Quality RTOS & Embedded Software

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


Locate functions in RAM (RAMFUNC; .fastrun)

Posted by Christoph Kronen on July 21, 2011

since all the tasks are created in RAM, I was asking myself if it is also possible to put functions like Interrupt Handlers into the RAM, too. I found this description in the AT91 lib:

Attribute which defines a function to be located
in memory section .fastrun and called via "long calls".
See linker-skript and startup-code to see how the
.fastrun-section is handled.
The definition is not only useful for ISRs but since
ISRs should be executed fast the macro is defined in
this header
#define RAMFUNC __attribute__ ((long_call, section (".fastrun")))

RE: Locate functions in RAM (RAMFUNC; .fastrun)

Posted by Christoph Kronen on July 21, 2011
Thank you for your help, missing the "Edit" button *g*

[ 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