Hi Leute
und wieder eine PWM Frage. Ich hab leider nix passendes in der Suche
gefunden, also muss ich jetzt einen neuen Beitrag erstellen...
Folgendes, ich will mit meinem ATmega164P 4 Relais ansteuern. Um energie
zu sparen, will ich die PWMs der Ports PD4,5 (OC1B/OC1A) und PD6,7
(OC2B/OC2A) verwenden.
Jetzt hab ich alles schoen ausm Datenblatt rausgelesen und programmiert.
Leider bekomm ich aber nur am PD6 (OC2B) ein Signal!!
Die anderen Bleiben tot...
Hier ist mal die Definition der Pins
1 | #define OC1A_PWM PD5
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2 | #define OC1A_PWM_PORT PORTD
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3 | #define OC1A_PWM_DDR DDRD
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4 |
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5 | #define OC1B_PWM PD4
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6 | #define OC1B_PWM_PORT PORTD
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7 | #define OC1B_PWM_DDR DDRD
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8 |
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9 | #define OC2A_PWM PD7
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10 | #define OC2A_PWM_PORT PORTD
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11 | #define OC2A_PWM_DDR DDRD
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12 |
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13 | #define OC2B_PWM PD6
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14 | #define OC2B_PWM_PORT PORTD
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15 | #define OC2B_PWM_DDR DDRD
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Dann ist hier mein .c in dem ich die Funktionen und die
Initialisierungen habe
1 | /**** OC1A/B ****************************/
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2 |
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3 | void OC1A_B_PWM_Init(void)
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4 | {
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5 | OC1B_PWM_DDR = (1<< OC1B_PWM);
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6 | OC1A_PWM_DDR = (1<< OC1A_PWM);
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7 |
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8 | TCCR1A = (1<<COM1A1) | (1<<COM1B1) | (1<<WGM10) | (1<<WGM11);
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9 | TCCR1B = (1<<CS10);
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10 | }
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11 |
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12 | void OC1A_PWM_OFF(void)
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13 | {
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14 | OCR1AH = 0x00;
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15 | OCR1AL = 0x00;
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16 | }
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17 |
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18 | void OC1A_PWM_Static(void)
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19 | {
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20 | OCR1AH = 0x00;
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21 | OCR1AL = 0xFF;
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22 | }
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23 |
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24 | void OC1A_PWM_ON_8bit(uint8_t OCRValue)
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25 | {
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26 | OCR1AH = 0x00;
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27 | OCR1AL = OCRValue;
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28 | }
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29 |
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30 | void OC1B_PWM_OFF(void)
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31 | {
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32 | OCR1BH = 0x00;
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33 | OCR1BL = 0x00;
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34 | }
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35 |
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36 | void OC1B_PWM_Static(void)
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37 | {
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38 | OCR1BH = 0x00;
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39 | OCR1BL = 0xFF;
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40 | }
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41 |
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42 | void OC1B_PWM_ON_8bit(uint8_t OCRValue)
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43 | {
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44 | OCR1BH = 0x00;
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45 | OCR1BL = OCRValue;
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46 | }
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47 |
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48 | /**** OC2 ****************************/
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49 |
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50 | void OC2A_B_PWM_Init(void)
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51 | {
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52 | OC2A_PWM_DDR = (1<< OC2A_PWM);
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53 | OC2B_PWM_DDR = (1<< OC2B_PWM);
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54 |
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55 | TCCR2A = (1<<COM2A1) | (1<<COM2B1) | (1<<WGM21) | (1<<WGM20);
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56 | TCCR2B = (1<<CS20);
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57 | }
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58 |
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59 | void OC2A_PWM_OFF(void)
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60 | {
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61 | OCR2A = 0x00;
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62 | }
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63 |
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64 | void OC2A_PWM_Static(void)
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65 | {
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66 | OCR2A = 0xFF;
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67 | }
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68 |
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69 | void OC2A_PWM_ON(uint8_t OCRValue)
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70 | {
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71 | OCR2A = OCRValue;
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72 | }
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73 |
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74 | void OC2B_PWM_OFF(void)
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75 | {
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76 | OCR2B = 0x00;
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77 | }
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78 |
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79 | void OC2B_PWM_Static(void)
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80 | {
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81 | OCR2B = 0xFF;
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82 | }
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83 |
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84 | void OC2B_PWM_ON(uint8_t OCRValue)
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85 | {
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86 | OCR2B = OCRValue;
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87 | }
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und aufrufen tu ich sie so
1 | void Relay1_ON(uint8_t PWM)
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2 | {
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3 | OC1B_PWM_Static();
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4 | _delay_ms(10);
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5 | OC1B_PWM_ON_8bit(PWM);
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6 | }
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7 |
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8 | void Relay1_OFF()
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9 | {
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10 | OC1B_PWM_OFF();
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11 | }
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12 |
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13 | void Relay2_ON(uint8_t PWM)
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14 | {
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15 | OC1A_PWM_Static();
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16 | _delay_ms(10);
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17 | OC1A_PWM_ON_8bit(PWM);
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18 | }
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19 |
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20 | void Relay2_OFF()
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21 | {
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22 | OC1A_PWM_OFF();
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23 | }
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24 |
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25 | void Relay3_ON(uint8_t PWM)
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26 | {
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27 | OC2B_PWM_Static();
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28 | _delay_ms(10);
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29 | OC2B_PWM_ON(PWM);
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30 | }
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31 |
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32 | void Relay3_OFF()
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33 | {
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34 | OC2B_PWM_OFF();
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35 | }
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36 |
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37 | void Relay4_ON(uint8_t PWM)
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38 | {
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39 | OC2A_PWM_Static();
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40 | _delay_ms(10);
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41 | OC2A_PWM_ON(PWM);
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42 | }
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43 |
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44 | void Relay4_OFF()
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45 | {
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46 | OC2A_PWM_OFF();
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47 | }
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Alle 4 PWM-Ports sollten ohne Prescaler, auf Fast PWM (TOP 0xFF)
eingestellt sein....
Hab ich da irgendwo was uebersehen?
mfg
Bastian
