This worked for me on my RPi 4B. Just ensure you have the last version of RPi.GPIO but installed from pip (it was newer) than apt-get: Remove current RPi.GPIO versions: sudo apt-get purge python{,3}-rpi.gpio Update pip first: sudo -H pip2 install --upgrade pip sudo -H pip3 install --upgrade pip Install RPi.GPIO from updated pip:

2016年1月1日 · Is there documentation for RPi.GPIO? I have searched the web and can't find anything. I know I can use pydoc or help() but this produces the following:-wait_for_edge(...) Wait for an edge. Returns the channel number or None on timeout. channel - either board pin number or BCM number depending on which mode is set.

A Raspberry Pi pin (GPIO) gives me a 23 mA max current (3.43 V) when I set it to on (using pi4j or RPI.GPIO). I think the maximum permitted is 30 mA, otherwise your Raspberry Pi is dead. You can check it yourself by using a multimeter connected in series.

2015年8月13日 · As far as I am aware only the RPi.GPIO and RPIO.GPIO Python modules have a cleanup method. The cleanup method sets all the gpios you have used to be inputs and disables the internal pull-ups/downs for those gpios. My pigpio Python module does not have a cleanup method, neither does the wiringPi2 Python module as far as I am aware.

2018年12月15日 · Yes you can supply 5v on the GPIO pin. BUT, it has no backward protection and it was not really designed to be a 5volt input pin. the 3.3v pin can also be powered with 3.3v as the regulator has build in protection- but again it leaves your BCM unprotected! Typically any power pins on GPIO area are used to power extended circuits.

2021年1月21日 · Use GPIO.setwarnings(False) to disable warnings.", 1); } The line gpio_function(gpio) (defined in c_gpio.c) identifies the current pin function returning 0 if input, 1 if output, or something else if it has a special function such as SPI. gpio_direction is an array used

2024年8月12日 · RPi.GPIO does not work on the Pi5. As far as I am aware the GPIO sysfs interface has never supported pulls of any kind. Please be aware that the GPIO sysfs interface is deprecated. Your only choice via the kernel is to use the gpiochip interface.

2020年11月13日 · In RPI.GPIO, "debouncing" seems to mean that if the event you're waiting for ("falling edge") happened less than bouncetime milliseconds ago, we ignore it. Consider the following signal, representing a noisy switch that has been closed and then opened.

2023年12月11日 · I too have questions re "The future of GPIO access on Pi 5"; hopefully, the questions here are answerable questions: While researching my question, one of the references that attracted my attention was this post by 6by9 in the RPi forum: libgpio is the correct answer for any variant of Pi now.

i was printing the input from a RF433 MHZ receiver. I'm using this simple code, just to see what was coming in: #!/usr/bin/python # Hello world python print "Gestart" import RPi.GPIO as GPIO GPIO.