Specificaitons of CC3100/CC3200

hamada said:

1) Do you have any data about the communication distance?

Wifi is a standard and the rules and factors affecting communication distance applies to all wifi device. See, link below.

http://compnetworking.about.com/cs/wirelessproducts/f/wifirange.htm

- kel

Hi, kel

Thank you for reply.

I was helpful.

 

Could you tell me if there are those who can see (2), (3), (4)?

Also, please let an additional check.

 

Best Regards,

hamada

 

 

 

 

 

 

Hamada,

(2) This throughput was measured in TI testing laboratories at application layer under optimal conditions. It means for example  that the air was clean, application driving the data was not limiting the process and for TCP the round trip is minimal.

(3) What do you mean encryption process? Which layer? AP security will not impact throughput. Transport layer security (SSL/TLS) will impact the throughput for TCP.

(4) This is true, you will need to issue many sl_Send commands. However, the overhead of tis command is minimal.

Ben

Ben,

Re: #3, I am being asked about the impact of encryption on UDP and TCP data rates.  Is this information available?

John

John,

I am not sure which encryption are you referring to. AP security impact on TP is negligible. SSL/TLS impact only TCP.

Ben

Hi ,

it is possible to know the keys that the board using for the encryption of the datas ?
or better it is possible to remove the encryption ? ( there is some function for doing it ?)

I want to see the packets that I send on wireshark.. I need to know the keys or removing the keys..

Best Regards

Luca Rossini

As Ben has said, there will be no encryption on your UDP packet.....what makes you think things are encrypted? I really think you need to look at this from the start and possibly perform some experiments with a UDP client to test your WireShark setup

Glenn.

Hi ,

I thought that it were encrypted because I see the 802.11 packets on wireshark with the title : encryption packets !!!!!!!!!!!!

You are sure about what you said before ?

Are you sure these packets come from the device?

I assume you are using WireShark on a PC, if so, how could the PC use the packets if they were encrypted?

How about trying Microsoft Message Analyzer - www.thewindowsclub.com/microsoft-message-analyzer or Windows Network Monitor

I have sent UDP packets from my device to a PC and viewed in Network Monitor many times..

Glenn.

Hi ,

I am using wireshark with airpcap usb ( two airpcap).

The android application on the smartphone is ok because I can see the data on a file.. I tried also to change channel ( from 1 to 13 ) or set a new channel with

_u32 newChannel = 12; // range is 1-13
sl_SetSockOpt(iSockID, SL_SOL_SOCKET, SL_SO_CHANGE_CHANNEL, &newChannel, sizeof(newChannel));

But I can see nothing..
I don't know why.. I can try with your sniffer.. Maybe I have some problems in the configurations of wireshark..

I think we now have the issue....the airpcap looks like it is designed for looking at lower level protocol traffic.....and not for analyzing transport layer or above. Not place to visit would be airpcap to see if you can achieve what you want with their technology.

Alternatively you just need to use your standard Wi-Fi adapter that comes with your laptop or PC and trace the packets that you send to the PC.

If you are wanting to see Wireless traffic that is not being sent to the PC, then I am not sure you can....the way it was done in the past was to use a hub (i.e. not a switch) and make sure the packet sniffer is setup in promiscuous mode. Not sure if or how you can do any of this with Wi-Fi.

Glenn.

Hi ,

but if the traffic is not encrypted why I can't see ??
You were sure but before talking it is better to think.. Because Obviously I can see the packets in my smartphone but I can't on my pc when it is in the centre of the path..

Best Regards

Luca

Excuse me? Is this how you thank someone volunteering their time to assist!

Best of luck, perhaps someone else will want to assist you further.

Glenn.

I have been polite but in your answers seemed that i was not expert in each thing.. (After two month that I try to see this packets in wireshark ).