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examples/bluetooth/hci/hci_common_component/include/bt_hci_common.h
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/*
* Baisc macros and functions for Bluetooth Host Controller Interface Layer.
*
* SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Unlicense OR CC0-1.0
*/
#pragma once
#ifdef __cplusplus
extern "C" {
#endif
#include "stdio.h"
#include "string.h"
#define HCI_H4_CMD_PREAMBLE_SIZE (4)
/* HCI Command Opcode group Field (OGF) */
#define HCI_GRP_HOST_CONT_BASEBAND_CMDS (0x03 << 10) /* 0x0C00 */
#define HCI_GRP_BLE_CMDS (0x08 << 10)
/* HCI Command Opcode Command Field (OCF) */
#define HCI_RESET (0x0003 | HCI_GRP_HOST_CONT_BASEBAND_CMDS)
#define HCI_SET_EVT_MASK (0x0001 | HCI_GRP_HOST_CONT_BASEBAND_CMDS)
/* Advertising Commands. */
#define HCI_BLE_WRITE_ADV_ENABLE (0x000A | HCI_GRP_BLE_CMDS)
#define HCI_BLE_WRITE_ADV_DATA (0x0008 | HCI_GRP_BLE_CMDS)
#define HCI_BLE_WRITE_ADV_PARAMS (0x0006 | HCI_GRP_BLE_CMDS)
/* Scan commands */
#define HCI_BLE_WRITE_SCAN_PARAM (0x000B | HCI_GRP_BLE_CMDS)
#define HCI_BLE_WRITE_SCAN_ENABLE (0x000C | HCI_GRP_BLE_CMDS)
/* HCI Command length. */
#define HCIC_PARAM_SIZE_WRITE_ADV_ENABLE 1
#define HCIC_PARAM_SIZE_BLE_WRITE_ADV_PARAMS 15
#define HCIC_PARAM_SIZE_BLE_WRITE_ADV_DATA 31
#define HCIC_PARAM_SIZE_SET_EVENT_MASK (8)
#define HCIC_PARAM_SIZE_BLE_WRITE_SCAN_PARAM (7)
#define HCIC_PARAM_SIZE_BLE_WRITE_SCAN_ENABLE (2)
/* LE Meta Events. */
#define LE_META_EVENTS (0x3E)
#define HCI_LE_ADV_REPORT (0x02)
#define BD_ADDR_LEN (6) /* Device address length */
typedef uint8_t bd_addr_t[BD_ADDR_LEN]; /* Device address */
#define UINT16_TO_STREAM(p, u16) {*(p)++ = (uint8_t)(u16); *(p)++ = (uint8_t)((u16) >> 8);}
#define UINT8_TO_STREAM(p, u8) {*(p)++ = (uint8_t)(u8);}
#define BDADDR_TO_STREAM(p, a) {int ijk; for (ijk = 0; ijk < BD_ADDR_LEN; ijk++) *(p)++ = (uint8_t) a[BD_ADDR_LEN - 1 - ijk];}
#define ARRAY_TO_STREAM(p, a, len) {int ijk; for (ijk = 0; ijk < len; ijk++) *(p)++ = (uint8_t) a[ijk];}
enum {
H4_TYPE_COMMAND = 1,
H4_TYPE_ACL = 2,
H4_TYPE_SCO = 3,
H4_TYPE_EVENT = 4
};
/**
* @brief Writes reset bit in buf and returns size of input buffer after
* writing in it.
*
* @param buf Input buffer to write which will be sent to controller.
*
* @return Size of buf after writing into it.
*/
uint16_t make_cmd_reset(uint8_t *buf);
/**
* @brief This function is used to request the Controller to start or stop advertising.
*
* @param buf Input buffer to write which will be sent to controller.
* @param adv_enable 1 to enable advertising and 0 to disable.
*
* @return Size of buf after writing into it.
*/
uint16_t make_cmd_ble_set_adv_enable (uint8_t *buf, uint8_t adv_enable);
/**
* @brief This function is used by the Host to set the advertising parameters.
*
* @param buf Input buffer to write which will be sent to controller.
* @param adv_int_min Minimum advertising interval.
* @param adv_int_max Maximum advertising interval.
* @param adv_type Advertising type.
* @param addr_type_own Own advertising type.
* @param addr_type_peer Peer device's address type.
* @param peer_addr Peer device's BD address.
* @param channel_map Advertising channel map.
* @param adv_filter_policy Advertising Filter Policy.
*
* @return Size of buf after writing into it.
*/
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_peer, bd_addr_t peer_addr,
uint8_t channel_map, uint8_t adv_filter_policy);
/**
* @brief This function is used to set the data used in advertising packets that have a data field.
*
* @param buf Input buffer to write which will be sent to controller.
* @param data_len Length of p_data.
* @param p_data Data to be set.
*
* @return Size of buf after writing into it.
*/
uint16_t make_cmd_ble_set_adv_data(uint8_t *buf, uint8_t data_len, uint8_t *p_data);
/**
* @brief This function is used to control which LE events are generated by the HCI for the Host.
* The event mask allows the Host to control which events will interrupt it.
*
* @param buf Input buffer to write which will be sent to controller.
* @param evt_mask 8 byte data as per spec.
*
* @return Size of buf after writing into it.
*/
uint16_t make_cmd_set_evt_mask (uint8_t *buf, uint8_t *evt_mask);
/**
* @brief This function is used to set the scan parameters.
*
* @param buf Input buffer to write which will be sent to controller.
* @param scan_type Active or Passive scanning.
* @param scan_interval Set scan_interval.
* @param scan_window Set scan_window.
* @param own_addr_type Set own address type.
* @param filter_policy Scanning filter policy.
*
* @return Size of buf after writing into it.
*/
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);
/**
* @brief This function is used to set the data used in advertising packets that have a data field.
*
* @param buf Input buffer to write which will be sent to controller.
* @param scan_enable Enable or disable scanning.
* @param filter_duplicates Filter duplicates enable or disable.
*
* @return Size of buf after writing into it.
*/
uint16_t make_cmd_ble_set_scan_enable (uint8_t *buf, uint8_t scan_enable,
uint8_t filter_duplicates);
#ifdef __cplusplus
}
#endif
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