text: // **********************************************************************************
  // Registers used in driver definition for HopeRF RFM69W/RFM69HW, Semtech SX1231/1231H
  // **********************************************************************************
  // Copyright Felix Rusu (2015), felix@lowpowerlab.com
  // http://lowpowerlab.com/
  // **********************************************************************************
  // License
  // **********************************************************************************
  // This program is free software; you can redistribute it
  // and/or modify it under the terms of the GNU General
  // Public License as published by the Free Software
  // Foundation; either version 2 of the License, or
  // (at your option) any later version.
  //
  // This program is distributed in the hope that it will
  // be useful, but WITHOUT ANY WARRANTY; without even the
  // implied warranty of MERCHANTABILITY or FITNESS FOR A
  // PARTICULAR PURPOSE.  See the GNU General Public
  // License for more details.
  //
  // You should have received a copy of the GNU General
  // Public License along with this program; if not, write
  // to the Free Software Foundation, Inc.,
  // 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  //
  // Licence can be viewed at
  // http://www.fsf.org/licenses/gpl.txt
  //
  // Please maintain this license information along with authorship
  // and copyright notices in any redistribution of this code
  // **********************************************************************************
  // RFM69/SX1231 Internal registers addresses
  //**************************************************
  #define REG_FIFO          0x00
  #define REG_OPMODE        0x01
  #define REG_DATAMODUL     0x02
  #define REG_BITRATEMSB    0x03
  #define REG_BITRATELSB    0x04
  #define REG_FDEVMSB       0x05
  #define REG_FDEVLSB       0x06
  #define REG_FRFMSB        0x07
  #define REG_FRFMID        0x08
  #define REG_FRFLSB        0x09
  #define REG_OSC1          0x0A
  #define REG_AFCCTRL       0x0B
  #define REG_LOWBAT        0x0C
  #define REG_LISTEN1       0x0D
  #define REG_LISTEN2       0x0E
  #define REG_LISTEN3       0x0F
  #define REG_VERSION       0x10
  #define REG_PALEVEL       0x11
  #define REG_PARAMP        0x12
  #define REG_OCP           0x13
  #define REG_AGCREF        0x14  // not present on RFM69/SX1231
  #define REG_AGCTHRESH1    0x15  // not present on RFM69/SX1231
  #define REG_AGCTHRESH2    0x16  // not present on RFM69/SX1231
  #define REG_AGCTHRESH3    0x17  // not present on RFM69/SX1231
  #define REG_LNA           0x18
  #define REG_RXBW          0x19
  #define REG_AFCBW         0x1A
  #define REG_OOKPEAK       0x1B
  #define REG_OOKAVG        0x1C
  #define REG_OOKFIX        0x1D
  #define REG_AFCFEI        0x1E
  #define REG_AFCMSB        0x1F
  #define REG_AFCLSB        0x20
  #define REG_FEIMSB        0x21
  #define REG_FEILSB        0x22
  #define REG_RSSICONFIG    0x23
  #define REG_RSSIVALUE     0x24
  #define REG_DIOMAPPING1   0x25
  #define REG_DIOMAPPING2   0x26
  #define REG_IRQFLAGS1     0x27
  #define REG_IRQFLAGS2     0x28
  #define REG_RSSITHRESH    0x29
  #define REG_RXTIMEOUT1    0x2A
  #define REG_RXTIMEOUT2    0x2B
  #define REG_PREAMBLEMSB   0x2C
  #define REG_PREAMBLELSB   0x2D
  #define REG_SYNCCONFIG    0x2E
  #define REG_SYNCVALUE1    0x2F
  #define REG_SYNCVALUE2    0x30
  #define REG_SYNCVALUE3    0x31
  #define REG_SYNCVALUE4    0x32
  #define REG_SYNCVALUE5    0x33
  #define REG_SYNCVALUE6    0x34
  #define REG_SYNCVALUE7    0x35
  #define REG_SYNCVALUE8    0x36
  #define REG_PACKETCONFIG1 0x37
  #define REG_PAYLOADLENGTH 0x38
  #define REG_NODEADRS      0x39
  #define REG_BROADCASTADRS 0x3A
  #define REG_AUTOMODES     0x3B
  #define REG_FIFOTHRESH    0x3C
  #define REG_PACKETCONFIG2 0x3D
  #define REG_AESKEY1       0x3E
  #define REG_AESKEY2       0x3F
  #define REG_AESKEY3       0x40
  #define REG_AESKEY4       0x41
  #define REG_AESKEY5       0x42
  #define REG_AESKEY6       0x43
  #define REG_AESKEY7       0x44
  #define REG_AESKEY8       0x45
  #define REG_AESKEY9       0x46
  #define REG_AESKEY10      0x47
  #define REG_AESKEY11      0x48
  #define REG_AESKEY12      0x49
  #define REG_AESKEY13      0x4A
  #define REG_AESKEY14      0x4B
  #define REG_AESKEY15      0x4C
  #define REG_AESKEY16      0x4D
  #define REG_TEMP1         0x4E
  #define REG_TEMP2         0x4F
  #define REG_TESTLNA       0x58
  #define REG_TESTPA1       0x5A  // only present on RFM69HW/SX1231H
  #define REG_TESTPA2       0x5C  // only present on RFM69HW/SX1231H
  #define REG_TESTDAGC      0x6F
  
  //******************************************************
  // RF69/SX1231 bit control definition
  //******************************************************
  
  // RegOpMode
  #define RF_OPMODE_SEQUENCER_OFF       0x80
  #define RF_OPMODE_SEQUENCER_ON        0x00  // Default
  
  #define RF_OPMODE_LISTEN_ON           0x40
  #define RF_OPMODE_LISTEN_OFF          0x00  // Default
  
  #define RF_OPMODE_LISTENABORT         0x20
  
  #define RF_OPMODE_SLEEP               0x00
  #define RF_OPMODE_STANDBY             0x04  // Default
  #define RF_OPMODE_SYNTHESIZER         0x08
  #define RF_OPMODE_TRANSMITTER         0x0C
  #define RF_OPMODE_RECEIVER            0x10
  
  
  // RegDataModul
  #define RF_DATAMODUL_DATAMODE_PACKET            0x00  // Default
  #define RF_DATAMODUL_DATAMODE_CONTINUOUS        0x40
  #define RF_DATAMODUL_DATAMODE_CONTINUOUSNOBSYNC 0x60
  
  #define RF_DATAMODUL_MODULATIONTYPE_FSK         0x00  // Default
  #define RF_DATAMODUL_MODULATIONTYPE_OOK         0x08
  
  #define RF_DATAMODUL_MODULATIONSHAPING_00       0x00  // Default
  #define RF_DATAMODUL_MODULATIONSHAPING_01       0x01
  #define RF_DATAMODUL_MODULATIONSHAPING_10       0x02
  #define RF_DATAMODUL_MODULATIONSHAPING_11       0x03
  
  
  // RegBitRate (bits/sec) example bit rates
  #define RF_BITRATEMSB_1200            0x68
  #define RF_BITRATELSB_1200            0x2B
  #define RF_BITRATEMSB_2400            0x34
  #define RF_BITRATELSB_2400            0x15
  #define RF_BITRATEMSB_4800            0x1A  // Default
  #define RF_BITRATELSB_4800            0x0B  // Default
  #define RF_BITRATEMSB_9600            0x0D
  #define RF_BITRATELSB_9600            0x05
  #define RF_BITRATEMSB_19200           0x06
  #define RF_BITRATELSB_19200           0x83
  #define RF_BITRATEMSB_38400           0x03
  #define RF_BITRATELSB_38400           0x41
  
  #define RF_BITRATEMSB_38323           0x03
  #define RF_BITRATELSB_38323           0x43
  
  #define RF_BITRATEMSB_34482           0x03
  #define RF_BITRATELSB_34482           0xA0
  
  #define RF_BITRATEMSB_76800           0x01
  #define RF_BITRATELSB_76800           0xA1
  #define RF_BITRATEMSB_153600          0x00
  #define RF_BITRATELSB_153600          0xD0
  #define RF_BITRATEMSB_57600           0x02
  #define RF_BITRATELSB_57600           0x2C
  #define RF_BITRATEMSB_115200          0x01
  #define RF_BITRATELSB_115200          0x16
  #define RF_BITRATEMSB_12500           0x0A
  #define RF_BITRATELSB_12500           0x00
  #define RF_BITRATEMSB_25000           0x05
  #define RF_BITRATELSB_25000           0x00
  #define RF_BITRATEMSB_50000           0x02
  #define RF_BITRATELSB_50000           0x80
  #define RF_BITRATEMSB_100000          0x01
  #define RF_BITRATELSB_100000          0x40
  #define RF_BITRATEMSB_150000          0x00
  #define RF_BITRATELSB_150000          0xD5
  #define RF_BITRATEMSB_200000          0x00
  #define RF_BITRATELSB_200000          0xA0
  #define RF_BITRATEMSB_250000          0x00
  #define RF_BITRATELSB_250000          0x80
  #define RF_BITRATEMSB_300000          0x00
  #define RF_BITRATELSB_300000          0x6B
  #define RF_BITRATEMSB_32768           0x03
  #define RF_BITRATELSB_32768           0xD1
  // custom bit rates
  #define RF_BITRATEMSB_55555           0x02
  #define RF_BITRATELSB_55555           0x40
  #define RF_BITRATEMSB_200KBPS         0x00
  #define RF_BITRATELSB_200KBPS         0xa0
  
  
  // RegFdev - frequency deviation (Hz)
  #define RF_FDEVMSB_2000             0x00
  #define RF_FDEVLSB_2000             0x21
  #define RF_FDEVMSB_5000             0x00  // Default
  #define RF_FDEVLSB_5000             0x52  // Default
  #define RF_FDEVMSB_7500             0x00
  #define RF_FDEVLSB_7500             0x7B
  #define RF_FDEVMSB_10000            0x00
  #define RF_FDEVLSB_10000            0xA4
  #define RF_FDEVMSB_15000            0x00
  #define RF_FDEVLSB_15000            0xF6
  #define RF_FDEVMSB_20000            0x01
  #define RF_FDEVLSB_20000            0x48
  #define RF_FDEVMSB_25000            0x01
  #define RF_FDEVLSB_25000            0x9A
  #define RF_FDEVMSB_30000            0x01
  #define RF_FDEVLSB_30000            0xEC
  #define RF_FDEVMSB_35000            0x02
  #define RF_FDEVLSB_35000            0x3D
  #define RF_FDEVMSB_40000            0x02
  #define RF_FDEVLSB_40000            0x8F
  #define RF_FDEVMSB_45000            0x02
  #define RF_FDEVLSB_45000            0xE1
  #define RF_FDEVMSB_50000            0x03
  #define RF_FDEVLSB_50000            0x33
  #define RF_FDEVMSB_55000            0x03
  #define RF_FDEVLSB_55000            0x85
  #define RF_FDEVMSB_60000            0x03
  #define RF_FDEVLSB_60000            0xD7
  #define RF_FDEVMSB_65000            0x04
  #define RF_FDEVLSB_65000            0x29
  #define RF_FDEVMSB_70000            0x04
  #define RF_FDEVLSB_70000            0x7B
  #define RF_FDEVMSB_75000            0x04
  #define RF_FDEVLSB_75000            0xCD
  #define RF_FDEVMSB_80000            0x05
  #define RF_FDEVLSB_80000            0x1F
  #define RF_FDEVMSB_85000            0x05
  #define RF_FDEVLSB_85000            0x71
  #define RF_FDEVMSB_90000            0x05
  #define RF_FDEVLSB_90000            0xC3
  #define RF_FDEVMSB_95000            0x06
  #define RF_FDEVLSB_95000            0x14
  #define RF_FDEVMSB_100000           0x06
  #define RF_FDEVLSB_100000           0x66
  #define RF_FDEVMSB_110000           0x07
  #define RF_FDEVLSB_110000           0x0A
  #define RF_FDEVMSB_120000           0x07
  #define RF_FDEVLSB_120000           0xAE
  #define RF_FDEVMSB_130000           0x08
  #define RF_FDEVLSB_130000           0x52
  #define RF_FDEVMSB_140000           0x08
  #define RF_FDEVLSB_140000           0xF6
  #define RF_FDEVMSB_150000           0x09
  #define RF_FDEVLSB_150000           0x9A
  #define RF_FDEVMSB_160000           0x0A
  #define RF_FDEVLSB_160000           0x3D
  #define RF_FDEVMSB_170000           0x0A
  #define RF_FDEVLSB_170000           0xE1
  #define RF_FDEVMSB_180000           0x0B
  #define RF_FDEVLSB_180000           0x85
  #define RF_FDEVMSB_190000           0x0C
  #define RF_FDEVLSB_190000           0x29
  #define RF_FDEVMSB_200000           0x0C
  #define RF_FDEVLSB_200000           0xCD
  #define RF_FDEVMSB_210000           0x0D
  #define RF_FDEVLSB_210000           0x71
  #define RF_FDEVMSB_220000           0x0E
  #define RF_FDEVLSB_220000           0x14
  #define RF_FDEVMSB_230000           0x0E
  #define RF_FDEVLSB_230000           0xB8
  #define RF_FDEVMSB_240000           0x0F
  #define RF_FDEVLSB_240000           0x5C
  #define RF_FDEVMSB_250000           0x10
  #define RF_FDEVLSB_250000           0x00
  #define RF_FDEVMSB_260000           0x10
  #define RF_FDEVLSB_260000           0xA4
  #define RF_FDEVMSB_270000           0x11
  #define RF_FDEVLSB_270000           0x48
  #define RF_FDEVMSB_280000           0x11
  #define RF_FDEVLSB_280000           0xEC
  #define RF_FDEVMSB_290000           0x12
  #define RF_FDEVLSB_290000           0x8F
  #define RF_FDEVMSB_300000           0x13
  #define RF_FDEVLSB_300000           0x33
  
  
  // RegFrf (MHz) - carrier frequency
  // 315Mhz band
  #define RF_FRFMSB_314             0x4E
  #define RF_FRFMID_314             0x80
  #define RF_FRFLSB_314             0x00
  #define RF_FRFMSB_315             0x4E
  #define RF_FRFMID_315             0xC0
  #define RF_FRFLSB_315             0x00
  #define RF_FRFMSB_316             0x4F
  #define RF_FRFMID_316             0x00
  #define RF_FRFLSB_316             0x00
  // 433mhz band
  #define RF_FRFMSB_433             0x6C
  #define RF_FRFMID_433             0x40
  #define RF_FRFLSB_433             0x00
  #define RF_FRFMSB_434             0x6C
  #define RF_FRFMID_434             0x80
  #define RF_FRFLSB_434             0x00
  #define RF_FRFMSB_435             0x6C
  #define RF_FRFMID_435             0xC0
  #define RF_FRFLSB_435             0x00
  // 868Mhz band
  #define RF_FRFMSB_863             0xD7
  #define RF_FRFMID_863             0xC0
  #define RF_FRFLSB_863             0x00
  #define RF_FRFMSB_864             0xD8
  #define RF_FRFMID_864             0x00
  #define RF_FRFLSB_864             0x00
  #define RF_FRFMSB_865             0xD8
  #define RF_FRFMID_865             0x40
  #define RF_FRFLSB_865             0x00
  #define RF_FRFMSB_866             0xD8
  #define RF_FRFMID_866             0x80
  #define RF_FRFLSB_866             0x00
  #define RF_FRFMSB_867             0xD8
  #define RF_FRFMID_867             0xC0
  #define RF_FRFLSB_867             0x00
  #define RF_FRFMSB_868             0xD9
  #define RF_FRFMID_868             0x00
  #define RF_FRFLSB_868             0x00
  #define RF_FRFMSB_869             0xD9
  #define RF_FRFMID_869             0x40
  #define RF_FRFLSB_869             0x00
  #define RF_FRFMSB_870             0xD9
  #define RF_FRFMID_870             0x80
  #define RF_FRFLSB_870             0x00
  // 915Mhz band
  #define RF_FRFMSB_902             0xE1
  #define RF_FRFMID_902             0x80
  #define RF_FRFLSB_902             0x00
  #define RF_FRFMSB_903             0xE1
  #define RF_FRFMID_903             0xC0
  #define RF_FRFLSB_903             0x00
  #define RF_FRFMSB_904             0xE2
  #define RF_FRFMID_904             0x00
  #define RF_FRFLSB_904             0x00
  #define RF_FRFMSB_905             0xE2
  #define RF_FRFMID_905             0x40
  #define RF_FRFLSB_905             0x00
  #define RF_FRFMSB_906             0xE2
  #define RF_FRFMID_906             0x80
  #define RF_FRFLSB_906             0x00
  #define RF_FRFMSB_907             0xE2
  #define RF_FRFMID_907             0xC0
  #define RF_FRFLSB_907             0x00
  #define RF_FRFMSB_908             0xE3
  #define RF_FRFMID_908             0x00
  #define RF_FRFLSB_908             0x00
  #define RF_FRFMSB_909             0xE3
  #define RF_FRFMID_909             0x40
  #define RF_FRFLSB_909             0x00
  #define RF_FRFMSB_910             0xE3
  #define RF_FRFMID_910             0x80
  #define RF_FRFLSB_910             0x00
  #define RF_FRFMSB_911             0xE3
  #define RF_FRFMID_911             0xC0
  #define RF_FRFLSB_911             0x00
  #define RF_FRFMSB_912             0xE4
  #define RF_FRFMID_912             0x00
  #define RF_FRFLSB_912             0x00
  #define RF_FRFMSB_913             0xE4
  #define RF_FRFMID_913             0x40
  #define RF_FRFLSB_913             0x00
  #define RF_FRFMSB_914             0xE4
  #define RF_FRFMID_914             0x80
  #define RF_FRFLSB_914             0x00
  #define RF_FRFMSB_915             0xE4  // Default
  #define RF_FRFMID_915             0xC0  // Default
  #define RF_FRFLSB_915             0x00  // Default
  #define RF_FRFMSB_916             0xE5
  #define RF_FRFMID_916             0x00
  #define RF_FRFLSB_916             0x00
  #define RF_FRFMSB_917             0xE5
  #define RF_FRFMID_917             0x40
  #define RF_FRFLSB_917             0x00
  #define RF_FRFMSB_918             0xE5
  #define RF_FRFMID_918             0x80
  #define RF_FRFLSB_918             0x00
  #define RF_FRFMSB_919             0xE5
  #define RF_FRFMID_919             0xC0
  #define RF_FRFLSB_919             0x00
  #define RF_FRFMSB_920             0xE6
  #define RF_FRFMID_920             0x00
  #define RF_FRFLSB_920             0x00
  #define RF_FRFMSB_921             0xE6
  #define RF_FRFMID_921             0x40
  #define RF_FRFLSB_921             0x00
  #define RF_FRFMSB_922             0xE6
  #define RF_FRFMID_922             0x80
  #define RF_FRFLSB_922             0x00
  #define RF_FRFMSB_923             0xE6
  #define RF_FRFMID_923             0xC0
  #define RF_FRFLSB_923             0x00
  #define RF_FRFMSB_924             0xE7
  #define RF_FRFMID_924             0x00
  #define RF_FRFLSB_924             0x00
  #define RF_FRFMSB_925             0xE7
  #define RF_FRFMID_925             0x40
  #define RF_FRFLSB_925             0x00
  #define RF_FRFMSB_926             0xE7
  #define RF_FRFMID_926             0x80
  #define RF_FRFLSB_926             0x00
  #define RF_FRFMSB_927             0xE7
  #define RF_FRFMID_927             0xC0
  #define RF_FRFLSB_927             0x00
  #define RF_FRFMSB_928             0xE8
  #define RF_FRFMID_928             0x00
  #define RF_FRFLSB_928             0x00
  
  
  // RegOsc1
  #define RF_OSC1_RCCAL_START       0x80
  #define RF_OSC1_RCCAL_DONE        0x40
  
  
  // RegAfcCtrl
  #define RF_AFCCTRL_LOWBETA_OFF    0x00  // Default
  #define RF_AFCCTRL_LOWBETA_ON     0x20
  
  
  // RegLowBat
  #define RF_LOWBAT_MONITOR         0x10
  #define RF_LOWBAT_ON              0x08
  #define RF_LOWBAT_OFF             0x00  // Default
  
  #define RF_LOWBAT_TRIM_1695       0x00
  #define RF_LOWBAT_TRIM_1764       0x01
  #define RF_LOWBAT_TRIM_1835       0x02  // Default
  #define RF_LOWBAT_TRIM_1905       0x03
  #define RF_LOWBAT_TRIM_1976       0x04
  #define RF_LOWBAT_TRIM_2045       0x05
  #define RF_LOWBAT_TRIM_2116       0x06
  #define RF_LOWBAT_TRIM_2185       0x07
  
  
  // RegListen1
  #define RF_LISTEN1_RESOL_64       0x50
  #define RF_LISTEN1_RESOL_4100     0xA0  // Default
  #define RF_LISTEN1_RESOL_262000   0xF0
  
  #define RF_LISTEN1_RESOL_IDLE_64     0x40
  #define RF_LISTEN1_RESOL_IDLE_4100   0x80  // Default
  #define RF_LISTEN1_RESOL_IDLE_262000 0xC0
  
  #define RF_LISTEN1_RESOL_RX_64       0x10
  #define RF_LISTEN1_RESOL_RX_4100     0x20  // Default
  #define RF_LISTEN1_RESOL_RX_262000   0x30
  
  #define RF_LISTEN1_CRITERIA_RSSI          0x00  // Default
  #define RF_LISTEN1_CRITERIA_RSSIANDSYNC   0x08
  
  #define RF_LISTEN1_END_00                 0x00
  #define RF_LISTEN1_END_01                 0x02  // Default
  #define RF_LISTEN1_END_10                 0x04
  
  
  // RegListen2
  #define RF_LISTEN2_COEFIDLE_VALUE         0xF5 // Default
  
  
  // RegListen3
  #define RF_LISTEN3_COEFRX_VALUE           0x20 // Default
  
  
  // RegVersion
  #define RF_VERSION_VER        0x24  // Default
  
  
  // RegPaLevel
  #define RF_PALEVEL_PA0_ON     0x80  // Default
  #define RF_PALEVEL_PA0_OFF    0x00
  #define RF_PALEVEL_PA1_ON     0x40
  #define RF_PALEVEL_PA1_OFF    0x00  // Default
  #define RF_PALEVEL_PA2_ON     0x20
  #define RF_PALEVEL_PA2_OFF    0x00  // Default
  
  #define RF_PALEVEL_OUTPUTPOWER_00000      0x00
  #define RF_PALEVEL_OUTPUTPOWER_00001      0x01
  #define RF_PALEVEL_OUTPUTPOWER_00010      0x02
  #define RF_PALEVEL_OUTPUTPOWER_00011      0x03
  #define RF_PALEVEL_OUTPUTPOWER_00100      0x04
  #define RF_PALEVEL_OUTPUTPOWER_00101      0x05
  #define RF_PALEVEL_OUTPUTPOWER_00110      0x06
  #define RF_PALEVEL_OUTPUTPOWER_00111      0x07
  #define RF_PALEVEL_OUTPUTPOWER_01000      0x08
  #define RF_PALEVEL_OUTPUTPOWER_01001      0x09
  #define RF_PALEVEL_OUTPUTPOWER_01010      0x0A
  #define RF_PALEVEL_OUTPUTPOWER_01011      0x0B
  #define RF_PALEVEL_OUTPUTPOWER_01100      0x0C
  #define RF_PALEVEL_OUTPUTPOWER_01101      0x0D
  #define RF_PALEVEL_OUTPUTPOWER_01110      0x0E
  #define RF_PALEVEL_OUTPUTPOWER_01111      0x0F
  #define RF_PALEVEL_OUTPUTPOWER_10000      0x10
  #define RF_PALEVEL_OUTPUTPOWER_10001      0x11
  #define RF_PALEVEL_OUTPUTPOWER_10010      0x12
  #define RF_PALEVEL_OUTPUTPOWER_10011      0x13
  #define RF_PALEVEL_OUTPUTPOWER_10100      0x14
  #define RF_PALEVEL_OUTPUTPOWER_10101      0x15
  #define RF_PALEVEL_OUTPUTPOWER_10110      0x16
  #define RF_PALEVEL_OUTPUTPOWER_10111      0x17
  #define RF_PALEVEL_OUTPUTPOWER_11000      0x18
  #define RF_PALEVEL_OUTPUTPOWER_11001      0x19
  #define RF_PALEVEL_OUTPUTPOWER_11010      0x1A
  #define RF_PALEVEL_OUTPUTPOWER_11011      0x1B
  #define RF_PALEVEL_OUTPUTPOWER_11100      0x1C
  #define RF_PALEVEL_OUTPUTPOWER_11101      0x1D
  #define RF_PALEVEL_OUTPUTPOWER_11110      0x1E
  #define RF_PALEVEL_OUTPUTPOWER_11111      0x1F  // Default
  
  
  // RegPaRamp
  #define RF_PARAMP_3400            0x00
  #define RF_PARAMP_2000            0x01
  #define RF_PARAMP_1000            0x02
  #define RF_PARAMP_500             0x03
  #define RF_PARAMP_250             0x04
  #define RF_PARAMP_125             0x05
  #define RF_PARAMP_100             0x06
  #define RF_PARAMP_62              0x07
  #define RF_PARAMP_50              0x08
  #define RF_PARAMP_40              0x09  // Default
  #define RF_PARAMP_31              0x0A
  #define RF_PARAMP_25              0x0B
  #define RF_PARAMP_20              0x0C
  #define RF_PARAMP_15              0x0D
  #define RF_PARAMP_12              0x0E
  #define RF_PARAMP_10              0x0F
  
  
  // RegOcp
  #define RF_OCP_OFF                0x0F
  #define RF_OCP_ON                 0x1A  // Default
  
  #define RF_OCP_TRIM_45            0x00
  #define RF_OCP_TRIM_50            0x01
  #define RF_OCP_TRIM_55            0x02
  #define RF_OCP_TRIM_60            0x03
  #define RF_OCP_TRIM_65            0x04
  #define RF_OCP_TRIM_70            0x05
  #define RF_OCP_TRIM_75            0x06
  #define RF_OCP_TRIM_80            0x07
  #define RF_OCP_TRIM_85            0x08
  #define RF_OCP_TRIM_90            0x09
  #define RF_OCP_TRIM_95            0x0A  // Default
  #define RF_OCP_TRIM_100           0x0B
  #define RF_OCP_TRIM_105           0x0C
  #define RF_OCP_TRIM_110           0x0D
  #define RF_OCP_TRIM_115           0x0E
  #define RF_OCP_TRIM_120           0x0F
  
  
  // RegAgcRef - not present on RFM69/SX1231
  #define RF_AGCREF_AUTO_ON         0x40  // Default
  #define RF_AGCREF_AUTO_OFF        0x00
  
  #define RF_AGCREF_LEVEL_MINUS80   0x00  // Default
  #define RF_AGCREF_LEVEL_MINUS81   0x01
  #define RF_AGCREF_LEVEL_MINUS82   0x02
  #define RF_AGCREF_LEVEL_MINUS83   0x03
  #define RF_AGCREF_LEVEL_MINUS84   0x04
  #define RF_AGCREF_LEVEL_MINUS85   0x05
  #define RF_AGCREF_LEVEL_MINUS86   0x06
  #define RF_AGCREF_LEVEL_MINUS87   0x07
  #define RF_AGCREF_LEVEL_MINUS88   0x08
  #define RF_AGCREF_LEVEL_MINUS89   0x09
  #define RF_AGCREF_LEVEL_MINUS90   0x0A
  #define RF_AGCREF_LEVEL_MINUS91   0x0B
  #define RF_AGCREF_LEVEL_MINUS92   0x0C
  #define RF_AGCREF_LEVEL_MINUS93   0x0D
  #define RF_AGCREF_LEVEL_MINUS94   0x0E
  #define RF_AGCREF_LEVEL_MINUS95   0x0F
  #define RF_AGCREF_LEVEL_MINUS96   0x10
  #define RF_AGCREF_LEVEL_MINUS97   0x11
  #define RF_AGCREF_LEVEL_MINUS98   0x12
  #define RF_AGCREF_LEVEL_MINUS99   0x13
  #define RF_AGCREF_LEVEL_MINUS100  0x14
  #define RF_AGCREF_LEVEL_MINUS101  0x15
  #define RF_AGCREF_LEVEL_MINUS102  0x16
  #define RF_AGCREF_LEVEL_MINUS103  0x17
  #define RF_AGCREF_LEVEL_MINUS104  0x18
  #define RF_AGCREF_LEVEL_MINUS105  0x19
  #define RF_AGCREF_LEVEL_MINUS106  0x1A
  #define RF_AGCREF_LEVEL_MINUS107  0x1B
  #define RF_AGCREF_LEVEL_MINUS108  0x1C
  #define RF_AGCREF_LEVEL_MINUS109  0x1D
  #define RF_AGCREF_LEVEL_MINUS110  0x1E
  #define RF_AGCREF_LEVEL_MINUS111  0x1F
  #define RF_AGCREF_LEVEL_MINUS112  0x20
  #define RF_AGCREF_LEVEL_MINUS113  0x21
  #define RF_AGCREF_LEVEL_MINUS114  0x22
  #define RF_AGCREF_LEVEL_MINUS115  0x23
  #define RF_AGCREF_LEVEL_MINUS116  0x24
  #define RF_AGCREF_LEVEL_MINUS117  0x25
  #define RF_AGCREF_LEVEL_MINUS118  0x26
  #define RF_AGCREF_LEVEL_MINUS119  0x27
  #define RF_AGCREF_LEVEL_MINUS120  0x28
  #define RF_AGCREF_LEVEL_MINUS121  0x29
  #define RF_AGCREF_LEVEL_MINUS122  0x2A
  #define RF_AGCREF_LEVEL_MINUS123  0x2B
  #define RF_AGCREF_LEVEL_MINUS124  0x2C
  #define RF_AGCREF_LEVEL_MINUS125  0x2D
  #define RF_AGCREF_LEVEL_MINUS126  0x2E
  #define RF_AGCREF_LEVEL_MINUS127  0x2F
  #define RF_AGCREF_LEVEL_MINUS128  0x30
  #define RF_AGCREF_LEVEL_MINUS129  0x31
  #define RF_AGCREF_LEVEL_MINUS130  0x32
  #define RF_AGCREF_LEVEL_MINUS131  0x33
  #define RF_AGCREF_LEVEL_MINUS132  0x34
  #define RF_AGCREF_LEVEL_MINUS133  0x35
  #define RF_AGCREF_LEVEL_MINUS134  0x36
  #define RF_AGCREF_LEVEL_MINUS135  0x37
  #define RF_AGCREF_LEVEL_MINUS136  0x38
  #define RF_AGCREF_LEVEL_MINUS137  0x39
  #define RF_AGCREF_LEVEL_MINUS138  0x3A
  #define RF_AGCREF_LEVEL_MINUS139  0x3B
  #define RF_AGCREF_LEVEL_MINUS140  0x3C
  #define RF_AGCREF_LEVEL_MINUS141  0x3D
  #define RF_AGCREF_LEVEL_MINUS142  0x3E
  #define RF_AGCREF_LEVEL_MINUS143  0x3F
  
  
  // RegAgcThresh1 - not present on RFM69/SX1231
  #define RF_AGCTHRESH1_SNRMARGIN_000   0x00
  #define RF_AGCTHRESH1_SNRMARGIN_001   0x20
  #define RF_AGCTHRESH1_SNRMARGIN_010   0x40
  #define RF_AGCTHRESH1_SNRMARGIN_011   0x60
  #define RF_AGCTHRESH1_SNRMARGIN_100   0x80
  #define RF_AGCTHRESH1_SNRMARGIN_101   0xA0  // Default
  #define RF_AGCTHRESH1_SNRMARGIN_110   0xC0
  #define RF_AGCTHRESH1_SNRMARGIN_111   0xE0
  
  #define RF_AGCTHRESH1_STEP1_0         0x00
  #define RF_AGCTHRESH1_STEP1_1         0x01
  #define RF_AGCTHRESH1_STEP1_2         0x02
  #define RF_AGCTHRESH1_STEP1_3         0x03
  #define RF_AGCTHRESH1_STEP1_4         0x04
  #define RF_AGCTHRESH1_STEP1_5         0x05
  #define RF_AGCTHRESH1_STEP1_6         0x06
  #define RF_AGCTHRESH1_STEP1_7         0x07
  #define RF_AGCTHRESH1_STEP1_8         0x08
  #define RF_AGCTHRESH1_STEP1_9         0x09
  #define RF_AGCTHRESH1_STEP1_10        0x0A
  #define RF_AGCTHRESH1_STEP1_11        0x0B
  #define RF_AGCTHRESH1_STEP1_12        0x0C
  #define RF_AGCTHRESH1_STEP1_13        0x0D
  #define RF_AGCTHRESH1_STEP1_14        0x0E
  #define RF_AGCTHRESH1_STEP1_15        0x0F
  #define RF_AGCTHRESH1_STEP1_16        0x10  // Default
  #define RF_AGCTHRESH1_STEP1_17        0x11
  #define RF_AGCTHRESH1_STEP1_18        0x12
  #define RF_AGCTHRESH1_STEP1_19        0x13
  #define RF_AGCTHRESH1_STEP1_20        0x14
  #define RF_AGCTHRESH1_STEP1_21        0x15
  #define RF_AGCTHRESH1_STEP1_22        0x16
  #define RF_AGCTHRESH1_STEP1_23        0x17
  #define RF_AGCTHRESH1_STEP1_24        0x18
  #define RF_AGCTHRESH1_STEP1_25        0x19
  #define RF_AGCTHRESH1_STEP1_26        0x1A
  #define RF_AGCTHRESH1_STEP1_27        0x1B
  #define RF_AGCTHRESH1_STEP1_28        0x1C
  #define RF_AGCTHRESH1_STEP1_29        0x1D
  #define RF_AGCTHRESH1_STEP1_30        0x1E
  #define RF_AGCTHRESH1_STEP1_31        0x1F
  
  
  // RegAgcThresh2 - not present on RFM69/SX1231
  #define RF_AGCTHRESH2_STEP2_0         0x00
  #define RF_AGCTHRESH2_STEP2_1         0x10
  #define RF_AGCTHRESH2_STEP2_2         0x20
  #define RF_AGCTHRESH2_STEP2_3         0x30  // XXX wrong -- Default
  #define RF_AGCTHRESH2_STEP2_4         0x40
  #define RF_AGCTHRESH2_STEP2_5         0x50
  #define RF_AGCTHRESH2_STEP2_6         0x60
  #define RF_AGCTHRESH2_STEP2_7         0x70  // default
  #define RF_AGCTHRESH2_STEP2_8         0x80
  #define RF_AGCTHRESH2_STEP2_9         0x90
  #define RF_AGCTHRESH2_STEP2_10        0xA0
  #define RF_AGCTHRESH2_STEP2_11        0xB0
  #define RF_AGCTHRESH2_STEP2_12        0xC0
  #define RF_AGCTHRESH2_STEP2_13        0xD0
  #define RF_AGCTHRESH2_STEP2_14        0xE0
  #define RF_AGCTHRESH2_STEP2_15        0xF0
  
  #define RF_AGCTHRESH2_STEP3_0         0x00
  #define RF_AGCTHRESH2_STEP3_1         0x01
  #define RF_AGCTHRESH2_STEP3_2         0x02
  #define RF_AGCTHRESH2_STEP3_3         0x03
  #define RF_AGCTHRESH2_STEP3_4         0x04
  #define RF_AGCTHRESH2_STEP3_5         0x05
  #define RF_AGCTHRESH2_STEP3_6         0x06
  #define RF_AGCTHRESH2_STEP3_7         0x07
  #define RF_AGCTHRESH2_STEP3_8         0x08
  #define RF_AGCTHRESH2_STEP3_9         0x09
  #define RF_AGCTHRESH2_STEP3_10        0x0A
  #define RF_AGCTHRESH2_STEP3_11        0x0B  // Default
  #define RF_AGCTHRESH2_STEP3_12        0x0C
  #define RF_AGCTHRESH2_STEP3_13        0x0D
  #define RF_AGCTHRESH2_STEP3_14        0x0E
  #define RF_AGCTHRESH2_STEP3_15        0x0F
  
  
  // RegAgcThresh3 - not present on RFM69/SX1231
  #define RF_AGCTHRESH3_STEP4_0         0x00
  #define RF_AGCTHRESH3_STEP4_1         0x10
  #define RF_AGCTHRESH3_STEP4_2         0x20
  #define RF_AGCTHRESH3_STEP4_3         0x30
  #define RF_AGCTHRESH3_STEP4_4         0x40
  #define RF_AGCTHRESH3_STEP4_5         0x50
  #define RF_AGCTHRESH3_STEP4_6         0x60
  #define RF_AGCTHRESH3_STEP4_7         0x70
  #define RF_AGCTHRESH3_STEP4_8         0x80
  #define RF_AGCTHRESH3_STEP4_9         0x90  // Default
  #define RF_AGCTHRESH3_STEP4_10        0xA0
  #define RF_AGCTHRESH3_STEP4_11        0xB0
  #define RF_AGCTHRESH3_STEP4_12        0xC0
  #define RF_AGCTHRESH3_STEP4_13        0xD0
  #define RF_AGCTHRESH3_STEP4_14        0xE0
  #define RF_AGCTHRESH3_STEP4_15        0xF0
  
  #define RF_AGCTHRESH3_STEP5_0         0x00
  #define RF_AGCTHRESH3_STEP5_1         0x01
  #define RF_AGCTHRESH3_STEP5_2         0x02
  #define RF_AGCTHRESH3_STEP5_3         0x03
  #define RF_AGCTHRESH3_STEP5_4         0x04
  #define RF_AGCTHRESH3_STEP5_5         0x05
  #define RF_AGCTHRESH3_STEP5_6         0x06
  #define RF_AGCTHRESH3_STEP5_7         0x07
  #define RF_AGCTHRES33_STEP5_8         0x08
  #define RF_AGCTHRESH3_STEP5_9         0x09
  #define RF_AGCTHRESH3_STEP5_10        0x0A
  #define RF_AGCTHRESH3_STEP5_11        0x0B  // Default
  #define RF_AGCTHRESH3_STEP5_12        0x0C
  #define RF_AGCTHRESH3_STEP5_13        0x0D
  #define RF_AGCTHRESH3_STEP5_14        0x0E
  #define RF_AGCTHRESH3_STEP5_15        0x0F
  
  
  // RegLna
  #define RF_LNA_ZIN_50                 0x00  // Reset value
  #define RF_LNA_ZIN_200                0x80  // Recommended default
  
  #define RF_LNA_LOWPOWER_OFF           0x00  // Default
  #define RF_LNA_LOWPOWER_ON            0x40
  
  #define RF_LNA_CURRENTGAIN            0x08
  
  #define RF_LNA_GAINSELECT_AUTO        0x00  // Default
  #define RF_LNA_GAINSELECT_MAX         0x01
  #define RF_LNA_GAINSELECT_MAXMINUS6   0x02
  #define RF_LNA_GAINSELECT_MAXMINUS12  0x03
  #define RF_LNA_GAINSELECT_MAXMINUS24  0x04
  #define RF_LNA_GAINSELECT_MAXMINUS36  0x05
  #define RF_LNA_GAINSELECT_MAXMINUS48  0x06
  
  
  // RegRxBw
  #define RF_RXBW_DCCFREQ_000           0x00
  #define RF_RXBW_DCCFREQ_001           0x20
  #define RF_RXBW_DCCFREQ_010           0x40  // Recommended default
  #define RF_RXBW_DCCFREQ_011           0x60
  #define RF_RXBW_DCCFREQ_100           0x80  // Reset value
  #define RF_RXBW_DCCFREQ_101           0xA0
  #define RF_RXBW_DCCFREQ_110           0xC0
  #define RF_RXBW_DCCFREQ_111           0xE0
  
  #define RF_RXBW_MANT_16               0x00  // Reset value
  #define RF_RXBW_MANT_20               0x08
  #define RF_RXBW_MANT_24               0x10  // Recommended default
  
  #define RF_RXBW_EXP_0                 0x00
  #define RF_RXBW_EXP_1                 0x01
  #define RF_RXBW_EXP_2                 0x02
  #define RF_RXBW_EXP_3                 0x03
  #define RF_RXBW_EXP_4                 0x04
  #define RF_RXBW_EXP_5                 0x05  // Recommended default
  #define RF_RXBW_EXP_6                 0x06  // Reset value
  #define RF_RXBW_EXP_7                 0x07
  
  
  // RegAfcBw
  #define RF_AFCBW_DCCFREQAFC_000       0x00
  #define RF_AFCBW_DCCFREQAFC_001       0x20
  #define RF_AFCBW_DCCFREQAFC_010       0x40
  #define RF_AFCBW_DCCFREQAFC_011       0x60
  #define RF_AFCBW_DCCFREQAFC_100       0x80  // Default
  #define RF_AFCBW_DCCFREQAFC_101       0xA0
  #define RF_AFCBW_DCCFREQAFC_110       0xC0
  #define RF_AFCBW_DCCFREQAFC_111       0xE0
  
  #define RF_AFCBW_MANTAFC_16           0x00
  #define RF_AFCBW_MANTAFC_20           0x08  // Default
  #define RF_AFCBW_MANTAFC_24           0x10
  
  #define RF_AFCBW_EXPAFC_0             0x00
  #define RF_AFCBW_EXPAFC_1             0x01
  #define RF_AFCBW_EXPAFC_2             0x02  // Reset value
  #define RF_AFCBW_EXPAFC_3             0x03  // Recommended default
  #define RF_AFCBW_EXPAFC_4             0x04
  #define RF_AFCBW_EXPAFC_5             0x05
  #define RF_AFCBW_EXPAFC_6             0x06
  #define RF_AFCBW_EXPAFC_7             0x07
  
  
  // RegOokPeak
  #define RF_OOKPEAK_THRESHTYPE_FIXED       0x00
  #define RF_OOKPEAK_THRESHTYPE_PEAK        0x40  // Default
  #define RF_OOKPEAK_THRESHTYPE_AVERAGE     0x80
  
  #define RF_OOKPEAK_PEAKTHRESHSTEP_000     0x00  // Default
  #define RF_OOKPEAK_PEAKTHRESHSTEP_001     0x08
  #define RF_OOKPEAK_PEAKTHRESHSTEP_010     0x10
  #define RF_OOKPEAK_PEAKTHRESHSTEP_011     0x18
  #define RF_OOKPEAK_PEAKTHRESHSTEP_100     0x20
  #define RF_OOKPEAK_PEAKTHRESHSTEP_101     0x28
  #define RF_OOKPEAK_PEAKTHRESHSTEP_110     0x30
  #define RF_OOKPEAK_PEAKTHRESHSTEP_111     0x38
  
  #define RF_OOKPEAK_PEAKTHRESHDEC_000      0x00  // Default
  #define RF_OOKPEAK_PEAKTHRESHDEC_001      0x01
  #define RF_OOKPEAK_PEAKTHRESHDEC_010      0x02
  #define RF_OOKPEAK_PEAKTHRESHDEC_011      0x03
  #define RF_OOKPEAK_PEAKTHRESHDEC_100      0x04
  #define RF_OOKPEAK_PEAKTHRESHDEC_101      0x05
  #define RF_OOKPEAK_PEAKTHRESHDEC_110      0x06
  #define RF_OOKPEAK_PEAKTHRESHDEC_111      0x07
  
  
  // RegOokAvg
  #define RF_OOKAVG_AVERAGETHRESHFILT_00    0x00
  #define RF_OOKAVG_AVERAGETHRESHFILT_01    0x40
  #define RF_OOKAVG_AVERAGETHRESHFILT_10    0x80  // Default
  #define RF_OOKAVG_AVERAGETHRESHFILT_11    0xC0
  
  
  // RegOokFix
  #define RF_OOKFIX_FIXEDTHRESH_VALUE       0x06  // Default
  
  
  // RegAfcFei
  #define RF_AFCFEI_FEI_DONE                0x40
  #define RF_AFCFEI_FEI_START               0x20
  #define RF_AFCFEI_AFC_DONE                0x10
  #define RF_AFCFEI_AFCAUTOCLEAR_ON         0x08
  #define RF_AFCFEI_AFCAUTOCLEAR_OFF        0x00  // Default
  
  #define RF_AFCFEI_AFCAUTO_ON              0x04
  #define RF_AFCFEI_AFCAUTO_OFF             0x00  // Default
  
  #define RF_AFCFEI_AFC_CLEAR               0x02
  #define RF_AFCFEI_AFC_START               0x01
  
  
  // RegRssiConfig
  #define RF_RSSI_FASTRX_ON                 0x08  // not present on RFM69/SX1231
  #define RF_RSSI_FASTRX_OFF                0x00  // Default
  
  #define RF_RSSI_DONE                      0x02
  #define RF_RSSI_START                     0x01
  
  
  // RegDioMapping1
  #define RF_DIOMAPPING1_DIO0_00            0x00  // Default
  #define RF_DIOMAPPING1_DIO0_01            0x40
  #define RF_DIOMAPPING1_DIO0_10            0x80
  #define RF_DIOMAPPING1_DIO0_11            0xC0
  
  #define RF_DIOMAPPING1_DIO1_00            0x00  // Default
  #define RF_DIOMAPPING1_DIO1_01            0x10
  #define RF_DIOMAPPING1_DIO1_10            0x20
  #define RF_DIOMAPPING1_DIO1_11            0x30
  
  #define RF_DIOMAPPING1_DIO2_00            0x00  // Default
  #define RF_DIOMAPPING1_DIO2_01            0x04
  #define RF_DIOMAPPING1_DIO2_10            0x08
  #define RF_DIOMAPPING1_DIO2_11            0x0C
  
  #define RF_DIOMAPPING1_DIO3_00            0x00  // Default
  #define RF_DIOMAPPING1_DIO3_01            0x01
  #define RF_DIOMAPPING1_DIO3_10            0x02
  #define RF_DIOMAPPING1_DIO3_11            0x03
  
  
  // RegDioMapping2
  #define RF_DIOMAPPING2_DIO4_00            0x00  // Default
  #define RF_DIOMAPPING2_DIO4_01            0x40
  #define RF_DIOMAPPING2_DIO4_10            0x80
  #define RF_DIOMAPPING2_DIO4_11            0xC0
  
  #define RF_DIOMAPPING2_DIO5_00            0x00  // Default
  #define RF_DIOMAPPING2_DIO5_01            0x10
  #define RF_DIOMAPPING2_DIO5_10            0x20
  #define RF_DIOMAPPING2_DIO5_11            0x30
  
  #define RF_DIOMAPPING2_CLKOUT_32MHZ       0x00
  #define RF_DIOMAPPING2_CLKOUT_16MHZ       0x01
  #define RF_DIOMAPPING2_CLKOUT_8MHZ        0x02
  #define RF_DIOMAPPING2_CLKOUT_4MHZ        0x03
  #define RF_DIOMAPPING2_CLKOUT_2MHZ        0x04
  #define RF_DIOMAPPING2_CLKOUT_1MHZ        0x05  // Reset value
  #define RF_DIOMAPPING2_CLKOUT_RC          0x06
  #define RF_DIOMAPPING2_CLKOUT_OFF         0x07  // Recommended default
  
  
  // RegIrqFlags1
  #define RF_IRQFLAGS1_MODEREADY            0x80
  #define RF_IRQFLAGS1_RXREADY              0x40
  #define RF_IRQFLAGS1_TXREADY              0x20
  #define RF_IRQFLAGS1_PLLLOCK              0x10
  #define RF_IRQFLAGS1_RSSI                 0x08
  #define RF_IRQFLAGS1_TIMEOUT              0x04
  #define RF_IRQFLAGS1_AUTOMODE             0x02
  #define RF_IRQFLAGS1_SYNCADDRESSMATCH     0x01
  
  
  // RegIrqFlags2
  #define RF_IRQFLAGS2_FIFOFULL             0x80
  #define RF_IRQFLAGS2_FIFONOTEMPTY         0x40
  #define RF_IRQFLAGS2_FIFOLEVEL            0x20
  #define RF_IRQFLAGS2_FIFOOVERRUN          0x10
  #define RF_IRQFLAGS2_PACKETSENT           0x08
  #define RF_IRQFLAGS2_PAYLOADREADY         0x04
  #define RF_IRQFLAGS2_CRCOK                0x02
  #define RF_IRQFLAGS2_LOWBAT               0x01  // not present on RFM69/SX1231
  
  
  // RegRssiThresh
  #define RF_RSSITHRESH_VALUE               0xE4  // Default
  
  
  // RegRxTimeout1
  #define RF_RXTIMEOUT1_RXSTART_VALUE       0x00  // Default
  
  
  // RegRxTimeout2
  #define RF_RXTIMEOUT2_RSSITHRESH_VALUE    0x00  // Default
  
  
  // RegPreamble
  #define RF_PREAMBLESIZE_MSB_VALUE         0x00  // Default
  #define RF_PREAMBLESIZE_LSB_VALUE         0x03  // Default
  
  
  // RegSyncConfig
  #define RF_SYNC_ON                0x80  // Default
  #define RF_SYNC_OFF               0x00
  
  #define RF_SYNC_FIFOFILL_AUTO     0x00  // Default -- when sync interrupt occurs
  #define RF_SYNC_FIFOFILL_MANUAL   0x40
  
  #define RF_SYNC_SIZE_1            0x00
  #define RF_SYNC_SIZE_2            0x08
  #define RF_SYNC_SIZE_3            0x10
  #define RF_SYNC_SIZE_4            0x18  // Default
  #define RF_SYNC_SIZE_5            0x20
  #define RF_SYNC_SIZE_6            0x28
  #define RF_SYNC_SIZE_7            0x30
  #define RF_SYNC_SIZE_8            0x38
  
  #define RF_SYNC_TOL_0             0x00  // Default
  #define RF_SYNC_TOL_1             0x01
  #define RF_SYNC_TOL_2             0x02
  #define RF_SYNC_TOL_3             0x03
  #define RF_SYNC_TOL_4             0x04
  #define RF_SYNC_TOL_5             0x05
  #define RF_SYNC_TOL_6             0x06
  #define RF_SYNC_TOL_7             0x07
  
  
  // RegSyncValue1-8
  #define RF_SYNC_BYTE1_VALUE       0x00  // Default
  #define RF_SYNC_BYTE2_VALUE       0x00  // Default
  #define RF_SYNC_BYTE3_VALUE       0x00  // Default
  #define RF_SYNC_BYTE4_VALUE       0x00  // Default
  #define RF_SYNC_BYTE5_VALUE       0x00  // Default
  #define RF_SYNC_BYTE6_VALUE       0x00  // Default
  #define RF_SYNC_BYTE7_VALUE       0x00  // Default
  #define RF_SYNC_BYTE8_VALUE       0x00  // Default
  
  
  // RegPacketConfig1
  #define RF_PACKET1_FORMAT_FIXED       0x00  // Default
  #define RF_PACKET1_FORMAT_VARIABLE    0x80
  
  #define RF_PACKET1_DCFREE_OFF         0x00  // Default
  #define RF_PACKET1_DCFREE_MANCHESTER  0x20
  #define RF_PACKET1_DCFREE_WHITENING   0x40
  
  #define RF_PACKET1_CRC_ON             0x10  // Default
  #define RF_PACKET1_CRC_OFF            0x00
  
  #define RF_PACKET1_CRCAUTOCLEAR_ON    0x00  // Default
  #define RF_PACKET1_CRCAUTOCLEAR_OFF   0x08
  
  #define RF_PACKET1_ADRSFILTERING_OFF            0x00  // Default
  #define RF_PACKET1_ADRSFILTERING_NODE           0x02
  #define RF_PACKET1_ADRSFILTERING_NODEBROADCAST  0x04
  
  
  // RegPayloadLength
  #define RF_PAYLOADLENGTH_VALUE          0x40  // Default
  
  
  // RegBroadcastAdrs
  #define RF_BROADCASTADDRESS_VALUE       0x00
  
  
  // RegAutoModes
  #define RF_AUTOMODES_ENTER_OFF                0x00  // Default
  #define RF_AUTOMODES_ENTER_FIFONOTEMPTY       0x20
  #define RF_AUTOMODES_ENTER_FIFOLEVEL          0x40
  #define RF_AUTOMODES_ENTER_CRCOK              0x60
  #define RF_AUTOMODES_ENTER_PAYLOADREADY       0x80
  #define RF_AUTOMODES_ENTER_SYNCADRSMATCH      0xA0
  #define RF_AUTOMODES_ENTER_PACKETSENT         0xC0
  #define RF_AUTOMODES_ENTER_FIFOEMPTY          0xE0
  
  #define RF_AUTOMODES_EXIT_OFF                 0x00  // Default
  #define RF_AUTOMODES_EXIT_FIFOEMPTY           0x04
  #define RF_AUTOMODES_EXIT_FIFOLEVEL           0x08
  #define RF_AUTOMODES_EXIT_CRCOK               0x0C
  #define RF_AUTOMODES_EXIT_PAYLOADREADY        0x10
  #define RF_AUTOMODES_EXIT_SYNCADRSMATCH       0x14
  #define RF_AUTOMODES_EXIT_PACKETSENT          0x18
  #define RF_AUTOMODES_EXIT_RXTIMEOUT           0x1C
  
  #define RF_AUTOMODES_INTERMEDIATE_SLEEP       0x00  // Default
  #define RF_AUTOMODES_INTERMEDIATE_STANDBY     0x01
  #define RF_AUTOMODES_INTERMEDIATE_RECEIVER    0x02
  #define RF_AUTOMODES_INTERMEDIATE_TRANSMITTER 0x03
  
  
  // RegFifoThresh
  #define RF_FIFOTHRESH_TXSTART_FIFOTHRESH      0x00  // Reset value
  #define RF_FIFOTHRESH_TXSTART_FIFONOTEMPTY    0x80  // Recommended default
  
  #define RF_FIFOTHRESH_VALUE                   0x0F  // Default
  
  
  // RegPacketConfig2
  #define RF_PACKET2_RXRESTARTDELAY_1BIT        0x00  // Default
  #define RF_PACKET2_RXRESTARTDELAY_2BITS       0x10
  #define RF_PACKET2_RXRESTARTDELAY_4BITS       0x20
  #define RF_PACKET2_RXRESTARTDELAY_8BITS       0x30
  #define RF_PACKET2_RXRESTARTDELAY_16BITS      0x40
  #define RF_PACKET2_RXRESTARTDELAY_32BITS      0x50
  #define RF_PACKET2_RXRESTARTDELAY_64BITS      0x60
  #define RF_PACKET2_RXRESTARTDELAY_128BITS     0x70
  #define RF_PACKET2_RXRESTARTDELAY_256BITS     0x80
  #define RF_PACKET2_RXRESTARTDELAY_512BITS     0x90
  #define RF_PACKET2_RXRESTARTDELAY_1024BITS    0xA0
  #define RF_PACKET2_RXRESTARTDELAY_2048BITS    0xB0
  #define RF_PACKET2_RXRESTARTDELAY_NONE        0xC0
  #define RF_PACKET2_RXRESTART                  0x04
  
  #define RF_PACKET2_AUTORXRESTART_ON           0x02  // Default
  #define RF_PACKET2_AUTORXRESTART_OFF          0x00
  
  #define RF_PACKET2_AES_ON                     0x01
  #define RF_PACKET2_AES_OFF                    0x00  // Default
  
  
  // RegAesKey1-16
  #define RF_AESKEY1_VALUE            0x00  // Default
  #define RF_AESKEY2_VALUE            0x00  // Default
  #define RF_AESKEY3_VALUE            0x00  // Default
  #define RF_AESKEY4_VALUE            0x00  // Default
  #define RF_AESKEY5_VALUE            0x00  // Default
  #define RF_AESKEY6_VALUE            0x00  // Default
  #define RF_AESKEY7_VALUE            0x00  // Default
  #define RF_AESKEY8_VALUE            0x00  // Default
  #define RF_AESKEY9_VALUE            0x00  // Default
  #define RF_AESKEY10_VALUE           0x00  // Default
  #define RF_AESKEY11_VALUE           0x00  // Default
  #define RF_AESKEY12_VALUE           0x00  // Default
  #define RF_AESKEY13_VALUE           0x00  // Default
  #define RF_AESKEY14_VALUE           0x00  // Default
  #define RF_AESKEY15_VALUE           0x00  // Default
  #define RF_AESKEY16_VALUE           0x00  // Default
  
  
  // RegTemp1
  #define RF_TEMP1_MEAS_START         0x08
  #define RF_TEMP1_MEAS_RUNNING       0x04
  // not present on RFM69/SX1231
  #define RF_TEMP1_ADCLOWPOWER_ON     0x01  // Default
  #define RF_TEMP1_ADCLOWPOWER_OFF    0x00
  
  
  // RegTestLna
  #define RF_TESTLNA_NORMAL           0x1B
  #define RF_TESTLNA_HIGH_SENSITIVITY 0x2D
  
  
  // RegTestDagc
  #define RF_DAGC_NORMAL              0x00  // Reset value
  #define RF_DAGC_IMPROVED_LOWBETA1   0x20
  #define RF_DAGC_IMPROVED_LOWBETA0   0x30  // Recommended default
  