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esp-idf/components/esp_hid/private/esp_bt_hh_api.h
Hristo Gochkov 25281ef4de Add HID Support to IDF 
- Adds HID Host support in Buedroid
- Adds BLE HID Host and Device support
- Adds some general HID utilities and definitions to help integrate with other stacks and native USB
2020-04-29 17:24:01 +08:00

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/******************************************************************************
*
* Copyright (C) 2005-2012 Broadcom Corporation
*
* 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_BT_HH_API_H_
#define _ESP_BT_HH_API_H_
#include "esp_err.h"
#include "esp_bt_defs.h"
/*****************************************************************************
** Constants and Type Definitions
*****************************************************************************/
#ifndef BTA_HH_DEBUG
#define BTA_HH_DEBUG TRUE
#endif
#ifndef BTA_HH_SSR_MAX_LATENCY_DEF
#define BTA_HH_SSR_MAX_LATENCY_DEF 800 /* 500 ms*/
#endif
#ifndef BTA_HH_SSR_MIN_TOUT_DEF
#define BTA_HH_SSR_MIN_TOUT_DEF 2
#endif
/* defined the minimum offset */
#define BTA_HH_MIN_OFFSET L2CAP_MIN_OFFSET+1
/* HID_HOST_MAX_DEVICES can not exceed 15 for th design of BTA HH */
#define BTA_HH_IDX_INVALID 0xff
#define BTA_HH_MAX_KNOWN HID_HOST_MAX_DEVICES
/* Security Service Levels [bit mask] (BTM_SetSecurityLevel)
** Encryption should not be used without authentication
*/
#define BTM_SEC_NONE 0x0000 /* Nothing required */
#define BTM_SEC_IN_AUTHORIZE 0x0001 /* Inbound call requires authorization */
#define BTM_SEC_IN_AUTHENTICATE 0x0002 /* Inbound call requires authentication */
#define BTM_SEC_IN_ENCRYPT 0x0004 /* Inbound call requires encryption */
#define BTM_SEC_OUT_AUTHORIZE 0x0008 /* Outbound call requires authorization */
#define BTM_SEC_OUT_AUTHENTICATE 0x0010 /* Outbound call requires authentication */
#define BTM_SEC_OUT_ENCRYPT 0x0020 /* Outbound call requires encryption */
#define BTM_SEC_MODE4_LEVEL4 0x0040 /* Secure Connections Only Mode */
#define BTM_SEC_FORCE_MASTER 0x0100 /* Need to switch connection to be master */
#define BTM_SEC_ATTEMPT_MASTER 0x0200 /* Try to switch connection to be master */
#define BTM_SEC_FORCE_SLAVE 0x0400 /* Need to switch connection to be master */
#define BTM_SEC_ATTEMPT_SLAVE 0x0800 /* Try to switch connection to be slave */
#define BTM_SEC_IN_MITM 0x1000 /* inbound Do man in the middle protection */
#define BTM_SEC_OUT_MITM 0x2000 /* outbound Do man in the middle protection */
#define BTM_SEC_IN_MIN_16_DIGIT_PIN 0x4000 /* enforce a minimum of 16 digit for sec mode 2 */
/* Security Setting Mask */
#define BTA_SEC_NONE BTM_SEC_NONE /* No security. */
#define BTA_SEC_AUTHORIZE (BTM_SEC_IN_AUTHORIZE ) /* Authorization required (only needed for out going connection )*/
#define BTA_SEC_AUTHENTICATE (BTM_SEC_IN_AUTHENTICATE | BTM_SEC_OUT_AUTHENTICATE) /* Authentication required. */
#define BTA_SEC_ENCRYPT (BTM_SEC_IN_ENCRYPT | BTM_SEC_OUT_ENCRYPT) /* Encryption required. */
#define BTA_SEC_MODE4_LEVEL4 (BTM_SEC_MODE4_LEVEL4) /* Mode 4 level 4 service, i.e. incoming/outgoing MITM and P-256 encryption */
#define BTA_SEC_MITM (BTM_SEC_IN_MITM | BTM_SEC_OUT_MITM) /* Man-In-The_Middle protection */
#define BTA_SEC_IN_16_DIGITS (BTM_SEC_IN_MIN_16_DIGIT_PIN) /* Min 16 digit for pin code */
#if (defined BTA_HH_LE_INCLUDED && BTA_HH_LE_INCLUDED == TRUE)
/* GATT_MAX_PHY_CHANNEL can not exceed 14 for the design of BTA HH */
#define BTA_HH_LE_MAX_KNOWN GATT_MAX_PHY_CHANNEL
#define BTA_HH_MAX_DEVICE (HID_HOST_MAX_DEVICES + GATT_MAX_PHY_CHANNEL)
#else
#define BTA_HH_MAX_DEVICE HID_HOST_MAX_DEVICES
#endif
/* invalid device handle */
#define BTA_HH_INVALID_HANDLE 0xff
#define BTA_HH_SSR_PARAM_INVALID HID_SSR_PARAM_INVALID
/* id DI is not existing in remote device, vendor_id in tBTA_HH_DEV_DSCP_INFO will be set to 0xffff */
#define BTA_HH_VENDOR_ID_INVALID 0xffff
/* application ID(none-zero) for each type of device */
#define BTA_HH_APP_ID_MI 1
#define BTA_HH_APP_ID_KB 2
#define BTA_HH_APP_ID_RMC 3
#define BTA_HH_APP_ID_3DSG 4
#define BTA_HH_APP_ID_JOY 5
#define BTA_HH_APP_ID_GPAD 6
#define BTA_HH_APP_ID_LE 0xff
/* type of devices, bit mask */
#define BTA_HH_DEVT_UNKNOWN 0x00
#define BTA_HH_DEVT_JOS 0x01 /* joy stick */
#define BTA_HH_DEVT_GPD 0x02 /* game pad */
#define BTA_HH_DEVT_RMC 0x03 /* remote control */
#define BTA_HH_DEVT_SED 0x04 /* sensing device */
#define BTA_HH_DEVT_DGT 0x05 /* Digitizer tablet */
#define BTA_HH_DEVT_CDR 0x06 /* card reader */
#define BTA_HH_DEVT_KBD 0x10 /* keyboard */
#define BTA_HH_DEVT_MIC 0x20 /* pointing device */
#define BTA_HH_DEVT_COM 0x30 /* Combo keyboard/pointing */
#define BTA_HH_DEVT_OTHER 0x80
typedef uint8_t tBTA_HH_DEVT;
/* BTA HID Host callback events */
#define BTA_HH_ENABLE_EVT 0 /* HH enabled */
#define BTA_HH_DISABLE_EVT 1 /* HH disabled */
#define BTA_HH_OPEN_EVT 2 /* connection opened */
#define BTA_HH_CLOSE_EVT 3 /* connection closed */
#define BTA_HH_GET_RPT_EVT 4 /* BTA_HhGetReport callback */
#define BTA_HH_SET_RPT_EVT 5 /* BTA_HhSetReport callback */
#define BTA_HH_GET_PROTO_EVT 6 /* BTA_GetProtoMode callback */
#define BTA_HH_SET_PROTO_EVT 7 /* BTA_HhSetProtoMode callback */
#define BTA_HH_GET_IDLE_EVT 8 /* BTA_HhGetIdle comes callback */
#define BTA_HH_SET_IDLE_EVT 9 /* BTA_HhSetIdle finish callback */
#define BTA_HH_GET_DSCP_EVT 10 /* Get report descriptor */
#define BTA_HH_ADD_DEV_EVT 11 /* Add Device callback */
#define BTA_HH_RMV_DEV_EVT 12 /* remove device finished */
#define BTA_HH_VC_UNPLUG_EVT 13 /* virtually unplugged */
#define BTA_HH_DATA_EVT 15
#define BTA_HH_API_ERR_EVT 16 /* API error is caught */
#define BTA_HH_UPDATE_SCPP_EVT 17 /* update scan paramter complete */
typedef uint16_t tBTA_HH_EVT;
/* type of protocol mode */
#define BTA_HH_PROTO_RPT_MODE (0x00)
#define BTA_HH_PROTO_BOOT_MODE (0x01)
#define BTA_HH_PROTO_UNKNOWN (0xff)
typedef uint8_t tBTA_HH_PROTO_MODE;
#define BTA_HH_VIRTUAL_CABLE HID_VIRTUAL_CABLE
#define BTA_HH_NORMALLY_CONNECTABLE HID_NORMALLY_CONNECTABLE
#define BTA_HH_RECONN_INIT HID_RECONN_INIT
#define BTA_HH_SDP_DISABLE HID_SDP_DISABLE
#define BTA_HH_BATTERY_POWER HID_BATTERY_POWER
#define BTA_HH_REMOTE_WAKE HID_REMOTE_WAKE
#define BTA_HH_SUP_TOUT_AVLBL HID_SUP_TOUT_AVLBL
#define BTA_HH_SEC_REQUIRED HID_SEC_REQUIRED
typedef uint16_t tBTA_HH_ATTR_MASK;
enum {
BTA_HH_OK,
BTA_HH_HS_HID_NOT_READY, /* handshake error : device not ready */
BTA_HH_HS_INVALID_RPT_ID, /* handshake error : invalid report ID */
BTA_HH_HS_TRANS_NOT_SPT, /* handshake error : transaction not spt */
BTA_HH_HS_INVALID_PARAM, /* handshake error : invalid paremter */
BTA_HH_HS_ERROR, /* handshake error : unspecified HS error */
BTA_HH_ERR, /* general BTA HH error */
BTA_HH_ERR_SDP, /* SDP error */
BTA_HH_ERR_PROTO, /* SET_Protocol error, only used in BTA_HH_OPEN_EVT callback */
BTA_HH_ERR_DB_FULL, /* device database full error, used in BTA_HH_OPEN_EVT/BTA_HH_ADD_DEV_EVT */
BTA_HH_ERR_TOD_UNSPT, /* type of device not supported */
BTA_HH_ERR_NO_RES, /* out of system resources */
BTA_HH_ERR_AUTH_FAILED, /* authentication fail */
BTA_HH_ERR_HDL,
BTA_HH_ERR_SEC
};
typedef uint8_t tBTA_HH_STATUS;
enum {
BTA_HH_RPTT_RESRV, /* reserved */
BTA_HH_RPTT_INPUT, /* input report */
BTA_HH_RPTT_OUTPUT, /* output report */
BTA_HH_RPTT_FEATURE /* feature report */
};
typedef uint8_t tBTA_HH_RPT_TYPE;
/* HID_CONTROL operation code used in BTA_HhSendCtrl()
*/
enum {
BTA_HH_CTRL_NOP = 0, /* mapping from BTE */
BTA_HH_CTRL_HARD_RESET, /* hard reset */
BTA_HH_CTRL_SOFT_RESET, /* soft reset */
BTA_HH_CTRL_SUSPEND, /* enter suspend */
BTA_HH_CTRL_EXIT_SUSPEND, /* exit suspend */
BTA_HH_CTRL_VIRTUAL_CABLE_UNPLUG /* virtual unplug */
};
typedef uint8_t tBTA_HH_TRANS_CTRL_TYPE;
typedef struct desc_info {
uint16_t dl_len;
uint8_t *dsc_list;
} tBTA_HH_DEV_DESCR;
/* Define the header of each buffer used in the Bluetooth stack. */
typedef struct {
uint16_t event;
uint16_t len;
uint16_t offset;
uint16_t layer_specific;
uint8_t data[];
} BT_HDR;
#define BT_HDR_SIZE (sizeof (BT_HDR))
/* callback event data for BTA_HH_OPEN_EVT */
typedef struct {
esp_bd_addr_t bda; /* HID device bd address */
tBTA_HH_STATUS status; /* operation status */
uint8_t handle; /* device handle */
} tBTA_HH_CONN;
typedef tBTA_HH_CONN tBTA_HH_DEV_INFO;
/* callback event data */
typedef struct {
tBTA_HH_STATUS status; /* operation status */
uint8_t handle; /* device handle */
} tBTA_HH_CBDATA;
/* report descriptor information */
typedef struct {
uint16_t vendor_id; /* vendor ID */
uint16_t product_id; /* product ID */
uint16_t version; /* version */
uint16_t ssr_max_latency;/* SSR max latency, BTA_HH_SSR_PARAM_INVALID if unknown */
uint16_t ssr_min_tout; /* SSR min timeout, BTA_HH_SSR_PARAM_INVALID if unknown */
uint8_t ctry_code; /*Country Code.*/
tBTA_HH_DEV_DESCR descriptor;
} tBTA_HH_DEV_DSCP_INFO;
/* handshake data */
typedef struct {
tBTA_HH_STATUS status; /* handshake status */
uint8_t handle; /* device handle */
union {
tBTA_HH_PROTO_MODE proto_mode; /* GET_PROTO_EVT :protocol mode */
BT_HDR *p_rpt_data;/* GET_RPT_EVT : report data */
uint8_t idle_rate; /* GET_IDLE_EVT : idle rate */
} rsp_data;
} tBTA_HH_HSDATA;
/* union of data associated with HD callback */
typedef union {
tBTA_HH_DEV_INFO dev_info; /* BTA_HH_ADD_DEV_EVT, BTA_HH_RMV_DEV_EVT */
tBTA_HH_CONN conn; /* BTA_HH_OPEN_EVT */
tBTA_HH_CBDATA dev_status; /* BTA_HH_CLOSE_EVT,
BTA_HH_SET_PROTO_EVT
BTA_HH_SET_RPT_EVT
BTA_HH_SET_IDLE_EVT
BTA_HH_UPDATE_SCPP_EVT */
tBTA_HH_STATUS status; /* BTA_HH_ENABLE_EVT */
tBTA_HH_DEV_DSCP_INFO dscp_info; /* BTA_HH_GET_DSCP_EVT */
tBTA_HH_HSDATA hs_data; /* GET_ transaction callback
BTA_HH_GET_RPT_EVT
BTA_HH_GET_PROTO_EVT
BTA_HH_GET_IDLE_EVT */
} tBTA_HH;
/* BTA HH callback function */
typedef void (tBTA_HH_CBACK) (tBTA_HH_EVT event, tBTA_HH *p_data);
/*****************************************************************************
** External Function Declarations
*****************************************************************************/
#ifdef __cplusplus
extern "C"
{
#endif
/* This function enable HID host and registers HID-Host with lower layers.*/
extern void BTA_HhEnable(uint16_t sec_mask, tBTA_HH_CBACK *p_cback);
/* This function is called when the host is about power down. */
extern void BTA_HhDisable(void);
/* This function is called to start an inquiry and read SDP record of responding devices; connect to a device if only one active HID device is found. */
extern void BTA_HhOpen (esp_bd_addr_t dev_bda, uint8_t bd_type, tBTA_HH_PROTO_MODE mode, uint16_t sec_mask);
/* This function disconnects the device. */
extern void BTA_HhClose(uint8_t dev_handle);
/* This function set the protocol mode at specified HID handle */
extern void BTA_HhSetProtoMode(uint8_t handle, tBTA_HH_PROTO_MODE t_type);
/* This function get the protocol mode of a specified HID device. */
extern void BTA_HhGetProtoMode(uint8_t dev_handle);
/* send SET_REPORT to device. */
extern void BTA_HhSetReport(uint8_t dev_handle, tBTA_HH_RPT_TYPE r_type, BT_HDR *p_data);
/* Send a GET_REPORT to HID device. */
extern void BTA_HhGetReport(uint8_t dev_handle, tBTA_HH_RPT_TYPE r_type, uint8_t rpt_id, uint16_t buf_size);
/* send SET_IDLE to device. */
extern void BTA_HhSetIdle(uint8_t dev_handle, uint16_t idle_rate);
/* Send a GET_IDLE to HID device. */
extern void BTA_HhGetIdle(uint8_t dev_handle);
/* Send HID_CONTROL request to a HID device. */
extern void BTA_HhSendCtrl(uint8_t dev_handle, tBTA_HH_TRANS_CTRL_TYPE c_type);
/* Send DATA transaction to a HID device. */
extern void BTA_HhSendData(uint8_t dev_handle, esp_bd_addr_t dev_bda, BT_HDR *p_buf);
/* Get report descriptor of the device */
extern void BTA_HhGetDscpInfo(uint8_t dev_handle);
/* Add a virtually cabled device into HID-Host device list to manage and assign a device handle for future API call, host applciation call this API at start-up to initialize its virtually cabled devices. */
extern void BTA_HhAddDev(esp_bd_addr_t bda, tBTA_HH_ATTR_MASK attr_mask, uint8_t sub_class, uint8_t app_id, tBTA_HH_DEV_DSCP_INFO dscp_info);
/* Remove a device from the HID host devices list. */
extern void BTA_HhRemoveDev(uint8_t dev_handle );
enum {
BTA_HH_MOD_CTRL_KEY,
BTA_HH_MOD_SHFT_KEY,
BTA_HH_MOD_ALT_KEY,
BTA_HH_MOD_GUI_KEY,
BTA_HH_MOD_MAX_KEY
};
/* parsed boot mode keyboard report */
typedef struct {
uint8_t this_char[6]; /* virtual key code */
bool mod_key[BTA_HH_MOD_MAX_KEY];/* ctrl, shift, Alt, GUI */
bool caps_lock; /* is caps locked */
bool num_lock; /* is Num key pressed */
} tBTA_HH_KEYBD_RPT;
/* parsed boot mode mouse report */
typedef struct {
uint8_t mouse_button; /* mouse button is clicked */
int8_t delta_x; /* displacement x */
int8_t delta_y; /* displacement y */
} tBTA_HH_MICE_RPT;
enum {
BTA_HH_KEYBD_RPT_ID = 1,
BTA_HH_MOUSE_RPT_ID
};
typedef uint8_t tBTA_HH_BOOT_RPT_ID;
/* parsed Boot report */
typedef struct {
tBTA_HH_BOOT_RPT_ID dev_type; /* type of device report */
union {
tBTA_HH_KEYBD_RPT keybd_rpt; /* keyboard report */
tBTA_HH_MICE_RPT mice_rpt; /* mouse report */
} data_rpt;
} tBTA_HH_BOOT_RPT;
/* This utility function parse a boot mode report. */
extern void BTA_HhParseBootRpt(tBTA_HH_BOOT_RPT *p_data, uint8_t *p_report, uint16_t report_len);
#ifdef __cplusplus
}
#endif
#endif /* _ESP_BT_HH_API_H_ */
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