Hallo,
ich möchte im AVR-Studio4 folgendes PWM-Programm "build"en. Dabei
erhalte ich folgende Fehlermeldung:
c:/program files (x86)/atmel/avr tools/avr
toolchain/bin/../lib/gcc/avr/4.5.1/../../../../avr/bin/ld.exe:
_motor2.map: No such file: No such file or Directory
woran liegt das?
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1 | #include<avr/io.h>
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2 | #define F_CPU 20000000UL //Taktfrequenz 20MHz
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3 | #include<util/delay.h> // Verzögerung
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4 |
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5 | int main(void)
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6 | {
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7 | DDRB |= (1<<PB0); //initialisieren Output 14 [Motor rechtslauf]
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8 | DDRD |= (1<<PD5); //initialisieren Output 11 [LED]
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9 | TCCR2B = (1<<CS21)|(1<<CS20); //Clock select
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10 | TCCR2A = (1<<COM2A1) | (1<<WGM21) | (1<<WGM20); //Waveform generation mode
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11 | OCR2A = 127; //50% cycle
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12 | uint8_t speed; //unsigned int Variabelle speed
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13 | PORTD |= (1<<PD5); //LED einschalten
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14 | while(1)
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15 | {
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16 | // increasing speed
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17 | for (speed = 0; speed < 255; ++speed)
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18 | {
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19 | // set the speed as duty cycle
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20 | OCR2A = speed;
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21 | //Verzögerung um Änderung zu erkennen
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22 | _delay_ms(10);
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23 | }
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24 | // decreasing speed
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25 | for (speed = 255; speed > 0; --speed)
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26 | {
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27 | // set the speed as duty cycle
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28 | OCR2A = speed;
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29 | //Verzögerung, um Änderung zu erkennen
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30 | _delay_ms(10);
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31 | }
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32 | }
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33 | return 0;
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34 | }
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genau so bei dem Programm:
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1 | #include<avr/io.h>
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2 | #define F_CPU 20000000UL //Taktfrequenz 20MHz
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3 | #include<util/delay.h> // Verzögerung
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4 |
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5 | int main(void)
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6 | {
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7 | unsigned char duty_cyc_a,duty_cyc_b;
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8 | DDRB |= (1 << PB0); //initialisieren Output 14 [4A]
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9 | DDRD |= (1 << PD5); //initialisieren Output 11 [LED]
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10 |
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11 | PORTD |= (1<<PD5); //LED einschalten
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12 | // Initial TIMER0 Fast PWM
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13 | // Fast PWM Frequency = fclk / (N * 256), Where N is the Prescaler
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14 | // f_PWM = 11059200 / (64 * 256) = 675 Hz
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15 | TCCR0A = 0b10100011; // Fast PWM 8 Bit, Clear OCA0/OCB0 on Compare Match, Set on TOP
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16 | TCCR0B = 0b00000011; // Used 64 Prescaler
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17 | TCNT0 = 0; // Reset TCNT0
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18 | OCR0A = 0; // Initial the Output Compare register A & B
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19 | OCR0B = 0;
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20 | duty_cyc_a=0; // Initial Duty Cycle for Channel A
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21 | duty_cyc_b=255; // Initial Duty Cycle for Channel B
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22 |
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23 | for(;;) // Loop Forever
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24 | {
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25 | while(duty_cyc_a < 255) {
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26 | OCR0A=duty_cyc_a++;
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27 | OCR0B=duty_cyc_b--;
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28 | _delay_ms(10);
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29 | }
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30 |
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31 | while(duty_cyc_b < 255) {
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32 | OCR0A=duty_cyc_a--;
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33 | OCR0B=duty_cyc_b++;
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34 | _delay_ms(10);
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35 | }
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36 | }
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37 | return 0;
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38 | }
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