[NTLK] Designing an Internal WiFi Board for MP2x00

[Jake Bordens]

The module takes AT commands, so there's an AT command to set the WiFi 
network and password. For example:

	AT+iWLSI=My_WiFi
	AT+iWST0=4
	AT+iWPP0=<WPA2 passphrase>

The module can store up to 10 networks, and has other useful modes and 
commands.  This can be done in a connection script in NIE's internet 
setup, or once using something like PT100.  Once the PPP connection is 
established, the module opens a port that you can telnet into and issue 
additional AT commands as well.

One important bit of one-time config, which is not well documented in the 
ConnectOne documentation is that you need to tell the module which network 
is the WAN:

	AT+iWANS=1


In the NIE Serial Connection Script, your last command is:

	AT+iSPPP:0

And the module starts the PPP server.

					
				
			
		
	
Jake




On 2/2/15, 10:36 PM, "Tony Morrow" <gizmo1482 at gmail.com> wrote:

>Really cool project. I hope the printed boards work for you. I'm curious,
>how do you tell the WiFi module what wireless network to connect to when
>powered on?
>
>-Tony Morrow
>On Feb 2, 2015 5:13 PM, "Jake Bordens" <jake at allaboutjake.com> wrote:
>
>>
>> So I've been slowly working towards a PCB design for an internal wifi
>> board.  Again, the WiReach wifi module has a PPP server on board so that
>> Newton Internet Enabler can "dial up" to a wifi modern wifi network with
>> modern encryption settings.  Max speed seems to be 119200 baud.
>>
>> I am not a hardware engineer (but I know just enough to be dangerous) 
>>so I
>> posted my current thoughts at the following URL:
>>
>> 
>>http://retronewton.blogspot.com/2015/02/i-have-been-triangulating-on-fina
>>l-
>> pcb.html
>>
>> If there are any EE's in on the list that would care to set me straight
>> and tell me how horrible this is, it would be appreciated.  In all, the
>> board is pretty simple, a 3.3v regulator to power the module off the
>> battery leads, the module itself, some decoupling, and some connections 
>>to
>> the Serial3.  Not really complicated.
>>
>> Also if anyone has any "real" measurements for the PCB mount points and
>> connector placement, I'd be interested.  My current design is 6 
>>iterations
>> of trial and error.
>>
>> The next challenge will be finding a good antenna solution.  I have a
>> bunch of antennas on order and I intend to try out some ideas.
>>
>> Thanks for any input.
>>
>> Jake
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