1 | .INCLUDE "m32def.inc" ; Deklarationen
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2 | // Takt= 4 MHz
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3 | .def akku = r16
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4 | .def temp1 = r21
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5 | .def temp2 = r22
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6 | .def temp3 = r23
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7 | .def temp = r24
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8 | .def wert_h = r25
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9 | .def wert_l = r26
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10 |
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11 | start:
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12 | ;STACK initialisieren
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13 | ldi temp1, LOW(RAMEND)
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14 | out SPL, temp1
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15 | ldi temp1, HIGH(RAMEND)
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16 | out SPH, temp1
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17 |
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18 | ; PORT C+ D alles AUSGÄNGE
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19 | ldi temp, 0b11111111
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20 | out DDRC, temp
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21 | out DDRD, temp
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22 |
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23 | ldi akku, $10
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24 | out TWBR, akku
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25 |
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26 | ldi akku, (1 << TWINT) | (1 << TWSTA) | (1 << TWEN);
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27 | out TWCR, akku
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28 |
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29 | ldi akku, (0 << TWPS1) | (0 << TWPS0) ;
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30 | out TWSR, akku
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31 |
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32 | rcall lcd_init ; Display initialisieren
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33 | rcall lcd_clear ; Display löschen
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34 |
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35 | ldi temp1, 0b00001110 ; Display ein, Courser ein, Blinken aus
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36 | rcall lcd_command ; sende Befehl an LCD
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37 | sbi PORTD, 7 ; Beleuchtung ein
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38 |
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39 | clr wert_l
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40 | clr wert_h
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41 |
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42 | rcall i2c_init
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43 |
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44 | LOOP:
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45 |
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46 | ldi i2cadr,$E0+i2cwr ; Set device address and write
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47 | rcall i2c_start ; Send start condition and address
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48 |
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49 | ldi i2cdata,$0 ; Write word address (0x00)
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50 | rcall i2c_do_transfer ; Execute transfer
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51 |
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52 | ldi i2cdata,$51 ; Set write data to 01010101b
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53 | rcall i2c_do_transfer ; Execute transfer
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54 |
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55 | rcall i2c_stop
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56 |
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57 | rcall delay5ms
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58 |
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59 | ldi i2cadr,$E0+i2cwr ; Set device address and write
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60 | rcall i2c_start ; Send start condition and address
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61 |
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62 | ldi i2cdata,$02 ; Write word address
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63 | rcall i2c_do_transfer ; Execute transfer
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64 |
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65 | ldi i2cadr,$E0+i2crd ; Set device address and read
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66 | rcall i2c_rep_start ; Send repeated start condition and address
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67 |
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68 | sec ; Set no acknowledge (read is followed by a stop condition)
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69 | rcall i2c_do_transfer ; Execute transfer (read)
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70 |
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71 | rcall i2c_stop ; Send stop condition - releases bus
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72 |
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73 | mov wert_h, i2cdata
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74 |
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75 |
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76 | ldi i2cadr,$E0+i2cwr ; Set device address and write
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77 | rcall i2c_start ; Send start condition and address
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78 |
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79 | ldi i2cdata,$03 ; Write word address
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80 | rcall i2c_do_transfer ; Execute transfer
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81 |
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82 | ldi i2cadr,$E0+i2crd ; Set device address and read
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83 | rcall i2c_rep_start ; Send repeated start condition and address
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84 |
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85 | sec ; Set no acknowledge (read is followed by a stop condition)
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86 | rcall i2c_do_transfer ; Execute transfer (read)
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87 |
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88 | rcall i2c_stop ; Send stop condition - releases bus
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89 |
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90 | mov wert_l, i2cdata
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91 |
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92 |
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93 | ldi temp1, $80 ; Display ein, Courser ein, Blinken aus
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94 | rcall lcd_command ; sende Befehl an LCD
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95 |
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96 | mov temp2, wert_h
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97 | mov temp3, wert_l
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98 | rcall lcd_number16
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99 |
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100 | rcall warte_1s
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101 |
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102 | rjmp loop ; Loop forewer
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103 |
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104 | warte_1s:
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105 | ; =============================
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106 | ; Warteschleifen-Generator
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107 | ; 1000000 Zyklen:
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108 | ; -----------------------------
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109 | ; warte 999999 Zyklen:
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110 | ldi R27, $09
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111 | WGLOOP3: ldi R28, $BC
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112 | WGLOOP4: ldi R29, $C4
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113 | WGLOOP5: dec R29
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114 | brne WGLOOP5
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115 | dec R28
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116 | brne WGLOOP4
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117 | dec R27
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118 | brne WGLOOP3
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119 | ; -----------------------------
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120 | ; warte 1 Zyklus:
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121 | nop
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122 | ; =============================
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123 | ret
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124 |
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125 | .include "lcd-routines.asm" ; include routine für LCD
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126 | .include "avr300.asm" ; include routine für LCD
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