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Search results 1-20 of 261.

Friday, November 17th 2017, 10:05am

Author: SEGGER - Til

CMSIS-rtos interface to embOS

Hello Marek, Quoted Is it possible to get the CMSIS-rtos solution as support from you? Yes, sure. Are you looking for CMSIS-RTOS v1 or CMSIS-RTOS v2? http://arm-software.github.io/CMSIS_5/RTOS/html/index.html http://arm-software.github.io/CMSIS_5/RTOS2/html/index.html We have support for both versions but they are sold separately. Quoted Is your solution compatible only with some specific embOS version (oldest which we are using is 3.88)? CMSIS RTOS v1 layer can be used with any embOS version. C...

Friday, November 3rd 2017, 11:56am

Author: SEGGER - Til

Interrupt-stack switching on RL78 for zero-latency interrupts

Hi Markus, Quoted In the RL78 embOS manual it is described that zero-latency interrupts must not execute any embOS function. Therefore it is not allowed to call the functions OS_EnterIntStack resp. OS_LeaveIntStack, is that correct? Yes, that's correct. Quoted This means that all tasks must preserve some space on their stack for the zero-latency interrupts because the switching is not allowed. Depending on the zero-latency ISR implementation this can afford large stacks for all tasks... Unfortun...

Sunday, October 29th 2017, 2:31pm

Author: SEGGER - Til

Change CPU frequency after OS_Start();

Hello Kari, if you just want to change the CPU frequency at run-time you can do so with no major impact to the OS. You must just ensure the system tick interrupt still occurs at the same period by e.g. adjusting the timer clock settings or timer reload/compare value. Best regards, Til

Monday, October 23rd 2017, 4:33pm

Author: SEGGER - Til

OS_WD_Config(): How to configure pfTriggerFunc?

Quoted If I'm correct, my watchdog in Idle loop is efficient for: -> trapped in OS_Error(), -> infinite loops without OS_Delay() consuming all the resource, Yeah, that's it. Usually you don't have the debug code and OS_Error() in your release firmware. Although you can do so, of course! But in that case you could also directly reset your microcontroller in OS_Error().

Monday, October 23rd 2017, 9:52am

Author: SEGGER - Til

OS_WD_Config(): How to configure pfTriggerFunc?

Dear JLuc, Quoted In my mind, if any task is blocked, the idle loop is not reached anymore and the hardware watchdog is triggered. There could be situations where one task is not running as expected but OS_Idle() still gets executed. Also triggering the watchdog in OS_Idle() only does not help because there could be a task which runs for a long time and therefore you don't reach OS_Idle() on time. I guess you think of situations only where the CPU "stops" in a task and no further code gets execu...

Wednesday, October 18th 2017, 10:19pm

Author: SEGGER - Til

Queues: queue pointer corruption

Hello Bryan, i am not aware of such an issue but please let me double check tomorrow (I am not in office right now). We will contact you directly by email or phone. I am pretty sure we can solve your issue tomorrow. Quoted This mentions making the buffer size larger than the sum of all messages, but it doesn't state HOW MUCH LARGER. Any clue? The queue data buffer contains the messages and some additional management information. Each message has a message header containing the message size. The ...

Thursday, October 5th 2017, 8:38am

Author: SEGGER - Til

Will OS_EnterRegion()/OS_LeaveRegion() prevent a software timer from running its handler?

Hi Kenny, Yes, embOS software timer are executed from within the scheduler. Therefore you should keep your critical regions with OS_EnterRegion()/OS_LeaveRegion() as short as possible. Best regards, Til

Wednesday, September 13th 2017, 1:18pm

Author: SEGGER - Til

Code getting stuck in OS_InitKern_STD

Hi Gautam, I got your email, so we can continue the discussion there. Best regards, Til

Wednesday, September 13th 2017, 11:54am

Author: SEGGER - Til

Code getting stuck in OS_InitKern_STD

Hi Gautam, do you have an embOS license or are you working with an embOS trial version? You can also contact our embOS support directly per email. Please find the email address in the embOS manual in chapter "Support". OS_InitKern() does not call OS_Delay() at all. I don't see your call to OS_Delay() in your code snippet. Please be aware OS_Delay() can only work after the hardware timer was initialized and interrupts are enabled. This is usually done in OS_InitHW(). If you call OS_Delay() in mai...

Wednesday, July 19th 2017, 3:50pm

Author: SEGGER - Til

OS_WD_Config(): How to configure pfTriggerFunc?

Hi, from the embOS manual: Quoted pfResetFunc may be used to perform additional operations inside a callback function prior to the reset of the microcontroller. The reset function is optional and gives the chance to react on such a situation. You could e.g. write a message in a log file or set a piece of hardware in safe state before resetting the μC. The basic idea is that one hardware watchdog is not enough for an RTOS with multiple tasks. If you would trigger the hardware watchdog in one task...

Friday, June 30th 2017, 9:00am

Author: SEGGER - Til

ThreadX support for SystemView?

The best and easiest solution would be to use our RTOS embOS instead of FreeRTOS or ThreadX. embOS is already prepared to run perfectly out of the box with SystemView. If you are working on non commercial projects you can use the embOS trial version. And if you are working on commercial products please contact us and we'll find a quick and inexpensive solution for you. Best regards, Til

Monday, June 19th 2017, 12:27pm

Author: SEGGER - Til

OS_TIME signed variable?

Hi Martin, we are using signed time values and calculate timeouts with subtractions. This make it's easy to handle overflows which means all timing functions just works (even if there is an overflow). Quoted I always need to check for timer overflows myself when working with time differences?! No, you don't have to check anything by yourself. You can just use embOS API like e.g. OS_Delay() and it will always works. Best regards, Til

Friday, May 26th 2017, 8:36am

Author: SEGGER - Til

Cortex M3 Peripherals SVD File?

You can also check out our Cortex-M HardFault Application note at https://www.segger.com/downloads/appnotes.

Wednesday, May 24th 2017, 9:15am

Author: SEGGER - Til

Cortex M3 Peripherals SVD File?

I think what you are looking for is the ARMCM3.svd file which can be found in the CMSIS-core package. Please have a look here: https://www.arm.com/products/processors/…ce-standard.php

Thursday, March 30th 2017, 11:22am

Author: SEGGER - Til

unsupported debug_info format

Hi Rolf, embOS Cortex-M IAR V8 is only for IAR EWARM V8. It cannot be used with IAR EWARM V6/V7. For IAR EWARM V6/V7 please use embOS Cortex-M IAR V6. Best regards, Til

Thursday, March 30th 2017, 8:54am

Author: SEGGER - Til

Can OS_TASK_EVENT be 64-bit unsigned on 32-bit ARM Cortex-M?

Hi Scott, basically that should be doable since we already disable the interrupts while modifying the task event bit mask. You will need to define OS_TASK_EVENT as a 64 bit unsigned in e.g. your project settings while working with the embOS sources. But please contact us directly by email. That makes it easier to discuss the details. Best regards, Til

Thursday, March 23rd 2017, 9:22am

Author: SEGGER - Til

CMSIS-rtos interface to embOS

Hello, we already implemented the CMSIS RTOS layer. But this layer has a lot of disadvantages in comparison to our embOS API. Please contact us directly for further information. Best regards, Til

Friday, March 17th 2017, 2:54pm

Author: SEGGER - Til

embOS for Cortex-M with IAR 8.10.1

HI, IAR changed the TLS support with IAR EWARM V8. Thus some minor modifications in embOS are necessary. We will release an updated embOS version in the next week. Best regards, Til

Friday, March 10th 2017, 9:34am

Author: SEGGER - Til

embOS Simulator Stimuli

HI Benjamin, the embOS Simulation simulates 100% the embOS API and can be adapted to your requirements. It is possible to use the complete Windows API inside the simulation, thus you can easily communicate with other applications or hardware. I am not sure if I understood the last question correctly but I guess it's about using the same application in simulation and target hardware? Please be aware only the embOS API is simulated but not e.g. the STM32 peripherals. Anyhow we can help you to setu...

Wednesday, March 1st 2017, 4:30pm

Author: SEGGER - Til

embOS and STM32 CubeMX

Thanks for sharing this with us. I guess this could be also of interest for other embOS users. Best regards, Til