/**
*
* The entry point for the EmacLite Ping reply example in polled mode.
*
* @param DeviceId is device ID of the XEmacLite Device.
*
* @return XST_FAILURE to indicate failure, otherwise XST_SUCCESS is
* returned.
*
* @note This is in a continuous loop generating a specified number of
* ping replies as defined by MAX_PING_REPLIES.
*
******************************************************************************/
int EmacLitePingReplyExample(u16 DeviceId)
{
int Status;
XEmacLite *EmacLiteInstPtr = &EmacLiteInstance;
XEmacLite_Config *ConfigPtr;
NumOfPingReplies = 0;
/*
* Initialize the EmacLite device.
*/
ConfigPtr = XEmacLite_LookupConfig(DeviceId);
if (ConfigPtr == NULL) {
return XST_FAILURE;
}
Status = XEmacLite_CfgInitialize(EmacLiteInstPtr,
ConfigPtr,
ConfigPtr->BaseAddress);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Set the MAC address.
*/
XEmacLite_SetMacAddress(EmacLiteInstPtr, LocalMacAddr);
/*
* Empty any existing receive frames.
*/
XEmacLite_FlushReceive(EmacLiteInstPtr);
while (1) {
/*
* Wait for a Receive packet.
*/
while (RecvFrameLength == 0) {
RecvFrameLength = XEmacLite_Recv(EmacLiteInstPtr,
(u8 *)RxFrame);
}
/*
* Process the Receive frame.
*/
ProcessRecvFrame(EmacLiteInstPtr);
RecvFrameLength = 0;
/*
* If the number of ping replies sent is equal to that
* specified by the user then exit out of this loop.
*/
if (NumOfPingReplies == MAX_PING_REPLIES) {
return XST_SUCCESS;
}
}
}
/**
*
* The entry point for the EmacLite driver to ping request example in polled
* mode. This function will generate specified number of request packets as
* defined in "NUM_OF_PING_REQ_PKTS.
*
* @param DeviceId is device ID of the XEmacLite Device.
*
* @return XST_FAILURE to indicate failure, otherwise it will return
* XST_SUCCESS.
*
* @note None.
*
******************************************************************************/
static int EmacLitePingReqExample(u16 DeviceId)
{
int Status;
int Index;
int Count;
int EchoReplyStatus;
XEmacLite_Config *ConfigPtr;
XEmacLite *EmacLiteInstPtr = &EmacLiteInstance;
SeqNum = 0;
RecvFrameLength = 0;
EchoReplyStatus = XST_FAILURE;
NumOfPingReqPkts = NUM_OF_PING_REQ_PKTS;
/*
* Initialize the EmacLite device.
*/
ConfigPtr = XEmacLite_LookupConfig(DeviceId);
if (ConfigPtr == NULL) {
return XST_FAILURE;
}
Status = XEmacLite_CfgInitialize(EmacLiteInstPtr,
ConfigPtr,
ConfigPtr->BaseAddress);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Set the MAC address.
*/
XEmacLite_SetMacAddress(EmacLiteInstPtr, LocalMacAddr);
/*
* Empty any existing receive frames.
*/
XEmacLite_FlushReceive(EmacLiteInstPtr);
while (NumOfPingReqPkts--) {
/*
* Introduce delay.
*/
Count = DELAY;
while (Count--) {
}
/*
* Send an ARP or an ICMP packet based on receive packet.
*/
if (SeqNum == 0) {
SendArpReqFrame(EmacLiteInstPtr);
} else {
SendEchoReqFrame(EmacLiteInstPtr);
}
/*
* Check next 10 packets for the correct reply.
*/
Index = NUM_RX_PACK_CHECK_REQ;
while (Index--) {
/*
* Wait for a Receive packet.
*/
Count = NUM_PACK_CHECK_RX_PACK;
while (RecvFrameLength == 0) {
RecvFrameLength = XEmacLite_Recv(
EmacLiteInstPtr,
(u8 *)RxFrame);
/*
* To avoid infinite loop when no packet is
* received.
*/
if (Count-- == 0) {
break;
}
}
/*
* Process the Receive frame.
*/
if (RecvFrameLength != 0) {
EchoReplyStatus = ProcessRecvFrame(
EmacLiteInstPtr);
}
RecvFrameLength = 0;
/*
* Comes out of loop when an echo reply packet is
* received.
*/
if (EchoReplyStatus == XST_SUCCESS) {
break;
}
}
/*
* If no echo reply packet is received, it reports
* request timed out.
*/
if (EchoReplyStatus == XST_FAILURE) {
xil_printf("Packet No: %d",
NUM_OF_PING_REQ_PKTS - NumOfPingReqPkts);
xil_printf(" Seq NO %d Request timed out\r\n",
SeqNum);
}
}
return XST_SUCCESS;
}
