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1
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"""
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2
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3
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Description: Chirp Data Structure of the Memory Map for TYT TH-9000/VHF
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4
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Version: 0.1
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5
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Date: 8/25/2013
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6
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Status: Imcomplete
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7
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- This is the initial, incomplete version of the channel data structure.
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8
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- The memory map looks a lot like the Anytone 5888 model, however, these does appear to be significant differences.
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9
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ToDo:
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10
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- Decode channel DCS settings
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11
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- Decode General Options and Settings
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12
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- Decode Skip and Channel Set
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13
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14
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15
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Memory Map:
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16
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17
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Field Start End Size
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18
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hex) (hex) (dec)
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19
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Channel Set Flag 0100 011F 32
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20
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Channel Skip Flag 0120 013F 32
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21
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Blank/Unknown 0140 01EF 176
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22
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Global Options 01F0 191F 5036
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23
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Channel 000 2000 201F 32
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24
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Channel 001 2000 201F 32
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25
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...
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26
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Channel 100 2DC0 2DDF 32
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27
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...
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28
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Channel 199 38E0 38FF 32
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29
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Blank/Unknown 3900 3FFF 1792
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30
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Total 16128 (2^8 = 16384)
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31
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32
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33
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Protocol for Upload Sequence, Only Writes shown:
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34
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35
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1) Start
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36
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"Program" 50 52 4F 47 52 41 4D
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37
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0x02 02
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38
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"R\0x01\0x40\x10" 52 01 40 10 (?means "Read" address 1040, 16 bytes, but doesn't match write data field)
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39
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40
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2) Write Records, Loop from address 0100 to 3900, step 0x10
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41
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"W"<address><length><data><checksum>"\0x06" 57 .. .. 10 ..(*16) .. 06 (write record of 16 bytes)
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42
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header[4 bytes]:
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43
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command[1] = Write ("W")
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44
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address[2] = 0100 to 3900
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45
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length[1] = 0x10 (16 bytes length)
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46
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data[16 bytes]:
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47
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data[16] = 16 byte payload
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48
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end[2 bytes]:
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49
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checksum[1] = 1 byte, uses digit check checksum ( sum of header and data bytes, modulo 256)
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50
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end of record[1] = 0x06 (ascii ACK char)
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51
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52
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3) END
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53
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"END" 45 4E 44
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54
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55
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56
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57
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"""
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58
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59
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60
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"""
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61
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draft memory map , per channel record
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62
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- does not include DCS or various tone, cross settings
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63
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"""
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64
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65
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mem_format = """
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66
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struct memory {
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67
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bbcd freq[4];
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68
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bbcd offset[4];
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69
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u8 unknownA:4,
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70
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tune_step:4;
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71
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u8 unknownB:4,
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72
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channel_width:2,
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73
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reverse:1,
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74
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txoff:1;
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75
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u8 talkaround:1,
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76
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compander:1,
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77
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unknownC:2,
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78
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power:2,
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79
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duplex:2;
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80
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u8 unknownD:4,
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81
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rxtmode:2,
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82
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txtmode:2;
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83
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u8 unknown5:2,
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84
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txtone:6;
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85
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u8 unknown6:2,
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86
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rxtone:6;
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87
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u8 txcode;
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88
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u8 rxcode;
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89
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u8 unknownE[3];
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90
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char name[7];
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91
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u8 unknownF:6,
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92
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busychannellockout:2;
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93
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u8 unknownG[4];
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94
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u8 unknownH:7,
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95
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scrambler:1;
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96
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};
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97
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#seekto 0x2000;
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98
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struct memory memory[200];
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99
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"""
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100
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101
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102
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"""
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103
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description of channel record
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104
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bytes:bit type description
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105
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---------------------------------------------------------------------------
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106
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4 bbcd freq[4] receive frequency in packed binary coded decimal
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107
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4 bbcd offset[4] transmit offset in packed binary coded decimal (note: plus/minus direction set by 'duplex' field)
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108
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1 u8
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109
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:4 unknownA:4
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110
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:4 tune_step:4 tuning step, menu index value from 0-9
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111
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1 u8
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112
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:4 unknownB:4 not yet decoded, used for DCS coding?
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113
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:2 channel_width:2 channel spacing, menu index value from 0-3
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114
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:1 reverse:1 reverse flag, 0=off, 1=on (reverses tx and rx freqs)
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115
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:1 txoff:1 transmitt off flag, 0=transmit , 1=do not transmit
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116
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1 u8
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117
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:1 talkaround:1 talkaround flag, 0=off, 1=on (bypasses repeater)
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118
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:1 compander:1 compander flag, 0=off, 1=on (turns on/off voice compander option)
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119
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:2 unknownC:2
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120
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:2 power:2 tx power setting, value range 0-2, 0=hi,1=med,2=lo
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121
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:2 duplex:2 duplex settings, 0=simplex,1= minus(-) offset, 2= plus (+) offset (see offset field)
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122
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1 u8
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123
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:4 unknownD:4
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124
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:2 rxtmode:2 rx tone mode, value range 0-2, 0=none, 1=CTCSS, 2=DCS (ctcss tone in field rxtone)
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125
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:2 txtmode:2 tx tone mode, value range 0-2, 0=none, 1=CTCSS, 3=DCS (ctcss tone in field txtone)
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126
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1 u8
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127
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:2 unknownE:2
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128
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:6 txtone:6 tx ctcss tone, menu index
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129
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1 u8
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130
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:2 unknownF:2
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131
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:6 rxtone:6 rx ctcss tone, menu index
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132
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1 u8 txcode ?, not used for ctcss
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133
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1 u8 rxcode ?, not used for ctcss
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134
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3 u8 unknownG[3]
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135
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7 char name[7] 7 byte char string for channel name
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136
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1 u8
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137
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:6 unknownH:6,
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138
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:2 busychannellockout:2 busy channel lockout option , 0=off, 1=repeater, 2=busy (lock out tx if channel busy)
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139
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4 u8 unknownI[4];
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140
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1 u8
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141
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:7 unknownJ:7
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142
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:1 scrambler:1 scrambler flag, 0=off, 1=on (turns on tyt scrambler option)
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143
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"""
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