// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef __ESP_SPP_API_H__
#define __ESP_SPP_API_H__
#include "esp_err.h"
#include "esp_bt_defs.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef enum {
ESP_SPP_SUCCESS = 0, /*!< Successful operation. */
ESP_SPP_FAILURE, /*!< Generic failure. */
ESP_SPP_BUSY, /*!< Temporarily can not handle this request. */
ESP_SPP_NO_DATA, /*!< no data. */
ESP_SPP_NO_RESOURCE /*!< No more set pm control block */
} esp_spp_status_t;
/* Security Setting Mask, Suggest to use ESP_SPP_SEC_NONE, ESP_SPP_SEC_AUTHORIZE or ESP_SPP_SEC_AUTHENTICATE only.*/
#define ESP_SPP_SEC_NONE 0x0000 /*!< No security. relate to BTA_SEC_NONE in bta/bta_api.h */
#define ESP_SPP_SEC_AUTHORIZE 0x0001 /*!< Authorization required (only needed for out going connection ) relate to BTA_SEC_AUTHORIZE in bta/bta_api.h*/
#define ESP_SPP_SEC_AUTHENTICATE 0x0012 /*!< Authentication required. relate to BTA_SEC_AUTHENTICATE in bta/bta_api.h*/
#define ESP_SPP_SEC_ENCRYPT 0x0024 /*!< Encryption required. relate to BTA_SEC_ENCRYPT in bta/bta_api.h*/
#define ESP_SPP_SEC_MODE4_LEVEL4 0x0040 /*!< Mode 4 level 4 service, i.e. incoming/outgoing MITM and P-256 encryption relate to BTA_SEC_MODE4_LEVEL4 in bta/bta_api.h*/
#define ESP_SPP_SEC_MITM 0x3000 /*!< Man-In-The_Middle protection relate to BTA_SEC_MITM in bta/bta_api.h*/
#define ESP_SPP_SEC_IN_16_DIGITS 0x4000 /*!< Min 16 digit for pin code relate to BTA_SEC_IN_16_DIGITS in bta/bta_api.h*/
typedef uint16_t esp_spp_sec_t;
typedef enum {
ESP_SPP_ROLE_MASTER = 0, /*!< Role: master */
ESP_SPP_ROLE_SLAVE = 1, /*!< Role: slave */
} esp_spp_role_t;
typedef enum {
ESP_SPP_MODE_CB = 0, /*!< When data is coming, a callback will come with data */
ESP_SPP_MODE_VFS = 1, /*!< Use VFS to write/read data */
} esp_spp_mode_t;
#define ESP_SPP_MAX_MTU (3*330) /*!< SPP max MTU */
#define ESP_SPP_MAX_SCN 31 /*!< SPP max SCN */
/**
* @brief SPP callback function events
*/
typedef enum {
ESP_SPP_INIT_EVT = 0, /*!< When SPP is inited, the event comes */
ESP_SPP_DISCOVERY_COMP_EVT = 8, /*!< When SDP discovery complete, the event comes */
ESP_SPP_OPEN_EVT = 26, /*!< When SPP Client connection open, the event comes */
ESP_SPP_CLOSE_EVT = 27, /*!< When SPP connection closed, the event comes */
ESP_SPP_START_EVT = 28, /*!< When SPP server started, the event comes */
ESP_SPP_CL_INIT_EVT = 29, /*!< When SPP client initiated a connection, the event comes */
ESP_SPP_DATA_IND_EVT = 30, /*!< When SPP connection received data, the event comes, only for ESP_SPP_MODE_CB */
ESP_SPP_CONG_EVT = 31, /*!< When SPP connection congestion status changed, the event comes, only for ESP_SPP_MODE_CB */
ESP_SPP_WRITE_EVT = 33, /*!< When SPP write operation completes, the event comes, only for ESP_SPP_MODE_CB */
ESP_SPP_SRV_OPEN_EVT = 34, /*!< When SPP Server connection open, the event comes */
} esp_spp_cb_event_t;
/**
* @brief SPP callback parameters union
*/
typedef union {
/**
* @brief SPP_INIT_EVT
*/
struct spp_init_evt_param {
esp_spp_status_t status; /*!< status */
} init; /*!< SPP callback param of SPP_INIT_EVT */
/**
* @brief SPP_DISCOVERY_COMP_EVT
*/
struct spp_discovery_comp_evt_param {
esp_spp_status_t status; /*!< status */
uint8_t scn_num; /*!< The num of scn_num */
uint8_t scn[ESP_SPP_MAX_SCN]; /*!< channel # */
} disc_comp; /*!< SPP callback param of SPP_DISCOVERY_COMP_EVT */
/**
* @brief ESP_SPP_OPEN_EVT
*/
struct spp_open_evt_param {
esp_spp_status_t status; /*!< status */
uint32_t handle; /*!< The connection handle */
int fd; /*!< The file descriptor only for ESP_SPP_MODE_VFS */
esp_bd_addr_t rem_bda; /*!< The peer address */
} open; /*!< SPP callback param of ESP_SPP_OPEN_EVT */
/**
* @brief ESP_SPP_SRV_OPEN_EVT
*/
struct spp_srv_open_evt_param {
esp_spp_status_t status; /*!< status */
uint32_t handle; /*!< The connection handle */
uint32_t new_listen_handle; /*!< The new listen handle */
int fd; /*!< The file descriptor only for ESP_SPP_MODE_VFS */
esp_bd_addr_t rem_bda; /*!< The peer address */
} srv_open; /*!< SPP callback param of ESP_SPP_SRV_OPEN_EVT */
/**
* @brief ESP_SPP_CLOSE_EVT
*/
struct spp_close_evt_param {
esp_spp_status_t status; /*!< status */
uint32_t port_status; /*!< PORT status */
uint32_t handle; /*!< The connection handle */
bool async; /*!< FALSE, if local initiates disconnect */
} close; /*!< SPP callback param of ESP_SPP_CLOSE_EVT */
/**
* @brief ESP_SPP_START_EVT
*/
struct spp_start_evt_param {
esp_spp_status_t status; /*!< status */
uint32_t handle; /*!< The connection handle */
uint8_t sec_id; /*!< security ID used by this server */
bool use_co; /*!< TRUE to use co_rfc_data */
} start; /*!< SPP callback param of ESP_SPP_START_EVT */
/**
* @brief ESP_SPP_CL_INIT_EVT
*/
struct spp_cl_init_evt_param {
esp_spp_status_t status; /*!< status */
uint32_t handle; /*!< The connection handle */
uint8_t sec_id; /*!< security ID used by this server */
bool use_co; /*!< TRUE to use co_rfc_data */
} cl_init; /*!< SPP callback param of ESP_SPP_CL_INIT_EVT */
/**
* @brief ESP_SPP_WRITE_EVT
*/
struct spp_write_evt_param {
esp_spp_status_t status; /*!< status */
uint32_t handle; /*!< The connection handle */
int len; /*!< The length of the data written. */
bool cong; /*!< congestion status */
} write; /*!< SPP callback param of ESP_SPP_WRITE_EVT */
/**
* @brief ESP_SPP_DATA_IND_EVT
*/
struct spp_data_ind_evt_param {
esp_spp_status_t status; /*!< status */
uint32_t handle; /*!< The connection handle */
uint16_t len; /*!< The length of data */
uint8_t *data; /*!< The data received */
} data_ind; /*!< SPP callback param of ESP_SPP_DATA_IND_EVT */
/**
* @brief ESP_SPP_CONG_EVT
*/
struct spp_cong_evt_param {
esp_spp_status_t status; /*!< status */
uint32_t handle; /*!< The connection handle */
bool cong; /*!< TRUE, congested. FALSE, uncongested */
} cong; /*!< SPP callback param of ESP_SPP_CONG_EVT */
} esp_spp_cb_param_t; /*!< SPP callback parameter union type */
/**
* @brief SPP callback function type
* @param event: Event type
* @param param: Point to callback parameter, currently is union type
*/
typedef void (esp_spp_cb_t)(esp_spp_cb_event_t event, esp_spp_cb_param_t *param);
/**
* @brief This function is called to init callbacks
* with SPP module.
*
* @param[in] callback: pointer to the init callback function.
*
* @return
* - ESP_OK: success
* - other: failed
*/
esp_err_t esp_spp_register_callback(esp_spp_cb_t callback);
/**
* @brief This function is called to init SPP.
*
* @param[in] mode: Choose the mode of SPP, ESP_SPP_MODE_CB or ESP_SPP_MODE_VFS.
*
* @return
* - ESP_OK: success
* - other: failed
*/
esp_err_t esp_spp_init(esp_spp_mode_t mode);
/**
* @brief This function is called to uninit SPP.
*
* @return
* - ESP_OK: success
* - other: failed
*/
esp_err_t esp_spp_deinit();
/**
* @brief This function is called to performs service discovery for
* the services provided by the given peer device. When the
* operation is complete the callback function will be called
* with a ESP_SPP_DISCOVERY_COMP_EVT.
*
* @param[in] bd_addr: Remote device bluetooth device address.
*
* @return
* - ESP_OK: success
* - other: failed
*/
esp_err_t esp_spp_start_discovery(esp_bd_addr_t bd_addr);
/**
* @brief This function makes an SPP connection to a remote BD Address.
* When the connection is initiated or failed to initiate,
* the callback is called with ESP_SPP_CL_INIT_EVT.
* When the connection is established or failed,
* the callback is called with ESP_SPP_OPEN_EVT.
*
* @param[in] sec_mask: Security Setting Mask. Suggest to use ESP_SPP_SEC_NONE, ESP_SPP_SEC_AUTHORIZE or ESP_SPP_SEC_AUTHENTICATE only.
* @param[in] role: Master or slave.
* @param[in] remote_scn: Remote device bluetooth device SCN.
* @param[in] peer_bd_addr: Remote device bluetooth device address.
*
* @return
* - ESP_OK: success
* - other: failed
*/
esp_err_t esp_spp_connect(esp_spp_sec_t sec_mask,
esp_spp_role_t role, uint8_t remote_scn, esp_bd_addr_t peer_bd_addr);
/**
* @brief This function closes an SPP connection.
*
* @param[in] handle: The connection handle.
*
* @return
* - ESP_OK: success
* - other: failed
*/
esp_err_t esp_spp_disconnect(uint32_t handle);
/**
* @brief This function create a SPP server and starts listening for an
* SPP connection request from a remote Bluetooth device.
* When the server is started successfully, the callback is called
* with ESP_SPP_START_EVT.
* When the connection is established, the callback is called
* with ESP_SPP_SRV_OPEN_EVT.
*
* @param[in] sec_mask: Security Setting Mask. Security Setting Mask. Suggest to use ESP_SPP_SEC_NONE, ESP_SPP_SEC_AUTHORIZE or ESP_SPP_SEC_AUTHENTICATE only.
* @param[in] role: Master or slave.
* @param[in] local_scn: The specific channel you want to get.
* If channel is 0, means get any channel.
* @param[in] name: Server's name.
*
* @return
* - ESP_OK: success
* - other: failed
*/
esp_err_t esp_spp_start_srv(esp_spp_sec_t sec_mask,
esp_spp_role_t role, uint8_t local_scn, const char *name);
/**
* @brief This function is used to write data, only for ESP_SPP_MODE_CB.
*
* @param[in] handle: The connection handle.
* @param[in] len: The length of the data written.
* @param[in] p_data: The data written.
*
* @return
* - ESP_OK: success
* - other: failed
*/
esp_err_t esp_spp_write(uint32_t handle, int len, uint8_t *p_data);
/**
* @brief This function is used to register VFS.
*
* @return
* - ESP_OK: success
* - other: failed
*/
esp_err_t esp_spp_vfs_register(void);
#ifdef __cplusplus
}
#endif
#endif ///__ESP_SPP_API_H__