nuttx | NuttX with Project Ara bridge ASIC and board support

by projectara C Version: Current License: No License

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kandi X-RAY | nuttx Summary

nuttx is a C library typically used in Internet of Things (IoT) applications. nuttx has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

NuttX with Project Ara bridge ASIC and board support

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Quality

Security

License

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Support

nuttx has a low active ecosystem.

It has 29 star(s) with 40 fork(s). There are 57 watchers for this library.

It had no major release in the last 6 months.

nuttx has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of nuttx is current.

Quality

nuttx has no bugs reported.

Security

nuttx has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

nuttx does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

nuttx releases are not available. You will need to build from source code and install.

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nuttx Key Features

No Key Features are available at this moment for nuttx.

nuttx Examples and Code Snippets

No Code Snippets are available at this moment for nuttx.

Community Discussions

Trending Discussions on nuttx

Sony Spresense SDK -VS code Extension - Invalid argument # include on fresh Build of HelloWorld

Nuttx heap allocation failed: heap-size is zero

NuttX: How to add PWM support for STM32F7 boards? (stm32_pwm.h not found)

Nuttx: why is polling required for work queue threads?

Connect to Vehicle Using Telemetry on Linux

QUESTION

Sony Spresense SDK -VS code Extension - Invalid argument # include on fresh Build of HelloWorld

Asked 2020-Jul-01 at 09:51

Well as life tends to be frustrating, i have found yet another interesting bug in the great conglomerate of which makes up VS-Code and it's list of 'useful' extensions...

Back Story:

To begin - i purchased a new Sony - Spresense Main Board and Expansion Board for development and testing purposes. Everything arrived in great shape with the highest quality of product and packaging.

The First Step:

As with every micro-controller purchased, I always test every aspect offered with the device when it comes to programming. I used the well known Arduino ide to throw a few basic examples on the Spresense main board. They all flashed correctly, worked properly and i was happy to see the device works!

The Problem:

At this point i had gotten my fill of using the arduino ide... I decided to download the vscode extension , following the vscode setup guide provided by Sony Spresense Web Site.

I noted the "setup guide" was using out of date versions from the most up to date available versions.
I tried using the both older and most recent version with same issues.
Every step was followed perfectly and matches the setup guide to the T.
VsCode installs and loads the extension, workspace and workspace configuration properly.
I also followed the instruction for installing the MSYS2 on windows and verified it was working correctly

The All Stop Error:

Excited to see my first hello world printf statment cruise thru the serial terminal i began the project spresense application build.

The Makefile proceeds thru the steps checking directories and performing required duties.

Suddenly towards the end of the make build i get --- BUILD ERROR

make[3]: Entering directory '/c/msys64/home/Anon/spresense/sdk/apps/builtin' In file included from C:/msys64/home/Anon/spresense/nuttx/include/sys/types.h:47:0, from C:/msys64/home/Anon/spresense/nuttx/include/nuttx/lib/builtin.h:51, from ./builtin_list.c:44: C:/msys64/home/Anon/spresense/nuttx/include/stdint.h:49:12: fatal error: C:/msys64/home/Anon/spresense/nuttx/include/arch/types.h: Invalid argument

include

compilation terminated. ERROR: arm-none-eabi-gcc failed: 1 command: arm-none-eabi-gcc -M -fno-builtin -mabi=aapcs -ffunction-sections -fdata-sections -Wall -Wstrict-prototypes -Wshadow -Wundef -g -Os -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer -mcpu=cortex-m4 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=hard -I. -isystem /c/msys64/home/Anon/spresense/nuttx/include -isystem /c/msys64/home/Anon/spresense/nuttx/../sdk/include -D__KERNEL__ -pipe -gdwarf-3 -I /c/msys64/home/Anon/spresense/sdk/apps/include ./builtin_list.c make[3]: *** [/c/msys64/home/Anon/spresense/sdk/apps/Application.mk:209: .depend] Error 1 make[3]: Leaving directory '/c/msys64/home/Anon/spresense/sdk/apps/builtin'

The Make proceeds to throw 10 or so more errors of the same variety, all invalid argument..

I feel like this should be working... I mean with all the fan fair behind this product line one would think the basic setup guide and IDE should work out of the box...

I think i am figuring out why this product line is failing miserably in the public realm...

The Most Basic of Code

...

ANSWER

Answered 2020-Jun-30 at 15:53

I did a same steps with my spresense board, lastweek. But I did not face this problem...

And I interested of this. So, if you provide more information, I will investigate it!

Does the file C：/msys64/home/Anon/spresense/nuttx/include/arch/types.h exist? And can you open the file?
What did you choice in SDK Config? (Nothing as default?) If you OK to provide a "sdk.config", could you share it in this page?
Did you use your spresense sdk (/c/msys64/home/Anon/spresense) for another things?(Build check, or configuration or etc...)
What is your MSYS2 version?

And I think, you might can recover your environment with next command, could you try it?

Source https://stackoverflow.com/questions/62633745

QUESTION

Nuttx heap allocation failed: heap-size is zero

Asked 2019-Jun-10 at 14:02

I'd like to allocate some memory on mm_heap, but its size is zero: debug mm_heap

This causes the memory allocation to fail. How can I debug this problem?

For reference, I'm using Nuttx on a STM32F765.

...

ANSWER

Answered 2019-Jun-09 at 13:57

The heap size is zero because nothing was ever added to the heap. You can see this because the number of memory regions (mm_nregions) is also zero.

Memory regions are added to heap by mm_addregion() in mm_initialize(); There is guaranteed to be called at least once to add at least one memory regions. If the number of memory regions is zero this function failed for some reason.

The only way that the function can fail is it is passed bad parameters. The passing of the parameters is based one provided by the implementation of up_allocateheap() that you are using.

So what you must to is look at up_allocateheap() to understand what is being passed. The perhaps put a breakpoint of mm_addregion() to see exactly what it is unhappy about.

Source https://stackoverflow.com/questions/56509952

QUESTION

NuttX: How to add PWM support for STM32F7 boards? (stm32_pwm.h not found)

Asked 2019-May-24 at 22:47

I'd like to add PWM support to my nuttx board config. I am using an STM32F765VGT6 MCU.

I started implementing it like in the STM32F4Discovery config directory:

add stm32_pwm_setup() in configs//src/.h
add configs//src/stm32_pwm.c:

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ANSWER

Answered 2019-Mar-25 at 21:22

stm32_pwm.h cannot be included by applications, the include paths (intentionally) do not support. If you move the initialization code to configs/stm32f4discovery/src/stm32_bringup.c it should compile fine.

STM32F7? There is no stm32_pwm.h for STM32F7. No one has contributed the PWM driver. This time the compiler is right, the header file does not exist in arch/arm/src/stm32f7. The solution would be to port the PWM driver from a similar STM32 architecture. The choices are:

arch/arm/src/stm32 - Which includes L1, F0, F2, F3, and F4, and arch/arm/src/stm32l4 - Which is only STM32L4

Source https://stackoverflow.com/questions/55318829

QUESTION

Nuttx: why is polling required for work queue threads?

Asked 2018-Mar-10 at 17:06

The Nuttx worker threads (LP and HP) have a polling interval, only for worker thread 0. I am wondering why a polling interval is needed?

When someone queues a new work into the work queue, a worker thread will be signaled to handle it. And if all worker threads were busy, the queued work will be handled when a thread has finished current work and checks the queue again.

As about the sched_garbage_collection() work, the worker threads are signaled by sched_signal_free().

So what is the case when a polling interval is required? It seems signals are good enough to make sure worker threads are always kicked to process the works.

...

ANSWER

Answered 2018-Mar-10 at 17:06

The polling is not required. It is just there as a failsafe. I was afraid of the consequence if a notification signal were lost. That would, of course, be a bug and since I am aware of no such bugs, I have to say that that the polling is unnecessary and a waste of CPU cycles.

Another issue is the default rate of the poll which is, as I recall, 50 MS. That turns out to be one of the higher rate activities and for the highest priority task. You could set that to a much lower rate. If you want to add an option to disable the polling, that might be a good thing too.

Source https://stackoverflow.com/questions/49204981

QUESTION

Connect to Vehicle Using Telemetry on Linux

Asked 2018-Jan-09 at 14:11

I am having problems with connection to vehicle. First, I could not connect to the vehicle even with USB (I used "/dev/ttyUSB0" connection string and got an error). Later I got it working with connection string '/dev/serial/by-id/usb-3D_Robotics_PX4_FMU_v2.x_0-if00' and was able to send commands and receive response. Now I want to test it with the telemetry block connected to laptop USB. I tried the same way - with connection string "/dev/serial/by-id/usb-Silicon_Labs_CP2102_USB_to_UART_Bridge_Controller_0001-if00-port0", but it gives timeout message.

USB connection test output:

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ANSWER

Answered 2018-Jan-09 at 14:11

There are a couple of problems that can cause dronekit to fail with a connection timeout:

Ensure you have the pyserial module installed.
Specify the baud rate for your connection explicitly, as in:

Source https://stackoverflow.com/questions/48168953

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install nuttx

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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