azeng 发表于 2019-10-31 09:30
这个取决于你移植的系统使用的heap实现。 heap_1.c heap_2.c heap_3.c heap_4.c ，楼主用的哪个呢？ ...

我用的是heap4

ma_xiang 发表于 2019-10-31 09:38
我用的是heap4

/*
* A sample implementation of pvPortMalloc() and vPortFree() that combines
* (coalescences) adjacent memory blocks as they are freed, and in so doing
* limits memory fragmentation.
*
* See heap_1.c, heap_2.c and heap_3.c for alternative implementations, and the
* memory management pages of http://www.FreeRTOS.org for more information.
*/


/* Allocate the memory for the heap. */
#if( configAPPLICATION_ALLOCATED_HEAP == 1 )
        /* The application writer has already defined the array used for the RTOS
        heap - probably so it can be placed in a special segment or address. */
        extern uint8_t ucHeap[ configTOTAL_HEAP_SIZE ];
#else
        static uint8_t ucHeap[ configTOTAL_HEAP_SIZE ];
#endif /* configAPPLICATION_ALLOCATED_HEAP */


都是开源的了，啥问题都是可以找到嘛，既不是heap也不是stack，是个静态数组。

azeng 发表于 2019-10-31 09:53
/*
* A sample implementation of pvPortMalloc() and vPortFree() that combines
* (coalescences) ad ...

好的 谢谢  

ma_xiang 发表于 2019-10-31 08:10
感谢，请问图4中freertos申请的stack和heap占的是单片机哪部分空间，应该不是图3中规划出的空间吧 ...

heap4是不会用startup里面定义的空间的，startup里面的heap是C库自己的malloc函数所需的空间