This makes the retrieval robust against chips being reordered during
boot. The results can be used to fill out mraa_pin_t while initializing
a board.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Add mux_init_reg interface with different mux modes for GPIO, UART, SPI,
I2C, PWM, AIO.
Signed-off-by: Le Jin <le.jin@siemens.com>
Signed-off-by: Ivan Mikhaylov <ivan.mikhaylov@siemens.com>
*cinfos in mraa_get_chip_infos is not set in case of
mraa_get_chip_info_by_name failure which happens on access of /dev/gpiochip*
files which leads to memory free by invalid pointer in *cinfos.
As example, it can be easy recreated with non-root run of mraa-gpio:
test@iot2050-debian:~$ mraa-gpio
free(): invalid pointer
Aborted
Signed-off-by: Ivan Mikhaylov <ivan.mikhaylov@siemens.com>
The warning is aiming at external use, not our own one. Silence the
latter by adding an internal service that the deprecated function calls
and use that service in the remaining mraa use cases.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
When a GPIO controlled via sysfs is set again to output mode, the kernel
also sets the value to 0. This can cause spurious output or mux changes,
e.g. when calling "mraa-gpio set <n> 1" for a pin that was already set.
Avoid this by checking the current direction, only writing it when
actually needed.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
This commit introduces mraa_gpio_init_by_name API for initializing
a GPIO by its line name provided by the kernel. This feature depends
on the GPIO chardev support and also the line names present in devicetree
or board files. Accessing GPIO using its line name, removes the dependency
from MRAA specific pin mapping and provides a cleaner way to access GPIOs.
This will solve the issue created by an external gpiochip probing before
the SoC's internal gpio controller and thereby making the MRAA pin mapping
wrong.
Currently, this API only supports initializing a single GPIO at a time.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
For all subplaform pins, save the subplatform index as dev->pin and the
actual platform index as dev->phy_pin.
Example:
pin 515 (subplatform pin 3)
dev->pin = 515
dev->phy_pin = 515 - 512 = 3
In this way, methods which get a mraa_gpio_context have a means
to tell whether the pin is on a subplatform or not.
Signed-off-by: Noel Eck <noel.eck@intel.com>
The chardev feature changed the flow for most GPIO functions but did not take into account existing function hooks correctly.
This fixes the checks and restores subplatform GPIO access.
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
The following APIs are only used for getting the line information from
kernel by opening the gpiochip independently and they fails to close
the file descriptor when done:
1. mraa_get_line_info_by_chip_number()
2. mraa_get_line_info_by_chip_name()
3. mraa_get_line_info_by_chip_label()
This will create issue if these API consumers like mraa_gpio_read_dir(),
mraa_gpio_mode(), mraa_gpio_chardev_dir() gets called in a loop. The
system will run out of file descriptor after some time.
Fix this issue by closing the opened file descriptors before freeing
the cinfo struct.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: malikabhi05 <abhishek.malik@intel.com>
The flag used for checking the kernel owned gpio line is GPIOLINE_FLAG_KERNEL.
Hence use that instead of GPIOLINE_FLAG_IS_OUT.
Flag used for checking the open source gpio line is GPIOLINE_FLAG_OPEN_SOURCE.
Hence use that instead of GPIOHANDLE_REQUEST_OPEN_SOURCE, which should be
only used when requesting lines.
Reported-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: malikabhi05 <abhishek.malik@intel.com>
Remove some _multiple functions and replace with generic function that
does both. Some general cleanup and will move more interrnal mraa
functions to use the _mraa prefix
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This attribute is not part of gpio standard attributes
so it's necessary to implement a custom version of this function
Signed-off-by: Nicola Ponte <nicola.ponte@u-blox.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
Make use of 'active_low' interface in sysfs for configuring input pin
in pull up / pull down mode. C++ binding also has been added.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
Mock platform allows one to use mraa without having any real HW.
This commit makes necessary foundational changes and implements
GPIO functionality as well as adds respective tests.
Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This fixes bugs when USBPLAT or FIRMATA is enabled when a NULL platform is
added or even a platform without ADC
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This is a re-design of commit 0041801. mraa_lang_func_t structure has been
added (similar in design to mraa_adv_func_t) that points to JNI functions
implemented in src/java/mraajni.c. Functions are set by libmraajava.so,
see wrapper entry in src/java/mraajava.i. As gpio.c now uses these
functions, language specific #ifdef code has been removed as JNI code
is only called if functions are defined (i.e. not NULL)
Signed-off-by: Henry Bruce <henry.bruce@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
libmraajava.so was statically linking to mraa object files causing
duplicate mraa platform instances if a UPM Java module was also loaded.
JNI functionality has been moved into src/java/mraajni.c. JVM object is
now set when JVM is loaded; see updates to src/java/mraajava.i.
This was necessary as the JVM object cannot be directly referenced from
mraa as it will not be available when building C/C++ examples.
Signed-off-by: Henry Bruce <henry.bruce@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
- FT4222 GPIO ISR implementation was specific to C/C++ and ignored
language binding support. This is now fixed via adv_func updates.
- GPIO ISR code has been refactored to reduce i2c traffic when using
I/O expanders
- Added support for built-in FT4222 GPIO interrupts
Signed-off-by: Henry Bruce <henry.bruce@intel.com>
Add support for reading the direction of a GPIO
and expose it through mraa_gpio_read_dir.
Signed-off-by: Constantin Musca <constantin.musca@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
mraa_adv_func_t->gpio_init_internal_replace() now has mraa_gpio_context
parameter so that override function can access both physical and logical
pin numbers.
Signed-off-by: Henry Bruce <henry.bruce@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
Add makefile for building libmraa library.
Import glob functionality from the NetBSD project where the glob.c and
glob.h files are released under BSD 3-clause License. Minor changes were
applied in order to make them compile for Android and Brillo.
This patch adds a control pipe used to interrupt the poll() function
as an alternative to pthread cancellation API.
Change-Id: Id719da4c839acbd320b0cc0e0113c2a5239c8029
Signed-off-by: Mihai Serban <mihai.serban@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This further enhances fix introduced by commit 0836067
by adding Python 3 support and correcting Python version
hex string used in compiler directives.
Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
Previous commit to add debugging cause python3 builds to fail because
PyString_AsString is not available on python3 since all strings are uft8
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
Also modified ISR handler logic to account for the flag.
This fixes isrExit() deadlock in Python interactive mode
and prevents a more generic problem of a spurious ISR call
after mraa_gpio_isr_exit() is run.
Closes#268.
Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
