StoneStreet One SPP Demo - AddFunctionToScheduler

Nikolas Simon

Other Parts Discussed in Thread: MSP430F5438A, MSP430F5219

Hi there,

I am using an MSP430F5438A and a PAN1323 module to commmunicate to my Android phone. So far I was able to setup the connection to my phone and send messages with the terminal. Now I wanted to send a message every 10ms automatically. Therefore I added a Function to the scheduler with the BTPS_AddFunctionToScheduler-Method, before running the scheduler:

		if((BTPS_AddFunctionToScheduler(IdleFunction, NULL, 0)) && (BTPS_AddFunctionToScheduler(SensorFunction, NULL, 1000)))
		{

		  /* Loop forever and execute the scheduler.                    		*/
		  while(1)
			  BTPS_ExecuteScheduler();
		}

Before I've setup a connection with my phone I get the error "No Connection Established" as expected, but I get it only once. As far as I thought I should get the message every 10ms. Also, after setting up the connection I don't receive anything at all anymore.

Can anyone give me a hint on how to use this method? Isn't this method intended to do exactly what I want? Is it better to setup up an additional timer?

thank you for any help.

over 9 years ago

0 Sundeep Javvaji over 9 years ago

TI__Mastermind 32615 points

Hi,

Moving it to SSO team for precise answer.

0 Nikolas Simon over 9 years ago in reply to Sundeep Javvaji

Prodigy 60 points

Thank you.

Is there anyone on this?

0 Stonestreet One Support over 9 years ago in reply to Nikolas Simon

Mastermind 7225 points

Hi,

Sorry for the delayed response. Just a couple of Questions.

1) Is the Sensor function using SPP to send data to the phone every 10ms?

2) The time period in the BTPS_AddFunctionToScheduler is in ms. So if you want to send a message every 10ms the third parameter in your call should be 10.

Thanks,

Stonestreet One.

0 AQ over 9 years ago in reply to Stonestreet One Support

Expert 1570 points

What are the practical limits to the period argument? I'm currently using the Bluetopia stack on a MSP430F5219 with a function added to the scheduler with a 10ms period, and I want to reduce that time. I'm concerned about reducing so far that it may interfere with the BT stack, or the period becomes inaccurate. E.g. If I set it to 1ms, would the actual period be some minimum actual performance like 2-3ms?

0 Sundeep Javvaji over 9 years ago in reply to AQ

TI__Mastermind 32615 points

Hi,

Please see the BTPSKRNL.pdf file at location "Documentation\Porting" folder as part of the SDK.

0 AQ over 9 years ago in reply to Sundeep Javvaji

Expert 1570 points

Thanks, I had looked through that before posting, but I didn't see much detail on this.

0 Sundeep Javvaji over 9 years ago in reply to AQ

TI__Mastermind 32615 points

Hi,

The Minimum Amount of Time that can be scheduled with the BTPS Scheduler (using function BTPS_AddFunctionToScheduler ) is 0 (BTPS_MINIMUM_SCHEDULER_RESOLUTION) for MSP430 release. If you set any number below this, then by default it will be set to BTPS_MINIMUM_SCHEDULER_RESOLUTION

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StoneStreet One SPP Demo - AddFunctionToScheduler