What should i do to add new project? When I try to add new file to existing demo files, the error occurs: "Error[Pe020]: identifier "pdTASK_CODE" is undefined D:\FreeRTOSV4.0.2\FreeRTOS\source\include\portable.h 157. On the freertos.org is written: "A preconfigured starting point for new applications - to ensure the correct development tool setup (compiler switches, debugger format, etc) it is recommended that new applications are created by modifying the existing demo projects." Can I change the name of the demo files?
There is not dependency on the file names. Provided FreeRTOS.h is included at the top of the file and BEFORE task.h, queue.h or semphr.h, then you should not get this error if modifying an existing project. I suspect there is some kind of header file dependency issue somewhere.
Try making the file almost empty, as:
void vDummyFunction( void )
vTaskDelay( 10 );
Does it compile then?
[note this file will not run unless vDummyFunction() is called from within an already created task, its just to test the compilation].