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Ken Brooks — Mon, 01 Jul 2024 15:19:00 -0000

I tried the standard install command on my apple silicon macintosh. It didn't work because a header file called sys/epoll.h is missing from the system.A little research suggests that this header file belongs to Linux, not clear that it belongs to Macintosh. Here's the full output:

% pip install RPi.GPIO
Collecting RPi.GPIO
  Downloading RPi.GPIO-0.7.1.tar.gz (29 kB)
  Preparing metadata (setup.py) ... done
Building wheels for collected packages: RPi.GPIO
  Building wheel for RPi.GPIO (setup.py) ... error
  error: subprocess-exited-with-error

  × python setup.py bdist_wheel did not run successfully.
  │ exit code: 1
  ╰─> [37 lines of output]
      running bdist_wheel
      running build
      running build_py
      creating build
      creating build/lib.macosx-10.9-universal2-cpython-312
      creating build/lib.macosx-10.9-universal2-cpython-312/RPi
      copying RPi/__init__.py -> build/lib.macosx-10.9-universal2-cpython-312/RPi
      creating build/lib.macosx-10.9-universal2-cpython-312/RPi/GPIO
      copying RPi/GPIO/__init__.py -> build/lib.macosx-10.9-universal2-cpython-312/RPi/GPIO
      running build_ext
      building 'RPi._GPIO' extension
      creating build/temp.macosx-10.9-universal2-cpython-312
      creating build/temp.macosx-10.9-universal2-cpython-312/source
      clang -fno-strict-overflow -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -O3 -Wall -arch arm64 -arch x86_64 -g -I/Library/Frameworks/Python.framework/Versions/3.12/include/python3.12 -c source/c_gpio.c -o build/temp.macosx-10.9-universal2-cpython-312/source/c_gpio.o
      source/c_gpio.c:170:9: warning: cast to smaller integer type 'uint32_t' (aka 'unsigned int') from 'uint8_t *' (aka 'unsigned char *') [-Wpointer-to-int-cast]
          if ((uint32_t)gpio_mem % PAGE_SIZE)
              ^~~~~~~~~~~~~~~~~~
      source/c_gpio.c:171:34: warning: cast to smaller integer type 'uint32_t' (aka 'unsigned int') from 'uint8_t *' (aka 'unsigned char *') [-Wpointer-to-int-cast]
              gpio_mem += PAGE_SIZE - ((uint32_t)gpio_mem % PAGE_SIZE);
                                       ^~~~~~~~~~~~~~~~~~
      2 warnings generated.
      source/c_gpio.c:170:9: warning: cast to smaller integer type 'uint32_t' (aka 'unsigned int') from 'uint8_t *' (aka 'unsigned char *') [-Wpointer-to-int-cast]
          if ((uint32_t)gpio_mem % PAGE_SIZE)
              ^~~~~~~~~~~~~~~~~~
      source/c_gpio.c:171:34: warning: cast to smaller integer type 'uint32_t' (aka 'unsigned int') from 'uint8_t *' (aka 'unsigned char *') [-Wpointer-to-int-cast]
              gpio_mem += PAGE_SIZE - ((uint32_t)gpio_mem % PAGE_SIZE);
                                       ^~~~~~~~~~~~~~~~~~
      2 warnings generated.
      clang -fno-strict-overflow -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -O3 -Wall -arch arm64 -arch x86_64 -g -I/Library/Frameworks/Python.framework/Versions/3.12/include/python3.12 -c source/common.c -o build/temp.macosx-10.9-universal2-cpython-312/source/common.o
      clang -fno-strict-overflow -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -O3 -Wall -arch arm64 -arch x86_64 -g -I/Library/Frameworks/Python.framework/Versions/3.12/include/python3.12 -c source/constants.c -o build/temp.macosx-10.9-universal2-cpython-312/source/constants.o
      clang -fno-strict-overflow -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -O3 -Wall -arch arm64 -arch x86_64 -g -I/Library/Frameworks/Python.framework/Versions/3.12/include/python3.12 -c source/cpuinfo.c -o build/temp.macosx-10.9-universal2-cpython-312/source/cpuinfo.o
      clang -fno-strict-overflow -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -O3 -Wall -arch arm64 -arch x86_64 -g -I/Library/Frameworks/Python.framework/Versions/3.12/include/python3.12 -c source/event_gpio.c -o build/temp.macosx-10.9-universal2-cpython-312/source/event_gpio.o
      source/event_gpio.c:24:10: fatal error: 'sys/epoll.h' file not found
      #include <sys/epoll.h>
               ^~~~~~~~~~~~~
      1 error generated.
      error: command '/usr/bin/clang' failed with exit code 1
      [end of output]

  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for RPi.GPIO
  Running setup.py clean for RPi.GPIO
Failed to build RPi.GPIO
ERROR: Could not build wheels for RPi.GPIO, which is required to install pyproject.toml-based projects

[notice] A new release of pip is available: 24.0 -> 24.1.1
[notice] To update, run: pip3 install --upgrade pip
%

Discussion for Home page

ChrisMartu — Sun, 08 Oct 2023 18:40:45 -0000

Thank you Emmanuel

Discussion for Home page

Kobra — Sun, 08 Oct 2023 18:02:44 -0000

I just get that this cant be installed on my windows system even thought I just want to have it install so I can do coding on my windows system and known that it will work for my PI systems

Discussion for Home page

FredSteel — Wed, 02 Jun 2021 10:27:47 -0000

Well, thats really nice!

Discussion for Home page

Emmanuel ANDRE — Mon, 01 Feb 2021 13:58:55 -0000

Not sure if it helps but you can try this (non interactive) :
python -c 'import RPi.GPIO as GPIO; print(dir(GPIO))'

You will get a list of functions :
['BCM', 'BOARD', 'BOTH', 'FALLING', 'HARD_PWM', 'HIGH', 'I2C', 'IN', 'LOW', 'OUT', 'PUD_DOWN', 'PUD_OFF', 'PUD_UP', 'PWM', 'RISING', 'RPI_INFO', 'RPI_REVISION', 'SERIAL', 'SPI', 'UNKNOWN', 'VERSION', 'builtins', 'cached', 'doc', 'file', 'loader', 'name', 'package', 'path', 'spec', 'add_event_callback', 'add_event_detect', 'cleanup', 'event_detected', 'getmode', 'gpio_function', 'input', 'output', 'remove_event_detect', 'setmode', 'setup', 'setwarnings', 'wait_for_edge']

you can test the capital ones like this :
python -c 'import RPi.GPIO as GPIO; print(GPIO.VERSION)'

0.7.1a3

Discussion for Home page

Cristian Martuneac — Fri, 01 May 2020 21:40:22 -0000

I am new to Raspberry Pi and python and I am trying to learn and understand the RPi.GPIO module but I was not able to locate a

List of (built-in) Functions

With description and syntax
Can somebody please point me in the right direction

Discussion for Home page

rofingi — Mon, 13 Nov 2017 01:00:12 -0000

your project is ok, review my site : http://ahlinyakuncisurabaya.com/

Discussion for Home page

Janos — Fri, 24 Feb 2017 16:38:09 -0000

Why is it that raspberry pi developrs are completely unable to document what they do?
I would like to see an API description for this widely used library. I'm so ashamed that it seems to be so hard to find one.

Discussion for Home page

Cristian Secară — Sun, 22 Nov 2015 08:42:56 -0000

How can I stop the GPIO thread temporary and then start it back again ? Trying with GPIO.remove_event_detection will simply exit the program (i.e. it breaks the main while loop that waits for events, which is equal to stopping the program).
Is there a value for bouncetime= parameter that disables it ? I want to use a constant parameter at the beginning of code (something like DEBOUNCING=20 and then ... bouncetime=DEBOUNCING). That works fine for valid milliseconds, but if I want to disable it I have to go in middle of code and delete the bouncetime directive.

Thank you,
Cristi

Discussion for Home page

Jerry Davis — Fri, 19 Dec 2014 16:10:01 -0000

no. they don't have one for the pi. just arduino.

so I adapted their arduino code to use in the pi. all was going well, until this.

I will change the code to do a cleanup for all channels except the one I want to remain low.

Sorry, the doc wasn't too clear on being able to do what you said above. I thought you only got one chance at the call, not several!

Wow, thanks for the input, Ben.
This will help a lot. And I can keep using RPi.GPIO !!!

Jerry