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jlpoole
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Joined: 01 Nov 2005
Posts: 488
Location: Salem, OR
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 Posted: Thu Apr 04, 2024 9:46 pm Post subject: Raspberry Pi's: raspi-gpio - easily installed |
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Raspberry Pi comes with a command line program raspi-gpio which can be very helpful when working with the GPIOs of Pi. The project for this command is hosted at https://github.com/RPi-Distro/raspi-gpio.
I downloaded the zip file instead of using the standard "git clone" since my current Gentoo image is being kept to a minimum to run on a Pi Zero 2 W. I unzipped the archive under /usr/local/src/. I then executed:
| Code: | ./configure
make
make install |
Here's my session showing at the end the status of GPIO 13 and 21.
| Code: | zerofield2 /usr/local/src # cd raspi-gpio-master/
zerofield2 /usr/local/src/raspi-gpio-master # ls
LICENSE Makefile.am Makefile.in README.md aclocal.m4 compile configure configure.ac depcomp install-sh missing raspi-gpio.c
zerofield2 /usr/local/src/raspi-gpio-master # ./configure
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /usr/bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking whether gcc understands -c and -o together... yes
checking whether make supports the include directive... yes (GNU style)
checking dependency style of gcc... gcc3
checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating Makefile
config.status: executing depfiles commands
zerofield2 /usr/local/src/raspi-gpio-master # make
gcc -DPACKAGE_NAME=\"raspi-gpio\" -DPACKAGE_TARNAME=\"raspi-gpio\" -DPACKAGE_VERSION=\"0.2\" -DPACKAGE_STRING=\"raspi-gpio\ 0.2\" -DPACKAGE_BUGREPORT=\"serge@raspberrypi.org\" -DPACKAGE_URL=\"\" -DPACKAGE=\"raspi-gpio\" -DVERSION=\"0.2\" -I. -g -O2 -MT raspi-gpio.o -MD -MP -MF .deps/raspi-gpio.Tpo -c -o raspi-gpio.o raspi-gpio.c
mv -f .deps/raspi-gpio.Tpo .deps/raspi-gpio.Po
gcc -g -O2 -o raspi-gpio raspi-gpio.o
zerofield2 /usr/local/src/raspi-gpio-master # make install
make[1]: Entering directory '/usr/local/src/raspi-gpio-master'
/usr/bin/mkdir -p '/usr/local/bin'
/usr/bin/install -c raspi-gpio '/usr/local/bin'
make[1]: Nothing to be done for 'install-data-am'.
make[1]: Leaving directory '/usr/local/src/raspi-gpio-master'
zerofield2 /usr/local/src/raspi-gpio-master # raspi-gpio get 13
GPIO 13: level=0 func=INPUT pull=DOWN
[ raspi-gpio is deprecated - try `pinctrl` instead ]
zerofield2 /usr/local/src/raspi-gpio-master # raspi-gpio get 21
GPIO 21: level=0 func=INPUT pull=DOWN
zerofield2 /usr/local/src/raspi-gpio-master # |
Reading literature on the Internet about programming with the Pi's GPIO, there may be reference to this utility, so I thought this posting will serve as proof that the utility can be easily built in a Gentoo image. |
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jlpoole
Guru
Joined: 01 Nov 2005
Posts: 488
Location: Salem, OR
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| Posted: Thu Apr 04, 2024 9:51 pm Post subject: CheatSheet for raspi-gpio |
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| Page 7 of John Woolsey's Raspberry Pi Basics Cheatsheet (13 pages) has a section devoted to the raspi-gpio command line utility that is helpful and demonstrates the utility's prowess. |
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