1 /* 2 * Copyright (C) 2021 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 /** 39 * @title Human Interface Device (HID) 40 * 41 */ 42 43 #ifndef HID_H 44 #define HID_H 45 46 #if defined __cplusplus 47 extern "C" { 48 #endif 49 50 51 #include <stdint.h> 52 53 #define HID_BOOT_MODE_KEYBOARD_ID 1 54 #define HID_BOOT_MODE_MOUSE_ID 2 55 56 // used to indicate that no 8-bit Report ID has been set / is used 57 #define HID_REPORT_ID_UNDEFINED 0xffff 58 59 typedef enum { 60 HID_MESSAGE_TYPE_HANDSHAKE = 0, 61 HID_MESSAGE_TYPE_HID_CONTROL, 62 HID_MESSAGE_TYPE_RESERVED_2, 63 HID_MESSAGE_TYPE_RESERVED_3, 64 HID_MESSAGE_TYPE_GET_REPORT, 65 HID_MESSAGE_TYPE_SET_REPORT, 66 HID_MESSAGE_TYPE_GET_PROTOCOL, 67 HID_MESSAGE_TYPE_SET_PROTOCOL, 68 HID_MESSAGE_TYPE_GET_IDLE_DEPRECATED, 69 HID_MESSAGE_TYPE_SET_IDLE_DEPRECATED, 70 HID_MESSAGE_TYPE_DATA, 71 HID_MESSAGE_TYPE_DATC_DEPRECATED 72 } hid_message_type_t; 73 74 typedef enum { 75 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. 76 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. 77 HID_HANDSHAKE_PARAM_TYPE_ERR_INVALID_REPORT_ID, // Invalid report ID transmitted. 78 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. 79 HID_HANDSHAKE_PARAM_TYPE_ERR_INVALID_PARAMETER, // A parameter value is out of range or inappropriate for the request. 80 HID_HANDSHAKE_PARAM_TYPE_ERR_UNKNOWN = 0x0E, // Device could not identify the error condition. 81 HID_HANDSHAKE_PARAM_TYPE_ERR_FATAL = 0x0F, // Restart is essential to resume functionality 82 // BTstack custom error codes 83 HID_HANDSHAKE_PARAM_TYPE_ERR_DISCONNECT 84 } hid_handshake_param_type_t; 85 86 typedef enum { 87 HID_CONTROL_PARAM_NOP_DEPRECATED = 0, // Deprecated: No Operation. 88 HID_CONTROL_PARAM_HARD_RESET_DEPRECATED, // Deprecated: Device performs Power On System Test (POST) then initializes all internal variables and initiates normal operations. 89 HID_CONTROL_PARAM_SOFT_RESET_DEPRECATED, // Deprecated: Device initializes all internal variables and initiates normal operations. 90 HID_CONTROL_PARAM_SUSPEND = 0x03, // Go to reduced power mode. 91 HID_CONTROL_PARAM_EXIT_SUSPEND, // Exit reduced power mode. 92 HID_CONTROL_PARAM_VIRTUAL_CABLE_UNPLUG 93 } hid_control_param_t; 94 95 typedef enum { 96 HID_PROTOCOL_MODE_BOOT = 0, 97 HID_PROTOCOL_MODE_REPORT, 98 99 // the following item is only used for API calls in hid_host.h: hid_host_connect, hid_host_accept_connection 100 // in contrast to previous two enum items that will enforce given mode, this one enables fallback from report to boot mode 101 HID_PROTOCOL_MODE_REPORT_WITH_FALLBACK_TO_BOOT 102 } hid_protocol_mode_t; 103 104 typedef enum { 105 HID_REPORT_TYPE_RESERVED = 0, 106 HID_REPORT_TYPE_INPUT, 107 HID_REPORT_TYPE_OUTPUT, 108 HID_REPORT_TYPE_FEATURE 109 } hid_report_type_t; 110 111 typedef enum { 112 HID_REPORT_ID_UNDECLARED, 113 HID_REPORT_ID_VALID, 114 HID_REPORT_ID_INVALID 115 } hid_report_id_status_t; 116 117 /* API_START */ 118 119 /* 120 * @brief Get boot descriptor data 121 * @result data 122 */ 123 const uint8_t * btstack_hid_get_boot_descriptor_data(void); 124 125 /* 126 * @brief Get boot descriptor length 127 * @result length 128 */ 129 uint16_t btstack_hid_get_boot_descriptor_len(void); 130 131 /* API_END */ 132 133 #if defined __cplusplus 134 } 135 #endif 136 137 #endif 138