bluetooth connectivity

Leandro Souza1

Other Parts Discussed in Thread: CC2564

Hello,

I'm working with MSP-EXP430f5538 and CC2564 Bluetooth Module. I'm using Stonestreet's Bluetopia stack and running the SPPLEDemo code. I have two problems:

1) Whenever I try to exchange information between the MSP board and a cellphone there's the following case:
- I can send data from the cellphone to the CC2564 Module and read it on the PC through the TeraTerm;
- When I try to do the oposite and send data to the cellphone, the terminal just jumps to the next line, as if it sent succesfully, but no data is seen on the cellphone. I use the LESEND<ADDR><BYTE> function.

2) I need to make to simultaneous low-energy connections, but I can only get one. I would like to know if there are any changes to the code in order to connect more than one device to the CC2564.

Best Regards,

Leandro

over 9 years ago

0 Sundeep Javvaji over 9 years ago

TI__Mastermind 32615 points

Hi,

1. What is the app you are using to connect to the SPPLE on your Cellphone? what is the Cellphone you are using?

2. On the latest release, you should be able to establish two LE connections simultaneously. see http://processors.wiki.ti.com/index.php/CC256x_MSP430_Bluetopia_Basic_SPPLEDemo_APP#Multiple_SPPLE_Connections_Guide

0 Leandro Souza1 over 9 years ago in reply to Sundeep Javvaji

Prodigy 30 points

HI,

Device Iphone 5S: I'm using the app (FIND BLUE).

Device LG L90: I'm using the app developed by own company.

Thank you.

0 Raul Matos over 9 years ago in reply to Leandro Souza1

TI__Expert 5125 points

Hi Sundeep,

1) The problem appears to be related to this variable: LEContextInfo->SPPLEBufferInfo.TransmitCredits

Right after we send the SendLE command, this variable returns 0 what makes the WHILE statement in line 2468 NOT TRUE. Therefore, it will not execute the Send function properly. If we try to send the SendLE command again we get a response: "Send Currently in progress". Can you check what is going on?

2) We have just tried the new version but the same problem happens. I tried with my own phones and it doesn't work.

Just FYI, i have retried all the procedures with my computer using CCS. Leandro had previously used his computer with IAR.

Regards,
Raul Matos

0 Stonestreet One Support over 9 years ago in reply to Leandro Souza1

Mastermind 7225 points

Hi,

We currently do not have access to either of those apps so its very hard to look at the issue for us. SPPLE is not a standard Bluetooth Profile. You will have to make sure the app can use the custom UUIDs that are needed to communicate and read and write to the app.

If you want to test SPPLE communication you can try and use the SPPLE chat application for iPhone. I have a guide attached that explains how to do this, some code modifications are neccessary. Please note this app is for testing only.

Regards,

Stonestreet One.7612.Connecting to an iPhone running SPPLE Chat application MSP430 V15.doc

0 Raul Matos over 9 years ago in reply to Stonestreet One Support

TI__Expert 5125 points

Hi SSO team,

we tried the procedure, but neither I nor the customer were able to get satisfatory results. Please see the picture below:

0 Stonestreet One Support over 9 years ago in reply to Raul Matos

Mastermind 7225 points

Hi,

If you are making a connect request to a random address, it must be followed by 1 to specify that you are connecting to a random address.

For example, Connectle 00027232591C 1

Regards,

Stonestreet One.

0 Raul Matos over 9 years ago in reply to Stonestreet One Support

TI__Expert 5125 points

SSO, i just tried but i'm disconnected 2 seconds after the connection. Please see below:

0 Stonestreet One Support over 9 years ago in reply to Raul Matos

Mastermind 7225 points

Hi,

The Reason 13 indicates the disconnect was caused by the remote device. We haven't seen the immediate disconnect but you must discover and configure spple immediately after connection otherwise you will get disconnected.

Thanks,

Stonestreet One

0 Raul Matos over 9 years ago in reply to Stonestreet One Support

TI__Expert 5125 points

Great SSO.

It works!

now we have the second issue. We are not able to stablish two Low Energy connections. Any ideas on how do that?

Regards,
Raul Matos

Bluetooth®︎

Bluetooth forum

bluetooth connectivity