This commit adds documentation for the hrtimer module, including its
design overview and intended use cases.
Signed-off-by: Chengdong Wang <wangchengdong@lixiang.com>
Enable up_alarm_start and up_timer_start by default so they can be used
by both the tickless scheduler and the high-resolution timer subsystem.
Signed-off-by: Chengdong Wang <wangchengdong@lixiang.com>
NuttX provides the wdog module to implement timers for the scheduler.
While it is lightweight and efficient, wdog only supports tick-level timers,
typically in milliseconds. Although the tick duration can be configured,
setting it to microsecond or nanosecond resolution is not practical.
Doing so may cause an interrupt storm, where the CPU is constantly
occupied handling tick interrupts.
To address this limitation, a new hrtimer module is introduced.
It coexists with the wdog module, providing both tick-level timers
for wdog and high-resolution timers (nanosecond-level) directly to users.
Signed-off-by: Chengdong Wang <wangchengdong@lixiang.com>
TCP_CORK and TCP_NODELAY behave almost exactly the opposite,
so first provide simple support for TCP_CORK.
Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
The lines will end with \n to prevent atoi('\n') from always being 0. It is recommended to check the first byte directly.
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
/home/ajh/work/vela_system/nuttx/include/arch/syscall.h:181: Error: operand type mismatch for `movq'
`rax`: Used in 64-bit mode, suitable for storing 64 bits of data.
`eax`: In 64-bit mode, typically used for operating on 32-bit data. When writing to `eax`, the high 32 bits of `rax` are automatically cleared to zero.
`nbr` is an unsigned int, is 32-bit.
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
When using usrsock to pass the network interface name, omitting "\0" will cause the host to parse extra characters. therefore, the tail section should be inspected during device binding.
Signed-off-by: zhangshuai39 <zhangshuai39@xiaomi.com>
In order to reduce code duplication, use the eeprom/spi_xx25xx
driver within mtd/at25ee.
The eeprom/xxx.h includes have been merged into eeprom/eeprom.h, to
provide a common include file like mtd/mtd.h.
Signed-off-by: Antoine Juckler <6445757+ajuckler@users.noreply.github.com>
Changed the DRIVERS_VIRTIO_INPUT dependencies from 'depends on' to 'select'
for INPUT_TOUCHSCREEN, INPUT_KEYBOARD, and INPUT_MOUSE options. This ensures
that when DRIVERS_VIRTIO_INPUT is enabled, all required input subsystems are
automatically selected, fixing the issue where mouse device nodes were not
being created properly.
Signed-off-by: rongyichang <rongyichang@xiaomi.com>
This script downloads all NuttX RTOS and Application snapshot packages
from the upstream git repository based on the provided git tags list.
These are NOT official release packages as checkum will differ.
When launched from the local NuttX git repository clone the script will
obtain all available tags to be downloaded, otherwise list of tags needs
to be provided manually (or when just selected tag is required).
This script uses ``wget`` underneath, make sure this tool is installed.
Fetch log file is created with a timestamp in name next to the packages.
Having all tags packaged is important for changes comparison
between specific versions, testing a specific version, compatibility
checks, searching for a feature introduction timeline, etc.
Usage: `./nxtagspkgsfetch.sh [download_path] [tags_list_space_separated]`
You can provide optional download path (default `../../nuttx-packages`)
and tags list to get packages for (default all tags from local git clone).
When providing tags you also need to provide download path.
Documentation update contains new tool description (above).
Signed-off-by: Tomasz 'CeDeROM' CEDRO <tomek@cedro.info>
In rare case, the round-nearest behavior in the clkcnt_best_multshift
may result in converted tv_nsec > NSEC_PER_SEC. This commit fixed the
issue.
Signed-off-by: ouyangxiangzhen <ouyangxiangzhen@xiaomi.com>
Previously only up to 31 PIO instructions were accepted.
But the hardware allowed 32 instructions.
Now we accept 32 instructions.
See the corresponding commit in the pico-sdk repository:
6f7dc67791
Signed-off-by: Lars Kruse <devel@sumpfralle.de>
When the setinterface interface is called, it indicates that the underlying
USB link has been successfully established. At this point, the status of the
network card needs to be updated to RUNNING by calling the netdev_carrier_on
interface. It is similar to the logic after a Wi-Fi network card is
connected to a hotspot. Otherwise, an incorrect network card status may
cause packets to fail to be successfully sent.
Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
Move mutex lock before checking flist to prevent race condition where
events could be lost when occurring simultaneously with service opening.
Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
If there is data in readahead, it needs to be released; otherwise,
it will cause the leakage of IOB resources
Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
when i is zero and file_get is failed, num is -1,
it's uint32_max for nfds.
so remove num and simplify code logic.
Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
Currently the code for strtof, strtod and strtold is in the list
of files to compile unconditionally, but when trying to compile
kernel with toolchain without libm support (LIBM_NONE=y) compilation
fails because code refers math.h
Signed-off-by: Petro Karashchenko <petro.karashchenko@gmail.com>
O_NONBLOCK open mode was broken since
https://github.com/apache/nuttx/pull/17360
MIN() comapres signed value (int) with unsigned value (size_t) which causes
an unexpected return value when ret is negative
Signed-off-by: raiden00pl <raiden00@railab.me>
Upperhalf supports multiple working modes at the same time,
which is specified by NIC when register
Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
Remove the previously supported polling mode. If necessary in the
future, switch to a new solution for implementation.
Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
The secure CPU variant of vexriscv immediately panics after bring up.
However, the linux CPU variant of the vexriscv core does work successfully.
Signed-off-by: Justin Erenkrantz <justin@erenkrantz.com>
The original condition incorrectly used &h->chunk instead of
h->chunk in the calculation whether the object is in the chunk. This
could lead to the wrong behavior as the first branch gave incorrect
result and thus sometimes the entire obstack was freed even though
object was not NULL.
The commit also simplifies the logic, we can use pointer arithmetic
here and just do h->chunk + 1 as it gives the same result as
(FAR char *)h->chunk + sizeof(struct _obstack_chunk). This saves
unnecessary cast and sizeof.
The second branch should be less than or equal, not just less than.
This ensures the object is correctly located in the chunk even after
previous obstack_finish was called.
Signed-off-by: Michal Lenc <michallenc@seznam.cz>
Co-authored-by: Karel Kočí <kkoci@elektroline.cz>
