CC3100 to CC3100 in P2P Mode.

Vivek Ratan

Other Parts Discussed in Thread: MSP430F5529, CC3100, CC3200

Hi,

I have 2 CC3100 boards. I want to connect them with each other in P2P mode . I am using them with MSP430F5529 launch pad.

After connecting I have to send a character from one board to other board and toggle a led on other board on reception.

As of now I am referring to P2P example code. So, what all changes I need to make in code for connecting with each other and sending the character?

Thanks in advance.

over 10 years ago

0 Glenn Vassallo over 10 years ago

Guru 21435 points

You will need to set up one of your devices as the Group Owner and the other as a Client. There is also negotiate mode which has the devices negaotiate who will be the group owner and client, I believe this is how the example is currently coded, but am I unsure whether this will be sufficient for your application.

More details are included in the documentation for this example which can be found in the doc/examples folder of the SDK.

Glenn.

0 Vivek Ratan over 10 years ago in reply to Glenn Vassallo

Intellectual 345 points

Hi Glenn,

Thanks for your reply.

As of now I have put both the devices in negotiate mode. But for other device to auto connect with the first device, I think I need to hardcode MAC Id or IP of first deice in code for second device? Is it so or it can auto connect with the group owner ?

As of now I am referring to P2P example provided in SDK.

Regards,
Vivek

0 Glenn Vassallo over 10 years ago in reply to Vivek Ratan

Guru 21435 points

Vivek Ratan said:
But for other device to auto connect with the first device

If by other device you mean you want the CC3100 to connect with each other and then add another device, then this is not currently supported as the CC3100 only supports 1 connection (even the Group Owner). If you need more than 1 connection between multiple devices that include a CC3100 device, I believe this will work if you have the other device as the Group Owner (I have not tested this however).

If you are just attempted to connect 2 CC3100 with each other, try setting one as Group Owner and the other as Client and see what result you get.

Glenn.

0 Apurwa over 10 years ago in reply to Glenn Vassallo

Intellectual 270 points

Hi Glenn,

Thanks for your reply.

Yes I am trying to connect 2 CC3100 devices as of now. Okay I will put one in Group owner and other in Client mode as you suggested.
I still have few more doubts :

1.Can I monitor the UART ports of the CC3100 at the tera term or any other terminal using USB connector provided. I want to mean if my CC3100 is transmitting or receiving any packet , I want to see them at the terminal.

2. P2P example provided in the SDK is suitable for this application or shall I refer to any other example.

Regards,
Vivek

0 Glenn Vassallo over 10 years ago in reply to Apurwa

Guru 21435 points

Apurwa said:
1.Can I monitor the UART ports of the CC3100 at the tera term or any other terminal using USB connector provided. I want to mean if my CC3100 is transmitting or receiving any packet , I want to see them at the terminal.

You would do this via your Host MCU, which is the MSP430F5529 .

Apurwa said:
2. P2P example provided in the SDK is suitable for this application or shall I refer to any other example.

The p2p example is the example to be working with.

Glenn.

0 Vivek Ratan over 10 years ago in reply to Glenn Vassallo

Intellectual 345 points

Hi Glenn,

Thanks for your reply.

Regards,
Vivek

0 myla lova kiranvarma over 10 years ago in reply to Vivek Ratan

Intellectual 285 points

Hello TI, I am trying to transfer a text file by using two cc3100 booster pack. Is It possible?

0 Glenn Vassallo over 10 years ago in reply to myla lova kiranvarma

Guru 21435 points

Hi Myla,

As your question is unrelated to the question you have posted in. Can you please create a new post so that we may be able to assist.

Glenn.

0 Glenn Vassallo over 10 years ago in reply to Vivek Ratan

Guru 21435 points

Vivek,

Please close this post by marking one of the posts as Answered.

Glenn.

0 Ankur Baranwal over 10 years ago in reply to Vivek Ratan

TI__Mastermind 26205 points

Hi Vivek,

If you want to connect 2 CC3100 devices using wifi direct you will need to modify the following macro in the P2P example provided in the SDK:

For first CC3100 Device:
#define P2P_REMOTE_DEVICE "<second device name>" /* this is the remote device name which which the connection will be attempted */
#define P2P_DEVICE_NAME "<first device name>"

For Second CC3100 Device:
#define P2P_REMOTE_DEVICE "<first device name>" /*this is the remote device name which which the connection will be attempted */
#define P2P_DEVICE_NAME "<second device name>"

Regards,
Ankur

0 Vivek Ratan over 10 years ago in reply to Ankur Baranwal

Intellectual 345 points

Hi Ankur,

Thanks for your reply.

To connect two CC3100 devices, I will hard code remote device names as you suggested. But still I have few more doubts.

1. I should configure both CC3100 devices in Client- GO mode or Negotiate mode ?
2. Can I see data being received by CC3100 devices on terminal using USB port provided on MSP430F5529 lp ?

Regards,
Vivek

0 Ankur Baranwal over 10 years ago in reply to Vivek Ratan

TI__Mastermind 26205 points

Hi Vivek,

1. Example is configured to use Negotiate mode where the device will decide their role (GO/CLient) while connecting. Alternatively you can configure one as GO and other as Client.
2. The command line interface is enabled on MSP430F5529LP and you can use CLI_Write() function to dump the data on the console. Please refer to the example.

Regards,
Ankur

0 Vivek Ratan over 10 years ago in reply to Ankur Baranwal

Intellectual 345 points

Hi Ankur,

Thanks for your reply.
I have one more doubt.

While in peer to peer communication data/packet is received by CC3100 in which buffer and which function takes care of it ?

Regards,
Vivek

0 anishkumar singh over 10 years ago in reply to Vivek Ratan

Expert 1060 points

Open p2p/main.c, go to line no 405.

405: Status = sl_Recv(newSockID, uBuf.BsdBuf, BUF_SIZE, 0);

I hope this is what you want?

0 myla lova kiranvarma over 10 years ago in reply to Ankur Baranwal

Intellectual 285 points

Hi Ankur!

I configured the two CC3100 device as you said

#define P2P_REMOTE_DEVICE "P2P_Second_Device"
#define P2P_DEVICE_NAME "P2P_First_Device"

#define P2P_REMOTE_DEVICE "P2P_First_Device"
#define P2P_DEVICE_NAME "P2P_Second_Device"

And I configured one as SL_P2P_ROLE_GROUP_OWNER and other as SL_P2P_ROLE_CLIENT

But connection was not established!

one more question:

How to get the IP address of the CC3100 using tiva c code and to be printed on the Terminal window.

0 myla lova kiranvarma over 10 years ago in reply to myla lova kiranvarma

Intellectual 285 points

I tried P2P connection with CC3100 and Iperf app in mobile. It was succesful. But I am unable to connect two CC3100 boards.
I found that, the sample program acts like server in P2P, I think i required a P2P client program to connect. How do i write the Client program for CC3100 or what are the changes i need to do in the P2P server program. By the way i am using CC3100 with Tiva C.

0 Salvatorre over 9 years ago in reply to myla lova kiranvarma

Expert 1460 points

Was there ever an answer to this last comment about the client code? Did it get moved to another thread? Thanks.

0 myla lova kiranvarma over 8 years ago in reply to Salvatorre

Intellectual 285 points

sry about the very late reply!

i was successful to communicate between two cc3200 devices in P2P mode. off course i made it in march 2014.

thank for all TI community members

0 sagar minchnal over 8 years ago in reply to Ankur Baranwal

Prodigy 170 points

What about the id , will it be remain same for both device?

0 sagar minchnal over 8 years ago in reply to Ankur Baranwal

Prodigy 170 points

Hi ankur
I tried the changes which you have suggested but still the device which i configured as client is displaying failed to establish the connection .
Is ther any other changes i need to make to connection happen.

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