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Bluetooth: host: Add HCI set conn CTE TX params wrapper function

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Add implementation of a wrapper for HCI_LE_Set_Connection_-
CTE_Transmit_Parameters command.

Signed-off-by: Piotr Pryga <piotr.pryga@nordicsemi.no>
This commit is contained in:
Piotr Pryga 2020-10-26 06:42:25 -07:00 • committed by Carles Cufí
commit e54d2a7740
1 changed files with 72 additions and 0 deletions
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72
subsys/bluetooth/host/direction.c
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@ -7,8 +7,11 @@
#include <assert.h>
#include <bluetooth/hci.h>
#include <bluetooth/conn.h>
#include <sys/byteorder.h>
#include "conn_internal.h"
#define BT_DBG_ENABLED IS_ENABLED(CONFIG_BT_DEBUG_HCI_CORE)
#define LOG_MODULE_NAME bt_df
#include "common/log.h"
@ -59,3 +62,72 @@ static int hci_df_read_ant_info(uint8_t *switch_sample_rates,
return 0;
}
/* @brief Function sets CTE parameters for connection object
*
* @param[in] cte_types Allowed response CTE types
* @param[in] num_ant_id Number of available antenna identification
* patterns in @p ant_id array.
* @param[in] ant_id Array with antenna identification patterns.
*
* @return Zero in case of success, other value in case of failure.
*/
static int hci_df_set_conn_cte_tx_param(struct bt_conn *conn, uint8_t cte_types,
uint8_t num_ant_id, uint8_t *ant_id)
{
__ASSERT_NO_MSG(conn);
__ASSERT_NO_MSG(cte_types != 0);
struct bt_hci_cp_le_set_conn_cte_tx_params *cp;
struct bt_hci_rp_le_set_conn_cte_tx_params *rp;
struct net_buf *buf, *rsp;
int err;
/* If AoD is not enabled, ant_ids are ignored by controller:
* BT Core spec 5.2 Vol 4, Part E sec. 7.8.84.
*/
if (cte_types & BT_HCI_LE_AOD_CTE_RSP_1US ||
cte_types & BT_HCI_LE_AOD_CTE_RSP_2US) {
if (num_ant_id < BT_HCI_LE_SWITCH_PATTERN_LEN_MIN ||
num_ant_id > BT_HCI_LE_SWITCH_PATTERN_LEN_MAX ||
!ant_id) {
return -EINVAL;
}
__ASSERT_NO_MSG((sizeof(*cp) + num_ant_id) < UINT8_MAX);
}
buf = bt_hci_cmd_create(BT_HCI_OP_LE_SET_CONN_CTE_TX_PARAMS,
sizeof(*cp) + num_ant_id);
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
cp->handle = sys_cpu_to_le16(conn->handle);
cp->cte_types = cte_types;
if (num_ant_id) {
uint8_t *dest_ant_id = net_buf_add(buf, num_ant_id);
memcpy(dest_ant_id, ant_id, num_ant_id);
cp->switch_pattern_len = num_ant_id;
} else {
cp->switch_pattern_len = 0;
}
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_SET_CONN_CTE_TX_PARAMS,
buf, &rsp);
if (err) {
return err;
}
rp = (void *)rsp->data;
if (conn->handle != sys_le16_to_cpu(rp->handle)) {
err = -EIO;
}
net_buf_unref(rsp);
return err;
}