Quality RTOS & Embedded Software

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


Loading

ATmega 32 , Waking a task from an ISR

Posted by areeg on January 17, 2018

I'd like to konw how to keep a task idle and wake it from an ISR , for a specific time ,then return idle Thanks


ATmega 32 , Waking a task from an ISR

Posted by rtel on January 18, 2018

There are lots of different ways - queues, semaphores, event groups, stream buffers, message buffers can all be used to wake a task from an interrupt. As a starting point for you I would recommend looking at task notifications - as that is one of the most efficient ways. The first link gives an overview of task notifications, the second has a code snippet showing interrupt to task notifications.

https://www.freertos.org/RTOS-task-notifications.html https://www.freertos.org/RTOSTaskNotificationAsCounting_Semaphore.html


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


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

Latest News

FreeRTOS v10.2.1 is available for immediate download. MIT licensed, includes 64-bit RISC-V, NXP Cortex-M33 demo & Nuvoton Cortex-M23 demo.

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

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

Cadence Tensilica Cortes

Espressif ESP32

IAR Partner

Microchip Premier RTOS Partner

RTOS partner of NXP for all NXP ARM microcontrollers

Mediatek

Renesas

RISC-V

SiFIve RISC-V

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