Quality RTOS & Embedded Software

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


Loading

FreeRTOS 4.0.4, GCC, ARM7_AT91SAM7S: portmacr

Posted by Thomas K.-H. Nittel on July 19, 2006
Hello, Richard,

I compiled FreeRTOS 4.0.4. with arm-elf-gcc 4.1.0. It seems that there is a write error in the file 'FreeRTOS\Source\portable\GCC\ARM7_AT91SAM7S\portmacro.h'.
The line 234 '#define portDISABLE_INTERRUPTS()' seems being too much.

Best regards

Thomas

RE: FreeRTOS 4.0.4, GCC, ARM7_AT91SAM7S: portmacr

Posted by Nobody/Anonymous on July 19, 2006
Sorry, don't understand.

RE: FreeRTOS 4.0.4, GCC, ARM7_AT91SAM7S: port

Posted by Thomas K.-H. Nittel on July 19, 2006
This is the original code:
#ifdef THUMB_INTERWORK
...
#else
#define portDISABLE_INTERRUPTS()\
#define portDISABLE_INTERRUPTS()\
asm volatile (\
...
#define portENABLE_INTERRUPTS()\
asm volatile (\
...
#endif /* THUMB_INTERWORK */


If the second branch is compiled the error message 'error: '#' is not followed by a macro parameter' appears.

If the code is modified as follows there isn't an error message.

#ifdef THUMB_INTERWORK
...
#else
#define portDISABLE_INTERRUPTS()\
asm volatile (\
...
#define portENABLE_INTERRUPTS()\
asm volatile (\
...
#endif /* THUMB_INTERWORK */

RE: FreeRTOS 4.0.4, GCC, ARM7_AT91SAM7S: port

Posted by Richard on July 19, 2006
Hi Thomas,

Thanks for pointing that out. Looks like a paste problem. I will remove the extra line.

However - there are not any demos that actually use that path through the code. The only command line GCC demo for the SAM7 is the lwIP demo. Is this what you are building, or do you have your own setup? I think I have on file some command line projects for the SAM7S, but I suspect they will be using THUMB mode.

Regards.

RE: FreeRTOS 4.0.4, GCC, ARM7_AT91SAM7S: port

Posted by Thomas K.-H. Nittel on July 19, 2006
Hi Richard,
I have set up a small FreeRTOS project based on FreeRTOSV4.0.4\FreeRTOS\Demo\lwIP_Demo_Rowley_ARM7 to evaluate FreeRTOS on Atmel's evaluation board AT91SAM7X256-EK. I use the same compiler options as this project, i.e. I use the thumb mode and don't use the discussed path through the code either. But when I looked through the code this line attracted my attention.
Regards.
Thomas


[ 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.


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