I use heap4.c for my system memory management. now, I found that system halt some times and printf it halt in heap4.c line 281 configASSERT( ( pxLink->xBlockSize & xBlockAllocatedBit ) != 0 ); it seems that the system try to free memory which is not actually allocated.
I wander to know in which case it will happen ? I check my code, pvPortMalloc and vPortFree are always implement in pair....
thank you in advanced.
pvPortMalloc and vPortFree are always implement in pair...
That would be one explanation, calling vPortFree() too often.
Another explanation would be if you overwrite allocated memory. You asked for 1024 bytes and your code is using just a few more bytes.
You can also inspect
pxLink->xBlockSize and see if it has a reasonable value.
Anyway, it looks like your code is causing corruption of the heap space, somewhere.