CYBT-343026 SPP Tx completed missing message

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sylvain_77176
Level 2
Level 2
First solution authored 5 replies posted 25 sign-ins

Hello infineon community,

I am using a CYBT-343026 bluetooth module and transmiting data with SPP protocol. I have a problem that seems to be due to Bluetooth. It is the first time I am using a bluetooth device in a project and I hope someone can help me.

My configuration is :

- UC<----HCI-PROTOCOL (over UART)----->CYBT-343026<----SPP----->PC

- flow control activated on CYBT-343026

The UC is sending 232 bytes each time the CYBT-343026 is sending TX completed frame and there are 2 different PC softwares.

1) The first PC software is not using a lot of CPU ressources and the transmission in this case  is done very fast as you can see below :

sylvain_77176_2-1677512740980.png

ZOOM on interval between two SPP Tx completed frame:

sylvain_77176_5-1677513408589.png

But sometime the transmission is interrupted and the root cause is the SPP TX completed frame is never send by CYBT-343026.

sylvain_77176_0-1677513837582.png

 

2) The second PC software is using more ressource and the consequence is the data transmission is slower  in this case the transmission of data is always perform without error.

sylvain_77176_1-1677512448461.png

Is anyone having a solution to avoid SPP TX completed frame interruption ?

Thank you in advance for your help

Best regards

 

 

 

 

 

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1 Solution
Sven_Wang
Moderator
Moderator
Moderator
250 sign-ins 50 solutions authored 25 solutions authored

Hi

Could you please share your test environment as detailed as possible? Such as PC tools, FW source, how to detect the logical pins, etc. I will try to reproduce the phenomenon.

 

Thanks

Sven

 

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1 Reply
Sven_Wang
Moderator
Moderator
Moderator
250 sign-ins 50 solutions authored 25 solutions authored

Hi

Could you please share your test environment as detailed as possible? Such as PC tools, FW source, how to detect the logical pins, etc. I will try to reproduce the phenomenon.

 

Thanks

Sven

 

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