How to advertise TX power of a peripheral

RE: How to advertise TX power of a peripheral

adam_atmo — Thu, 25 Aug 2022 06:13:24 GMT

That works! Thanks Kenneth.

RE: How to advertise TX power of a peripheral

Kenneth — Tue, 23 Aug 2022 13:26:28 GMT

Try the attachment. Made with NCS v2.

devzone.nordicsemi.com/.../peripheral_5F00_ht_5F00_adve_5F00_tx_5F00_power.zip

Kenneth

RE: How to advertise TX power of a peripheral

adam_atmo — Tue, 23 Aug 2022 02:34:00 GMT

Thanks Kenneth,

I have included the relevant files/functions from the fast pair sample into the Bluetooth: Peripheral HT sample; however, the applciation is failing to build. I have attached my main.c and prj.conf file. Please let me know if I am using the functions correctly - I have pointed out clearly the changes I have made to the Bluetooth: Peripheral HT sample.

Adam

devzone.nordicsemi.com/.../7345.main.c

CONFIG_BT=y
CONFIG_BT_DEBUG_LOG=y
CONFIG_BT_SMP=y
CONFIG_BT_PERIPHERAL=y
CONFIG_BT_DIS=y
CONFIG_BT_DIS_PNP=y
CONFIG_BT_BAS=y
CONFIG_BT_DEVICE_NAME="Zephyr Health Thermometer"
CONFIG_BT_DEVICE_APPEARANCE=768
CONFIG_BT_ATT_ENFORCE_FLOW=n
CONFIG_CBPRINTF_FP_SUPPORT=y

CONFIG_BT_CTLR_TX_PWR_DYNAMIC_CONTROL=y

RE: How to advertise TX power of a peripheral

Kenneth — Mon, 22 Aug 2022 11:32:14 GMT

Hello,

I can find there is a bt_tx_power_adv_data_fill() implementation in bt_tx_power_adv.c that you likely you can use here. I can find that the peripheral_fast_pair example seem to call this from bt_adv_helper_tx_power_prepare(). Basically the bt_tx_power_adv_data_fill() will read out the tx power used in the controller and prepare to be used in advertisment.

static struct bt_data ad[] = {
	BT_DATA_BYTES(BT_DATA_FLAGS, (BT_LE_AD_GENERAL | BT_LE_AD_NO_BREDR)),
	BT_DATA_BYTES(BT_DATA_UUID16_ALL,
		      BT_UUID_16_ENCODE(BT_UUID_HIDS_VAL),
		      BT_UUID_16_ENCODE(BT_UUID_BAS_VAL)),
	/* Empty placeholder for TX power advertising data. */
	{
	},
	/* Empty placeholder for Fast Pair advertising data. */
	{
	},
};

Best regards,
Kenneth