Quality RTOS & Embedded Software

 Real time embedded FreeRTOS RSS feed 
Quick Start Supported MCUs PDF Books Trace Tools Ecosystem TCP & FAT Training




xQueuePeekFromISR
[Queue Management]

queue.h
 BaseType_t xQueuePeekFromISR(
                                 QueueHandle_t xQueue,
                                 void *pvBuffer,
                                );
 

A version of xQueuePeek() that can be used from an interrupt service routine (ISR).

Receive an item from a queue without removing the item from the queue. The item is received by copy so a buffer of adequate size must be provided. The number of bytes copied into the buffer was defined when the queue was created.

Successfully received items remain on the queue so will be returned again by the next call, or a call to any queue receive function.

Parameters:
xQueue   The handle to the queue from which the item is to be received.
pvBuffer   Pointer to the buffer into which the received item will be copied. This must be at least large enough to hold the size of the queue item defined when the queue was created.
Returns:
pdTRUE if an item was successfully received (peeked) from the queue, otherwise pdFALSE.





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




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

Latest News

FreeRTOS kernel V10 is available for immediate download. Now MIT licensed.


FreeRTOS Partners

ARM Connected RTOS partner for all ARM microcontroller cores

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