FreeRTOS | git-svn clone of the FreeRTOS project | Runtime Evironment library

 by   blalor C Version: Current License: No License

kandi X-RAY | FreeRTOS Summary

kandi X-RAY | FreeRTOS Summary

FreeRTOS is a C library typically used in Server, Runtime Evironment applications. FreeRTOS has no bugs and it has low support. However FreeRTOS has 12 vulnerabilities. You can download it from GitHub.

This is an unofficial clone of the FreeRTOS project's Subversion repository hosted on SourceForge. You probably shouldn't depend on this repository being available for you to use.
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            kandi-support Support

              FreeRTOS has a low active ecosystem.
              It has 32 star(s) with 45 fork(s). There are 9 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 1 open issues and 0 have been closed. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of FreeRTOS is current.

            kandi-Quality Quality

              FreeRTOS has 0 bugs and 0 code smells.

            kandi-Security Security

              OutlinedDot
              FreeRTOS has 12 vulnerability issues reported (0 critical, 5 high, 7 medium, 0 low).
              FreeRTOS code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              FreeRTOS does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              OutlinedDot
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              FreeRTOS releases are not available. You will need to build from source code and install.
              Installation instructions are not available. Examples and code snippets are available.
              It has 42443 lines of code, 0 functions and 299 files.
              It has low code complexity. Code complexity directly impacts maintainability of the code.

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            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of FreeRTOS
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            FreeRTOS Key Features

            No Key Features are available at this moment for FreeRTOS.

            FreeRTOS Examples and Code Snippets

            No Code Snippets are available at this moment for FreeRTOS.

            Community Discussions

            QUESTION

            How to initialize a Queue on a second core of an ESP32?
            Asked 2022-Apr-03 at 12:08

            Currently I'm working on a Demo program to better understand working with FreeRTOS. Therefore I would like to try to initialize a Queue on my second core(core1). After initializing i would like to add something to it in a 1 second interval and whenever nothing happens I would like to check my queue and work its content off. Everything related to that queue should work on the second core. The reason being that I previously worked on a Webserver which operates on the main core. My future Queue is supposed to work in parallel on the second core.

            This is my current demoprogram:

            ...

            ANSWER

            Answered 2022-Jan-14 at 16:52

            You don't need to assume where the problem is; the answer is in the backtrace that you posted. The exception happened during a particular function call in your code:

            Source https://stackoverflow.com/questions/70708980

            QUESTION

            Reading file would overwrite reserved memory. Failed to load 'hello_world.bin
            Asked 2022-Apr-01 at 19:14

            I have imx7d-pico with Carrier board. This tiny computer was used a lot for Android Things. PDF (datasheet) easily found.

            I stay (during the last two weeks) trying this tutorial: https://github.com/TechNexion/freertos-tn/tree/freertos_1.0.1_imx7d

            ...

            ANSWER

            Answered 2022-Apr-01 at 19:14
            I solved with two changes in device-tree files:
            
            in imx7d.dtsi
            I put status = "okay";
            in rpmsg: rpmsg{
            
            in imx7d-pico-pi-qca-m4.dts
            I put:
            
            reserved-memory {
                    rpmsg_vrings: vrings0@0x8ff00000 {
                        reg = <0x8fff0000 0x10000>;
                        no-map;
                    };
                };
            
            &
            
            &rpmsg{
                memory-region = <&rpmsg_vrings>;
                vdev-nums = <1>;
                reg = <0x9fff0000 0x10000>;
                status = "okay";
            };
            

            Source https://stackoverflow.com/questions/71073386

            QUESTION

            What is a good pattern for array template compatibility?
            Asked 2022-Mar-11 at 02:09

            I would like to create objects having a variable-length array of elements, and have them be compatible in a base/derived-class sense. In C, one could put an indeterminate array at the end of a struct and then just malloc the object to contain the full array:

            ...

            ANSWER

            Answered 2022-Mar-11 at 02:09

            As a low-level C++ developer, I understand exactly what you need, and sadly, there is no replacement for flexible array members in standard C++, with or without templates. You have to keep using flexible array members via compiler extensions.

            They are not included in the language since in their current form, they are essentially a hack. They don't do well with inheritance or composition.

            The problem with templates is that, the flexible array version has a common type of arrays of all sizes. That means you can place them in arrays, have non-template functions take them as parameters etc:

            Source https://stackoverflow.com/questions/71419276

            QUESTION

            Problem with manually allocating memory address for a pointer
            Asked 2022-Feb-16 at 16:50

            I am trying to work with flash memory on MPC5748G - a microcontroller from NXP running FreeRTOS 10.0.1, and I get some behaviour that I can't understand.

            I am allocating memory manually, and the assignment seems not to work. However, I can reach the value at the address when using 'printf' - but only from the same function. (I'm using the copy of a pointer, to make sure that some sore of compiler optimisation doesn't take place)

            ...

            ANSWER

            Answered 2022-Feb-16 at 16:50

            The problem was writing to FLASH memory - it hasn't been correctly initialized.

            The proper way to write to flash on MPC5748g using the SDK 3.0.3 is following:

            • save flash controller cache
            • initialise flash
            • check and protect UT block
            • unblock an address space
            • erase a block in this space
            • check if the space block is blank
            • program the block
            • verify if the block is programmed correctly
            • check sum of the programmed data
            • restore flash controller cache

            The strange behaviour of printf and pointer was due to compiler optimization. After changing the compiler flags to -O0 (no optimization), the error was consistent.

            The same consistent error can be achieved when marking the pointers as 'volatile'.

            Source https://stackoverflow.com/questions/71069626

            QUESTION

            device tree ERROR: Unable to parse input tree (syntax error)
            Asked 2022-Feb-16 at 16:34

            I'm correctly generating my image Yocto-hardknott-technexion with this:

            ...

            ANSWER

            Answered 2022-Feb-16 at 16:34

            The solution was to change imx7d-pico-pi-m4.dtb to imx7d-pico-pi-qca-m4.dtb in the Yocto/Hardknott/technexion configuration file called pico-imx7.conf(described in the post)

            Source https://stackoverflow.com/questions/71011872

            QUESTION

            What is a pre-allocated buffer, and how should you use one?
            Asked 2022-Jan-26 at 14:46

            I am studying FreeRTOS, and in their tutorial book they talk about using "a pool of pre-allocated buffers" for holding pointers to char[] arrays (to pass between tasks via a queue).

            In the example found in Chapter 4.5 Working with Large or Variable Sized Data, they reference this sudo function called prvGetBuffer() and state "The implementation of prvGetBuffer() is not shown – it might obtain the buffer from a pool of pre-allocated buffers, or just allocate the buffer dynamically.". This seems like a funciton I would like to take a look at, but its nowhere to be found in their docs / examples.

            What exactly is "a pool of pre-allocated buffers", and what does an implementation look like in C/C++? I can't find much on the internets about this.

            I want to assume it is perhaps a 2-dimensional array that is "statically" allocated prior to run-time. Maybe it gets declared like char strBuffer[5][50]; or something - idk.

            ...

            ANSWER

            Answered 2022-Jan-25 at 14:24

            What exactly is "a pool of pre-allocated buffers",

            A memory buffer is region of memory where objects can potentially be created. Allocation is the act of acquiring a resource and in this case the resource is a memory buffer.

            "Pre" prefix implies that the allocation will have happened before prvGetBuffer is called. A "pool" is an abstract description of a collection of things, such as a data structure.

            Source https://stackoverflow.com/questions/70850115

            QUESTION

            Passing 'this' pointer to a static method in a parent class
            Asked 2022-Jan-18 at 08:51

            I am writing an embedded application using freeRTOS and I'm trying to do it in a neat, object-oriented fashion.

            To start a FreeRTOS task from within an object, you need to give it a static function. In order to make it possible to use non-static variables inside that function, I've been implementing it in the following way:

            ...

            ANSWER

            Answered 2022-Jan-18 at 08:51

            Declaring a virtual loop function in BaseMode worked. Forgot these even existed.

            Source https://stackoverflow.com/questions/70748442

            QUESTION

            Merging all changes from a GitHub repository to a non-GitHub repository, similar to fork functionality
            Asked 2022-Jan-04 at 15:25

            I have a repository based on "https://github.com/MicrochipTech/amazon-freertos.git", I have pushed this to my own repository, which is not in Github so I believe fork is not possible. In my newly created copy I have added my application files as well as some changes to the amazon source files. This is committed and pushed to my private repository.

            When the amazon repository eventually changes, is there some way that I can merge those changes into my repository, yet keeping the changes i have made to the previous version of that repository? Note that I will have modified some of the files that are part of the amazon repository so I cannot simply have it as a submodule.

            Edit: As suggested I have:

            ...

            ANSWER

            Answered 2022-Jan-04 at 11:44

            You can have multiple git remotes and pull in changes from either of them.

            You can clone the original repository with a custom remote name, e.g.:

            Source https://stackoverflow.com/questions/70576909

            QUESTION

            Sending large amount of data from ISR using queues in RTOS
            Asked 2021-Dec-18 at 21:02

            I am working on an STM32F401 MC for audio acquisition and I am trying to send the audio data(384 bytes exactly) from ISR to a task using queues. The frequency of the ISR is too high and hence I believe some data is dropped due to the queue being full. The audio recorded from running the code is noisy. Is there any easier way to send large amounts of data from an ISR to a task?

            The RTOS used is FreeRTOS and the ISR is the DMA callback from the I2S mic peripheral.

            ...

            ANSWER

            Answered 2021-Dec-14 at 12:44

            The general approach in these cases is:

            1. Down-sample the raw data received in the ISR (e.g., save only 1 out of 4 samples)
            2. Accumulate a certain number of samples before sending them in a message to the task

            Source https://stackoverflow.com/questions/70348882

            QUESTION

            How to know which task has taken a binary semaphore?
            Asked 2021-Nov-16 at 21:39

            I have three tasks, which shares a binary semaphore myBinarySemaphore. I'd like to know which task is currently having the binary semaphore. I could use a global variable to do this but does freeRTOS provide a method for this ?

            Here's the code, I'm looking for a freeRTOS method to check which task has the binarySemaphore, in taskC for example. xTaskOwner is pure invention for example purpose. Thanks.

            ...

            ANSWER

            Answered 2021-Nov-16 at 21:39

            I would add a Queue with a simple message in it that says which task currently has the semaphore. Every time you take the semaphore, you overwrite the queue. In taskC you can do a xQueuePeek and see which task did the overwrite.

            OR

            You can use event flags to signal which task has the semaphore. Each task has its own flag on a share event group.

            Source https://stackoverflow.com/questions/69027678

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

            Vulnerabilities

            No vulnerabilities reported

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            You can download it from GitHub.

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