1 | $regfile = "m8def.dat" ' ATMEGA8
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2 | $crystal = 8000000 ' 8 MHz
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3 | $baud = 31250 ' MIDI-Baudrate (31,25kBit)
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4 |
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5 |
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6 | Config Adc = Single , Prescaler = Auto , Reference = Avcc
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7 | Start Adc
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8 |
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9 |
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10 | Taster Alias Pind
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11 | Taster1 Alias Pinb
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12 |
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13 |
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14 | Ddrd = &B00000010 ' Output auf TXD (PD1) pin3
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15 |
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16 | Portd = &B11111101 ' Pull-Up für Taster
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17 | Portb = &B11111111
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18 |
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19 |
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20 |
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21 | Dim Note As Byte
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22 | Dim Velocity As Byte
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23 | Dim Befehl As Byte
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24 | Dim Wert As Word
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25 | Dim Noteon As Byte
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26 | Dim Noteoff As Byte
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27 | Dim Controlchange As Byte
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28 | Dim Keydown(8)as Byte ' Tasten-Merker
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29 | Dim Keydown1(8)as Byte
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30 | Dim Fader(8) As Byte
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31 | Dim Count As Byte ' ADC Werte (Fader)
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32 |
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33 |
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34 | Noteon = &H90 'channel 1
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35 | Noteoff = &H80
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36 | Controlchange = &HB0 'CC1
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37 |
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38 |
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39 | Declare Sub Sendmidi(byval Befehl As Byte , Wert As Word)
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40 |
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41 |
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42 |
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43 |
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44 | Do
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45 | For Count = 0 To 7 Step 1
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46 |
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47 |
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48 | 'Tasterreihe Port D
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49 |
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50 | If Taster.count = 0 Then
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51 | If Keydown(count + 1) = 1 Then
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52 |
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53 | Befehl = Noteon
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54 | Velocity = &H7E '0-7F
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55 | Wert = Count + 1 'Note 1-8
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56 | Shift Wert , Left , 8 'Schieben (Byte zu Word)
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57 | Wert = Wert + Velocity
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58 |
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59 | If Count = 1 Then 'PD1 überspringen (UART)
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60 | Else
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61 | Call Sendmidi(befehl , Wert)
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62 | End If
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63 |
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64 | Keydown(count + 1) = 0 'Tasten merker
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65 |
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66 | End If
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67 | Else
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68 | If Keydown(count + 1) = 0 Then
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69 |
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70 | Befehl = Noteoff
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71 | Velocity = &H00 '0-7F
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72 | Wert = Count + 1 'Note 1-8
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73 | Shift Wert , Left , 8 'Schieben (Byte zu Word)
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74 | Wert = Wert + Velocity
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75 |
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76 | If Count = 1 Then 'PD1 überspringen (UART)
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77 | Else
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78 | Call Sendmidi(befehl , Wert)
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79 | End If
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80 |
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81 | Keydown(count + 1) = 1 'Tasten merker
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82 |
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83 | End If
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84 | End If
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85 |
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86 |
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87 | 'Tasterreihe Port B
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88 |
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89 | If Taster1.count = 0 Then
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90 | If Keydown1(count + 1) = 1 Then
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91 | Befehl = Noteon
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92 | Velocity = &H7E
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93 | Wert = Count + 9 'Note 9-16
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94 | Shift Wert , Left , 8
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95 | Wert = Wert + Velocity
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96 | Call Sendmidi(befehl , Wert)
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97 | Keydown1(count + 1) = 0
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98 | End If
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99 | Else
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100 | If Keydown1(count + 1) = 0 Then
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101 | Befehl = Noteoff
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102 | Velocity = &H00
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103 | Wert = Count + 9
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104 | Shift Wert , Left , 8
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105 | Wert = Wert + Velocity
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106 | Call Sendmidi(befehl , Wert)
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107 | Keydown1(count + 1) = 1
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108 | End If
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109 | End If
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110 |
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111 |
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112 | 'Fader Port C
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113 |
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114 | If Fader(count + 1) <> Getadc(count) Then
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115 | Befehl = Controlchange
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116 | Velocity = Getadc(count)
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117 | Shift Velocity , Right , 3
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118 | Wert = Count + 8
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119 | Shift Wert , Left , 8
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120 | Wert = Wert + Velocity
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121 | Call Sendmidi(befehl , Wert)
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122 | End If
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123 |
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124 | Fader(count + 1) = Getadc(count)
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125 |
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126 | Next Count
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127 |
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128 |
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129 | Loop
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130 | End
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131 |
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132 | Sub Sendmidi(byval Befehl As Byte , Wert As Word)
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133 |
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134 | Print Hex(befehl);
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135 | Print Hex(wert);
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136 |
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137 |
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138 | Waitms 20
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139 |
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140 | End Sub
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