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5.4.
U2S (UDP to Serial)
U2S mode allows for UDP communication.
In UDP mode, data are transmitted in blocks, which requires dividing data
coming to the serial port into blocks before transmitting data. A procedure for
dividing data into blocks is as follows:
If data of pre-specified bytes [WATER MARK] comes to the serial port of the
ezTCP or if a specified period of time [TIMEOUT] elapses after first data reception,
all data received for the same period is recognized as one block which is then
transmitted to the UDP. The [TIMEOUT] unit is 10ms. If [TIMEOUT] is set to 2,
the time period is between 20ms and 30ms.
Since UDP communication does not require a connection procedure, the user can
establish N-to-M communication via multicast and broadcast.
In U2S mode, ezTCP doesn’t support DHCP.
