修正iis驱动

bsp/imxrt1052-evk/Libraries/drivers/fsl_sai_edma.c

@@ -99,7 +99,7 @@ static void SAI_TxEDMACallback(edma_handle_t *handle, void *userData, bool done,
     saiHandle->queueDriver = (saiHandle->queueDriver + 1) % SAI_XFER_QUEUE_SIZE;
 
     /* If all data finished, just stop the transfer */
-    if (saiHandle->saiQueue[saiHandle->queueDriver].data == NULL)
+    if (saiHandle->saiQueue[saiHandle->queueDriver].dataSize == 0)
     {
         /* Disable DMA enable bit */
         SAI_TxEnableDMA(privHandle->base, kSAI_FIFORequestDMAEnable, false);

bsp/imxrt1052-evk/drivers/drv_codec.c

@@ -347,7 +347,8 @@ static rt_size_t icodec_transmit(struct rt_audio_device *audio, const void *writ
 
         xfer.data = (uint8_t *)writeBuf;
         xfer.dataSize = size;
-        SAI_TransferSendEDMA(icodec->sai, &icodec->txHandle, &xfer);
+        if (SAI_TransferSendEDMA(icodec->sai, &icodec->txHandle, &xfer) != kStatus_Success)
+            return 0;
 
         return size;
     }