{"id":94,"date":"2017-05-11T20:10:04","date_gmt":"2017-05-11T20:10:04","guid":{"rendered":"http:\/\/iludis.de\/?p=94"},"modified":"2018-12-24T15:58:07","modified_gmt":"2018-12-24T15:58:07","slug":"timersteuerung-am-uno-per-registern","status":"publish","type":"page","link":"https:\/\/iludis.de\/?page_id=94","title":{"rendered":"Timerinterrupts am Uno: Timer 2"},"content":{"rendered":"

Funktionierendes Script, um Timer-Register Nr. 2 am Atmel AVR 328P zu schalten. Besonderheiten: im CTC-Modus bleiben die Pins 3 und 11 passiv, es m\u00fcssen aktiv die Timer-Interrupts gesetzt werden. Im 011-Fast-PWM werden automatisch die Pins 3 und 11 angesteuert. Achtung: die ‚tone()‘-Funktion l\u00e4uft nicht mehr bei Nutzung de Timer2-Registers.<\/p>\n

<span style="color: #00979c;">void<\/span> <span style="color: #5e6d03;">setup<\/span><span style="color: #000000;">(<\/span><span style="color: #000000;">)<\/span> <span style="color: #000000;">{<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/Disable Interrupts, damit man die Register setzen kann.<\/span>\r\n \u00a0<span style="color: #000000;">cli<\/span><span style="color: #000000;">(<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">;<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/ BIT Nr. \u00a0\u00a0\u00a0\u00a0\u00a01 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a02 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a03 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a04 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a05 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a06 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a07 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a08<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/ TCCR2A = [ COM2A1 | COM2A0 | COM2B1 | COM2B0 | \u00a0\u00a0-- \u00a0\u00a0| \u00a0\u00a0-- \u00a0\u00a0| \u00a0WGM21 | WGM20 ]<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/ TCCR2B = [ FOC2A \u00a0| FOC2B \u00a0| \u00a0\u00a0-- \u00a0\u00a0| \u00a0\u00a0-- \u00a0\u00a0| \u00a0WGM22 | \u00a0CS22 \u00a0| \u00a0CS21 \u00a0| CS20 \u00a0]<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/Register 2A und 2B l\u00f6schen.<\/span>\r\n \u00a0<span style="color: #000000;">TCCR2A<\/span> <span style="color: #434f54;">=<\/span> <span style="color: #000000;">0<\/span><span style="color: #000000;">;<\/span>\r\n \u00a0<span style="color: #000000;">TCCR2B<\/span> <span style="color: #434f54;">=<\/span> <span style="color: #000000;">0<\/span><span style="color: #000000;">;<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/Counter auf 0 zur\u00fccksetzen<\/span>\r\n \u00a0<span style="color: #000000;">TCNT2<\/span> \u00a0<span style="color: #434f54;">=<\/span> <span style="color: #000000;">0<\/span><span style="color: #000000;">;<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/Compare Match Output, Funktionsmodus setzen<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/ 00: OC2A aus | 10: NichtInvertiert | 11: Invertiert<\/span>\r\n \u00a0<span style="color: #000000;">TCCR2A<\/span> <span style="color: #434f54;">|=<\/span> <span style="color: #000000;">(<\/span><span style="color: #000000;">1<\/span> <span style="color: #434f54;">&lt;&lt;<\/span> <span style="color: #000000;">COM2A1<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">;<\/span>\r\n \u00a0<span style="color: #000000;">TCCR2A<\/span> <span style="color: #434f54;">|=<\/span> <span style="color: #000000;">(<\/span><span style="color: #000000;">0<\/span> <span style="color: #434f54;">&lt;&lt;<\/span> <span style="color: #000000;">COM2A0<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">;<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/ 00: OC2B aus | 10: NichtInvertiert | 11: Invertiert<\/span>\r\n \u00a0<span style="color: #000000;">TCCR2A<\/span> <span style="color: #434f54;">|=<\/span> <span style="color: #000000;">(<\/span><span style="color: #000000;">1<\/span> <span style="color: #434f54;">&lt;&lt;<\/span> <span style="color: #000000;">COM2B1<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">;<\/span>\r\n \u00a0<span style="color: #000000;">TCCR2A<\/span> <span style="color: #434f54;">|=<\/span> <span style="color: #000000;">(<\/span><span style="color: #000000;">0<\/span> <span style="color: #434f54;">&lt;&lt;<\/span> <span style="color: #000000;">COM2B0<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">;<\/span>\r\n\r\n \u00a0<span style="color: #434f54;">\/\/WGM: Waveform Generation Bits<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/100: PWM Phasenkorrigiert bei 255 \u00a0\u00a0| 010: CTC Clear Timer on Compare \u00a0!!!!<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/101: PWM Phasenkorrigiert bei OCR0A | 011: Fast-PWM bei OCR2A und OCR2B!!!!<\/span>\r\n \u00a0<span style="color: #000000;">TCCR2B<\/span> <span style="color: #434f54;">|=<\/span> <span style="color: #000000;">(<\/span><span style="color: #000000;">0<\/span> <span style="color: #434f54;">&lt;&lt;<\/span> <span style="color: #000000;">WGM22<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">;<\/span>\r\n \u00a0<span style="color: #000000;">TCCR2A<\/span> <span style="color: #434f54;">|=<\/span> <span style="color: #000000;">(<\/span><span style="color: #000000;">1<\/span> <span style="color: #434f54;">&lt;&lt;<\/span> <span style="color: #000000;">WGM21<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">;<\/span>\r\n \u00a0<span style="color: #000000;">TCCR2A<\/span> <span style="color: #434f54;">|=<\/span> <span style="color: #000000;">(<\/span><span style="color: #000000;">0<\/span> <span style="color: #434f54;">&lt;&lt;<\/span> <span style="color: #000000;">WGM20<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">;<\/span>\r\n\r\n \u00a0<span style="color: #434f54;">\/\/ Prescaler Values, Basis ist 16 MHz; \u00a0000: "Disabled" Timer ist ausgeschaltet<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/ 001: \/1 | 010: \/8 | 011: \/32 | 100: \/64 DEFAULT | 101: \/128 | 110: \/256 | 111: \/1024<\/span>\r\n \u00a0<span style="color: #000000;">TCCR2B<\/span> <span style="color: #434f54;">|=<\/span> <span style="color: #000000;">(<\/span><span style="color: #000000;">1<\/span> <span style="color: #434f54;">&lt;&lt;<\/span> <span style="color: #000000;">CS22<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">;<\/span>\r\n \u00a0<span style="color: #000000;">TCCR2B<\/span> <span style="color: #434f54;">|=<\/span> <span style="color: #000000;">(<\/span><span style="color: #000000;">0<\/span> <span style="color: #434f54;">&lt;&lt;<\/span> <span style="color: #000000;">CS21<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">;<\/span>\r\n \u00a0<span style="color: #000000;">TCCR2B<\/span> <span style="color: #434f54;">|=<\/span> <span style="color: #000000;">(<\/span><span style="color: #000000;">1<\/span> <span style="color: #434f54;">&lt;&lt;<\/span> <span style="color: #000000;">CS20<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">;<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/Duty Cyles f\u00fcr die Pins: Output Compare Register<\/span>\r\n \u00a0<span style="color: #000000;">OCR2A<\/span> <span style="color: #434f54;">=<\/span> <span style="color: #000000;">255<\/span><span style="color: #000000;">;<\/span> <span style="color: #434f54;">\/\/ Pin 11 f\u00fcr 011-Fast-PWM-Modus und beliebigem Pin bei 010-CTC-Modus<\/span>\r\n \u00a0<span style="color: #000000;">OCR2B<\/span> <span style="color: #434f54;">=<\/span> <span style="color: #000000;">1<\/span><span style="color: #000000;">;<\/span> <span style="color: #434f54;">\/\/ Pin 3<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/ Nur relevant bei CTC-Modus<\/span>\r\n \u00a0<span style="color: #000000;">TIMSK2<\/span> <span style="color: #434f54;">|=<\/span> <span style="color: #000000;">(<\/span><span style="color: #000000;">1<\/span> <span style="color: #434f54;">&lt;&lt;<\/span> <span style="color: #000000;">OCIE2A<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">;<\/span> <span style="color: #434f54;">\/\/ F\u00fcr Interrupt-Einschalten f\u00fcr OCR2A bei CTC-Modus an beliebigem Pin.<\/span>\r\n \u00a0<span style="color: #000000;">TIMSK2<\/span> <span style="color: #434f54;">|=<\/span> <span style="color: #000000;">(<\/span><span style="color: #000000;">1<\/span> <span style="color: #434f54;">&lt;&lt;<\/span> <span style="color: #000000;">OCIE2B<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">;<\/span> <span style="color: #434f54;">\/\/ F\u00fcr Interrupt-Einschalten f\u00fcr OCR2A bei CTC-Modus an beliebigem Pin.<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/Enable interrupts<\/span>\r\n \u00a0<span style="color: #000000;">sei<\/span><span style="color: #000000;">(<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">;<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/<\/span>\r\n \u00a0<span style="color: #434f54;">\/\/F\u00fcr Fast-PWM-Modus 011<\/span>\r\n \u00a0<span style="color: #d35400;">pinMode<\/span><span style="color: #000000;">(<\/span><span style="color: #000000;">3<\/span><span style="color: #434f54;">,<\/span> <span style="color: #00979c;">OUTPUT<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">;<\/span>\r\n \u00a0<span style="color: #d35400;">pinMode<\/span><span style="color: #000000;">(<\/span><span style="color: #000000;">11<\/span><span style="color: #434f54;">,<\/span> <span style="color: #00979c;">OUTPUT<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">;<\/span>\r\n \u00a0\r\n \u00a0<span style="color: #434f54;">\/\/F\u00fcr CTC-Modus an beliebigem Pin, hier 12:<\/span>\r\n \u00a0<span style="color: #d35400;">pinMode<\/span><span style="color: #000000;">(<\/span><span style="color: #000000;">12<\/span><span style="color: #434f54;">,<\/span> <span style="color: #00979c;">OUTPUT<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">;<\/span>\r\n \u00a0<span style="color: #d35400;">pinMode<\/span><span style="color: #000000;">(<\/span><span style="color: #000000;">13<\/span><span style="color: #434f54;">,<\/span> <span style="color: #00979c;">OUTPUT<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">;<\/span>\r\n<span style="color: #000000;">}<\/span>\r\n\r\n<span style="color: #00979c;">void<\/span> <span style="color: #5e6d03;">loop<\/span><span style="color: #000000;">(<\/span><span style="color: #000000;">)<\/span> <span style="color: #000000;">{<\/span>\r\n<span style="color: #000000;">}<\/span>\r\n\r\n<span style="color: #000000;">ISR<\/span><span style="color: #000000;">(<\/span><span style="color: #000000;">TIMER2_COMPA_vect<\/span><span style="color: #000000;">)<\/span> <span style="color: #000000;">{<\/span>\r\n \u00a0<span style="color: #d35400;">digitalWrite<\/span><span style="color: #000000;">(<\/span><span style="color: #000000;">12<\/span><span style="color: #434f54;">,<\/span><span style="color: #434f54;">!<\/span><span style="color: #d35400;">digitalRead<\/span><span style="color: #000000;">(<\/span><span style="color: #000000;">12<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">;<\/span>\r\n<span style="color: #000000;">}<\/span>\r\n<span style="color: #434f54;">\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/<\/span>\r\n<span style="color: #000000;">ISR<\/span><span style="color: #000000;">(<\/span><span style="color: #000000;">TIMER2_COMPB_vect<\/span><span style="color: #000000;">)<\/span> <span style="color: #000000;">{<\/span>\r\n \u00a0<span style="color: #d35400;">digitalWrite<\/span><span style="color: #000000;">(<\/span><span style="color: #000000;">13<\/span><span style="color: #434f54;">,<\/span><span style="color: #434f54;">!<\/span><span style="color: #d35400;">digitalRead<\/span><span style="color: #000000;">(<\/span><span style="color: #000000;">13<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">)<\/span><span style="color: #000000;">;<\/span>\r\n<span style="color: #000000;">}<\/span>\r\n\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"
Funktionierendes Script, um Timer-Register Nr. 2 am Atmel AVR 328P zu schalten. Besonderheiten: im CTC-Modus bleiben die Pins 3 und 11 passiv, es m\u00fcssen aktiv die Timer-Interrupts gesetzt werden. Im 011-Fast-PWM werden automatisch die Pins 3 und 11 angesteuert. Achtung: die ‚tone()‘-Funktion l\u00e4uft nicht mehr bei Nutzung de Timer2-Registers. <span style="color: #00979c;">void<\/span> <span style="color: #5e6d03;">setup<\/span><span… <\/p>\n
Read more Timerinterrupts am Uno: Timer 2<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":{"0":"post-94","1":"page","2":"type-page","3":"status-publish","5":"entry"},"_links":{"self":[{"href":"https:\/\/iludis.de\/index.php?rest_route=\/wp\/v2\/pages\/94","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iludis.de\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/iludis.de\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/iludis.de\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/iludis.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=94"}],"version-history":[{"count":0,"href":"https:\/\/iludis.de\/index.php?rest_route=\/wp\/v2\/pages\/94\/revisions"}],"wp:attachment":[{"href":"https:\/\/iludis.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=94"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}