Guten Tag,
ich habe gestern einen Hüllkurverngenerator für einen ATMEGA2560
geschrieben, der wie erwünscht funktioniert. Jetzt möchte ich diesen auf
einen ATTiny44 sortieren, was aber nicht wirklich funktioniert.
Es scheint so als ob die ISR Vom Compare-Match des TIMER0 nicht
aufgerufen wird.
Ich sitze jetzt schon länger dran und finde den Fehler nicht.
Hier mein nicht ganz so schöner Code :
1 | #include <stdio.h>
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2 | #include <avr/io.h>
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3 | #include <avr/interrupt.h>
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4 |
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5 |
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6 | const int ADP_A = 0x01;
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7 | const int ADP_D = 0x02;
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8 | const int ADP_S = 0x03;
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9 | const int ADP_R = 0x04;
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10 | const double FCPU = 8000000;
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11 | const double TMINT = 0.0;
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12 | const float CALC_SEC = 1.5625;
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13 | const float CALC_PER = 0.09765625;
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14 |
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15 | int pot_attack = 0;
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16 | int pot_decay = 0;
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17 | int pot_sustain = 0;
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18 | int pot_release = 0;
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19 |
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20 | double t_attack = 0;
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21 | double t_decay = 0;
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22 | double t_release = 0;
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23 | double l_sustain = 0;
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24 |
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25 | float c_attack = 0;
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26 | float c_decay = 0;
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27 | float c_release = 0;
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28 |
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29 | int h_status = 0;
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30 | double h_output = 0;
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31 |
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32 | int h_gate = 0;
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33 |
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34 | void h_tick(){
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35 | switch(h_status){
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36 | case 0:
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37 | h_output += c_attack;
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38 | if(h_output >= 100){
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39 | h_output = 100;
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40 | h_status++;
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41 | }
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42 | break;
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43 | case 1:
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44 | h_output -= c_decay;
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45 | if(h_output <= l_sustain){
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46 | h_output = l_sustain;
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47 | h_status++;
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48 | }
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49 | break;
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50 |
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51 | case 3:
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52 | h_output -= c_release;
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53 | if(h_output <= 0){
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54 | h_output = 0;
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55 | h_status++;
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56 | }
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57 | break;
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58 | }
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59 | }
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60 | ISR(TIMER0_COMPA_vect){
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61 | PORTA|= (1<<PA7);
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62 | pot_attack = IO_GETADC(ADP_A);
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63 | pot_decay = IO_GETADC(ADP_D);
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64 | pot_sustain = IO_GETADC(ADP_S);
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65 | pot_release = IO_GETADC(ADP_R);
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66 |
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67 | t_attack = (pot_attack/4) * CALC_SEC;
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68 | t_decay = (pot_decay/4) * CALC_SEC;
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69 | t_release = (pot_release/4) * CALC_SEC;
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70 | l_sustain = (pot_sustain) * CALC_PER;
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71 |
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72 | c_attack = 100 / t_attack;
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73 | c_decay = (100-l_sustain) / t_decay;
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74 | c_release = l_sustain / t_release;
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75 |
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76 | if(PINB & (1<<PB1)) {
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77 | h_gate = 0;
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78 | }else{
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79 | if(h_gate == 0){
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80 | h_gate = 1;
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81 | h_status = 0;
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82 | }
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83 | }
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84 | if((!h_gate)&&(h_status < 3)){h_status = 3;}
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85 |
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86 | h_tick();
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87 |
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88 | OCR1A = (h_output*2.55);
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89 |
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90 |
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91 | }
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92 |
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93 | void IO_INITTIMER(){
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94 | TCCR0A = 0;
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95 | TCCR0B = 0;
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96 | OCR0A = 156; //ca 10ms
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97 |
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98 | TCCR0B |= (1 << WGM12);
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99 |
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100 | TCCR0B |= (1 << WGM02);
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101 |
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102 | TCCR0B |= (1 << CS00);
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103 | TCCR0B |= (1 << CS02);
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104 |
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105 |
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106 | TIMSK0 = (1<<OCIE0A);
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107 |
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108 | DDRA=(1<<PA6)|(1<<PA7);
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109 | ICR1 = 255;
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110 | TCCR1A = (1<<COM1A1)|(1<<COM1B1)|(1<<WGM11);
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111 | TCCR1B = (1<<WGM13)|(1<<WGM12) | (1<<CS10);
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112 |
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113 | }
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114 | void IO_INITPIN(){
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115 | DDRB = 0x00;
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116 |
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117 |
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118 | }
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119 | void IO_INITADC(){
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120 | ADMUX = 0x00;
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121 | ADCSRA = (1<<ADPS2) | (1<<ADPS1) | (1<<ADPS0);
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122 | ADCSRA |= (1<<ADEN);
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123 |
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124 | ADCSRA |= (1<<ADSC);
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125 | while (ADCSRA & (1<<ADSC) ) {
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126 | }
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127 | int DUM = ADCL + (ADCH<<8);
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128 | }
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129 |
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130 | int IO_GETADC(int PIN){
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131 | int ADPIN = PIN & 0x1F;
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132 | ADMUX &= 0b11100000;
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133 | ADMUX |= ADPIN;
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134 | ADCSRA |= (1<<ADSC);
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135 | while (ADCSRA & (1<<ADSC) ) {
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136 | }
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137 | return ADCL + (ADCH<<8);
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138 | }
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139 |
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140 | int main(void) {
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141 | cli();
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142 | IO_INITPIN();
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143 | IO_INITADC();
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144 | IO_INITTIMER();
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145 | sei();
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146 |
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147 | while(1){
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148 |
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149 | }
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150 |
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151 |
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152 | return 0;
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153 | }
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