Quality RTOS & Embedded Software

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


Loading

PORTA availability

Posted by Robert Brock on April 16, 2009
Hi,

My target is an ATMega323 and I am working on a simple example where I set/clear bits on PORTA from within a spawned task just to verify the task is running. The xTaskCreate call appears to work based on the return value, but PORTA does not get updated. If I move the PORTA manipulation outside of the task, it works fine. Do I need to do something specific to enable port manipulation from within a task?

Thanks,

Robert

RE: PORTA availability

Posted by Adam Turowski on April 16, 2009
Have you started the scheduler vTaskStartScheduler
after creation of tasks?

RE: PORTA availability

Posted by Robert Brock on April 29, 2009
What a rookie mistake. Started the scheduler and everything began working. Thanks.


[ 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.

Meet Richard Barry and learn about running FreeRTOS on RISC-V at FOSDEM 2019

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