Quality RTOS & Embedded Software

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


Loading

Yagarto - STM32F2xx (Cortex-M3) MEMCPY error

Posted by Mike on February 28, 2013
I can get a simple program working, but when I add the FreeRTOS files I get a error:

queue.c:1317: undefined reference to `memcpy'

I thought the memcpy should be found by 'arm-none-eabi-gcc' but all seems well until I run the linker arm-none-eabi-ld

How can I get either gcc to include the memcpy function or include this in the ld linker?

RE: Yagarto - STM32F2xx (Cortex-M3) MEMCPY error

Posted by Richard on March 1, 2013
It looks like your GCC command line is wrong. Do you have '-l[library]' (where [library] is the name of the library that contains memcpy()) included in the command line? You can check some of the makefiles that are included in subdirectories of the FreeRTOS/Demo directory for examples, but be aware many of them are very old as the newer projects tend to use Eclipse managed make.

Regards.

RE: Yagarto - STM32F2xx (Cortex-M3) MEMCPY error

Posted by Mike on March 1, 2013
memcpy can be founf in libc.a, but if I add this as a library to the linker ld, this just throws up a greater can of worms.

If I use gcc to create an output file then this seems to find the missing functions, but then it all goes bad during debug where the vector table seems to have errors.

None of the files in the demo area are directly for the STM32F205, furthermore it's not clear what start-up files they use.

At least with your own makefile, I know precisely what is being compiled and linked, and can run the makefile outside of Eclipse.

Many thanks for your reply.


[ 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