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

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Add public function to set Constant Tone Extension transmission
enabled or disabled for periodic advertising.

Signed-off-by: Piotr Pryga <piotr.pryga@nordicsemi.no>
This commit is contained in:
Piotr Pryga 2021-01-10 22:55:38 -08:00 • committed by Carles Cufí
commit 472febfe69
3 changed files with 99 additions and 0 deletions
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22
include/bluetooth/direction.h
View file

@ -37,4 +37,26 @@ struct bt_df_adv_cte_tx_param {
int bt_df_set_adv_cte_tx_param(struct bt_le_ext_adv *adv,
const struct bt_df_adv_cte_tx_param *params);
/** @brief Enable transmission of Constant Tone Extension for the given
* advertising set.
*
* Transmission of Constant Tone Extension may be enabled only after setting
* periodic advertising parameters (@ref bt_le_per_adv_set_param) and Constant
* Tone Extension parameters (@ref bt_df_set_adv_cte_tx_param).
*
* @param[in] adv Advertising set object.
*
* @return Zero on success or (negative) error code otherwise.
*/
int bt_df_adv_cte_tx_enable(struct bt_le_ext_adv *adv);
/** @brief Disable transmission of Constant Tone Extension for the given
* advertising set.
*
* @param[in] adv Advertising set object.
*
* @return Zero on success or (negative) error code otherwise.
*/
int bt_df_adv_cte_tx_disable(struct bt_le_ext_adv *adv);
#endif /* ZEPHYR_INCLUDE_BLUETOOTH_DF_H_ */

69
subsys/bluetooth/host/direction.c
View file

@ -156,6 +156,40 @@ static int hci_df_read_ant_info(uint8_t *switch_sample_rates,
return 0;
}
/* @brief Function handles send of HCI commnad to enable or disables CTE
* transmission for given advertising set.
*
* @param[in] adv Pointer to advertising set
* @param[in] enable Enable or disable CTE TX
*
* @return Zero in case of success, other value in case of failure.
*/
static int hci_df_set_adv_cte_tx_enable(struct bt_le_ext_adv *adv,
bool enable)
{
struct bt_hci_cp_le_set_cl_cte_tx_enable *cp;
struct bt_hci_cmd_state_set state;
struct net_buf *buf;
buf = bt_hci_cmd_create(BT_HCI_OP_LE_SET_CL_CTE_TX_ENABLE, sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
(void)memset(cp, 0, sizeof(*cp));
cp->handle = adv->handle;
cp->cte_enable = enable ? 1 : 0;
bt_hci_cmd_state_set_init(&state, adv->flags, BT_PER_ADV_CTE_ENABLED,
enable);
bt_hci_cmd_data_state_set(buf, &state);
return bt_hci_cmd_send_sync(BT_HCI_OP_LE_SET_CL_CTE_TX_ENABLE,
buf, NULL);
}
/* @brief Function sets CTE parameters for connection object
*
* @param[in] cte_types Allowed response CTE types
@ -271,10 +305,45 @@ int bt_df_set_adv_cte_tx_param(struct bt_le_ext_adv *adv,
return -EINVAL;
}
if (atomic_test_bit(adv->flags, BT_PER_ADV_CTE_ENABLED)) {
return -EINVAL;
}
err = hci_df_set_cl_cte_tx_params(adv, params);
if (err) {
return err;
}
atomic_set_bit(adv->flags, BT_PER_ADV_CTE_PARAMS_SET);
return 0;
}
static int bt_df_set_adv_cte_tx_enabled(struct bt_le_ext_adv *adv, bool enable)
{
if (!atomic_test_bit(adv->flags, BT_PER_ADV_PARAMS_SET)) {
return -EINVAL;
}
if (!atomic_test_bit(adv->flags, BT_PER_ADV_CTE_PARAMS_SET)) {
return -EINVAL;
}
if (enable == atomic_test_bit(adv->flags, BT_PER_ADV_CTE_ENABLED)) {
return -EALREADY;
}
return hci_df_set_adv_cte_tx_enable(adv, enable);
}
int bt_df_adv_cte_tx_enable(struct bt_le_ext_adv *adv)
{
__ASSERT_NO_MSG(adv);
return bt_df_set_adv_cte_tx_enabled(adv, true);
}
int bt_df_adv_cte_tx_disable(struct bt_le_ext_adv *adv)
{
__ASSERT_NO_MSG(adv);
return bt_df_set_adv_cte_tx_enabled(adv, false);
}

8
subsys/bluetooth/host/hci_core.h
View file

@ -105,6 +105,14 @@ enum {
BT_PER_ADV_ENABLED,
/* Periodic Advertising parameters has been set in the controller. */
BT_PER_ADV_PARAMS_SET,
/* Constant Tone Extension parameters for Periodic Advertising
* has been set in the controller.
*/
BT_PER_ADV_CTE_PARAMS_SET,
/* Constant Tone Extension for Periodic Advertising has been enabled
* in the controller.
*/
BT_PER_ADV_CTE_ENABLED,
BT_ADV_NUM_FLAGS,
};