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Bluetooth: host: direction: Add public API to set CTE TX params for adv.

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Add publicly accessible function to set Constant Tone Extension
parameters for CTE transmission with periodic advertising.

Signed-off-by: Piotr Pryga <piotr.pryga@nordicsemi.no>
This commit is contained in:
Piotr Pryga 2020-12-01 06:50:46 -08:00 • committed by Carles Cufí
commit 1c493b4a77
3 changed files with 69 additions and 42 deletions
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40
include/bluetooth/direction.h Normal file
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@ -0,0 +1,40 @@
/*
* Copyright (c) 2020 Nordic Semiconductor ASA
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef ZEPHYR_INCLUDE_BLUETOOTH_DF_H_
#define ZEPHYR_INCLUDE_BLUETOOTH_DF_H_
/** @brief Constant Tone Extension parameters for connectionless
* transmission.
*
* The structure holds information required to setup CTE transmission
* in periodic advertising.
*/
struct bt_df_adv_cte_tx_param {
/** Length of CTE in 8us units */
uint8_t cte_len;
/** CTE Type: AoA, AoD 1us slots, AoD 2us slots */
uint8_t cte_type;
/** Number of CTE to transmit in each periodic adv interval */
uint8_t cte_count;
/** Number of Antenna IDs in the switch pattern */
uint8_t num_ant_ids;
/** List of antenna IDs in the pattern */
uint8_t *ant_ids;
};
/** @brief Set or update the Constant Tone Extension parameters for periodic
* advertising set.
*
* @param[in] adv Advertising set object.
* @param[in] params Constant Tone Extension parameters.
*
* @return Zero on success or (negative) error code otherwise.
*/
int bt_df_set_adv_cte_tx_param(struct bt_le_ext_adv *adv,
const struct bt_df_adv_cte_tx_param *params);
#endif /* ZEPHYR_INCLUDE_BLUETOOTH_DF_H_ */

31
subsys/bluetooth/host/direction.c
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@ -9,11 +9,11 @@
#include <bluetooth/hci.h>
#include <bluetooth/l2cap.h>
#include <bluetooth/conn.h>
#include <bluetooth/direction.h>
#include <sys/byteorder.h>
#include "hci_core.h"
#include "conn_internal.h"
#include "direction.h"
#include "direction_internal.h"
#define BT_DBG_ENABLED IS_ENABLED(CONFIG_BT_DEBUG_DF)
@ -44,7 +44,7 @@ static struct bt_le_df_ant_info df_ant_info;
BT_HCI_LE_1US_AOA_RX))
static int hci_df_set_cl_cte_tx_params(const struct bt_le_ext_adv *adv,
const struct bt_le_df_adv_cte_tx_params *params)
const struct bt_df_adv_cte_tx_param *params)
{
struct bt_hci_cp_le_set_cl_cte_tx_params *cp;
struct net_buf *buf;
@ -250,3 +250,30 @@ int le_df_init(void)
BT_DBG("DF initialized.");
return 0;
}
int bt_df_set_adv_cte_tx_param(struct bt_le_ext_adv *adv,
const struct bt_df_adv_cte_tx_param *params)
{
__ASSERT_NO_MSG(adv);
__ASSERT_NO_MSG(params);
int err;
if (!BT_FEAT_LE_CONNECTIONLESS_CTE_TX(bt_dev.le.features)) {
return -ENOTSUP;
}
/* Check if BT_ADV_PARAMS_SET is set, because it implies the set
* has already been created.
*/
if (!atomic_test_bit(adv->flags, BT_ADV_PARAMS_SET)) {
return -EINVAL;
}
err = hci_df_set_cl_cte_tx_params(adv, params);
if (err) {
return err;
}
return 0;
}

40
subsys/bluetooth/host/direction.h
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@ -1,40 +0,0 @@
/*
* Copyright (c) 2020 Nordic Semiconductor ASA
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef ZEPHYR_SUBSYS_BLUETOOTH_HOST_DF_H_
#define ZEPHYR_SUBSYS_BLUETOOTH_HOST_DF_H_
/* @brief Optional switching and sampling rates for Angle of Departure
* and Angle or Arrival modes.
*/
enum bt_df_opt_swich_sample_rates {
/* Support Angle of Departure 1us switching TX */
DF_AOD_1US_SWITCH_TX_SUPP = BIT(0),
/* Support Angle of departure 1us sampling RX */
DF_AOD_1US_SAMPL_RX_SUPP = BIT(1),
/* Support Angle of Arrival 1us switching and sampling RX */
DF_AOA_1US_SWITCH_SAMPL_RX_SUPP = BIT(2),
};
/* @brief Constant Tone Extension parameters for connectionless
* transmission.
*
* The structure holds information required to setup CTE transmission
* in periodic advertising.
*/
struct bt_le_df_adv_cte_tx_params {
/* Length of CTE in 8us units */
uint8_t cte_len;
/* CTE Type: AoA, AoD 1us slots, AoD 2us slots */
uint8_t cte_type;
/* Number of CTE to transmit in each periodic adv interval */
uint8_t cte_count;
/* Number of Antenna IDs in the switch pattern */
uint8_t num_ant_ids;
/* List of antenna IDs in the pattern */
uint8_t *ant_ids;
};
#endif /* ZEPHYR_SUBSYS_BLUETOOTH_HOST_DF_H_ */