xref: /btstack/src/classic/hid_device.h (revision 481c7cdcf807e4a3e46412ac0682871be5e7d35a)

/*
 * Copyright (C) 2014 BlueKitchen GmbH
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holders nor the names of
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 * 4. Any redistribution, use, or modification is done solely for
 *    personal benefit and not for any commercial purpose or for
 *    monetary gain.
 *
 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * Please inquire about commercial licensing options at
 * [email protected]
 *
 */

#ifndef __HID_DEVICE_H
#define __HID_DEVICE_H

#include <stdint.h>
#include "btstack_defines.h"
#include "bluetooth.h"

#if defined __cplusplus
extern "C" {
#endif

/* API_START */

typedef enum {
    HID_MESSAGE_TYPE_HANDSHAKE = 0,
    HID_MESSAGE_TYPE_HID_CONTROL,
    HID_MESSAGE_TYPE_RESERVED_2,
    HID_MESSAGE_TYPE_RESERVED_3,
    HID_MESSAGE_TYPE_GET_REPORT,
    HID_MESSAGE_TYPE_SET_REPORT,
    HID_MESSAGE_TYPE_GET_PROTOCOL,
    HID_MESSAGE_TYPE_SET_PROTOCOL,
    HID_MESSAGE_TYPE_GET_IDLE_DEPRECATED,
    HID_MESSAGE_TYPE_SET_IDLE_DEPRECATED,
    HID_MESSAGE_TYPE_DATA,
    HID_MESSAGE_TYPE_DATC_DEPRECATED
} hid_message_type_t;

typedef enum {
    HID_HANDSHAKE_PARAM_TYPE_SUCCESSFUL = 0x00,        // This code is used to acknowledge requests. A device that has correctly received SET_REPORT, SET_IDLE or SET_PROTOCOL payload transmits an acknowledgment to the host.
    HID_HANDSHAKE_PARAM_TYPE_NOT_READY,                // This code indicates that a device is too busy to accept data. The Bluetooth HID Host should retransmit the data the next time it communicates with the device.
    HID_HANDSHAKE_PARAM_TYPE_ERR_INVALID_REPORT_ID,    // Invalid report ID transmitted.
    HID_HANDSHAKE_PARAM_TYPE_ERR_UNSUPPORTED_REQUEST,  // The device does not support the request. This result code shall be used if the HIDP message type is unsupported.
    HID_HANDSHAKE_PARAM_TYPE_ERR_INVALID_PARAMETER,    // A parameter value is out of range or inappropriate for the request.
    HID_HANDSHAKE_PARAM_TYPE_ERR_UNKNOWN = 0x0E        // Device could not identify the error condition. 0xF = ERR_FATAL. Restart is essential to resume functionality.
} hid_handshake_param_type_t;

typedef enum {
    HID_CONTROL_PARAM_NOP_DEPRECATED = 0,              // Deprecated: No Operation.
    HID_CONTROL_PARAM_HARD_RESET_DEPRECATED,           // Deprecated: Device performs Power On System Test (POST) then initializes all internal variables and initiates normal operations.
    HID_CONTROL_PARAM_SOFT_RESET_DEPRECATED,           // Deprecated: Device initializes all internal variables and initiates normal operations.
    HID_CONTROL_PARAM_SUSPEND = 0x03,                  // Go to reduced power mode.
    HID_CONTROL_PARAM_EXIT_SUSPEND,                    // Exit reduced power mode.
    HID_CONTROL_PARAM_VIRTUAL_CABLE_UNPLUG
} hid_control_param_t;

typedef enum {
    HID_REPORT_TYPE_RESERVED = 0,
    HID_REPORT_TYPE_INPUT,
    HID_REPORT_TYPE_OUTPUT,
    HID_REPORT_TYPE_FEATURE
} hid_report_type_t;


/**
 * @brief Create HID Device SDP service record.
 * @param service Empty buffer in which a new service record will be stored.
 * @param have_remote_audio_control
 * @param service
 * @param service_record_handle
 * @param hid_device_subclass
 * @param hid_country_code
 * @param hid_virtual_cable
 * @param hid_reconnect_initiate
 * @param hid_boot_device
 * @param hid_descriptor
 * @param hid_descriptor_size size of hid_descriptor
 * @param device_name
 */
void hid_create_sdp_record(
    uint8_t *       service,
    uint32_t        service_record_handle,
    uint16_t        hid_device_subclass,
    uint8_t         hid_country_code,
    uint8_t         hid_virtual_cable,
    uint8_t         hid_reconnect_initiate,
    uint8_t         hid_boot_device,
    const uint8_t * hid_descriptor,
    uint16_t 		hid_descriptor_size,
    const char *    device_name);


/**
 * @brief Set up HID Device
 */
void hid_device_init(void);

/**
 * @brief Register callback for the HID Device client.
 * @param callback
 */
void hid_device_register_packet_handler(btstack_packet_handler_t callback);

/**
 * @brief Register callback for the HID Device client.
 * @param callback
 */
void hid_device_register_report_request_callback(hid_handshake_param_type_t (*callback) (uint16_t hid_cid, hid_report_type_t report_type, uint16_t report_id, uint8_t report_max_size, int * out_report_size, uint8_t * out_report));

/*
 * @brief Create HID connection to HID Host
 * @param addr
 * @param hid_cid to use for other commands
 * @result status
 */
uint8_t hid_device_connect(bd_addr_t addr, uint16_t * hid_cid);

/*
 * @brief Disconnect from HID Host
 * @param hid_cid
 */
void hid_device_disconnect(uint16_t hid_cid);

/**
 * @brief Request can send now event to send HID Report
 * Generates an HID_SUBEVENT_CAN_SEND_NOW subevent
 * @param hid_cid
 */
void hid_device_request_can_send_now_event(uint16_t hid_cid);

/**
 * @brief Send HID messageon interrupt channel
 * @param hid_cid
 */
void hid_device_send_interrupt_message(uint16_t hid_cid, const uint8_t * message, uint16_t message_len);

/**
 * @brief Send HID messageon control channel
 * @param hid_cid
 */
void hid_device_send_control_message(uint16_t hid_cid, const uint8_t * message, uint16_t message_len);


/* API_END */

/* Only needed for PTS Testing */
void hid_device_disconnect_interrupt_channel(uint16_t hid_cid);
void hid_device_disconnect_control_channel(uint16_t hid_cid);

#if defined __cplusplus
}
#endif

#endif