3.0
NMEA2WIFI AP NETWORK
You can operate NMEA2WIFI in two modes: AP or Client Sation. In AP (Access Point) mode,
NMEA2WIFI creates a wifi network and smartphones, tablets or computers connect to this wifi network to
receive data from NMEA2WIFI. In Client Station mode, NMEA2WIFI joins an existing external wifi
network and transmits wifi data on that network. NMEA2WIFI always creates its own
AP network, even when you set NMEA2WIFI to join an existing network. In the referred to case,
NMEA2WIFI transmits data on the external existing network and uses its own network for user interaction.
In this panel, you specify the name and the password of the wifi network that smartphones,
tablets and computers should use to join this network.
When working as an Access Point, NMEA2WIFI uses IP address 192.168.4.1 and
supports DHCP. A maximum of 5 clients can join the network and are assigned
consecutive IP addresses (eg 192.168.4.2 ...). Security is WPA2-PSK. Ssid and Password can have
a maximum of 15 characters and a minimum of 4 and 8 characters, respectively.
When you need to change any setting of NMEA2WIFI you should connect to this newtork
and then write 192.168.4.1 in the navigation bar of a browser to get the page that you
are reading now.
EXTERNAL NETWORK
If you have already a working wifi network and want NMEA2WIFI to
join that network as a Client Station, you should enter here the authentication parameters that
NEMA2WIFI should use to join this existing network. Ssid and Password can have a maximum and a minimum
size of characters as before. The IP address of NMEA2WIFI on this network is assigned by
the network and appears on the corresponding text box when NMEA2WIFI gets a connection.
SERIAL PORTS BAUD RATES
The NMEA2WIFI bridge combines 2 streams of NMEA183 data appearing
at its 2 input serial ports and outputs the resulting stream on its output serial
port and/or over the wifi network. NMEA2WIFI has two input serial ports:
port #1 and port #2. It also has one serial output port, named as port #3.
The baud rate of serial input port #1 can be 4800 or 9600 baud. The
baud rates of input serial port #2 output serial port #3 is adjustable between
4800, 9600, 19200 or 38400 baud. It is important to note that if the baud rate of the
output port is inferior to those of the input ports, data may be lost.
OUTPUT SETTINGS
The combined NMEA183 data appearing at the 2 input serial ports
can be sent over the wifi network in the form of UDP packets and/or over the output serial port.
By setting WIFI ON or OFF and SERIAL ON or OFF, you can have both outputs working, just one or none. You can,
for example, uncheck the WIFI ON box if you do not need WIFI data transmission. This may be case
when you just need to combine 2 NMEA streams to appear at the output serial port #3.
You need to specify the port number for UDP communication to be used by the sender (the NMEA2WIFI bridge)
and the listeners. This port number should be chosen in the range from 1024 up to 65535. By default NMEA2WIFI uses
UDP port 2000 which is compatible with Navionics Sonar Chart Live. The IP address used for UDP communication
is the last address (X.X.X.255) in the working subnet. For example, in NMEA2WIFI AP NETWORK mode, this IP
address is 192.168.4.255 which assures that all clients in the corresponding subnet listening
to the specified UDP port will receive the packets.
SETTING OPERATING MODES
In addition to the above parameters, you have 2 radio buttons
to choose between: (i) working in AP mode only or (ii) also connect as a Client Station.
You press the SET button for NMEA2WIFI to accept the parameters in this page. If there
are no errors in the parameters, NMEA2WIFI changes its operation to the mode and settings selected.
FACTORY SETTINGS
Pressing the Set Factory Defaults button is the same as an hardware reset of the
system. The factory setting uses the following parameters:
Mode: Access Point; Ssid: NMEA2WIFI; Password: 12345678; IP Address: 192.168.4.1; UDP Port
Number: 2000; Serial Port #1 Baud Rate: 4800; Serial Ports #2 and #3 Baud Rate: 38400; Wifi Output:
ON; Serial Output: OFF.