Quality RTOS & Embedded Software

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


at91sam7a3 port

Posted by chrigus on July 23, 2009
i try to port the freertos to my at91sam7a3 ek. i took the at91sam7s64 IAR example, changed the device general option to sam7a3, the linker script to at91SAM7A3_FLASH.icf:
ROM: 0x100000 - 0x13FFFF
RAM: 0x200000 - 0x207FFF
CSTACK: 0x1000
SVC_STACK: 0x100
HEAP: 0x2000

debug macro to at91sam7a3-ek-flash.mac
flash loader options:
Range: 0x100000 - 0xFFFFFFFF
Offset: 0
extra paramters: --flash
i'm using de same Cstartup.x and Cstartup_Sam7.c files.
The LEDs are configured to the correct port and are blinking with a test routine.

But by acitivating the task
vStartLEDFlashTasks( mainFLASH_PRIORITY );
and the Scheduler
the programm runs to main() and i can start it. but
the programm doesn't do anything.

while flashing i get the following error:
Flash download warning: 64 out of 64 bytes from data record CODE:[0x00000000,0x0000003F] will not be flashed

who can help me?

RE: at91sam7a3 port

Posted by Dave on July 23, 2009
I suggest ignoring any debugging until you have got the part flashing without errors. There is no point debugging if you know the code in the processor is wrong.

RE: at91sam7a3 port

Posted by chrigus on July 23, 2009
but where is the flashing error from? wrong flash config? wrong linker config? my own software and the atmel example programs all work fine.

RE: at91sam7a3 port

Posted by chrigus on July 24, 2009
Is there nonbody who has experiences ?

RE: at91sam7a3 port

Posted by chrigus on July 27, 2009
I'm still looking for help with porting freertos to a sam7a3.

RE: at91sam7a3 port

Posted by Richard on July 27, 2009
I have some SAM7A3 IAR projects that were sent to me by a third party, but these are very old and probably based on IAR V4.x. If you want a copy then write to me directly at r dot barry [at] freertos.org.


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

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

Latest News

Version 10.1.0 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.


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


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