esp-idf/components/bt/include/bt.h

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// 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.
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#ifndef __BT_H__
#define __BT_H__
#include <stdint.h>
#include <stdbool.h>
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#include "esp_err.h"
#include "sdkconfig.h"
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#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Controller config options, depend on config mask.
* Config mask indicate which functions enabled, this means
* some options or parameters of some functions enabled by config mask.
*/
typedef struct {
uint8_t hci_uart_no; /*!< If use UART1/2 as HCI IO interface, indicate UART number */
uint32_t hci_uart_baudrate; /*!< If use UART1/2 as HCI IO interface, indicate UART baudrate */
} esp_bt_controller_config_t;
#ifdef CONFIG_BT_ENABLED
#ifdef CONFIG_BT_HCI_UART_NO
#define BT_HCI_UART_NO_DEFAULT CONFIG_BT_HCI_UART_NO
#else
#define BT_HCI_UART_NO_DEFAULT 1
#endif /* BT_HCI_UART_NO_DEFAULT */
#ifdef CONFIG_BT_HCI_UART_BAUDRATE
#define BT_HCI_UART_BAUDRATE_DEFAULT CONFIG_BT_HCI_UART_BAUDRATE
#else
#define BT_HCI_UART_BAUDRATE_DEFAULT 921600
#endif /* BT_HCI_UART_BAUDRATE_DEFAULT */
#define BT_CONTROLLER_INIT_CONFIG_DEFAULT() { \
.hci_uart_no = BT_HCI_UART_NO_DEFAULT,\
.hci_uart_baudrate = BT_HCI_UART_BAUDRATE_DEFAULT,\
};
#else
#define BT_CONTROLLER_INIT_CONFIG_DEFAULT() {0}; _Static_assert(0, "please enable bluetooth in menuconfig to use bt.h");
#endif
/**
* @brief Bluetooth mode for controller enable/disable
*/
typedef enum {
ESP_BT_MODE_IDLE = 0x00, /*!< Bluetooth is not running */
ESP_BT_MODE_BLE = 0x01, /*!< Run BLE mode */
ESP_BT_MODE_CLASSIC_BT = 0x02, /*!< Run Classic BT mode */
ESP_BT_MODE_BTDM = 0x03, /*!< Run dual mode */
} esp_bt_mode_t;
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/**
* @brief Bluetooth controller enable/disable/initialised/de-initialised status
*/
typedef enum {
ESP_BT_CONTROLLER_STATUS_IDLE = 0,
ESP_BT_CONTROLLER_STATUS_INITED,
ESP_BT_CONTROLLER_STATUS_ENABLED,
ESP_BT_CONTROLLER_STATUS_NUM,
} esp_bt_controller_status_t;
/**
* @brief Initialize BT controller to allocate task and other resource.
* @param cfg: Initial configuration of BT controller.
* This function should be called only once, before any other BT functions are called.
* @return ESP_OK - success, other - failed
*/
esp_err_t esp_bt_controller_init(esp_bt_controller_config_t *cfg);
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/**
* @brief De-initialize BT controller to free resource and delete task.
*
* This function should be called only once, after any other BT functions are called.
* This function is not whole completed, esp_bt_controller_init cannot called after this function.
*/
void esp_bt_controller_deinit(void);
/**
* @brief Enable BT controller
* @param mode : the mode(BLE/BT/BTDM) to enable.
* Now only support BTDM.
* @return ESP_OK - success, other - failed
*/
esp_err_t esp_bt_controller_enable(esp_bt_mode_t mode);
/**
* @brief Disable BT controller
* @param mode : the mode(BLE/BT/BTDM) to disable.
* Now only support BTDM.
* @return ESP_OK - success, other - failed
*/
esp_err_t esp_bt_controller_disable(esp_bt_mode_t mode);
/**
* @brief Get BT controller is initialised/de-initialised/enabled/disabled
* @return status value
*/
esp_bt_controller_status_t esp_bt_controller_get_status(void);
/** @brief esp_vhci_host_callback
* used for vhci call host function to notify what host need to do
*/
typedef struct esp_vhci_host_callback {
void (*notify_host_send_available)(void); /*!< callback used to notify that the host can send packet to controller */
int (*notify_host_recv)(uint8_t *data, uint16_t len); /*!< callback used to notify that the controller has a packet to send to the host*/
} esp_vhci_host_callback_t;
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/** @brief esp_vhci_host_check_send_available
* used for check actively if the host can send packet to controller or not.
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* @return true for ready to send, false means cannot send packet
*/
bool esp_vhci_host_check_send_available(void);
/** @brief esp_vhci_host_send_packet
* host send packet to controller
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* @param data the packet point
*,@param len the packet length
*/
void esp_vhci_host_send_packet(uint8_t *data, uint16_t len);
/** @brief esp_vhci_host_register_callback
* register the vhci referece callback, the call back
* struct defined by vhci_host_callback structure.
* @param callback esp_vhci_host_callback type variable
*/
void esp_vhci_host_register_callback(const esp_vhci_host_callback_t *callback);
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#ifdef __cplusplus
}
#endif
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#endif /* __BT_H__ */