Creating new project at free RTOS
Hi
I have problem creating new project at win32 simulator,using eclipse.
I have defined to the eclipse , all the relevant paths of includes, and add the all relevant
source files as told at : http://www.freertos.org/Creating-a-new-FreeRTOS-project.html
I have lots of link errors, for example:
undefined reference prvTraceGetCurrentTaskHandle at task.c queue.c etc
Please help
Creating new project at free RTOS
You have probably included definitions for the trace macros, but not included the FreeRTOS+Trace recorder source file. Is "trcKernelPort.h" being included from FreeRTOSConfig.h? The #include will probably be at the bottom of the source file if it is. That is the header file that defines the trace macros, so if you comment out the inclusion of the header file then those errors should disappear. If you have any other build errors then post the compiler's output here. Regards.
Creating new project at free RTOS
The “trcKernelPort.h” file should not be included?
Creating new project at free RTOS
If trcKernelPort.h is included then you must also include the
FreeRTOS+Trace recorder source files – otherwise you will get linker errors.
If you are creating a new project I would recommend not including
trcKernelPort.h, so commenting it out. Once you have your project
running you can always add in the trace recorder at a later time.
Regards.
Creating new project at free RTOS
The link errors occurs , even when I include the FreeRTOS+Trace recorder source files.
the path is:
C:FreeRTOSFreeRTOSDemoWIN32-MingWTraceRecorderConfiguration
Creating new project at free RTOS
I have new problem now:
I have written little test:
include <stdio.h>
include “FreeRTOS.h”
include “task.h”
include “queue.h”
include “timers.h”
int main(void) { xTaskStartScheduler(); while(1); return 0; } the compiler outputs: undefined reference to `xTaskStartScheduler’ main.c /FirstFreeRTOSPRoj line 11 C/C++ Problem as an error and implicit declaration of function ‘xTaskStartScheduler’ [-Wimplicit-function-declaration] as a warningCreating new project at free RTOS
The link errors occurs , even when I include the FreeRTOS+Trace recorder source files.Generally when debugging or building I would be tempted to consolidate what I have, or remove functionality to get a clean building base from where to work – rather than add more files in when what I have is already not building.
undefined reference to `xTaskStartScheduler’ main.c /FirstFreeRTOSPRoj line 11 C/C++ Problem as an errorAh good, sounds like you have made progress then. This one is easy to fix; The name of the function is vTaskStartScheduler() [note the v prefix, rather than the x prefix, because it is a void function]. Regards.
Creating new project at free RTOS
Hi
Thanks for replying,
I changed it to, vTaskStartScheduler()
still have the error code
Creating new project at free RTOS
What error code? Undefined reference to xTaskStartScheduler()?
Regards.
Creating new project at free RTOS
No,
What error code? Undefined reference to vTaskStartScheduler()
undefined reference to `vTaskStartScheduler’ main.c /FirstFreeRTOSPRoj line 11 C/C++ m
Creating new project at free RTOS
No,
Undefined reference to vTaskStartScheduler()
undefined reference to `vTaskStartScheduler’ main.c /FirstFreeRTOSPRoj line 11 C/C++ m
Creating new project at free RTOS
Why dont you start with the example in the download that is already building then just remove the code you dont want?
Creating new project at free RTOS
Hi Dave, thanks for replying
Already done it, and it works.
But as a programmer, I need to know the problems and try to solve them, not
eliminate them.
Creating new project at free RTOS
Hi guys
I assume you don’t have any solution for me?
Creating new project at free RTOS
Hi guys
I solved the last problem, with the error Undefined reference to vTaskStartScheduler()
by adding the source files queue.c list.c task.c and port.c
But now, I get the old problem:
Description Resource Path Location Type
undefined reference to
prvTraceGetCurrentTaskHandle' queue.c /FirstFreeRTOSPRoj line 1502 C/C++ Problem
undefined reference to
prvTraceGetCurrentTaskHandle’ queue.c /FirstFreeRTOSPRoj line 1396 C/C++ Problem
more undefined references to vAssertCalled' follow port.c /FirstFreeRTOSPRoj line 514 C/C++ Problem
more undefined references to
vAssertCalled’ follow queue.c /FirstFreeRTOSPRoj line 620 C/C++ Problem
more undefined references to vAssertCalled' follow queue.c /FirstFreeRTOSPRoj line 1729 C/C++ Problem
undefined reference to
prvTraceGetCurrentTaskHandle’ tasks.c /FirstFreeRTOSPRoj line 876 C/C++ Problem
undefined reference to prvTraceGetCurrentTaskHandle' queue.c /FirstFreeRTOSPRoj line 1016 C/C++ Problem
undefined reference to
prvTraceGetCurrentTaskHandle’ queue.c /FirstFreeRTOSPRoj line 928 C/C++ Problem
and more and more
please help
Creating new project at free RTOS
Look at the project that works and see what files and configuration it uses
and compare it to your new project…
This is all very basic setup of the IDE your using and NOT directly related
to FreeRTOS issues….
Make sure the FreeRTOSconfig.h is set with the correct option for your
development…
Make sure you have the correct port.c file for your processor…
Make sure the IDE knows the path to all of the .h and .c files…
Search the forum, you will most likely find solutions to all of your
questions…
The issue you have are very easy to solve. Just look!, then you will
understand….
good luck…
Creating new project at free RTOS
Hi guys
I solved the problem
it seems that in win32 simulator
there are some functions defined at main.c
that some source files defined them as external function.
Therefore when creating new project, at the main file these functions
have to appear(and defined correctly).
Creating new project at free RTOS
I assume you don’t have any solution for me?We can’t offer solutions if we don’t know what the problem is. For example….
I solved the last problem, with the error Undefined reference to vTaskStartScheduler() by adding the source files queue.c list.c task.c and port.cAs your first post referenced a documentation page that tells you to add these files (http://www.freertos.org/Creating-a-new-FreeRTOS-project.html), it would not occur to a responder on the forum that in fact you had not included the files – but were trying to call functions in them – hence they would not offer that as a potential solution.
it seems that in win32 simulator there are some functions defined at main.c that some source files defined them as external function. Therefore when creating new project, at the main file these functions have to appear(and defined correctly).….except that is not the case. The Windows port has no more dependencies than any other port. It looks like your FreeRTOSConfig.h file is defining macros that call functions that are not part of the FreeRTOS code – that does not mean you have to define the functions to use the Windows port – just that you have to define any function that you actually try calling. In particular in this case I think your configASSERT() function is calling vAssertCalled(). configASSERT() is an application definition, it is not defined by FreeRTOS. Regards.
Creating new project at free RTOS
Hi thanks for replying,
three questions:
1)What about all the hook functions and demonstration functions at main.c and main_full.c
do I really need them?
2)It seems that there are other source files that I need to add in addition to what
http://www.freertos.org/Creating-a-new-FreeRTOS-project.html tells, like BlockQ.c
Can you explain me what are those files?
3)Which free RTOS files has external dependencies of application functions created on main.c
and main_full.c?
Thanks
Creating new project at free RTOS
1)What about all the hook functions and demonstration functions at main.c and main_full.c do I really need them?http://www.freertos.org/a00016.html
2)It seems that there are other source files that I need to add in addition to what http://www.freertos.org/Creating-a-new-FreeRTOS-project.html tells,I don’t think so. Your C compiler will need other functions, like main(), but FreeRTOS doesn’t.
like BlockQ.c Can you explain me what are those files?Read the documentation page for the port you are using, and http://www.freertos.org/a00102.html
3)Which free RTOS files has external dependencies of application functions created on main.c and main_full.c?None. main.c and main_full.c are not FreeRTOS files, they are just entry points into a demo application that uses FreeRTOS. Regards.
Creating new project at free RTOS
Thanks for replying
Unfortuenatley that’s not help.
I just want to create new project, and I always get link errors,
when I get over one error, I get 10 more.
It’s a shame that creating new project is so complicating.
I hope that in real embedded circuits it is not the same.
Creating new project at free RTOS
There is no difference between using the Windows port and a real
embedded target.
1) Start with a working project that builds and runs in your environment.
2) Add in the very few FreeRTOS source files as per the instructions on
the web, along with a minimal FreeRTOSConfig.h file. Ensure the
FreeRTOS include path and the path to FreeRTOSConfig.h is in the
compiler’s include path. Start with something simple, not something
that is taken from an example that is described as “comprehensive” in
the documentation, as you have done. Read the documentation so you know
how to strip back FreeRTOSConfig.h.
3) Ensure the application still builds.
4) Start using the API you have just made available in your application.
I think most of your problems are C compiling and linking problems, not
FreeRTOS problems. For example, if I were doing this and got a linker
problem telling me vAssertCalled() was not defined I would have taken
the following steps.
1) grep’ed the directory to see where vAssertCalled() was used, and
noticed it was called by the configASSERT() macro.
2) Searched the FreeRTOS website or googled configASSERT() and seen it
was optional and defined by the user not FreeRTOS, so just removed the
definition or commented it out for later.
3) Re-compiled and seen that the linker error no longer happened, and
moved on to investigate the next linker error.
I would have expected it to take me about 5 minutes to take the above
corrective steps.
Your linker errors are nothing to do with FreeRTOS per se.
Regards.
Creating new project at free RTOS
Hi
I really don’t know what to do anymore
I tried everything you told me, still nothing
please see the attached file
test.c is the main file
Thanks
Creating new project at free RTOS
Try
- removing all the header file inclusions other than FreeRTOS.h and task.h
- removing the source files that start trc
Creating new project at free RTOS
Hi
I have attached my project
thanks
Creating new project at free RTOS
The project you attached does not include any header files.
Creating new project at free RTOS
Hi
I have kept to analyze, until I got link errors
of win API functions,
so after checking I have noticed that the the linker of win32 winmm was
not defined for the project, after defining the problem was solved.