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Control GPIO pins from C
GPIO Interrupt debounceGPIO in kernel module: alternative to gpio_set_valueGetting files from dropboxFrom python script to Kernel ModuleSystel level differences in making a GPIO high in Raspberry PI vs BeagleboneUsing GPIO to emulate another deviceKernel-panic after swtiching from uClibc to glibcFastest way to copy gpio state to memory?Using special pins as gpio
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Most of the libraries, in multiple languages, interact with the GPIO pins via /sys/class/gpio/export, /sys/class/gpio/import, /sys/class/gpio/gpio10/value, etc. However the linux kernel docs clearly state that is the legacy way of doing things.
What is the non legacy way of doing things?
If I understand correctly in kernel space I would use these functions or standard kernel drivers for common GPIO tasks.
What would I use for user space? Is there a Sysfs interface for the non legacy?
PS: I aware the kernel docs state that the legacy integer-based interface although considered deprecated is still usable for compatibility reasons. However I'm not interested in using that legacy code.
kernel
asked 12 hours ago
Simão MartinsSimão Martins
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Most of the libraries, in multiple languages, interact with the GPIO pins via /sys/class/gpio/export, /sys/class/gpio/import, /sys/class/gpio/gpio10/value, etc. However the linux kernel docs clearly state that is the legacy way of doing things.
What is the non legacy way of doing things?
If I understand correctly in kernel space I would use these functions or standard kernel drivers for common GPIO tasks.
What would I use for user space? Is there a Sysfs interface for the non legacy?
PS: I aware the kernel docs state that the legacy integer-based interface although considered deprecated is still usable for compatibility reasons. However I'm not interested in using that legacy code.
kernel
asked 12 hours ago
Simão MartinsSimão Martins
1134 bronze badges
New contributor
Simão Martins is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Most libraries DO NOT interact with the GPIO pins via/sys/class/gpio/exportthey access the hardware directly, although they CAN use kernel services. Certainly WiringPi and AFAIK pigpiod directly access SoC registers.
– Milliways
2 hours ago
add a comment |
Most of the libraries, in multiple languages, interact with the GPIO pins via /sys/class/gpio/export, /sys/class/gpio/import, /sys/class/gpio/gpio10/value, etc. However the linux kernel docs clearly state that is the legacy way of doing things.
What is the non legacy way of doing things?
If I understand correctly in kernel space I would use these functions or standard kernel drivers for common GPIO tasks.
What would I use for user space? Is there a Sysfs interface for the non legacy?
PS: I aware the kernel docs state that the legacy integer-based interface although considered deprecated is still usable for compatibility reasons. However I'm not interested in using that legacy code.
kernel
asked 12 hours ago
Simão MartinsSimão Martins
1134 bronze badges
New contributor
Simão Martins is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Most of the libraries, in multiple languages, interact with the GPIO pins via /sys/class/gpio/export, /sys/class/gpio/import, /sys/class/gpio/gpio10/value, etc. However the linux kernel docs clearly state that is the legacy way of doing things.
What is the non legacy way of doing things?
If I understand correctly in kernel space I would use these functions or standard kernel drivers for common GPIO tasks.
What would I use for user space? Is there a Sysfs interface for the non legacy?
PS: I aware the kernel docs state that the legacy integer-based interface although considered deprecated is still usable for compatibility reasons. However I'm not interested in using that legacy code.
kernel
kernel
asked 12 hours ago
Simão MartinsSimão Martins
1134 bronze badges
New contributor
Simão Martins is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 12 hours ago
Simão MartinsSimão Martins
1134 bronze badges
New contributor
Simão Martins is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 12 hours ago
Simão MartinsSimão Martins
1134 bronze badges
New contributor
Simão Martins is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 12 hours ago
Simão MartinsSimão Martins
1134 bronze badges
asked 12 hours ago
Simão MartinsSimão Martins
1134 bronze badges
1134 bronze badges
New contributor
Simão Martins is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Simão Martins is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Most libraries DO NOT interact with the GPIO pins via/sys/class/gpio/exportthey access the hardware directly, although they CAN use kernel services. Certainly WiringPi and AFAIK pigpiod directly access SoC registers.
– Milliways
2 hours ago
add a comment |
Most libraries DO NOT interact with the GPIO pins via/sys/class/gpio/exportthey access the hardware directly, although they CAN use kernel services. Certainly WiringPi and AFAIK pigpiod directly access SoC registers.
– Milliways
2 hours ago
Most libraries DO NOT interact with the GPIO pins via
/sys/class/gpio/export they access the hardware directly, although they CAN use kernel services. Certainly WiringPi and AFAIK pigpiod directly access SoC registers.– Milliways
2 hours ago
Most libraries DO NOT interact with the GPIO pins via
/sys/class/gpio/export they access the hardware directly, although they CAN use kernel services. Certainly WiringPi and AFAIK pigpiod directly access SoC registers.– Milliways
2 hours ago
add a comment |
1 Answer
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sysfs has been deprecated and has been replaced with libgpiod.
https://www.beyondlogic.org/an-introduction-to-chardev-gpio-and-libgpiod-on-the-raspberry-pi/
The interactions are with /dev/gpiochipx rather than /sys/class/gpio.
The only obvious improvement (to me) is that GPIO events now have a time-stamp.
answered 11 hours ago
joanjoan
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sysfs has been deprecated and has been replaced with libgpiod.
https://www.beyondlogic.org/an-introduction-to-chardev-gpio-and-libgpiod-on-the-raspberry-pi/
The interactions are with /dev/gpiochipx rather than /sys/class/gpio.
The only obvious improvement (to me) is that GPIO events now have a time-stamp.
answered 11 hours ago
joanjoan
52.1k3 gold badges52 silver badges84 bronze badges
add a comment |
sysfs has been deprecated and has been replaced with libgpiod.
https://www.beyondlogic.org/an-introduction-to-chardev-gpio-and-libgpiod-on-the-raspberry-pi/
The interactions are with /dev/gpiochipx rather than /sys/class/gpio.
The only obvious improvement (to me) is that GPIO events now have a time-stamp.
answered 11 hours ago
joanjoan
52.1k3 gold badges52 silver badges84 bronze badges
add a comment |
sysfs has been deprecated and has been replaced with libgpiod.
https://www.beyondlogic.org/an-introduction-to-chardev-gpio-and-libgpiod-on-the-raspberry-pi/
The interactions are with /dev/gpiochipx rather than /sys/class/gpio.
The only obvious improvement (to me) is that GPIO events now have a time-stamp.
answered 11 hours ago
joanjoan
52.1k3 gold badges52 silver badges84 bronze badges
sysfs has been deprecated and has been replaced with libgpiod.
https://www.beyondlogic.org/an-introduction-to-chardev-gpio-and-libgpiod-on-the-raspberry-pi/
The interactions are with /dev/gpiochipx rather than /sys/class/gpio.
The only obvious improvement (to me) is that GPIO events now have a time-stamp.
answered 11 hours ago
joanjoan
52.1k3 gold badges52 silver badges84 bronze badges
answered 11 hours ago
joanjoan
52.1k3 gold badges52 silver badges84 bronze badges
answered 11 hours ago
joanjoan
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answered 11 hours ago
joanjoan
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Most libraries DO NOT interact with the GPIO pins via
/sys/class/gpio/exportthey access the hardware directly, although they CAN use kernel services. Certainly WiringPi and AFAIK pigpiod directly access SoC registers.– Milliways
2 hours ago