On 11/3/2023 4:02 PM, Robert Middleton wrote:
Hi,
I am working on a project that will need to be able to read/write the
ID page of an EEPROM(currently a M95M02 SPI device from ST). From the
code that I have seen, it seems that this chip is already supported,
but there is no code to read/write
On 10/26/2023 4:48 PM, Nathan Hartman wrote:
I wonder if this hasn't been solved already in some industry-accepted
manner. For example (not saying this is the solution, just thinking out
loud) there is a redundancy mechanism that makes two network interfaces
look like one, with automatic failove
On 10/25/2023 10:41 PM, Zhe Weng 翁喆 wrote:
But I do have another idea:
Maybe you can try to register two network devices even if you only have a
single GMAC, just dup all the rx packets to both interfaces, and let all tx
packets go out. Since the IP addresses are different on each interface,
On 10/25/2023 9:27 AM, Matthias Roosz wrote:
Hi all,
forgive my ignorance, I’ve just started diving into networking topics
(including handling connections via Berkeley sockets). My final goal is to
make my device reachable via two separate IP addresses with a single PHY.
Once there are two IP
On 10/25/2023 8:48 AM, Gregory Nutt wrote:
On 10/25/2023 8:18 AM, Alan C. Assis wrote:
On 10/25/23, Nathan Hartman wrote:
On Wed, Oct 25, 2023 at 5:16 AM Ville Juven wrote:
Hi all,
I noticed that when spawning a new task/process from a file in
nsh_fileapps, the scheduler is locked prior
On 10/25/2023 8:18 AM, Alan C. Assis wrote:
On 10/25/23, Nathan Hartman wrote:
On Wed, Oct 25, 2023 at 5:16 AM Ville Juven wrote:
Hi all,
I noticed that when spawning a new task/process from a file in
nsh_fileapps, the scheduler is locked prior to calling posix_spawn(),
which
does the file
On 10/14/2023 1:48 AM, guangyuan wang wrote:
Hi
I note that the Nuttx supports POSIX well. And I'd like to check whether I
could use Nuttx core to replace the Linux core in Ubuntu OS.
No, probably not. It depends on what you mean and how much effort you
want to put into it. Remember that y
. Uros was replacing file system tasks with internal
flash tasks so from his point of view, the FLASH based tasks were
internal (or built-in) and not external (on a file system).
On 10/12/2023 3:16 PM, Alan C. Assis wrote:
Hi Greg,
On 10/12/23, Gregory Nutt wrote:
On 10/12/2023 2:18 PM, Alan C
On 10/12/2023 3:26 PM, MIGUEL ALEXANDRE WISINTAINER wrote:
Some idea how to capture the data returned by exec ?
exec does really return any data other than an int status code which
only indicates if the task was correctly started.
If you want some text output, you would have to add instrum
On 10/12/2023 2:18 PM, Alan C. Assis wrote:
The execv on Linux also fails when we can an builtin program, try it:
You are right, but the semantics are really confusing. In Bash,
commands that are included inside of Bash are called built-in commands
and you cannot execute them. We ignore t
On 10/12/2023 2:05 PM, Alan C. Assis wrote:
Ah ok, I tested using the original code with "ls" instead "/bin/ls"
and the result as similar to NuttX: didn't print anything.
That is a different problem; it did not find ls. On linux, use /execvp/
instead of /execv //or //execve/. With execve, y
On 10/12/2023 2:31 PM, MIGUEL ALEXANDRE WISINTAINER wrote:
I can run (execv) i2c from hello 🙂
works!
Now Gustavo can you this TIP to make work the PCA/PCF GPIO extender 🙂
Thanks!
nsh> hello
Executing 1 /bin/i2c
Usage: i2c [arguments]
Where is one of:
There are several
I'm not the right guy to talk about CI,but I believe that every modified
C file is run through Lint. If you have questions, I am sure someone
else can expound.
On 10/10/2023 12:33 PM, Daniel Appiagyei wrote:
Hey,
I was running the [cppcheck](https://cppcheck.sourceforge.io/) static
analysis t
These reports with regard to DEBUGASSERT have been reported before.
DEBUGASSERT is defined in a ccouple of ways. Here is one way:
do \
{ \
if (predict_false(!(f))) \
__assert(__A
On 10/4/2023 8:02 PM, Gustavo Soares wrote:
Hi Greg!
Yes, if I use #include this problem is solved, but
then the code loses the reference to that specific struct causing another error.
And how exactly "the file does not exist"? I can open it and it is at the nuttx
repo, I shared it's link.
Actually, the problem is very simple. This file does not exist.
#include
You probably wanted
#include
The more I look at what you are trying to do, the more confused I get.
There is a file at drivers/ioexpander/pcf8575.h, but you are not
permitted to include that. That contains intern
Why wouldn't the compiler access nuttx/drivers/ioexpander/pcf8575.h?
Access to internal driver files by applications is specifically
forbidden. This is part of the enforcement of the modular design to
assure that people do not do that kind of thing: Applications must
not have access to th
Why wouldn't the compiler access nuttx/drivers/ioexpander/pcf8575.h?
Access to internal driver files by applications is specifically
forbidden. This is part of the enforcement of the modular design to
assure that people do not do that kind of thing: Applications must not
have access to the
On 10/4/2023 7:02 PM, Gustavo Soares wrote:
Why wouldn't the compiler access nuttx/drivers/ioexpander/pcf8575.h?
Access to internal driver files by applications is specifically
forbidden. This is part of the enforcement of the modular design to
assure that people do not do that kind of thing
On 9/21/2023 6:34 AM, Simon Filgis wrote:
When I started with networking, I set the IP via kconfig. I remember that
it was necessary to enter the same IP at two different places. Netlib and
FTP server in my case. Maybe your IP is overwritten by another app? A
buildin app that you use for experime
On 9/21/2023 6:53 AM, Petro Karashchenko wrote:
setting "address.sin_addr.s_addr" + "bind" is kind of a way you can use to
receive requests only from an interface that has a specific IP address.
This is useful if your system has multiple network interfaces and you want
to provide some kind of iso
On 9/21/2023 5:06 AM, Gustavo Soares wrote:
Why is it a different IP? The server is listening to one but this
method returns another one.
You provide almost no information for anyone to really help you.
Where is the server and client? It sounds like you are saying that the
HTTP server is o
On 9/14/2023 8:52 AM, Alan C. Assis wrote:
I think the authors of the driver can release the source code using
two or more licenses.
cd c
We already have an example of it in NuttX: SocketCAN
Since they add the OR license clause it is fine.
The part that bothers me is that I cannot tell which l
On 9/13/2023 11:54 AM, Mike Moretti wrote:
Hi,
I'm trying to create a custom board config for our custom board that
includes an ESP32S3. I'm attempting to include all the pin and
configuration definitions for the board in the defconfig file.
Unfortunately, after running ./tools/configure.sh
On 9/9/2023 9:43 AM, Gustavo Soares wrote:
So I have to create and mount a directory to my HTML file and tranfer it to
this directory? Even if I have the HTML file embedded on compile?
No transfer is necessary. The ROMFS file system can be built into the code.
On 9/9/2023 9:21 AM, Gustavo Soares wrote:
Maybe I don't have to transfer the file to the tmp folder. I think the folder
the app is reading is not the app folder but the root, so it won't find the
file. Is it possible to access the built-in apps folder on NuttX? So I can
make the app to read
*And about rz, do use the same console of shell ? Zmodem*
Yes.
That might be a problem with tat? In the past, NSH used special logic
that to handle the requirements of a COOKED mode terminal: character
echo, CR-LF expansion, etc. These changes were implemented (mostly) in
NSH so that NS
I think GPL code shouldn't be included directly, but I think it is
fair to allow GPL code be downloaded using the building system case
user selected it.
We created this directory specifically to hold forks of GPL code that
can be used with NuttX: https://github.com/NuttX . I am not sure of
On 9/6/2023 5:15 AM, alin.jerpe...@sony.com wrote:
There are known CAN sources that have GPL code and have been documented in the
LICENSE File
All this code is protected under the include GPL code config option and
disabled by default
Is this approach approved or we should completely remove t
On 8/31/2023 3:39 PM, Petro Karashchenko wrote:
Hello,
I'm having an issue with a network based application on NuttX.
I have a HTTP server that is built with the help of the "netlib_server"
interface. When I'm trying to access my server with curl multiple times in
a row I see that there is a g
On 8/27/2023 7:49 PM, Nathan Hartman wrote:
I don't know whether you've had a chance to read [1] yet, but if not, it
might help visualize the two-part structure of device drivers in NuttX. (If
you've already read it, then never mind, and apologies for the noise. :-)
The audio subsystem is di
On 8/27/2023 4:24 PM, Tim Hardisty wrote:
SAMA5D2 specific, I should add.
There is no support for the Class D driver for any SAMA5D2 board in the
source tree.
On 8/27/2023 4:22 PM, Tim Hardisty wrote:
The classD driver DOES register itself as /dev/audio/pcm0, and works correctly
as such with nx_player.
You are mistaken. The Class D driver does not register itself as a
character driver. grep -r register_driver arch/arm/src/sama5/ proves
that is
Also, I don't think the /dev/audio/pcm0 device you are talking about is
what you think it is. It is a character driver but not the Class D
lower half. So, yes it can be opened.
/Caveat: It has been ages since I worked with the audio subsystem so I
might be completely wrong./
/dev/audio/pc
I suppose that the easiest thing of all would be to put the tones in
small PCM files in a built-in ROMFS file system
On 8/27/2023 1:47 PM, Gregory Nutt wrote:
On 8/27/2023 5:41 AM, Tim Hardisty wrote:
Or am I completely missing the point and I just need to use the nxaudio
system!!??
I
On 8/27/2023 5:41 AM, Tim Hardisty wrote:
Or am I completely missing the point and I just need to use the nxaudio
system!!??
I think you have been missing point. You have two options:
1. As you suggest, extend nxaudio to be a source of tone data (just
like audio file data) and uses the
On 8/27/2023 5:25 AM, Tim Hardisty wrote:
Looking a little more at the write function of audio_ops_s it is not used by
any existing driver and is documented to be for device-specific
information...so it is not portable in terms of playing tones by simply writing
PCM data word by word. I get
On 8/27/2023 4:17 AM, Tim Hardisty wrote:
Thanks Gregory. The existing ClassD driver is registered as /dev/audio/pcm0 and is a PCM
device not PWM. It has the "usual" audio ops to configure it,
start/stop/pause/enqueue etc. It is exposed via ioctls so does have a user interface;
that is how b
But I want to play simple audio tones, from a sine look-up table, and
filling a buffer and enqueuing it seems over the top.
If you just want to plane simple audio tones, maybe something
drivers/audio/tone.c is what you need? That is a character driver with
a custom tone interface.
On 8/26/2023 12:18 PM, Tim Hardisty wrote:
This is, I'm sure, more a generic POSIX question than NuttX-specific but I am
still not that familiar with either!
When I wrote the SAMA5D2 ClassD audio driver I followed the methods appropriate for using
"apb" so it works well with nxplayer (for ex
On 8/18/2023 12:14 PM, Philippe Leduc wrote:
Hello,
I am currently in the process of porting NuttX to the i.MX8MP (Cortex-M7) SoC
from NXP. I managed to have a POC that boot and the serial seems to work
properly. However the console seems to behave strangely: I need to configure my
client to h
On 8/17/2023 10:34 AM, Tim Hardisty wrote:
I have concluded that CDC/ACM will NOT play alongside SYSLOG - most
likely on the SAMA5D2 device, or possibly just on my board for some
reason.
Whatever I choose as the SYSLOG output (/dev/ttyS0, ttyS1, ttyFC0 and
ttyFC1 all of which are working fi
So the question - how is version.h being created? Even if this is not
included upstream, I can have it done at least locally, but being still
in starting phase, I need some pointer here...
It is created from .version by tools/mkversion under the control of
tools/Unix.mk. .version is created
I am new to nuttx, and I'm hoping someone could point me in the right direction
regarding SMP and filesystem interactions, specifically writing to the SD card.
Using multiple threads that are writing to separate files, with sdio buffering
enabled, do I need to use mutex to prevent fwrite con
What I've tried to do:
1. Run configure with a similar processor: ./tools/configure.sh -l
nucleo-f4x1re:f401-nsh
2. Change the system type via menuconfig(System Type -> STM32 Chip
Selection, select STM32F405RG)
When you did this your CONFIG_MM_REGIONS settings became wrong (becuase
the ST32F40
So is there a simple way of attaching and ISR to a GPIO from user code?
You need to think like you were using Linux: No interrupt handling in
user code! This needs to go into your board logic. Expecially if you
are customizing the board to some non-off-the-shelf configuration with
additi
On 8/10/2023 4:23 PM, Josh Lange wrote:
First of all, thanks to everyone involved in the NuttX project. We
really appreciate all the work that has gone into keeping this
operating system maintained and functional on a wide variety of hardware.
We have several different NuttX-based projects tha
In the early days, Greg modified buildroot to build a GNU toolchain
specifically for NuttX (include files included). I wanted a toolchain that
used the hard-float ABI for Armv7E-M. I maintained it (unofficially) for some
time submitting patches (up to gcc 8.3, gdb 7.5 IIRC). I’m not sure
Ideally, I’d have configured this from the user application. As they are
embedded within the board startup I’d have thought they would have been
configurable through kconfig.
I assume you are referring to the following in
boards/arm/rp2040/common/src/rp2040_common_bringup.c:
#ifdef CO
Raspberry Pi is a difficult target. It is not Open Hardware, and there
is a bunch of critical closed-source system software. The Broadcom
SOCs are not fully documented.
All true, but there are a few documents floating around like:
https://datasheets.raspberrypi.com/bcm2711/bcm2711-peripheral
Maybe you could that a look in the minnsh PoC, it was running on MCU
with less than 16KB Flash and 8KB RAM. As you can see in the image it
is using less than 2KB RAM:
To get to the minimal size, that configuration also depended on the
ability to disabled file system support (and, in the long
Jokes aside, I thin we need to release 12.2.1 with a fix, what do you
think Alin?
If you decide to do another release, I would think that a 12.2.1 release
should also include #9716. This is a pretty serious problem to be in
release code as well:
https://github.com/apache/nuttx/pull/9716
But it would be possible to create a pre-build SmartFS image using the
FUSE filesystem under Linux, and then include that image as a binary
blob into your application ... you would just have to ensure all the
MTD access and alignment are taken care of.
Your FUSE filesystem has been lost in
There are several examples using a ROMFS file system in apps/ and
nuttx/boards/. There is one at nuttx/boards/sim/sim/sim/src/etctmp with
build logic that generates nuttx/boards/sim/sim/sim/src/etctmp.c.
Normally, you would probably have to mount the filesystem yourself, but
in this case, th
What I am trying to cater for is the inevitable occasion where a
customer does a firmware update that goes wrong and seems to "brick"
the device, as the "app" nor-flash is corrupted and an in-app updater
can't be run.
Back in the day when I was doing set-top boxes we would support updating
On 7/1/2023 10:27 AM, Tim Hardisty wrote:
Lots of work to do a full u-boot replacement, yes. But a basic one
using existing NuttX stuff such as RNDIS, dfu, mtd etc. - for MY board
at least - would not be much work. He said...naively!
You often can't know how deep the water is until you get a l
Its a really nice idea but probably really lots of work :-)
Possibly less then you might think since using NuttX for the bootloader
avoids all hardware driver development (unless you have some special
driver need). You simply write the bootloader app on top of the
existing driver and that
Bottom line: has anyone used any bootloader other than u-boot to allow usb dfu
or RNDIS-type firmware updates, and that easily boot NuttX?
There are a few very tiny, minimal function bootloaders that I have used
with SAMA5's in the past:
./sama5d3x-ek/src/nor_main.c
./sama5d4-ek/src/
On 6/14/2023 9:44 AM, Roberto Bucher wrote:
Hi
We are working with a*Launchpad TMS320F28379D *board and we are
looking if somebody already worked with NuttX on this board.
Thanks in advance
Roberto
There are a couple of older parts that are still supported with TMS320
designations, howeve
On 6/11/2023 11:42 AM, Tim Hardisty wrote:
Where should that be in the (current) documentation? I’ll go and add it as I
didn’t know this.
I am not very familiar with the new documentation. There should be a
document about creating board support and that document should discuss
the content o
On 6/11/2023 11:16 AM, Gregory Nutt wrote:
On 6/11/2023 11:07 AM, Mark Stevens wrote:
Is there any reason for not having the extension?
To me the extension adds information about the file.
The name is actually BIN = nuttx$(EXEEXT) but EXEEXT is not normally
defined.
Different toolchains
On 6/11/2023 11:07 AM, Mark Stevens wrote:
Is there any reason for not having the extension?
To me the extension adds information about the file.
The name is actually BIN = nuttx$(EXEEXT) but EXEEXT is not normally
defined.
Different toolchains generate executable images in different format
On 6/8/2023 6:11 PM, Tomek CEDRO wrote:
On Fri, Jun 9, 2023 at 1:53 AM Tomek CEDRO wrote:
I am working on ESP32 (no FPU) and using Quadrature Encoder for motor
control and range positioning. Current qencoder implementation stores
counted values on int32_t so the maximum and minimum value is on
On 6/7/2023 2:38 PM, Fotis Panagiotopoulos wrote:
This is, ultimately, the problem. You can't wait for one tick. There is
something wrong with the delay that is asking for the single tick delay.
The watchdogs, by design, ask for a single tick delay.
Here it is:
https://github.com/apache/nutt
Later on, up_timer_start() will try to schedule the timer expiration 1 tick
in the future.
This is, ultimately, the problem. You can't wait for one tick. There is
something wrong with the delay that is asking for the single tick delay.
If the single tick delay is valid for some reason, th
The timer peripheral is a counter with a compare/match interrupt,
right? So the match interrupt is not occurring until the much later
than it should? This sounds like a case where the compare register is
being set in the past, that is, the counter has already incremented past
the compare valu
On 6/6/2023 4:46 PM, Alan C. Assis wrote:
Hi Fotis,
On 6/6/23, Fotis Panagiotopoulos wrote:
Hello,
I just noticed the option STM32_TICKLESS_SYSTICK for the STM32.
However, it seems that it does nothing.
After a source code search, this option is not used anywhere.
There is no tickless impl
On 6/6/2023 4:47 PM, Gregory Nutt wrote:
On 6/6/2023 4:31 PM, Nathan Hartman wrote:
On Tue, Jun 6, 2023 at 5:44 PM Fotis Panagiotopoulos
wrote:
Hello,
I just noticed the option STM32_TICKLESS_SYSTICK for the STM32.
However, it seems that it does nothing.
After a source code search, this
On 6/6/2023 4:31 PM, Nathan Hartman wrote:
On Tue, Jun 6, 2023 at 5:44 PM Fotis Panagiotopoulos
wrote:
Hello,
I just noticed the option STM32_TICKLESS_SYSTICK for the STM32.
However, it seems that it does nothing.
After a source code search, this option is not used anywhere.
There is no tic
That would help when tickless mode is used. But what about tickful mode? I
guess the intent of 7312a553b was to avoid wasting processor cycles on busy
waiting, but if tickless isn't being used, perhaps busy waiting is
necessary here? It could choose between the two wait types at compile time
ba
This may be way off base but, have you tried reverting
https://github.com/apache/nuttx/commit/7312a553bbc40f3771c5d53ccded89bed7391f2a
It release the CPU but traded that for potentially quantized large delays
Yes, I would expect the up_udelay to be in error by about about 0.5 uS
(provided t
On 5/25/2023 10:35 AM, Tim Hardisty wrote:
I have an SPI EEPROM device on my board, and use "ee25xx_initialize" to
register it as /dev/at25. That works fine.
But I can't do anything with it.
Sure you can. That is a character device, not an MTD or block driver,
and it should behave like the wh
On 5/23/2023 12:11 PM, Tim Hardisty wrote:
Hi,
This is perhaps more a POSIX/general programming question than NuttX but you
are all, so often, so very helpful :)
A touchscreen peripheral (SAMA5D2 as it happens) delivers X and Y coordinates
scaled 0-4095.
LVGL wants them scaled to the actual
On 5/23/2023 7:32 AM, Nathan Hartman wrote:
On Tue, May 23, 2023 at 8:07 AM Tomek CEDRO wrote:
On Tue, May 23, 2023 at 9:31 AM Sebastien Lorquet wrote:
Hello Tomek,
Whatever is decided, the mere fact of wanting to make a decision on this
point will lead to more split.
either from people that w
On 5/21/2023 8:12 AM, Nathan Hartman wrote:
Recently I added the new docs [1] and [2] to Documentation/guides but
they are not appearing on the website [3].
Does anyone know what I missed?
[1]
https://github.com/apache/nuttx/blob/master/Documentation/guides/zerolatencyinterrupts.rst
[2]
http
On 5/19/2023 12:11 PM, Lwazi Dube wrote:
On Fri, 19 May 2023 at 13:51, Alan C. Assis wrote:
Lwazi, I think Greg summarized it well.
Yes, and Maciej too. Thanks
But we need to get away from statements of fears and marketing
statements to understand the clear, real world impacts.
Such a big change needs good description.. risks.. clear list of
advantages and disadvantages :-)
And if it comes down to switching from one to the other as you suggest,
then it needs a vote to understand the will of the whole community, not
the preference of a few. The whole community wou
On 5/19/2023 10:25 AM, Lwazi Dube wrote:
Alan,
Can you summarize? I have not been following this PR. Is make going away?
Thanks,
-Lwazi
On Fri, 19 May 2023 at 11:47, Alan C. Assis wrote:
Hi Everyone,
While PR #6718 is waiting to get merged, please take a look:
https://makefiletutorial.com
On 5/17/2023 7:21 AM, Gregory Nutt wrote:
On 5/17/2023 4:21 AM, Jukka Laitinen wrote:
Hi,
I just observed the behaviour mentioned in the subject;
I tried just calling in a loop:
"
sem_t sem =SEM_INITIALIZER(0);
int ret;
ret = nxsem_tickwait_uninterruptible(&sem, 1);
On 5/17/2023 4:21 AM, Jukka Laitinen wrote:
Hi,
I just observed the behaviour mentioned in the subject;
I tried just calling in a loop:
"
sem_t sem =SEM_INITIALIZER(0);
int ret;
ret = nxsem_tickwait_uninterruptible(&sem, 1);
"
, and never posting the sem from anywhere. The fu
https://www.amazon.com/MicroC-OS-II-Kernel-CD-ROM/dp/1578201039
Wow, never heard about that book but just looking at the ToC makes me
want to get one :-)
The original uC/OS I book published in 1992 was the one that really
established uC/OS and led to Micrium. I think that is this book:
h
On 5/14/23, Brennan Ashton wrote:
Before I do more work to wire this up, please let me know if this pdf
I have attached here seems like a reasonable start for people
https://github.com/apache/nuttx/issues/9095#issuecomment-1547008998
It is basically the same content on the website, so missin
On 5/14/2023 12:45 PM, Tomek CEDRO wrote:
Hello world :-)
I have updated the www with social media section in the Community page :-)
Also I have humbly added myself to the contributors list. I was not
sure what *PMC to use, so I sipmly used PMC.
As project has graduated, I can update all PMC m
struct efuse_param
Also .. does not follow the naming standard for structures. The coding
standard requires that all structure names end with _s so, if this is
needed, it must be efuse_param_s
If it is not needed, then it should be removed.
> 1. Daemon / Service:
>
> 1.1. I would like to have application running as daemon in the
> background all the time. Is this possible?
NuttX supports the daemon() API.
https://man7.org/linux/man-pages/man3/daemon.3.html
Lots of examples to look at:
$ grep -ri daemon apps | wc -l
2384
On 4/27/2023 3:50 AM, Ville Juven wrote:
Hi,
I agree totally that the contents of the stack allocated wait object
(whatever) do not need validation, and the user of course cannot
access / destroy the contents.
What I did not understand before inspecting the Linux kernel code, is
how the wai
I think Xiang refers to how Linux does it. It simply creates a new
"waitobj" variable into the kernel stack by declaring it inside the
sem_wait()-equivalent function. The wait object is created into the
kernel stack, ...
Yep, I was not thinking of allocating as a local variable. So I had a
hore unlocks, the kernel parts can be freed.
This should be completely regression free for FLAT/PROTECTED, which
is
very
important for me because I don't want to be responsible for breaking
such a
fundamental OS API for current users ;)
Br,
Ville
On Wed, Apr 26, 2023 at 5:26 PM Gregory Nutt
On 4/26/2023 12:18 PM, Ville Juven wrote:
How to protect the integrity of the stack allocated structure is still a
bit open but one option is to use kheap as well. Semantics to be figured
out, the solution should be feasible.
My idea was to put the handle to this data into the user semaphore, how
On 4/26/2023 4:10 AM, Ville JUven wrote:
I know it might be too late to fix the usage of SEM_INITIALIZER macro
from user space, as many out-of-tree targets might depend on this as
well, but I'd still like to open a discussion about the possibility of
removing it from user space.
Why remove it
I have a question about using mutex_t / struct mutex_s inside
libs/libc. The mutex_t definition is kernel internal but some modules
inside the libs folder use it directly. My question is, is this
intentional ? I don't think such modules should be using mutex_t.
...
My question ? Should the
On 4/25/2023 12:32 PM, Tim Hardisty wrote:
The SAMA5 support has no driver for the secure fuse peripheral. Kconfig allows
you to “enable” it but there’s no underlying code.
Before I go ahead and create a character driver for this, is the omission for a
“good” reason?
The driver would handle t
On 4/25/2023 11:38 AM, Nathan Hartman wrote:
> I like the idea of keeping documentation in sync with the code(as much as
> possible given our volunteer-based project).
I wouldn't make a plan that depends on that. Engineers are notoriously
bad at maintaining documentation. And international pr
Thanks Alan! This is why I was a bit surprised why the documentation
is not direct part of the source code (i.e. documentation of the
file/module/function right in that file/module/function). Kivy does
that, it helps understanding the code, allows easy online/pdf
documentation out of it, and mo
Yes, using the Documentation/ as base to create a book is a good idea,
but it should focus on "OS Components" and "API Reference".
I don't think that the documentation should be limited to simple HowTo
and WhatIs documentation. I think it should have some technical meat
too! Like explanat
Sorry, I know I am way to anal retentive:
In the past, documentation was partly in README files in various
directories in the repo, partly on the NuttX website which was running on
MediaWiki.
It was actually DocuWiki and was the landing page for the old nuttx.org
website (not that it matters)
When I was originally developing the kernel mode, I wrote this:
https://cwiki.apache.org/confluence/display/NUTTX/Memory+Configurations
That was mostly my notes of what I had worked on and my roadmap that was
guiding me through the kernel mode development. I burned out on that
before finishin
>>> I was actually quite surprised that Nuttx applications are still
partially
>>> linked with a protected build and that all sections overlap (start
at 0)in
>>> the elf file. I had expected the application would be fully linked to
>>> virtual addresses as per linux and another RTOS I used pre
On 4/24/2023 7:27 PM, Andrew Dennison wrote:
Are there any examples of a gdb setup to debug a userspace process? One key
issue is to setup the section offsets to match the final application
location once it has been loaded.
You don't describe your build, so I only give you a general answer.
Including the doubling of characters and momentary display of some
characters which seem to change rapidly?
That probably comes from NSH. I think it still sends an escape sequence
to clear to the end of the line. So any additional garbage at the end
after the first four characters would o
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