Quality RTOS & Embedded Software

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


vtaskdelay blocks my task indefinitely

Posted by Angel Eyes on September 2, 2008
Hi vTaskdelay API is blocking my task indefinitely .

I have inserted vTaskDelay( 1 ) ; in my code and the task gets suspended. I know that the tick ISR is getting generated still this wont work , what could be the problem ?.

RE: vtaskdelay blocks my task indefinitely

Posted by ivernot on September 3, 2008
Have you tried whether vTaskDelay(100) works (or any number greater than 1) -

'1' means 1 TICK - this is generally not useful as the time taken to enter and exiting the function may be approaching 1 TICK anyway
Try a bigger number report back.

Ivan Vernot

RE: vtaskdelay blocks my task indefinitely

Posted by Angel Eyes on September 3, 2008
Hi Ivan ,

Tried with 10 , still the same problem . The problem could be that I am working on the Skyeye simulator for Samsung S3C4510 processor and not the real hardware. Also, I have observed for the simulator that one tick takes a long time to elapse . I need to check on the hardware shortly.


RE: vtaskdelay blocks my task indefinitely

Posted by Richard on September 3, 2008
If you are sure the tick is still running then check also for stack overflows. This is the most common cause of problems.



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

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

Latest News

Version 10.1.0 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.


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


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