Quality RTOS & Embedded Software

 Real time embedded FreeRTOS RSS feed 
Quick Start Supported MCUs PDF Books Trace Tools Ecosystem


Loading

FreeRTOS+Trace, wrong periods

Posted by pr0metha on May 31, 2013
Hello,
I'm currently trying to analyze my FreeRTOS application with Percepios trace software. I'm using a TMS570 microcontroller. I get everything running and I get a nice trace using periodic tasks, but all the periods of the tasks are halved. As an example: If I have two tasks with the period of 10 ms and 250 ms, the Trace software shows a period of 5 ms and 125 ms.

I use the same way of setting the periods as in the demo code, that is:

#define SHORT_DELAY_MS( 10 / portTICK_RATE_MS )

Later, in the task, the delay is achieved with:

vTaskDelayUntil( &xNextWakeTime, SHORT_DELAY_MS );


I know that the trace port to TMS570 is unofficial, but I've looked into the port and I can't find anything wrong. Does anyone know what can be wrong, besides the trace port?

RE: FreeRTOS+Trace, wrong periods

Posted by Richard on May 31, 2013
If all the times are recorded as being exactly half of the true value then I would guess that there is a mistake in the configuration somewhere, but I'm not sure where to look. Please contact Percepio support directly (go to percepio.com and follow the links for support).

Regards.

RE: FreeRTOS+Trace, wrong periods

Posted by pr0metha on May 31, 2013
Yes, it seems like all the recored times are exactly half of the true value. I will contact them. Thanks for your reply!


[ Back to the top ]    [ About FreeRTOS ]    [ Privacy ]    [ Sitemap ]    [ ]


Copyright (C) Amazon Web Services, Inc. or its affiliates. All rights reserved.

Latest News

NXP tweet showing LPC5500 (ARMv8-M Cortex-M33) running FreeRTOS.

Version 10.1.1 of the FreeRTOS kernel is available for immediate download. MIT licensed.

View a recording of the "OTA Update Security and Reliability" webinar, presented by TI and AWS.


Careers

FreeRTOS and other embedded software careers at AWS.



FreeRTOS Partners

ARM Connected RTOS partner for all ARM microcontroller cores

Espressif ESP32

IAR Partner

Microchip Premier RTOS Partner

RTOS partner of NXP for all NXP ARM microcontrollers

Renesas

STMicro RTOS partner supporting ARM7, ARM Cortex-M3, ARM Cortex-M4 and ARM Cortex-M0

Texas Instruments MCU Developer Network RTOS partner for ARM and MSP430 microcontrollers

OpenRTOS and SafeRTOS

Xilinx Microblaze and Zynq partner