v2.3.1 - 01/05/2021
- SPI
- Fix compilation error and unused variable/parameter warnings when
building under Linux kernel headers without 32-bit SPI mode flags
support.
- Contributors
v2.3.0 - 12/16/2020
- MMIO
- Add advanced open function with device path for use with
alternate memory character devices (e.g.
/dev/gpiomem).
- SPI
- Add getter and setter for 32-bit extra flags.
- Add advanced open function with 32-bit extra flags.
- Build
- Enable unused parameter warning.
- Contributors
v2.2.5 - 11/19/2020
- GPIO
- Add direction checks for improved error reporting to
gpio_write(),
gpio_read_event(), and gpio_poll() for character device GPIOs.
- Improve string handling in
gpio_open() and in getters for
sysfs and character device GPIOs.
- LED
- Improve string handling in
led_open() and led_name().
- Build
- Add default optimization to CFLAGS in Makefile.
- Add debug and release CFLAGS to CMakeLists.txt.
v2.2.4 - 09/11/2020
- Fix future spurious close caused by uncleared handle state after an error
during open in GPIO, I2C, SPI, Serial, and MMIO modules.
v2.2.3 - 09/03/2020
- GPIO
- Disable character device GPIO support when building with older Linux
kernel headers missing line event support in the gpio-cdev ABI.
- SPI
- Fix formatted bits per word truncation in
spi_tostring().
- Build
- Add test for character device GPIO support in Linux kernel headers to
Makefile.
- Contributors
v2.2.2 - 07/24/2020
- GPIO
- Add conditional compilation of character device GPIO support to allow
build under older Linux kernel headers.
- Increase feature test macro version to fix missing definition
warnings.
- Build
- Fix directory paths for pkg-config pc file generation and
installation under CMake.
- Fix COMMIT_ID identification when building within a parent git
repository under CMake.
- Add CMake build option for tests.
- Contributors
v2.2.1 - 05/31/2020
- GPIO
- Add feature test macro for POLLRDNORM flag to fix build with uClibc.
- Fix argument name in prototype for
gpio_set_bias().
- Contributors
v2.2.0 - 05/29/2020
- GPIO
- Add
gpio_poll_multiple() function.
- Add getter for line consumer label.
- Add getters and setters for line bias, line drive, and inverted
properties.
- Add advanced open functions with additional properties for character
device GPIOs.
- Only unexport GPIO in
gpio_close() if exported in
gpio_open_sysfs() for sysfs GPIOs.
- Add retry loop to direction write after export to accommodate delayed
udev permission rule application in
gpio_open_sysfs() for sysfs
GPIOs.
- Improve wording and fix typos in documentation.
- Serial
- Add getters and setters for vmin and vtime termios settings.
- Add support for termios timeout with
serial_read().
- Improve wording in documentation.
- Build
- Add CMake build support.
- Add pkg-config pc file generation.
- Contributors
v2.1.0 - 01/07/2020
- Add LED module.
- Add PWM module.
- Clean up internal string handling in SPI and GPIO modules.
v2.0.1 - 10/08/2019
- Initialize handle state in new functions of all modules.
- Fix performance of blocking read in
serial_read().
- Return error on unexpected empty read in
serial_read(), which may be
caused by a serial port disconnect.
- Improve formatting of
spi_tostring().
- Fix typo in GPIO module documentation.
- Fix cross-compilation support in Makefile to allow override of CC
variable.
v2.0.0 - 09/30/2019
- Add support for character device GPIOs (
gpio-cdev) to the GPIO module.
- Remove support for preserve direction in
gpio_open().
- Remove problematic dummy read with sysfs GPIOs from
gpio_poll().
- Unexport sysfs GPIOs in
gpio_close().
- Migrate to opaque handles with new/free functions in all modules.
- Simplify error codes for MMIO, I2C, and Serial modules.
- Fix typos in GPIO module documentation.
- Update tests with running hints for Raspberry Pi 3.
- Improve cross-compilation support in Makefile.
- Contributors
v1.1.3 - 04/28/2018
- Fix data's most significant bit getting stripped when opening a serial
port with parity enabled in
serial_open_advanced().
- Contributors
v1.1.2 - 04/01/2018
- Add handling for delayed pin directory export on some platforms in
gpio_open().
- Fix supported functions query for 64-bit in
i2c_open().
- Add support for building with C++.
- Contributors
v1.1.1 - 04/25/2017
- Fix blocking
gpio_poll() for some platforms.
- Add library version macros and functions.
- Contributors
v1.1.0 - 09/27/2016
- Add support for preserving pin direction to
gpio_open().
- Fix enabling input parity check in
serial_set_parity().
- Fix enabling hardware flow control in
serial_set_rtscts().
- Include missing header to fix build with musl libc.
- Omit unsupported serial baudrates to fix build on SPARC.
- Contributors
v1.0.3 - 05/25/2015
- Fix portability of serial baud rate set/get with termios-provided baud rate functions.
- Fix unlikely bug in
spi_tostring() formatting.
- Clean up integer argument signedness in serial API.
v1.0.2 - 01/31/2015
- Fix
gpio_supports_interrupts() so it does not return an error if interrupts are not supported.
- Fix
errno preservation in a few error paths, mostly in the open functions.
v1.0.1 - 12/26/2014
- Improve Makefile.
- Fix _BSD_SOURCE compilation warnings.
v1.0.0 - 05/15/2014