Quality RTOS & Embedded Software

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


Multiple variables on the same queue

Posted by juankike11 on October 21, 2015

Hello everyone. I'm new using the FreeRTOS. I want't to have a task that controlls a TCP communication, so another task is going to pass it the IP, port and data to send. My question is, What is the best way to pass this information? if the IP is an unsigned long, the port is an unsigned int and the data is char and if it´s possible just use a Queue to send the information. Thanks for your time.

Multiple variables on the same queue

Posted by rtel on October 21, 2015

Take a look at the implementation of FreeRTOS+TCP (http://www.freertos.org/tcp). It uses a single queue to pass all types of data to the task that manages the TCP/IP stack itself - packets arriving from the network, packets being sent to the network, connect events, abort events, shutdown events, etc. It does this by using a queue to send structures. One member of the structure is an enumerated type that describes the data (for example, received packet) and another member of the structure that holds the data (using the same example, a pointer to the buffer in which the received data is located). How the data is interpreted depends on the value of the enumerated type.

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

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

Latest News

FreeRTOS v10.2.0 is available for immediate download. MIT licensed, and including RISC-V and ARMv8-M (Cortex-M33) demos.

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.


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





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