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Why is no PWM signal generated using Timer 2?
Stable frequency generationWhy does timer ISR not execute?32u4 timer 4 pwm frequency helpThe difference between “time_t” and “DateTime”Timer CTC Set and Clear modes — How to un-Clear and un-Set?Timer2 “Clear OC2B on Compare Match” not working as expected in CTC modeTraffic lights using timer8 bits 62.5kHz PWM signalInaccurate PWM Signal Frequency and TimingWhy are Arduino timer registers not 0?
I managed to work with timer 0 and 1 but am unable to generate a PWM with timer 2 in my atmega328p.
This is the code:
#include <avr/io.h>
int main(void)
= (1 << DDD6);
/* 50% duty cycle */
OCR2A = 128;
/* fast PWM */
TCCR2A
Could someone explain what the issue is and why I am not seeing a pwm signal on pin 6 of my arduino uno board?
Thanks
timers
edited 7 hours ago
Duncan C
1,9801618
asked 8 hours ago
traduceradtraducerad
1062
New contributor
traducerad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
I managed to work with timer 0 and 1 but am unable to generate a PWM with timer 2 in my atmega328p.
This is the code:
#include <avr/io.h>
int main(void)
= (1 << DDD6);
/* 50% duty cycle */
OCR2A = 128;
/* fast PWM */
TCCR2A
Could someone explain what the issue is and why I am not seeing a pwm signal on pin 6 of my arduino uno board?
Thanks
timers
edited 7 hours ago
Duncan C
1,9801618
asked 8 hours ago
traduceradtraducerad
1062
New contributor
traducerad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
I managed to work with timer 0 and 1 but am unable to generate a PWM with timer 2 in my atmega328p.
This is the code:
#include <avr/io.h>
int main(void)
= (1 << DDD6);
/* 50% duty cycle */
OCR2A = 128;
/* fast PWM */
TCCR2A
Could someone explain what the issue is and why I am not seeing a pwm signal on pin 6 of my arduino uno board?
Thanks
timers
edited 7 hours ago
Duncan C
1,9801618
asked 8 hours ago
traduceradtraducerad
1062
New contributor
traducerad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I managed to work with timer 0 and 1 but am unable to generate a PWM with timer 2 in my atmega328p.
This is the code:
#include <avr/io.h>
int main(void)
= (1 << DDD6);
/* 50% duty cycle */
OCR2A = 128;
/* fast PWM */
TCCR2A
Could someone explain what the issue is and why I am not seeing a pwm signal on pin 6 of my arduino uno board?
Thanks
timers
timers
edited 7 hours ago
Duncan C
1,9801618
asked 8 hours ago
traduceradtraducerad
1062
New contributor
traducerad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 7 hours ago
Duncan C
1,9801618
asked 8 hours ago
traduceradtraducerad
1062
New contributor
traducerad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 7 hours ago
Duncan C
1,9801618
edited 7 hours ago
Duncan C
1,9801618
edited 7 hours ago
Duncan C
1,9801618
1,9801618
asked 8 hours ago
traduceradtraducerad
1062
New contributor
traducerad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 8 hours ago
traduceradtraducerad
1062
asked 8 hours ago
traduceradtraducerad
1062
1062
New contributor
traducerad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
traducerad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
traducerad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
The output compare unit of timer 2 is connected to pins PB3 (OC2A) and PD3 (OC2B). So you have to configure those as outputs.
Keep in mind that you can't choose any pin when using hardware pwm, this hardware feature is linked to fix pins.
Edit: you also have to set COM2A1 in TCCR2A. Otherwise OC2A is disconnected from the output compare unit (ref: Table 17-3 in datasheet).
The effect of COM2A0/1 depends on the configuration in WGM20-WGM22.
The same applies to OC2B respectively.
answered 7 hours ago
Sim SonSim Son
966
I tried what you suggested, but that doesn't seem to work: paste.ubuntu.com/p/K8KmKnqyvV Any suggestions?
– traducerad
1 hour ago
I compiled/flashed your code and I found that inTCCR2Ayou have to setCOM2A1(see my edit).
– Sim Son
36 mins ago
add a comment |
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1 Answer
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active
oldest
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
The output compare unit of timer 2 is connected to pins PB3 (OC2A) and PD3 (OC2B). So you have to configure those as outputs.
Keep in mind that you can't choose any pin when using hardware pwm, this hardware feature is linked to fix pins.
Edit: you also have to set COM2A1 in TCCR2A. Otherwise OC2A is disconnected from the output compare unit (ref: Table 17-3 in datasheet).
The effect of COM2A0/1 depends on the configuration in WGM20-WGM22.
The same applies to OC2B respectively.
answered 7 hours ago
Sim SonSim Son
966
I tried what you suggested, but that doesn't seem to work: paste.ubuntu.com/p/K8KmKnqyvV Any suggestions?
– traducerad
1 hour ago
I compiled/flashed your code and I found that inTCCR2Ayou have to setCOM2A1(see my edit).
– Sim Son
36 mins ago
add a comment |
The output compare unit of timer 2 is connected to pins PB3 (OC2A) and PD3 (OC2B). So you have to configure those as outputs.
Keep in mind that you can't choose any pin when using hardware pwm, this hardware feature is linked to fix pins.
Edit: you also have to set COM2A1 in TCCR2A. Otherwise OC2A is disconnected from the output compare unit (ref: Table 17-3 in datasheet).
The effect of COM2A0/1 depends on the configuration in WGM20-WGM22.
The same applies to OC2B respectively.
answered 7 hours ago
Sim SonSim Son
966
I tried what you suggested, but that doesn't seem to work: paste.ubuntu.com/p/K8KmKnqyvV Any suggestions?
– traducerad
1 hour ago
I compiled/flashed your code and I found that inTCCR2Ayou have to setCOM2A1(see my edit).
– Sim Son
36 mins ago
add a comment |
The output compare unit of timer 2 is connected to pins PB3 (OC2A) and PD3 (OC2B). So you have to configure those as outputs.
Keep in mind that you can't choose any pin when using hardware pwm, this hardware feature is linked to fix pins.
Edit: you also have to set COM2A1 in TCCR2A. Otherwise OC2A is disconnected from the output compare unit (ref: Table 17-3 in datasheet).
The effect of COM2A0/1 depends on the configuration in WGM20-WGM22.
The same applies to OC2B respectively.
answered 7 hours ago
Sim SonSim Son
966
The output compare unit of timer 2 is connected to pins PB3 (OC2A) and PD3 (OC2B). So you have to configure those as outputs.
Keep in mind that you can't choose any pin when using hardware pwm, this hardware feature is linked to fix pins.
Edit: you also have to set COM2A1 in TCCR2A. Otherwise OC2A is disconnected from the output compare unit (ref: Table 17-3 in datasheet).
The effect of COM2A0/1 depends on the configuration in WGM20-WGM22.
The same applies to OC2B respectively.
answered 7 hours ago
Sim SonSim Son
966
edited 36 mins ago
answered 7 hours ago
Sim SonSim Son
966
answered 7 hours ago
Sim SonSim Son
966
answered 7 hours ago
Sim SonSim Son
966
966
I tried what you suggested, but that doesn't seem to work: paste.ubuntu.com/p/K8KmKnqyvV Any suggestions?
– traducerad
1 hour ago
I compiled/flashed your code and I found that inTCCR2Ayou have to setCOM2A1(see my edit).
– Sim Son
36 mins ago
add a comment |
I tried what you suggested, but that doesn't seem to work: paste.ubuntu.com/p/K8KmKnqyvV Any suggestions?
– traducerad
1 hour ago
I compiled/flashed your code and I found that inTCCR2Ayou have to setCOM2A1(see my edit).
– Sim Son
36 mins ago
I tried what you suggested, but that doesn't seem to work: paste.ubuntu.com/p/K8KmKnqyvV Any suggestions?
– traducerad
1 hour ago
I tried what you suggested, but that doesn't seem to work: paste.ubuntu.com/p/K8KmKnqyvV Any suggestions?
– traducerad
1 hour ago
I compiled/flashed your code and I found that in
TCCR2A you have to set COM2A1 (see my edit).– Sim Son
36 mins ago
I compiled/flashed your code and I found that in
TCCR2A you have to set COM2A1 (see my edit).– Sim Son
36 mins ago
add a comment |
traducerad is a new contributor. Be nice, and check out our Code of Conduct.
traducerad is a new contributor. Be nice, and check out our Code of Conduct.
traducerad is a new contributor. Be nice, and check out our Code of Conduct.
traducerad is a new contributor. Be nice, and check out our Code of Conduct.
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