
/// Sets the length of the preamble
/// in bytes.
/// Caution: this should be set to the same
/// value on all nodes in your network. Default is 4.
/// \param[in] bytes Preamble length in bytes.
void setPreambleLength(uint16_t bytes);
/// Sets the sync words for transmit and receive
/// Caution: SyncWords should be set to the same
/// value on all nodes in your network. Nodes with different SyncWords set will never receive
/// each others messages, so different SyncWords can be used to isolate different
/// networks from each other. Default is { 0x2d, 0xd4 }.
/// \param[in] syncWords Array of sync words, 1 to 4 octets long. NULL if no sync words to be used.
/// \param[in] len Number of sync words to set, 1 to 4. 0 if no sync words to be used.
void setSyncWords(const uint8_t* syncWords = NULL, uint8_t len = 0);
/// Sets the CRC polynomial to be used to generate the CRC for both receive and transmit
/// otherwise the default of CRC_16_IBM will be used.
/// \param[in] polynomial One of RH_RF24::CRCPolynomial choices CRC_*
/// \return true if polynomial is a valid option for this radio.
bool setCRCPolynomial(CRCPolynomial polynomial);
/// If current mode is Rx or Tx changes it to Idle. If the transmitter or receiver is running,
/// disables them.
void setModeIdle();
/// If current mode is Tx or Idle, changes it to Rx.
/// Starts the receiver in the RF24.
void setModeRx();
/// If current mode is Rx or Idle, changes it to Rx. F
/// Starts the transmitter in the RF24.
void setModeTx();
/// Sets the transmitter power output level register PA_PWR_LVL
/// The power argument to this function has a non-linear correlation with the actual RF power output.
/// See the transmitter power table above for some examples.
/// Also the Si446x Data Sheet section 5.4.2 may be helpful.
/// Be a good neighbour and set the lowest power level you need.
/// Caution: legal power limits may apply in certain countries.
/// After init(), the power will be set to 0x10.
/// \param[in] power Transmitter power level. For RFM24/Si4460, valid values are 0x00 to 0x4f. For others, 0x00 to 0x7f
void setTxPower(uint8_t power);
/// Dump the values of available command replies and properties
/// to the Serial device if RH_HAVE_SERIAL is defined for the current platform
/// Not all commands have valid replies, therefore they are not all printed.
/// Caution: the list is very long
bool printRegisters();
/// Send a string of command bytes to the chip and get a string of reply bytes
/// Different RFM24 commands take different numbers of command bytes and send back different numbers
/// of reply bytes. See the Si446x documentaiton for more details.
/// Both command bytes and reply bytes are optional
/// \param[in] cmd The command number. One of RH_RF24_CMD_*
/// \param[in] write_buf Pointer to write_len bytes of command input bytes to send. If there are none, set to NULL.
/// \param[in] write_len The number of bytes to send from write_buf. If there are none, set to 0
/// \param[out] read_buf Pointer to read_len bytes of storage where the reply stream from the comand will be written.
/// If none are required, set to NULL
/// \param[in] read_len The number of bytes to read from the reply stream. If none required, set to 0.