Error #20: identifier "StaticQueue_t" is undefined

Kernel
1

Hi,

static StaticQueue_t xStaticQueue;

I couldn’t find the data type of StaticQueue_t .

The reference of this declaration:

#include “FreeRTOS.h”
#include “queue.h”
QueueHandle_t xQueueCreateStatic( UBaseType_t uxQueueLength,
UBaseType_t uxItemSize,
uint8_t *pucQueueStorageBuffer,
StaticQueue_t *pxQueueBuffer );
2

Do you have configSUPPORT_STATIC_ALLOCATION set to 1 in FreeRTOSConfig.h?

3

Hi Richard,
I have done this:

#define configSUPPORT_STATIC_ALLOCATION     1

as well as this

#define configSUPPORT_STATIC_ALLOCATION CONFIG_FREERTOS_SUPPORT_STATIC_ALLOCATION

The last one I got it by search engine.
None of them solved the error.

4

Are you sure that the correct FreeRTOSConfig.h is getting picked? In the file where you get this identifier missing error, add the following code:

#if( configSUPPORT_STATIC_ALLOCATION == 1 )
    #error Test to see if static allocation is enabled.
#endif

If the above #error is triggered, then we know that configSUPPORT_STATIC_ALLOCATION is configured correctly.

Thanks.

5

Thanks aggarg.
I updated from version 8 to version 10 and I added the callback function code from FreeRTOS website. Then I was able to compile completely and the program worked as expected.
The callback function:

void vApplicationGetIdleTaskMemory(,,..){.....}