BLE Stack v1.3 limited discoverable mode

Nick Vallidis

It looks like the limited discoverable mode in the 1.3 stack doesn't stop advertising after 30 seconds. I tried it in my own application and using the simpleBLEperipheral project that comes with the stack. In both cases the device was still advertising after 2.5 minutes.

Has anyone else tried this and seen the same behavior?

I can use general mode and manually enable/disable advertising as a work around, but the limited mode worked well for my application.

Nick

over 12 years ago

0 Aslak N. over 12 years ago

TI__Mastermind 23440 points

Hi Nick,

The default value for limited discovery has been changed to 180 sec without updating some comments and documentation.

To change this value, you can call GAP_SetParamValue(TGAP_LIM_ADV_TIMEOUT, 30); (gap.h) during your user task init.

Best regards,
Aslak

0 jie liu36614 over 12 years ago in reply to Aslak N.

Intellectual 270 points

Can I change it to a value less then 30? I have tried this in 1.2.1 and it doesn't seem to work say if I change it to 5000 which I assume to be 5 seconds.

0 P A over 11 years ago in reply to jie liu36614

Prodigy 40 points

ble/Profiles/Roles/gap.h contains this:

#define TGAP_LIM_ADV_TIMEOUT 1 //!< Maximum time to remain advertising, when in Limited Discoverable mode. In seconds (default 180 seconds)

So it seems your assumption is incorrect: The value is in seconds, not milliseconds!

0 Fotis Andritsopoulos over 11 years ago in reply to P A

Prodigy 60 points

I have red that in 1.4.0 the TGAP_LIM_ADV_TIMEOUT is expressed i seconds instead os msec. How can I set a value less than 1 second ? I would like to advertise just for 100 ms. Is it feasible ?

Thank you

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BLE Stack v1.3 limited discoverable mode