The influence of Bluetooth name and setting tx power level in nRF52832

[Mikey]

Hello,

When I set the tx power in the broadcast initialization, I found that there are restrictions on the setting of the Bluetooth name, as follows

My device name:

Then I saw the bluetooth information in the phone as follows

But comment out the code to set the tx power, the name of the Bluetooth device can be fully displayed

Mobile phone display：

What is the reason？

[Mikey]

init.srdata.p_tx_power_level 	= &tx_power_level;

Hello, I put the transmit power data in the broadcast return packet, so that the problem of the length of the Bluetooth name is solved. Thanks!

[Mikey]

	init.config.ble_adv_primary_phy      = BLE_GAP_PHY_1MBPS;
    init.config.ble_adv_secondary_phy    = BLE_GAP_PHY_2MBPS;
    init.config.ble_adv_extended_enabled = true;

Or use Bluetooth 5.0 and all broadcast packets, so that the broadcast data can reach 255 bytes.

[Karl Ylvisaker]

Mikey said:

so that the problem of the length of the Bluetooth name is solved. Thanks!

Great, I am happy to hear that the issue is now resolved!

Mikey said:

I put the transmit power data in the broadcast return packet,

Yes, you may divide the data over the advertising and scan response's - both of which have a 31 byte limit.

Mikey said:

Or use Bluetooth 5.0 and all broadcast packets, so that the broadcast data can reach 255 bytes.

Using extended advertising should indeed also resolve the data size constraint.

Please do not hesitate to open another ticket if you should encounter any issues or questions in the future.

Good luck with your development!

Best regards,
Karl