add method peek data.

datalink814_ge/src/phy_ctrl/phy_ctrl.c

@@ -786,17 +786,20 @@ void Phy_GetLastSlotStartTimeStamp(PHY_INST* instPtr, TIME_WORD* slotStart) {
 
 /*****************************************************************************/
 /**
- * @brief   Get received data (base on PL Record), store it to data buffer.
+ * @brief   Copy ans store the received data, if received data valid.
  *
  * @param   instPtr  a pointer to physical layer control instance.
  *
- * @return  SUCCESS
- * 			FAILURE	last frame type cannot be recognized.
+ * @return  NONE
  *
  ******************************************************************************/
-void Phy_RetrieveRecvData(PHY_INST* instPtr, uint8_t* dataBuff) {
+void Phy_PeekRecvData(PHY_INST* instPtr, uint8_t* dataBuff) {
 	ASSERT(instPtr != NULL);
 	ASSERT(dataBuff != NULL);
+	if (instPtr->isValid == false)
+	{
+		return;
+	}
 	uint32_t frameLen, offset;
 
 	frameLen = (PhyRead(instPtr, RECVDATA_STATE) & RECVDATA_STATE_LEN_MASK) >> RECVDATA_STATE_LEN_SHIFT;
@@ -804,3 +807,24 @@ void Phy_RetrieveRecvData(PHY_INST* instPtr, uint8_t* dataBuff) {
 	
 	memcpy(dataBuff, (uint8_t*)(instPtr->recvDataAddr + offset), frameLen);
 }
+
+/*****************************************************************************/
+/**
+ * @brief   Get the received data (if valid), store it to data buffer.
+ * 			and clear data valid flag.
+ *
+ * @param   instPtr  a pointer to physical layer control instance.
+ *
+ * @return  NONE
+ *
+ ******************************************************************************/
+void Phy_RetrieveRecvData(PHY_INST* instPtr, uint8_t* dataBuff) {
+	ASSERT(instPtr != NULL);
+	ASSERT(dataBuff != NULL);
+	if (instPtr->isValid == false)
+	{
+		return;
+	}
+	Phy_RetrievePeekData(instPtr, dataBuff);
+	instPtr->isValid = false;
+}