Posts by screamnAbdab

screamnAbdab

I've been getting familiar with the device tree. This is all new to me, by the way. I've found a couple examples for adding ir-receiver to the tree.

Here's a simple ir_reciever section from linux/Documentation/devicetree/bindings/media/gpio-ir-receiver.txt - Elixir - Bootlin

Code

ir: ir-receiver {
		compatible = "gpio-ir-receiver";
		gpios = <&gpio0 19 1>;
		linux,rc-map-name = "rc-rc6-mce";
	};

I imagine I could modify this to use pin 18. I do not yet understand the rc-map-name purpose or the full gpios line enough to know if this is the only needed change. I am a bit confused as to why the pin needs to be defined in the device tree. Seems to me that this should be configurable at boot time.

Here's a sample from libreelec patch for arm64 rockchip found at LibreELEC.tv/linux-0006-dts.patch at rockchip · LibreELEC/LibreELEC.tv · GitHub

Code

ir-receiver {
		compatible = "gpio-ir-receiver";
                gpios = <&gpio2 RK_PA2 GPIO_ACTIVE_LOW>;
                linux,rc-map-name = "rc-pine64";
                pinctrl-0 = <&ir_int>;
                pinctrl-names = "default";
		status = "okay";
	};

This sample has many items that are a mystery to me. But I will play around with this and see what I can learn. Any further info anyone could provide to help me understand all of this and make successful changes for the tinkerboard would be greatly appreciated.

Thanks!

screamnAbdab

Thanks for the tip. I added dtoverlay=gpio-ir to /flash/config.txt as per the documentation

Unfortunately, I am getting no devices found from ir-keytable

LibreELEC:~/.config # ir-keytable

No devices found

Any help greatly appreciated.

Thanks again.

screamnAbdab

I would like to enable Tinkerboard lirc with home brew gpio receiver and I really dont understand the full picture of what needs to be done.

Can I use the lirc_rpi driver? Or can that driver be modified to work? If so, how would I go about getting that driver enabled in the kernel? Or am I on the wrong track?

Thanks!

screamnAbdab · Tinker Board C GPIO erro screamnAbdab February 24, 2018 at 10:12 PM

no luck yet but I need to back out a bit and get a better understanding of how to enable lirc with homebrew gpio. Not sure if I am heading down the right track. Thanks thought for the suggestion and I imagine I may be coming back to this soon.

screamnAbdab · Tinker Board C GPIO erro screamnAbdab February 23, 2018 at 11:01 PM

I am attempting to include the TinkerBoard C GPIO lib into the rockchip branch build. I've got it building/installing, but when I execute the command 'gpio' from the command line on the kodi server, I always get the following error, regardless of command line arguments:

$LibreELEC:/# gpio readall

/usr/bin/gpio: line 1: syntax error: unexpected ")"

I have attached my package.mk file. Any guidance would be greatly appreciated.

Thanks!

package.mk.txt

screamnAbdab

Built successfully. Thank you vpeter!

screamnAbdab

Thanks for helping. Got a bit farther. I am now getting the following error on build:

gcc: warning: '-mcpu=' is deprecated; use '-mtune=' or '-march=' instead

/usr/bin/ld.gold: fatal error: build/temp.linux-x86_64-2.7/source/py_gpio.o: unsupported ELF machine number 40

collect2: error: ld returned 1 exit status

error: command '/home/ben/http://LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/bin/host-gcc' failed with exit status 1

I have attached the full output if needed.

Thanks again!gpio_lib_python-build.txt

screamnAbdab

I am trying to build and include the TinkerBoard python gpio library in a custom LIbreElec build.

Cloned rockchip branch and built it successfully in Ubuntu VM. Now I have created the following package.mk in /projects/Rockchip/packages/gpio_lib_python/ directory.

Code

PKG_NAME="gpio_lib_python"
PKG_VERSION="0.1"
#PKG_SHA256="953be622e88323c6f43fad61ffd05bebe73b9fd9863a46d68b052d2aa7d71ce2"
PKG_ARCH="arm"
PKG_LICENSE="MIT"
PKG_SITE="https://github.com/TinkerBoard/gpio_lib_python"
PKG_URL="https://github.com/TinkerBoard/gpio_lib_python/archive/sbc/tinkerboard/python.zip"
PKG_SOURCE_DIR="gpio_lib_python-sbc-tinkerboard-python"
PKG_DEPENDS_TARGET="toolchain Python2 distutilscross:host"
#PKG_DEPENDS_TARGET="toolchain Python2"
PKG_SECTION="python/system"
PKG_SHORTDESC="TinkerBoard python gpio library"
PKG_LONGDESC="TinkerBoard python gpio library"
PKG_TOOLCHAIN="manual"

pre_make_target() {
  #strip_lto
  export PYTHONXCPREFIX="$SYSROOT_PREFIX/usr"
}

make_target() {
  #python setup.py build --cross-compile
   python setup.py build --verbose
}

makeinstall_target() {
  python setup.py install --verbose --root=$INSTALL --prefix=/usr
  #python setup_RPi.py install --root=$INSTALL --prefix=/usr
}

post_makeinstall_target() {
  find $INSTALL/usr/lib -name "*.py" -exec rm -rf "{}" ";"
  rm -rf $INSTALL/usr/lib/python*/site-packages/*/tests
}

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I get the following error when executing:

$ PROJECT=Rockchip DEVICE=TinkerBoard ARCH=arm scripts/build gpio_lib_python

Code

BUILD    gpio_lib_python (target)                                                                                                                                                
      TOOLCHAIN    manual
running build
running build_py
running build_ext
building 'ASUS.GPIO' extension
/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/bin/armv7ve-libreelec-linux-gnueabi-gcc -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -march=armv7ve -mabi=aapcs-linux -Wno-psabi -Wa,-mno-warn-deprecated -mcpu=cortex-a17 -mfloat-abi=hard -mfpu=neon-vfpv4 -fomit-frame-pointer -Wall -pipe -Os -flto -ffat-lto-objects -fPIC -I/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/armv7ve-libreelec-linux-gnueabi/sysroot/usr/include/python2.7 -c source/py_gpio.c -o build/temp.linux-x86_64-2.7/source/py_gpio.o
source/py_gpio.c: In function 'py_event_detected':
source/py_gpio.c:888:3: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
   Py_RETURN_TRUE;
   ^~~~~~~~~~~~~~
source/py_gpio.c:890:3: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
   Py_RETURN_FALSE;
   ^~~~~~~~~~~~~~~
source/py_gpio.c: In function 'initGPIO':
source/py_gpio.c:2056:2: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
  Py_INCREF(&PWMType);
  ^~~~~~~~~
/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/bin/armv7ve-libreelec-linux-gnueabi-gcc -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -march=armv7ve -mabi=aapcs-linux -Wno-psabi -Wa,-mno-warn-deprecated -mcpu=cortex-a17 -mfloat-abi=hard -mfpu=neon-vfpv4 -fomit-frame-pointer -Wall -pipe -Os -flto -ffat-lto-objects -fPIC -I/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/armv7ve-libreelec-linux-gnueabi/sysroot/usr/include/python2.7 -c source/c_gpio.c -o build/temp.linux-x86_64-2.7/source/c_gpio.o
/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/bin/armv7ve-libreelec-linux-gnueabi-gcc -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -march=armv7ve -mabi=aapcs-linux -Wno-psabi -Wa,-mno-warn-deprecated -mcpu=cortex-a17 -mfloat-abi=hard -mfpu=neon-vfpv4 -fomit-frame-pointer -Wall -pipe -Os -flto -ffat-lto-objects -fPIC -I/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/armv7ve-libreelec-linux-gnueabi/sysroot/usr/include/python2.7 -c source/cpuinfo.c -o build/temp.linux-x86_64-2.7/source/cpuinfo.o
/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/bin/armv7ve-libreelec-linux-gnueabi-gcc -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -march=armv7ve -mabi=aapcs-linux -Wno-psabi -Wa,-mno-warn-deprecated -mcpu=cortex-a17 -mfloat-abi=hard -mfpu=neon-vfpv4 -fomit-frame-pointer -Wall -pipe -Os -flto -ffat-lto-objects -fPIC -I/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/armv7ve-libreelec-linux-gnueabi/sysroot/usr/include/python2.7 -c source/event_gpio.c -o build/temp.linux-x86_64-2.7/source/event_gpio.o
/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/bin/armv7ve-libreelec-linux-gnueabi-gcc -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -march=armv7ve -mabi=aapcs-linux -Wno-psabi -Wa,-mno-warn-deprecated -mcpu=cortex-a17 -mfloat-abi=hard -mfpu=neon-vfpv4 -fomit-frame-pointer -Wall -pipe -Os -flto -ffat-lto-objects -fPIC -I/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/armv7ve-libreelec-linux-gnueabi/sysroot/usr/include/python2.7 -c source/soft_pwm.c -o build/temp.linux-x86_64-2.7/source/soft_pwm.o
/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/bin/armv7ve-libreelec-linux-gnueabi-gcc -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -march=armv7ve -mabi=aapcs-linux -Wno-psabi -Wa,-mno-warn-deprecated -mcpu=cortex-a17 -mfloat-abi=hard -mfpu=neon-vfpv4 -fomit-frame-pointer -Wall -pipe -Os -flto -ffat-lto-objects -fPIC -I/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/armv7ve-libreelec-linux-gnueabi/sysroot/usr/include/python2.7 -c source/py_pwm.c -o build/temp.linux-x86_64-2.7/source/py_pwm.o
/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/bin/armv7ve-libreelec-linux-gnueabi-gcc -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -march=armv7ve -mabi=aapcs-linux -Wno-psabi -Wa,-mno-warn-deprecated -mcpu=cortex-a17 -mfloat-abi=hard -mfpu=neon-vfpv4 -fomit-frame-pointer -Wall -pipe -Os -flto -ffat-lto-objects -fPIC -I/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/armv7ve-libreelec-linux-gnueabi/sysroot/usr/include/python2.7 -c source/common.c -o build/temp.linux-x86_64-2.7/source/common.o
/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/bin/armv7ve-libreelec-linux-gnueabi-gcc -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -march=armv7ve -mabi=aapcs-linux -Wno-psabi -Wa,-mno-warn-deprecated -mcpu=cortex-a17 -mfloat-abi=hard -mfpu=neon-vfpv4 -fomit-frame-pointer -Wall -pipe -Os -flto -ffat-lto-objects -fPIC -I/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/armv7ve-libreelec-linux-gnueabi/sysroot/usr/include/python2.7 -c source/constants.c -o build/temp.linux-x86_64-2.7/source/constants.o
/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/bin/armv7ve-libreelec-linux-gnueabi-gcc -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -march=armv7ve -mabi=aapcs-linux -Wno-psabi -Wa,-mno-warn-deprecated -mcpu=cortex-a17 -mfloat-abi=hard -mfpu=neon-vfpv4 -fomit-frame-pointer -Wall -pipe -Os -flto -ffat-lto-objects -fPIC -I/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/armv7ve-libreelec-linux-gnueabi/sysroot/usr/include/python2.7 -c source/wiringTB.c -o build/temp.linux-x86_64-2.7/source/wiringTB.o
/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/bin/host-gcc -pthread -shared -Wl,-rpath,/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/lib -L/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/lib -march=armv7ve -mtune=cortex-a17 -Wl,--as-needed -fuse-ld=gold -fuse-linker-plugin -flto -march=armv7ve -mabi=aapcs-linux -Wno-psabi -Wa,-mno-warn-deprecated -mcpu=cortex-a17 -mfloat-abi=hard -mfpu=neon-vfpv4 -fomit-frame-pointer -Wall -pipe -Os -flto -ffat-lto-objects build/temp.linux-x86_64-2.7/source/py_gpio.o build/temp.linux-x86_64-2.7/source/c_gpio.o build/temp.linux-x86_64-2.7/source/cpuinfo.o build/temp.linux-x86_64-2.7/source/event_gpio.o build/temp.linux-x86_64-2.7/source/soft_pwm.o build/temp.linux-x86_64-2.7/source/py_pwm.o build/temp.linux-x86_64-2.7/source/common.o build/temp.linux-x86_64-2.7/source/constants.o build/temp.linux-x86_64-2.7/source/wiringTB.o -L/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/armv7ve-libreelec-linux-gnueabi/sysroot/usr/lib -lpython2.7 -o build/lib.linux-x86_64-2.7/ASUS/GPIO.so
gcc: error: unrecognized argument in option '-mabi=aapcs-linux'
gcc: note: valid arguments to '-mabi=' are: ms sysv
gcc: warning: '-mcpu=' is deprecated; use '-mtune=' or '-march=' instead
gcc: error: unrecognized command line option '-mfloat-abi=hard'
gcc: error: unrecognized command line option '-mfpu=neon-vfpv4'
error: command '/home/ben/LibreELEC.tv/build.LibreELEC-TinkerBoard.arm-9.0-devel/toolchain/bin/host-gcc' failed with exit status 1

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Any help would be greatly appreciated. Note that I have no idea what I'm doing. Would like to get gpio working on TinkerBoard so that I can use the gpio pins for IR remote control. (I know I could probably get some USB solution but I'm interested in getting this working using GPIO).

Thanks.

Posts by screamnAbdab

Tinkerboard lirc with homebrew gpio receiever

Tinkerboard lirc with homebrew gpio receiever

Tinkerboard lirc with homebrew gpio receiever

Tinker Board C GPIO erro

Tinker Board C GPIO erro

Tinkerboard Python GPIO package build error

Tinkerboard Python GPIO package build error

Tinkerboard Python GPIO package build error