Dear NXP,
I created a new FREERTOS project from example for S32K144 in the SDK version 2.9.0:
The example compiles and runs fine, however I would like to use static memory allocation, therefore I change this setting in the Processor Expert:
This way a few new lines are added to the generated FreeRTOSConfig.h:
When I try to compile the code, the following error occurs:
There is a workaround for this (adding these few lines into the generated FreeRTOSConfig.h), which works, but it is not nice and gives warning messages while compiling:
This way the code is working and it compiles. Is there a better solution for overcome this issue?
Thank you very much.
Hi tamaslorincz,
There is indeed a defect in the Processor Expert component for FreeRTOS, which will be fixed for future releases.
Meanwhile, please use the following workaround for your project:
1. Check only the "Dynamic allocation" scheme Processor Expert component, and override with the "User Settings" option.
In the FreeRTOS PEx component, check only the "Dynamic memory allocation" checkbox:
Then, in "User Settings" tab, click on the "Definitions" button (with three dots):
In the window, add these lines:
/* Additional settings can be defined in the property Settings > User settings > Definitions of the FreeRTOS component */
#undef configSUPPORT_DYNAMIC_ALLOCATION
#undef configSUPPORT_STATIC_ALLOCATION#define configSUPPORT_DYNAMIC_ALLOCATION 0
#define configSUPPORT_STATIC_ALLOCATION 1
Now, the static allocation will be used and dynamic allocation will be disabled. There is one more step to be done:
2. Exclude "heap_x.c" file from build
The Pex component will still link a heap_x.c file to the project at this point. You will need to exclude it by selecting it, right click -> Resource Configurations -> "Exclude from Build..." and select all options.
After this, the file should appear slightly greyed out and with a different icon, as below:
At this point, the setup is complete.
If you will need to use dynamic memory allocation as well, you will need to revert step 2 and remove the lines concerning configSUPPORT_DYNAMIC_ALLOCATION from the "User Settings" window.
Best regards,
Ovidiu
Hi tamaslorincz,
There is indeed a defect in the Processor Expert component for FreeRTOS, which will be fixed for future releases.
Meanwhile, please use the following workaround for your project:
1. Check only the "Dynamic allocation" scheme Processor Expert component, and override with the "User Settings" option.
In the FreeRTOS PEx component, check only the "Dynamic memory allocation" checkbox:
Then, in "User Settings" tab, click on the "Definitions" button (with three dots):
In the window, add these lines:
/* Additional settings can be defined in the property Settings > User settings > Definitions of the FreeRTOS component */
#undef configSUPPORT_DYNAMIC_ALLOCATION
#undef configSUPPORT_STATIC_ALLOCATION#define configSUPPORT_DYNAMIC_ALLOCATION 0
#define configSUPPORT_STATIC_ALLOCATION 1
Now, the static allocation will be used and dynamic allocation will be disabled. There is one more step to be done:
2. Exclude "heap_x.c" file from build
The Pex component will still link a heap_x.c file to the project at this point. You will need to exclude it by selecting it, right click -> Resource Configurations -> "Exclude from Build..." and select all options.
After this, the file should appear slightly greyed out and with a different icon, as below:
At this point, the setup is complete.
If you will need to use dynamic memory allocation as well, you will need to revert step 2 and remove the lines concerning configSUPPORT_DYNAMIC_ALLOCATION from the "User Settings" window.
Best regards,
Ovidiu
