Andy240881 / Embedded_OS_Lab4-2_P76091307

Embedded_OS_Lab4-2_P76091307

Step 1(show free block list in console)

• Implement the vPrintFreeList function in heap_2.c
• Main idea

node = &xStart;
while(node != &xEnd){
    sprintf(data, "%p %0d %0d %p\n\r",node,8,node->xBlockSize,(BaseType_t)node + (BaseType_t)node->xBlockSize);
    HAL_UART_Transmit(&huart2,(uint8_t*)data,strlen(data),0xffff);
    node = node->pxNextFreeBlock;
}

Step 2(Merge free blocks in the list)

• Modifying prvInsertBlockIntoFreeList code in heap_2.c to implement memory merge.
• Before prvInsertBlockIntoFreeList insert the new block, check the FreeBlockList for mergeable blocks.
  • condition 1:pxBlockToInsert's end address is the start address of the block in FreeBlockList.
  • condition 2:pxBlockToInsert's start address is the end address of the block in FreeBlockList.