control TX power during advertizing

fabrice saadoun

Other Parts Discussed in Thread: CC2541

Hello,

I am running the SimpleBroadcaster sample on the CC2541 EV Board.

Everything is working ok apart from the fact that we cannot control the TX power during advertizing process.

I tried to include the followinf data:

0x02, // length of this data
GAP_ADTYPE_POWER_LEVEL,
0 // 0dBm

In the advertData structure but it did not change anything.

After investigation we saw that the POWER_PA register is controlling the power level at the PHY layer.

How can I controller that register from the application.

A sample code would be appreciated.

Thanks,

Fabrice.

0 ArtoP over 13 years ago

Hi,

Simply use LL_EXT_SetTxPower from ll.h.

Br,

- Arto

0 fabrice saadoun over 13 years ago in reply to ArtoP

Arto,

Thank you for your answer. We also found a way to change it with the HCI_EXT_SetTxPowerCmd command.

We are just asking ourselves if controlling the power from application layer using the GAP_ADTYPE_POWER_LEVEL can be done or not.

Regards,

Fabrice.

0 Andre S over 13 years ago in reply to fabrice saadoun

Expert 1290 points

as far as i know the advData-struct only defines the content of the ADV-packets. it has no impact on the behavior of the stack itself.

so using HCI_EXT_SetTxPowerCmd() should be the "right" way to change the TX-power.

0 fabrice saadoun over 13 years ago in reply to Andre S

Andre,

You may be right. I only based my code on TI samples where in the scanRspData to can see the use of the GAP_ADTYPE_LOCAL_NAME_COMPLETE.

Fabrice.

0 fabrice saadoun over 13 years ago in reply to fabrice saadoun

Sorry typo: GAD_ADTYPE_POWER_LEVEL

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