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Figure 4.
Once a suitable serial console is available and the COM
port number is known, the connection can be established.
The serial protocol uses the following parameters.
• 9600 baud
• 8 bit words
• No parity bit
• One stop bit
• No flow control
Using the serial console, establish a connection to the
device through the COM port determined above and using
the settings provided. To test the connection, simply type
“AT” followed by a CR (Carriage Return) and/or LF (Line
Feed).
If the response is “OK” then the device is connected and
ready for use.
If no response is received then this indicates a bad
connection. This can be caused by the debugger ribbon cable
being plugged in backwards, the wrong COM port number
or wrong serial protocol setup is being used.
Tip: When using some serial consoles, such as PuTTY,
local echo must be enabled to see what is being typed. Please
make sure this is enabled to avoid confusion as commands
are typed. Also, some serial consoles don’t automatically
add the CR/LF when the enter key is pressed. Double check
that this is enabled if you don’t see the “OK” response.
Sigfox ID and PAC
With the serial communication working, the ID and PAC
of the kit can be read out of the device. These two pieces of
information are necessary to register the device to be used
on the Sigfox network.
To read the ID, issue the command “AT$I=10”, and the
response will be an 8 digit hex string.
To read the PAC, issue the command “AT$I=11” and the
response will be a 16 digit hex string.
Sigfox Registration
With the ID and PAC, proceed to the following website to
register the device to the Sigfox network.
https://backend.sigfox.com/activate/ON
The Sigfox backend is the primary interface for Sigfox
developers to get information out of the Sigfox network.
Sigfox has created a YouTube playlist for instructions on
how to use the backend. Below is a link to the “The Sigfox
Backend” playlist.
https://www.youtube.com/playlist?list=PLcw1TnahFR
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For more information about the Sigfox network, please
view the “Introduction to Sigfox technology” playlist at this
link:
https://www.youtube.com/playlist?list=PLcw1TnahFR
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Application Development
Once the kit is registered to the Sigfox backend, the device
can be used to transmit messages to/from the Sigfox
network. Besides the Sigfox commands, all the other AT
commands listed in the product datasheets can be used as
well.
Here are links to the datasheets:
http://www.onsemi.com/pub/Collateral/AX−SFEU−D.PDF
http://www.onsemi.com/pub/Collateral/AX−SFUS−D.PDF
http://www.onsemi.com/pub/Collateral/AX−SFJK−D.PDF
http://www.onsemi.com/pub/Collateral/AX−SFAZ−D.PDF