Hallo, ich will meinen Atmega 328 programmieren. Nur leider funktioniert meine delay() Funktion nicht. Ich weiß nach 3 Stunden einfach nicht mehr weiter und denke schön langsam ich bin zu blöd zum Programmieren. Wäre jemand so nett, sich meinen Code mal anzusehen? Der Fehler müsste doch in dem delay() drin sein?! Ich poste trotzdem mal den ganzen Code. PORTD,(1<<RESERVE) ist mein Debug-Pin, an dem ich mit dem Oszi hänge.
1 | ///preprocessing
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2 | #include <avr/io.h> |
3 | #include <avr/interrupt.h> |
4 | |
5 | ///define port pins
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6 | //PortB
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7 | #define LCD_CS1 PIN0
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8 | #define LCD_CS2 PIN1
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9 | #define LCD_WRITE PIN2
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10 | #define SIPO_STR PIN3
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11 | #define SIPO_CLK PIN4
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12 | #define PISO_CLK PIN4
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13 | #define SIPO_DS PIN5
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14 | #define PISO_Q7 PIN5
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15 | #define XTAL1 PIN6
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16 | #define XTAL2 PIN7
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17 | //PortC
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18 | #define BatNotLoad PIN0
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19 | #define Uline PIN1
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20 | #define LED_3 PIN2
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21 | #define LED_2 PIN3
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22 | #define ResADC PIN4
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23 | #define UBat PIN5
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24 | //PC6 only ISP! >>reserve
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25 | //PortD
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26 | #define SIM_TxD PIN0 //avr input
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27 | #define SIM_RxD PIN1 //avr output
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28 | #define RESERVE PIN2
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29 | #define SIM_ON PIN3
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30 | #define SIM_Status PIN4
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31 | #define LED_1 PIN5
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32 | #define PISO_PL PIN6
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33 | #define LCD_Data PIN7
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34 | |
35 | ///define clock variables
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36 | struct time{ |
37 | uint16_t _100us; |
38 | uint8_t _s; |
39 | uint8_t _min; |
40 | uint8_t _h; |
41 | uint8_t _date; |
42 | uint8_t _month; |
43 | uint8_t _year; |
44 | };
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45 | struct time systime; |
46 | |
47 | //update system clock ########## datum-monat, schaltjahr
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48 | ISR(TIMER2_OVF_vect){ |
49 | ++systime._100us; |
50 | if(systime._100us>=10000){ |
51 | systime._100us=0; |
52 | ++systime._s; |
53 | if(systime._s>=60){ |
54 | systime._s=0; |
55 | ++systime._min; |
56 | if(systime._min>=60){ |
57 | systime._min=0; |
58 | ++systime._h; |
59 | if(systime._h>=24){ |
60 | systime._h=0; |
61 | ++systime._date; |
62 | }
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63 | }
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64 | }
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65 | }
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66 | }
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67 | |
68 | void delay(uint16_t time){ |
69 | uint16_t tflag; |
70 | tflag = systime._100us; |
71 | while((systime._100us-tflag)<time); |
72 | return; |
73 | }
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74 | |
75 | int main(void) |
76 | {
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77 | ///Reset
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78 | ///configure IOs (0=in; 1=out)
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79 | DDRB = (1<<LCD_CS1)|(1<<LCD_CS2)|(1<<LCD_WRITE)|(1<<SIPO_STR)|(1<<SIPO_CLK)|(1<<SIPO_DS); |
80 | DDRC = (1<<BatNotLoad)|(1<<LED_3)|(1<<LED_2)|(1<<ResADC); |
81 | DDRD = (1<<SIM_RxD)|(1<<SIM_ON)|(1<<LED_1)|(1<<LCD_Data)|(1<<RESERVE); |
82 | ///preset IOs (in: 1=pull up)
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83 | PORTB = 0; |
84 | PORTC = (1<<BatNotLoad); |
85 | PORTD = (1<<RESERVE);//;//(1<<SIM_ON); |
86 | ///initialize clock
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87 | systime._100us=0; |
88 | systime._s=0; |
89 | ///configure Timer2 (8-bit) system clock
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90 | //TOV on OC2A >> WGM22 WGM21 WGM20
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91 | TCCR2A = (1<<WGM20)|(1<<WGM21); |
92 | //system tick = 100u >> 2000clk/8=250 >> CS21
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93 | TCCR2B = (1<<WGM22)|(1<<CS21); |
94 | OCR2A = 249; |
95 | //TOV enable
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96 | TIMSK2 = (1<<TOIE2); |
97 | ///load settings ##########
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98 | |
99 | ///enable interrupts
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100 | sei(); |
101 | |
102 | while(1)//main |
103 | {
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104 | uint8_t test = 5; |
105 | //testout(test);
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106 | for(int i=0; i<100; ++i){ |
107 | PORTD &= ~(1<<RESERVE); |
108 | PORTD |= (1<<RESERVE); |
109 | }
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110 | delay(1); |
111 | for(int i=0; i<100; ++i){ |
112 | PORTD &= ~(1<<RESERVE); |
113 | PORTD |= (1<<RESERVE); |
114 | }
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115 | }
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116 | }
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