static void DNSPutROMString(ROM BYTE* String)
{
ROM BYTE *RightPtr;
BYTE i;
BYTE Len;
RightPtr = String;
while(1)
{
do
{
i = *RightPtr++;
} while((i != 0x00u) && (i != '.') && (i != '/') && (i != ',') && (i != '>'));
// Put the length and data
// Also, skip over the '.' in the input string
Len = (BYTE)(RightPtr-String-1);
UDPPut(Len);
String += UDPPutROMArray(String, Len) + 1;
if(i == 0x00u || i == '/' || i == ',' || i == '>')
break;
}
// Put the string terminator character (zero length label)
UDPPut(0x00);
}
/*****************************************************************************
Function:
void UDPPerformanceTask(void)
Summary:
Tests the transmit performance of the UDP module.
Description:
This function tests the transmit performance of the UDP module. At boot,
this module will transmit 1024 large UDP broadcast packets of 1024 bytes
each. Using a packet sniffer, one can determine how long this process
takes and calculate the transmit rate of the stack. This function tests
true UDP performance in that it will open a socket, transmit one packet,
and close the socket for each loop. After this initial transmission, the
module can be re-enabled by holding button 3.
This function is particularly useful after development to determine the
impact of your application code on the stack's performance. A before and
after comparison will indicate if your application is unacceptably
blocking the processor or taking too long to execute.
Precondition:
UDP is initialized.
Parameters:
None
Returns:
None
***************************************************************************/
void UDPPerformanceTask(void)
{
UDP_SOCKET MySocket;
NODE_INFO Remote;
WORD wTemp;
static DWORD dwCounter = 1;
if((BUTTON3_IO) && (dwCounter > 1024))
return;
// Suppress transmissions if we don't have an Ethernet link so our counter starts correctly at 0x00000001
if(!MACIsLinked())
return;
// Set the socket's destination to be a broadcast over our IP
// subnet
// Set the MAC destination to be a broadcast
memset(&Remote, 0xFF, sizeof(Remote));
// Open a UDP socket for outbound transmission
MySocket = UDPOpen(0, &Remote, PERFORMANCE_PORT);
// Abort operation if no UDP sockets are available
// If this ever happens, incrementing MAX_UDP_SOCKETS in
// StackTsk.h may help (at the expense of more global memory
// resources).
if(MySocket == INVALID_UDP_SOCKET)
return;
// Make certain the socket can be written to
if(!UDPIsPutReady(MySocket))
{
UDPClose(MySocket);
return;
}
// Put counter value into first 4 bytes of the packet
UDPPutArray((BYTE*)&dwCounter, sizeof(dwCounter));
dwCounter++;
wTemp = UDPPutROMArray((ROM BYTE*)
"The quick brown fox tried to jump over the yellow dog. Unfortunately, the yellow dog stood up while the fox was in mid-jump. As a result, the two collided. Then, the dog, being the omnivore that it is, ate the quick brown fox. This line is 256 bytes.\r\n"
"The quick brown fox tried to jump over the yellow dog. Unfortunately, the yellow dog stood up while the fox was in mid-jump. As a result, the two collided. Then, the dog, being the omnivore that it is, ate the quick brown fox. This line is 256 bytes.\r\n"
"The quick brown fox tried to jump over the yellow dog. Unfortunately, the yellow dog stood up while the fox was in mid-jump. As a result, the two collided. Then, the dog, being the omnivore that it is, ate the quick brown fox. This line is 256 bytes.\r\n"
"The quick brown fox tried to jump over the yellow dog. Unfortunately, the yellow dog stood up while the fox was in mid-jump. As a result, the two collided. Then, the dog, being the omnivore that it is, ate the quick brown fox. This line is 252b. \r\n", 1020);
// Send the packet
UDPFlush();
// Close the socket so it can be used by other modules
UDPClose(MySocket);
}
ROM BYTE* UDPPutROMString(ROM BYTE *strData)
{
return strData + UDPPutROMArray(strData, strlenpgm((ROM char*)strData));
}
ROM uint8_t* UDPPutROMString(ROM uint8_t *strData)
{
return strData + UDPPutROMArray(strData, strlenpgm((ROM char*)strData));
}
