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在SDK的wifi_audio_app例程中,dma中断状态是什么



在pcmhandler.c中的这个函数里

void DMAPingPongCompleteAppCB_opt()
{
unsigned long ulPrimaryIndexTx = 0x4;
unsigned long ulAltIndexTx = 0x24;
unsigned long ulPrimaryIndexRx = 0x5;
unsigned long ulAltIndexRx = 0x25;
tDMAControlTable *pControlTable;

if(MAP_uDMAIntStatus() & 0x00000010)
{

。。。。。

}

if(MAP_uDMAIntStatus() & 0x00000020)
{

。。。。。

}

}

0x00000010和0x00000020代表什么