esp-idf/examples/bluetooth/hci/hci_common_component/bt_hci_common.c

/*
 * Basic functionality for Bluetooth Host Controller Interface Layer.
 *
 * SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
 *
 * SPDX-License-Identifier: Unlicense OR CC0-1.0
 */

#include "bt_hci_common.h"

uint16_t make_cmd_set_evt_mask (uint8_t *buf, uint8_t *evt_mask)
{
    UINT8_TO_STREAM (buf, H4_TYPE_COMMAND);
    UINT16_TO_STREAM (buf, HCI_SET_EVT_MASK);
    UINT8_TO_STREAM  (buf, HCIC_PARAM_SIZE_SET_EVENT_MASK);
    ARRAY_TO_STREAM(buf, evt_mask, HCIC_PARAM_SIZE_SET_EVENT_MASK);
    return HCI_H4_CMD_PREAMBLE_SIZE + HCIC_PARAM_SIZE_SET_EVENT_MASK;
}

uint16_t make_cmd_ble_set_scan_enable (uint8_t *buf, uint8_t scan_enable,
                                       uint8_t filter_duplicates)
{
    UINT8_TO_STREAM (buf, H4_TYPE_COMMAND);
    UINT16_TO_STREAM (buf, HCI_BLE_WRITE_SCAN_ENABLE);
    UINT8_TO_STREAM  (buf, HCIC_PARAM_SIZE_BLE_WRITE_SCAN_ENABLE);
    UINT8_TO_STREAM (buf, scan_enable);
    UINT8_TO_STREAM (buf, filter_duplicates);
    return HCI_H4_CMD_PREAMBLE_SIZE + HCIC_PARAM_SIZE_BLE_WRITE_SCAN_ENABLE;
}

uint16_t make_cmd_ble_set_scan_params (uint8_t *buf, uint8_t scan_type,
                                       uint16_t scan_interval, uint16_t scan_window,
                                       uint8_t own_addr_type, uint8_t filter_policy)
{
    UINT8_TO_STREAM (buf, H4_TYPE_COMMAND);
    UINT16_TO_STREAM (buf, HCI_BLE_WRITE_SCAN_PARAM);
    UINT8_TO_STREAM  (buf, HCIC_PARAM_SIZE_BLE_WRITE_SCAN_PARAM);
    UINT8_TO_STREAM (buf, scan_type);
    UINT16_TO_STREAM (buf, scan_interval);
    UINT16_TO_STREAM (buf, scan_window);
    UINT8_TO_STREAM (buf, own_addr_type);
    UINT8_TO_STREAM (buf, filter_policy);
    return HCI_H4_CMD_PREAMBLE_SIZE + HCIC_PARAM_SIZE_BLE_WRITE_SCAN_PARAM;
}

uint16_t make_cmd_ble_set_adv_enable (uint8_t *buf, uint8_t adv_enable)
{
    UINT8_TO_STREAM (buf, H4_TYPE_COMMAND);
    UINT16_TO_STREAM (buf, HCI_BLE_WRITE_ADV_ENABLE);
    UINT8_TO_STREAM  (buf, HCIC_PARAM_SIZE_WRITE_ADV_ENABLE);
    UINT8_TO_STREAM (buf, adv_enable);
    return HCI_H4_CMD_PREAMBLE_SIZE + HCIC_PARAM_SIZE_WRITE_ADV_ENABLE;
}

uint16_t make_cmd_ble_set_adv_param (uint8_t *buf, uint16_t adv_int_min, uint16_t adv_int_max,
                                     uint8_t adv_type, uint8_t addr_type_own,
                                     uint8_t addr_type_dir, bd_addr_t direct_bda,
                                     uint8_t channel_map, uint8_t adv_filter_policy)
{
    UINT8_TO_STREAM (buf, H4_TYPE_COMMAND);
    UINT16_TO_STREAM (buf, HCI_BLE_WRITE_ADV_PARAMS);
    UINT8_TO_STREAM  (buf, HCIC_PARAM_SIZE_BLE_WRITE_ADV_PARAMS );

    UINT16_TO_STREAM (buf, adv_int_min);
    UINT16_TO_STREAM (buf, adv_int_max);
    UINT8_TO_STREAM (buf, adv_type);
    UINT8_TO_STREAM (buf, addr_type_own);
    UINT8_TO_STREAM (buf, addr_type_dir);
    BDADDR_TO_STREAM (buf, direct_bda);
    UINT8_TO_STREAM (buf, channel_map);
    UINT8_TO_STREAM (buf, adv_filter_policy);
    return HCI_H4_CMD_PREAMBLE_SIZE + HCIC_PARAM_SIZE_BLE_WRITE_ADV_PARAMS;
}

uint16_t make_cmd_reset(uint8_t *buf)
{
    UINT8_TO_STREAM (buf, H4_TYPE_COMMAND);
    UINT16_TO_STREAM (buf, HCI_RESET);
    UINT8_TO_STREAM (buf, 0);
    return HCI_H4_CMD_PREAMBLE_SIZE;
}



uint16_t make_cmd_ble_set_adv_data(uint8_t *buf, uint8_t data_len, uint8_t *p_data)
{
    UINT8_TO_STREAM (buf, H4_TYPE_COMMAND);
    UINT16_TO_STREAM (buf, HCI_BLE_WRITE_ADV_DATA);
    UINT8_TO_STREAM  (buf, HCIC_PARAM_SIZE_BLE_WRITE_ADV_DATA + 1);

    memset(buf, 0, HCIC_PARAM_SIZE_BLE_WRITE_ADV_DATA);

    if (p_data != NULL && data_len > 0) {
        if (data_len > HCIC_PARAM_SIZE_BLE_WRITE_ADV_DATA) {
            data_len = HCIC_PARAM_SIZE_BLE_WRITE_ADV_DATA;
        }

        UINT8_TO_STREAM (buf, data_len);

        ARRAY_TO_STREAM (buf, p_data, data_len);
    }
    return HCI_H4_CMD_PREAMBLE_SIZE + HCIC_PARAM_SIZE_BLE_WRITE_ADV_DATA + 1;
}