BTPS_MEMORY_BUFFER_SIZE allocation for SPP demo for 7 comport

Sravan Janamaddi

Hi,

In my application with TIVA C mcu, I want to use 7 SPP comports and I will make the CC256x module as master. My program is working fine for 6 comports, But when when I use 7 th comport I am facing issues.

Sometimes BTLE stops advertising. And in logs i found "Malloc Failed 4092"

I want to know on what basis memory can be allocated for BT kernel ?

In SPPLE sample demo it was given 6 KB. I increased to 24KB for 7 comports but I am facing issues. Before making any trail and error method I want a specific reason on how to allocate memory properly for Bluetopia kernel.

Thank you

Sravan

over 9 years ago

0 Joseph Gigi over 9 years ago

TI__Guru* 85400 points

Hi Sravan,

"Malloc Failed 4092" would indicate that you want to allocate 4092 bytes at once.
Is this the case?

You will have a maximum of 'MEMORY_BUFFER_SIZE' (defined in BTPSKRNL.c) for all allocations.
By default it will be "15*1024".

Regards,
Gigi Joseph.

0 Sravan Janamaddi over 9 years ago in reply to Joseph Gigi

Intellectual 525 points

Hi Gigi Joseph,

I allocated "48 *1024" for BTPS memory. When I connect 7 comports, some times BTLE advertisement is stopped and BT is not responding. It was in a hang state.

What is the reason for this behavior.

Regards

Sravan

0 Sundeep Javvaji over 9 years ago in reply to Sravan Janamaddi

TI__Mastermind 32615 points

Hi,

Do you have any logs you can share?
Hope you have not made a LE connection as advertising is stopped when the LE connection is completed. and are you using the latest Service pack?

0 Sravan Janamaddi over 9 years ago in reply to Sundeep Javvaji

Intellectual 525 points

Hi Sundeep,

Yes I am using latest service pack and I am using spple based demo . Yes connection is purely based on cbt not based on LE.

Basically no logs with this error and BTLE stops advertisement.

Regards,
Sravan

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BTPS_MEMORY_BUFFER_SIZE allocation for SPP demo for 7 comport