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Questions tagged [rtx]

46 questions
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WaitForSingleObject and Events, unclear behaviour

I wrote two little test applications with Visual Studio 2017 on Windows 10 64 bit with which I wanted to test Events and WaitForSingleObject. I am also using RTX realtime extensions from intervalzero. One of my application is written in x64 Code for…
Wolfgang Roth
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Keil RTX priority inheritance with os_mut_wait and short timeout?

Priority Inheritance is a feature of Keil RTX (and others) to prevent priority inversion. If a high priority task is trying to obtain the mutex already obtained by a low level task, priority inheritance would normally cause the low level task to be…
Ant
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RTX isr_evt_set service is delayed

I'm working on a Silicon Labs EFM tiny-gecko HW, running RTX using 4.22 arm tool chain. I have the following configuration for RTX: - NVIC grouping 7.1 - System Tick & Pend System service interrupt priority 224. - Both interrupts are enabled and…
amit katz
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STM32 RTX Usage Fault PSP 0x00000020

I have a project with an STM32F446, with RTX, 3 threads (main + 2 declared by me) + of course the idle one. The main thread enters wait state after starting the two threads so i have just two threads running. The RTX has round robin disabled. What…
a85ja
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RTX Keil and ADC_DMA, not entering GUI_thread

Hello I'm started programming a STM32F769I_Eval. I'm an absolutely beginner in programming a Cortex M4 and using a RTOS. I used the basic examples to get started. Now I want do use the ADC with DMA to show the current value at the LCD. I tried this…
Alex
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To develop FAT file system and USB host mass storage by keil middleware 5 without rtx?

I am developing (with lpc 1768 ) FAT file system and USB host mass storage by Keil middle wares version 5. In the uvision "manage runtime environment"says must to enable rtx. I have two questions: is it possible do that without rtx (by keil middle…
Rasool
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What is correct procedure following a failure to connect a TCP socket?

I'm writing a TCP client using asynchronous calls. If the server is active when the app starts then it connects and talks OK. However if the first connect fails, then every subsequent call to connect() fails with WSAENOTCONN(10057) without producing…
Richard Urwin
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RTX implementation with Eclipse

I have to implement the RTOS RTX on a Nucleo-F411RE board (Cortex-M4). I have to do it with Eclipse, but I don't know how I should do it. Moreover, I tried to compile it with the GCC compiler, and I had many errors like : _ error: stray '#' in…
Gaëtan
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IAP Bootloader could not load RTX application image

I have splitted software into two parts: Bootloader(without RTX), Application image with RTX. But the bootloader could not load the application image with RTX. The Flash settings…
lrouter
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keil rtx osdelay not creating accurate delays

I am working on a board which comprises LPC1768 microcontroller. All I want to do is to create an accurate time delay using osdelay function of CMSIS RTOS API. I have set my systick time tick count to 10000.But when I use osdelay(1000) in my thread,…
Rahul Gusai
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Controlling when Keil RTX starts

I am writing a bootloader for an ARM Cortex-M3 that utilizes a relatively complex communications interface; this is the same as the actual application uses. The application uses Keil's RTX as its kernel, and the communications stack relies on that.…
Bob
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Why event flag related functions does not work correctly outside of tasks in keil rtx?

As you know event flags are very useful (e.g. let task running),but unfortunately their control functions (os_evt_clr/set/wait) does not work outside of tasks bodies correctly(e.g. in interrupt handling functions). For alternative i used a variable…
Dzzz
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Fixed time for executing a task on the KEIL RTX RTOS

I am using KEIL RTX RTOS which used pre-emptive round robin scheduler.I have a LCD for displaying data and a few tasks have access to this LCD(there are some other tasks also),These tasks need fixed time for handling the LCD(e.g. first task handle…
Mahmoud Hosseinipour
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Project Deployment in RTX Dev kit

After compiling a project USING AMILIE SDK RTX4140_... by RTX how to deploy the hex file in the RTX dev kit[Board]. dev kit device image http://www.rtx.dk/RTX41xx_Development_Kit-4020.aspx
JACOB DEEPAK
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Can we port Asterisk in rtxRTOS

Currently I'm porting asterisk general purpose OS, but these are heavier OS, so is there any way that we can port asterisk in Real Time OS(RTOS) e.g. rtxRTOS
Prashant Singh
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