Reactive ProgrammingAssembly - set gpio as inputDetect GPIO button press within time limitchanging values on a GPIO input pin via software/scriptProblem with a button in a scriptRaspberry Pi 3 - GPIO Input not workingGPIO Input Not Detected Within While LoopRead GPIO pin on web pageIs there a way to use interrupt-driven GPIO input through the sysfs interface without a race condition?Pi Zero Button pressed detected incorrectlygpiozero Button.when_pressed
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Assembly - set gpio as inputDetect GPIO button press within time limitchanging values on a GPIO input pin via software/scriptProblem with a button in a scriptRaspberry Pi 3 - GPIO Input not workingGPIO Input Not Detected Within While LoopRead GPIO pin on web pageIs there a way to use interrupt-driven GPIO input through the sysfs interface without a race condition?Pi Zero Button pressed detected incorrectlygpiozero Button.when_pressed
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The examples I see for the GPIO input are based on a loop which waits and check if the GPIO is receiving any info. Is there a way of just detecting when a button was pressed without using a loop under the hood? I mean, something like, call this function immediatelly after receiving an input at the GPIO.
pi-3 gpio
asked 9 hours ago
Hola Soy Edu Feliz NavidadHola Soy Edu Feliz Navidad
1134
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add a comment |
The examples I see for the GPIO input are based on a loop which waits and check if the GPIO is receiving any info. Is there a way of just detecting when a button was pressed without using a loop under the hood? I mean, something like, call this function immediatelly after receiving an input at the GPIO.
pi-3 gpio
asked 9 hours ago
Hola Soy Edu Feliz NavidadHola Soy Edu Feliz Navidad
1134
New contributor
Hola Soy Edu Feliz Navidad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
3
Hello, the search term you are looking for is interrupts
– Roger Jones
9 hours ago
add a comment |
The examples I see for the GPIO input are based on a loop which waits and check if the GPIO is receiving any info. Is there a way of just detecting when a button was pressed without using a loop under the hood? I mean, something like, call this function immediatelly after receiving an input at the GPIO.
pi-3 gpio
asked 9 hours ago
Hola Soy Edu Feliz NavidadHola Soy Edu Feliz Navidad
1134
New contributor
Hola Soy Edu Feliz Navidad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
The examples I see for the GPIO input are based on a loop which waits and check if the GPIO is receiving any info. Is there a way of just detecting when a button was pressed without using a loop under the hood? I mean, something like, call this function immediatelly after receiving an input at the GPIO.
pi-3 gpio
pi-3 gpio
asked 9 hours ago
Hola Soy Edu Feliz NavidadHola Soy Edu Feliz Navidad
1134
New contributor
Hola Soy Edu Feliz Navidad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 9 hours ago
Hola Soy Edu Feliz NavidadHola Soy Edu Feliz Navidad
1134
New contributor
Hola Soy Edu Feliz Navidad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 9 hours ago
Hola Soy Edu Feliz NavidadHola Soy Edu Feliz Navidad
1134
New contributor
Hola Soy Edu Feliz Navidad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 9 hours ago
Hola Soy Edu Feliz NavidadHola Soy Edu Feliz Navidad
1134
asked 9 hours ago
Hola Soy Edu Feliz NavidadHola Soy Edu Feliz Navidad
1134
1134
New contributor
Hola Soy Edu Feliz Navidad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Hola Soy Edu Feliz Navidad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
3
Hello, the search term you are looking for is interrupts
– Roger Jones
9 hours ago
add a comment |
3
Hello, the search term you are looking for is interrupts
– Roger Jones
9 hours ago
3
3
Hello, the search term you are looking for is interrupts
– Roger Jones
9 hours ago
Hello, the search term you are looking for is interrupts
– Roger Jones
9 hours ago
add a comment |
1 Answer
1
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votes
That's exactly what interrupts do. In python there is a function RPi.GPIO.add_event_detect( GPIO_NUMBER, GPIO.RISING, callback=yourCallback). You then need to define a function yourCallback() where you manage whatever has to happen when the respective gpio senses a RISING edge. A websearch for "raspberry pi gpio interrupt" will reveal several detailed tutorials about that topic.
You still should mind debouncing the button.
answered 8 hours ago
Sim SonSim Son
33617
I vaguely remember that Rpi.GPIO is very newbie considerate and debounces by hardware or software (I forgot which) without newbies even knowing what is the meaning of button bouncing. I remember this well because once I thought I was clever and tried to do debouncing by both hardware and software, but found I wasted time, because Rpi.GPIO always debounces by default. However I am only 80% sure that I remember things correctly.
– tlfong01
1 hour ago
add a comment |
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1 Answer
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1 Answer
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oldest
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active
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votes
That's exactly what interrupts do. In python there is a function RPi.GPIO.add_event_detect( GPIO_NUMBER, GPIO.RISING, callback=yourCallback). You then need to define a function yourCallback() where you manage whatever has to happen when the respective gpio senses a RISING edge. A websearch for "raspberry pi gpio interrupt" will reveal several detailed tutorials about that topic.
You still should mind debouncing the button.
answered 8 hours ago
Sim SonSim Son
33617
I vaguely remember that Rpi.GPIO is very newbie considerate and debounces by hardware or software (I forgot which) without newbies even knowing what is the meaning of button bouncing. I remember this well because once I thought I was clever and tried to do debouncing by both hardware and software, but found I wasted time, because Rpi.GPIO always debounces by default. However I am only 80% sure that I remember things correctly.
– tlfong01
1 hour ago
add a comment |
That's exactly what interrupts do. In python there is a function RPi.GPIO.add_event_detect( GPIO_NUMBER, GPIO.RISING, callback=yourCallback). You then need to define a function yourCallback() where you manage whatever has to happen when the respective gpio senses a RISING edge. A websearch for "raspberry pi gpio interrupt" will reveal several detailed tutorials about that topic.
You still should mind debouncing the button.
answered 8 hours ago
Sim SonSim Son
33617
I vaguely remember that Rpi.GPIO is very newbie considerate and debounces by hardware or software (I forgot which) without newbies even knowing what is the meaning of button bouncing. I remember this well because once I thought I was clever and tried to do debouncing by both hardware and software, but found I wasted time, because Rpi.GPIO always debounces by default. However I am only 80% sure that I remember things correctly.
– tlfong01
1 hour ago
add a comment |
That's exactly what interrupts do. In python there is a function RPi.GPIO.add_event_detect( GPIO_NUMBER, GPIO.RISING, callback=yourCallback). You then need to define a function yourCallback() where you manage whatever has to happen when the respective gpio senses a RISING edge. A websearch for "raspberry pi gpio interrupt" will reveal several detailed tutorials about that topic.
You still should mind debouncing the button.
answered 8 hours ago
Sim SonSim Son
33617
That's exactly what interrupts do. In python there is a function RPi.GPIO.add_event_detect( GPIO_NUMBER, GPIO.RISING, callback=yourCallback). You then need to define a function yourCallback() where you manage whatever has to happen when the respective gpio senses a RISING edge. A websearch for "raspberry pi gpio interrupt" will reveal several detailed tutorials about that topic.
You still should mind debouncing the button.
answered 8 hours ago
Sim SonSim Son
33617
edited 5 hours ago
answered 8 hours ago
Sim SonSim Son
33617
answered 8 hours ago
Sim SonSim Son
33617
answered 8 hours ago
Sim SonSim Son
33617
33617
I vaguely remember that Rpi.GPIO is very newbie considerate and debounces by hardware or software (I forgot which) without newbies even knowing what is the meaning of button bouncing. I remember this well because once I thought I was clever and tried to do debouncing by both hardware and software, but found I wasted time, because Rpi.GPIO always debounces by default. However I am only 80% sure that I remember things correctly.
– tlfong01
1 hour ago
add a comment |
I vaguely remember that Rpi.GPIO is very newbie considerate and debounces by hardware or software (I forgot which) without newbies even knowing what is the meaning of button bouncing. I remember this well because once I thought I was clever and tried to do debouncing by both hardware and software, but found I wasted time, because Rpi.GPIO always debounces by default. However I am only 80% sure that I remember things correctly.
– tlfong01
1 hour ago
I vaguely remember that Rpi.GPIO is very newbie considerate and debounces by hardware or software (I forgot which) without newbies even knowing what is the meaning of button bouncing. I remember this well because once I thought I was clever and tried to do debouncing by both hardware and software, but found I wasted time, because Rpi.GPIO always debounces by default. However I am only 80% sure that I remember things correctly.
– tlfong01
1 hour ago
I vaguely remember that Rpi.GPIO is very newbie considerate and debounces by hardware or software (I forgot which) without newbies even knowing what is the meaning of button bouncing. I remember this well because once I thought I was clever and tried to do debouncing by both hardware and software, but found I wasted time, because Rpi.GPIO always debounces by default. However I am only 80% sure that I remember things correctly.
– tlfong01
1 hour ago
add a comment |
Hola Soy Edu Feliz Navidad is a new contributor. Be nice, and check out our Code of Conduct.
Hola Soy Edu Feliz Navidad is a new contributor. Be nice, and check out our Code of Conduct.
Hola Soy Edu Feliz Navidad is a new contributor. Be nice, and check out our Code of Conduct.
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3
Hello, the search term you are looking for is interrupts
– Roger Jones
9 hours ago