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RetroArch/input/drivers_hid/btstack_hid.c
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2017-02-26 03:53:05 +01:00

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2013-2014 - Jason Fetters
* Copyright (C) 2011-2017 - Daniel De Matteis
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/sysctl.h>
#include <string.h>
#include <sys/time.h>
#ifdef __APPLE__
#include <CoreFoundation/CFRunLoop.h>
#endif
#include <boolean.h>
#include <rthreads/rthreads.h>
#ifdef HAVE_DYNAMIC
#include <dynamic/dylib.h>
#endif
#include "../input_defines.h"
#include "../input_hid_driver.h"
#define BUILDING_BTDYNAMIC
#include "../connect/joypad_connection.h"
/* Length of a Bluetooth device address. */
#define BD_ADDR_LEN 6
/* The link key type. */
#define LINK_KEY_LEN 16
/* The device name type. */
#define DEVICE_NAME_LEN 248
/* Type definitions. */
typedef uint16_t hci_con_handle_t;
typedef uint8_t bd_addr_t[BD_ADDR_LEN];
typedef uint8_t link_key_t[LINK_KEY_LEN];
typedef uint8_t device_name_t[DEVICE_NAME_LEN+1];
/* Packet handler. */
typedef void (*btstack_packet_handler_t) (uint8_t packet_type,
uint16_t channel, uint8_t *packet, uint16_t size);
/* Hardware state of Bluetooth controller */
typedef enum
{
HCI_POWER_OFF = 0,
HCI_POWER_ON,
HCI_POWER_SLEEP
} HCI_POWER_MODE;
/* State of BTstack */
typedef enum
{
HCI_STATE_OFF = 0,
HCI_STATE_INITIALIZING,
HCI_STATE_WORKING,
HCI_STATE_HALTING,
HCI_STATE_SLEEPING,
HCI_STATE_FALLING_ASLEEP
} HCI_STATE;
typedef enum
{
RUN_LOOP_POSIX = 1,
RUN_LOOP_COCOA,
RUN_LOOP_EMBEDDED
} RUN_LOOP_TYPE;
/* compact HCI Command packet description */
typedef struct
{
uint16_t opcode;
const char *format;
} hci_cmd_t;
typedef struct linked_item
{
struct linked_item *next; /* <-- next element in list, or NULL */
void *user_data; /* <-- pointer to struct base */
} linked_item_t;
typedef linked_item_t *linked_list_t;
typedef struct data_source
{
linked_item_t item;
/* File descriptor to watch or 0. */
int fd;
int (*process)(struct data_source *ds);
} data_source_t;
typedef struct timer
{
linked_item_t item;
/* Next timeout. */
struct timeval timeout;
#ifdef HAVE_TICK
/* Timeout in system ticks. */
uint32_t timeout;
#endif
void (*process)(struct timer *ts);
} timer_source_t;
/* btdynamic.h */
#ifndef BUILDING_BTDYNAMIC
#define BTDIMPORT extern
#else
#define BTDIMPORT
#endif
BTDIMPORT int (*bt_open_ptr)(void);
BTDIMPORT void (*bt_close_ptr)(void);
BTDIMPORT void (*bt_flip_addr_ptr)(bd_addr_t dest, bd_addr_t src);
BTDIMPORT char* (*bd_addr_to_str_ptr)(bd_addr_t addr);
BTDIMPORT btstack_packet_handler_t (*bt_register_packet_handler_ptr)
(btstack_packet_handler_t handler);
BTDIMPORT int (*bt_send_cmd_ptr)(const hci_cmd_t *cmd, ...);
BTDIMPORT void (*bt_send_l2cap_ptr)(uint16_t local_cid,
uint8_t *data, uint16_t len);
BTDIMPORT void (*run_loop_init_ptr)(RUN_LOOP_TYPE type);
BTDIMPORT void (*run_loop_execute_ptr)(void);
BTDIMPORT const hci_cmd_t* btstack_set_power_mode_ptr;
BTDIMPORT const hci_cmd_t* hci_delete_stored_link_key_ptr;
BTDIMPORT const hci_cmd_t* hci_disconnect_ptr;
BTDIMPORT const hci_cmd_t* hci_read_bd_addr_ptr;
BTDIMPORT const hci_cmd_t* hci_inquiry_ptr;
BTDIMPORT const hci_cmd_t* hci_inquiry_cancel_ptr;
BTDIMPORT const hci_cmd_t* hci_pin_code_request_reply_ptr;
BTDIMPORT const hci_cmd_t* hci_pin_code_request_negative_reply_ptr;
BTDIMPORT const hci_cmd_t* hci_remote_name_request_ptr;
BTDIMPORT const hci_cmd_t* hci_remote_name_request_cancel_ptr;
BTDIMPORT const hci_cmd_t* hci_write_authentication_enable_ptr;
BTDIMPORT const hci_cmd_t* hci_write_inquiry_mode_ptr;
BTDIMPORT const hci_cmd_t* l2cap_create_channel_ptr;
BTDIMPORT const hci_cmd_t* l2cap_register_service_ptr;
BTDIMPORT const hci_cmd_t* l2cap_accept_connection_ptr;
BTDIMPORT const hci_cmd_t* l2cap_decline_connection_ptr;
/* hci_cmds.h */
/**
* packet types - used in BTstack and over the H4 UART interface
*/
#define HCI_COMMAND_DATA_PACKET 0x01
#define HCI_ACL_DATA_PACKET 0x02
#define HCI_SCO_DATA_PACKET 0x03
#define HCI_EVENT_PACKET 0x04
/* extension for client/server communication */
#define DAEMON_EVENT_PACKET 0x05
/* L2CAP data */
#define L2CAP_DATA_PACKET 0x06
/* RFCOMM data */
#define RFCOMM_DATA_PACKET 0x07
/* Attribute protocol data */
#define ATT_DATA_PACKET 0x08
/* Security Manager protocol data */
#define SM_DATA_PACKET 0x09
/* debug log messages */
#define LOG_MESSAGE_PACKET 0xFC
/* Fixed PSM numbers */
#define PSM_SDP 0x01
#define PSM_RFCOMM 0x03
#define PSM_HID_CONTROL 0x11
#define PSM_HID_INTERRUPT 0x13
/* Events from host controller to host */
#define HCI_EVENT_INQUIRY_COMPLETE 0x01
#define HCI_EVENT_INQUIRY_RESULT 0x02
#define HCI_EVENT_CONNECTION_COMPLETE 0x03
#define HCI_EVENT_CONNECTION_REQUEST 0x04
#define HCI_EVENT_DISCONNECTION_COMPLETE 0x05
#define HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT 0x06
#define HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 0x07
#define HCI_EVENT_ENCRYPTION_CHANGE 0x08
#define HCI_EVENT_CHANGE_CONNECTION_LINK_KEY_COMPLETE 0x09
#define HCI_EVENT_MASTER_LINK_KEY_COMPLETE 0x0A
#define HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE 0x0B
#define HCI_EVENT_READ_REMOTE_VERSION_INFORMATION_COMPLETE 0x0C
#define HCI_EVENT_QOS_SETUP_COMPLETE 0x0D
#define HCI_EVENT_COMMAND_COMPLETE 0x0E
#define HCI_EVENT_COMMAND_STATUS 0x0F
#define HCI_EVENT_HARDWARE_ERROR 0x10
#define HCI_EVENT_FLUSH_OCCURED 0x11
#define HCI_EVENT_ROLE_CHANGE 0x12
#define HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS 0x13
#define HCI_EVENT_MODE_CHANGE_EVENT 0x14
#define HCI_EVENT_RETURN_LINK_KEYS 0x15
#define HCI_EVENT_PIN_CODE_REQUEST 0x16
#define HCI_EVENT_LINK_KEY_REQUEST 0x17
#define HCI_EVENT_LINK_KEY_NOTIFICATION 0x18
#define HCI_EVENT_DATA_BUFFER_OVERFLOW 0x1A
#define HCI_EVENT_MAX_SLOTS_CHANGED 0x1B
#define HCI_EVENT_READ_CLOCK_OFFSET_COMPLETE 0x1C
#define HCI_EVENT_PACKET_TYPE_CHANGED 0x1D
#define HCI_EVENT_INQUIRY_RESULT_WITH_RSSI 0x22
#define HCI_EVENT_EXTENDED_INQUIRY_RESPONSE 0x2F
#define HCI_EVENT_LE_META 0x3E
#define HCI_EVENT_VENDOR_SPECIFIC 0xFF
#define HCI_SUBEVENT_LE_CONNECTION_COMPLETE 0x01
#define HCI_SUBEVENT_LE_ADVERTISING_REPORT 0x02
#define HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE 0x03
#define HCI_SUBEVENT_LE_READ_REMOTE_USED_FEATURES_COMPLETE 0x04
#define HCI_SUBEVENT_LE_LONG_TERM_KEY_REQUEST 0x05
/* last used HCI_EVENT in 2.1 is 0x3d */
/* events 0x50-0x5f are used internally */
/* BTSTACK DAEMON EVENTS */
/* events from BTstack for application/client lib */
#define BTSTACK_EVENT_STATE 0x60
/* data: event(8), len(8), nr hci connections */
#define BTSTACK_EVENT_NR_CONNECTIONS_CHANGED 0x61
/* data: none */
#define BTSTACK_EVENT_POWERON_FAILED 0x62
/* data: major (8), minor (8), revision(16) */
#define BTSTACK_EVENT_VERSION 0x63
/* data: system bluetooth on/off (bool) */
#define BTSTACK_EVENT_SYSTEM_BLUETOOTH_ENABLED 0x64
/* data: event (8), len(8), status (8) == 0, address (48), name (1984 bits = 248 bytes) */
#define BTSTACK_EVENT_REMOTE_NAME_CACHED 0x65
/* data: discoverable enabled (bool) */
#define BTSTACK_EVENT_DISCOVERABLE_ENABLED 0x66
/* L2CAP EVENTS */
/* data: event (8), len(8), status (8), address(48), handle (16), psm (16), local_cid(16), remote_cid (16), local_mtu(16), remote_mtu(16) */
#define L2CAP_EVENT_CHANNEL_OPENED 0x70
/* data: event (8), len(8), channel (16) */
#define L2CAP_EVENT_CHANNEL_CLOSED 0x71
/* data: event (8), len(8), address(48), handle (16), psm (16), local_cid(16), remote_cid (16) */
#define L2CAP_EVENT_INCOMING_CONNECTION 0x72
/* data: event(8), len(8), handle(16) */
#define L2CAP_EVENT_TIMEOUT_CHECK 0x73
/* data: event(8), len(8), local_cid(16), credits(8) */
#define L2CAP_EVENT_CREDITS 0x74
/* data: event(8), len(8), status (8), psm (16) */
#define L2CAP_EVENT_SERVICE_REGISTERED 0x75
/* RFCOMM EVENTS */
// data: event(8), len(8), status (8), address (48), handle (16), server channel(8), rfcomm_cid(16), max frame size(16)
#define RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE 0x80
// data: event(8), len(8), rfcomm_cid(16)
#define RFCOMM_EVENT_CHANNEL_CLOSED 0x81
// data: event (8), len(8), address(48), channel (8), rfcomm_cid (16)
#define RFCOMM_EVENT_INCOMING_CONNECTION 0x82
// data: event (8), len(8), rfcommid (16), ...
#define RFCOMM_EVENT_REMOTE_LINE_STATUS 0x83
/* data: event(8), len(8), rfcomm_cid(16), credits(8) */
#define RFCOMM_EVENT_CREDITS 0x84
/* data: event(8), len(8), status (8), rfcomm server channel id (8) */
#define RFCOMM_EVENT_SERVICE_REGISTERED 0x85
/* data: event(8), len(8), status (8), rfcomm server channel id (8) */
#define RFCOMM_EVENT_PERSISTENT_CHANNEL 0x86
/* data: event(8), len(8), status(8), service_record_handle(32) */
#define SDP_SERVICE_REGISTERED 0x90
/* last error code in 2.1 is 0x38 - we start with 0x50 for BTstack errors */
#define BTSTACK_CONNECTION_TO_BTDAEMON_FAILED 0x50
#define BTSTACK_ACTIVATION_FAILED_SYSTEM_BLUETOOTH 0x51
#define BTSTACK_ACTIVATION_POWERON_FAILED 0x52
#define BTSTACK_ACTIVATION_FAILED_UNKNOWN 0x53
#define BTSTACK_NOT_ACTIVATED 0x54
#define BTSTACK_BUSY 0x55
#define BTSTACK_MEMORY_ALLOC_FAILED 0x56
#define BTSTACK_ACL_BUFFERS_FULL 0x57
/* L2CAP errors - enumeration by the command that created them */
#define L2CAP_COMMAND_REJECT_REASON_COMMAND_NOT_UNDERSTOOD 0x60
#define L2CAP_COMMAND_REJECT_REASON_SIGNALING_MTU_EXCEEDED 0x61
#define L2CAP_COMMAND_REJECT_REASON_INVALID_CID_IN_REQUEST 0x62
#define L2CAP_CONNECTION_RESPONSE_RESULT_SUCCESSFUL 0x63
#define L2CAP_CONNECTION_RESPONSE_RESULT_PENDING 0x64
#define L2CAP_CONNECTION_RESPONSE_RESULT_REFUSED_PSM 0x65
#define L2CAP_CONNECTION_RESPONSE_RESULT_REFUSED_SECURITY 0x66
#define L2CAP_CONNECTION_RESPONSE_RESULT_REFUSED_RESOURCES 0x65
#define L2CAP_CONFIG_RESPONSE_RESULT_SUCCESSFUL 0x66
#define L2CAP_CONFIG_RESPONSE_RESULT_UNACCEPTABLE_PARAMS 0x67
#define L2CAP_CONFIG_RESPONSE_RESULT_REJECTED 0x68
#define L2CAP_CONFIG_RESPONSE_RESULT_UNKNOWN_OPTIONS 0x69
#define L2CAP_SERVICE_ALREADY_REGISTERED 0x6a
#define RFCOMM_MULTIPLEXER_STOPPED 0x70
#define RFCOMM_CHANNEL_ALREADY_REGISTERED 0x71
#define RFCOMM_NO_OUTGOING_CREDITS 0x72
#define SDP_HANDLE_ALREADY_REGISTERED 0x80
/* Default INQ Mode
* 0x9E8B33: General/Unlimited Inquiry Access Code (GIAC)
**/
#define HCI_INQUIRY_LAP 0x9E8B33L
/* HCI Commands - see hci_cmds.c for info on parameters */
extern const hci_cmd_t btstack_get_state;
extern const hci_cmd_t btstack_set_power_mode;
extern const hci_cmd_t btstack_set_acl_capture_mode;
extern const hci_cmd_t btstack_get_version;
extern const hci_cmd_t btstack_get_system_bluetooth_enabled;
extern const hci_cmd_t btstack_set_system_bluetooth_enabled;
extern const hci_cmd_t btstack_set_discoverable;
extern const hci_cmd_t btstack_set_bluetooth_enabled; /* only used by btstack config */
extern const hci_cmd_t hci_accept_connection_request;
extern const hci_cmd_t hci_authentication_requested;
extern const hci_cmd_t hci_change_connection_link_key;
extern const hci_cmd_t hci_create_connection;
extern const hci_cmd_t hci_create_connection_cancel;
extern const hci_cmd_t hci_delete_stored_link_key;
extern const hci_cmd_t hci_disconnect;
extern const hci_cmd_t hci_host_buffer_size;
extern const hci_cmd_t hci_inquiry;
extern const hci_cmd_t hci_inquiry_cancel;
extern const hci_cmd_t hci_link_key_request_negative_reply;
extern const hci_cmd_t hci_link_key_request_reply;
extern const hci_cmd_t hci_pin_code_request_reply;
extern const hci_cmd_t hci_pin_code_request_negative_reply;
extern const hci_cmd_t hci_qos_setup;
extern const hci_cmd_t hci_read_bd_addr;
extern const hci_cmd_t hci_read_buffer_size;
extern const hci_cmd_t hci_read_le_host_supported;
extern const hci_cmd_t hci_read_link_policy_settings;
extern const hci_cmd_t hci_read_link_supervision_timeout;
extern const hci_cmd_t hci_read_local_supported_features;
extern const hci_cmd_t hci_read_num_broadcast_retransmissions;
extern const hci_cmd_t hci_reject_connection_request;
extern const hci_cmd_t hci_remote_name_request;
extern const hci_cmd_t hci_remote_name_request_cancel;
extern const hci_cmd_t hci_reset;
extern const hci_cmd_t hci_role_discovery;
extern const hci_cmd_t hci_set_event_mask;
extern const hci_cmd_t hci_set_connection_encryption;
extern const hci_cmd_t hci_sniff_mode;
extern const hci_cmd_t hci_switch_role_command;
extern const hci_cmd_t hci_write_authentication_enable;
extern const hci_cmd_t hci_write_class_of_device;
extern const hci_cmd_t hci_write_extended_inquiry_response;
extern const hci_cmd_t hci_write_inquiry_mode;
extern const hci_cmd_t hci_write_le_host_supported;
extern const hci_cmd_t hci_write_link_policy_settings;
extern const hci_cmd_t hci_write_link_supervision_timeout;
extern const hci_cmd_t hci_write_local_name;
extern const hci_cmd_t hci_write_num_broadcast_retransmissions;
extern const hci_cmd_t hci_write_page_timeout;
extern const hci_cmd_t hci_write_scan_enable;
extern const hci_cmd_t hci_write_simple_pairing_mode;
extern const hci_cmd_t hci_le_add_device_to_whitelist;
extern const hci_cmd_t hci_le_clear_white_list;
extern const hci_cmd_t hci_le_connection_update;
extern const hci_cmd_t hci_le_create_connection;
extern const hci_cmd_t hci_le_create_connection_cancel;
extern const hci_cmd_t hci_le_encrypt;
extern const hci_cmd_t hci_le_long_term_key_negative_reply;
extern const hci_cmd_t hci_le_long_term_key_request_reply;
extern const hci_cmd_t hci_le_rand;
extern const hci_cmd_t hci_le_read_advertising_channel_tx_power;
extern const hci_cmd_t hci_le_read_buffer_size ;
extern const hci_cmd_t hci_le_read_channel_map;
extern const hci_cmd_t hci_le_read_remote_used_features;
extern const hci_cmd_t hci_le_read_supported_features;
extern const hci_cmd_t hci_le_read_supported_states;
extern const hci_cmd_t hci_le_read_white_list_size;
extern const hci_cmd_t hci_le_receiver_test;
extern const hci_cmd_t hci_le_remove_device_from_whitelist;
extern const hci_cmd_t hci_le_set_advertise_enable;
extern const hci_cmd_t hci_le_set_advertising_data;
extern const hci_cmd_t hci_le_set_advertising_parameters;
extern const hci_cmd_t hci_le_set_event_mask;
extern const hci_cmd_t hci_le_set_host_channel_classification;
extern const hci_cmd_t hci_le_set_random_address;
extern const hci_cmd_t hci_le_set_scan_enable;
extern const hci_cmd_t hci_le_set_scan_parameters;
extern const hci_cmd_t hci_le_set_scan_response_data;
extern const hci_cmd_t hci_le_start_encryption;
extern const hci_cmd_t hci_le_test_end;
extern const hci_cmd_t hci_le_transmitter_test;
extern const hci_cmd_t l2cap_accept_connection;
extern const hci_cmd_t l2cap_create_channel;
extern const hci_cmd_t l2cap_create_channel_mtu;
extern const hci_cmd_t l2cap_decline_connection;
extern const hci_cmd_t l2cap_disconnect;
extern const hci_cmd_t l2cap_register_service;
extern const hci_cmd_t l2cap_unregister_service;
extern const hci_cmd_t sdp_register_service_record;
extern const hci_cmd_t sdp_unregister_service_record;
/* accept connection @param bd_addr(48), rfcomm_cid (16) */
extern const hci_cmd_t rfcomm_accept_connection;
/* create rfcomm channel: @param bd_addr(48), channel (8) */
extern const hci_cmd_t rfcomm_create_channel;
/* create rfcomm channel: @param bd_addr(48), channel (8), mtu (16), credits (8) */
extern const hci_cmd_t rfcomm_create_channel_with_initial_credits;
/* decline rfcomm disconnect,@param bd_addr(48), rfcomm cid (16), reason(8) */
extern const hci_cmd_t rfcomm_decline_connection;
/* disconnect rfcomm disconnect, @param rfcomm_cid(8), reason(8) */
extern const hci_cmd_t rfcomm_disconnect;
/* register rfcomm service: @param channel(8), mtu (16) */
extern const hci_cmd_t rfcomm_register_service;
/* register rfcomm service: @param channel(8), mtu (16), initial credits (8) */
extern const hci_cmd_t rfcomm_register_service_with_initial_credits;
/* unregister rfcomm service, @param service_channel(16) */
extern const hci_cmd_t rfcomm_unregister_service;
/* request persisten rfcomm channel for service name: serive name (char*) */
extern const hci_cmd_t rfcomm_persistent_channel_for_service;
/* linked_list.h */
void linked_item_set_user(linked_item_t *item, void *user_data);
void * linked_item_get_user(linked_item_t *item);
int linked_list_empty(linked_list_t * list);
void linked_list_add(linked_list_t * list, linked_item_t *item);
void linked_list_add_tail(linked_list_t * list, linked_item_t *item);
int linked_list_remove(linked_list_t * list, linked_item_t *item);
linked_item_t * linked_list_get_last_item(linked_list_t * list);
void test_linked_list(void);
/* run_loop.h */
/* Set timer based on current time in milliseconds. */
void run_loop_set_timer(timer_source_t *a, uint32_t timeout_in_ms);
/* Set callback that will be executed when timer expires. */
void run_loop_set_timer_handler(timer_source_t *ts,
void (*process)(timer_source_t *_ts));
/* Add timer source. */
void run_loop_add_timer(timer_source_t *timer);
/* Remove timer source. */
int run_loop_remove_timer(timer_source_t *timer);
/* Init must be called before any other run_loop call.
* Use RUN_LOOP_EMBEDDED for embedded devices.
*/
void run_loop_init(RUN_LOOP_TYPE type);
/* Set data source callback. */
void run_loop_set_data_source_handler(data_source_t *ds,
int (*process)(data_source_t *_ds));
/* Add data source. */
void run_loop_add_data_source(data_source_t *dataSource);
/* Remove data source. */
int run_loop_remove_data_source(data_source_t *dataSource);
/* Execute configured run loop.
* This function does not return. */
void run_loop_execute(void);
/* Hack to fix HCI timer handling. */
#ifdef HAVE_TICK
/* Sets how many milliseconds has one tick. */
uint32_t embedded_ticks_for_ms(uint32_t time_in_ms);
/* Queries the current time in ticks. */
uint32_t embedded_get_ticks(void);
#endif
/* utils.h */
/* Connection handle type. */
/* helper for BT little endian format. */
#define READ_BT_16( buffer, pos) ( ((uint16_t) buffer[pos]) | (((uint16_t)buffer[pos+1]) << 8))
#define READ_BT_24( buffer, pos) ( ((uint32_t) buffer[pos]) | (((uint32_t)buffer[pos+1]) << 8) | (((uint32_t)buffer[pos+2]) << 16))
#define READ_BT_32( buffer, pos) ( ((uint32_t) buffer[pos]) | (((uint32_t)buffer[pos+1]) << 8) | (((uint32_t)buffer[pos+2]) << 16) | (((uint32_t) buffer[pos+3])) << 24)
/* helper for SDP big endian format. */
#define READ_NET_16( buffer, pos) ( ((uint16_t) buffer[pos+1]) | (((uint16_t)buffer[pos ]) << 8))
#define READ_NET_32( buffer, pos) ( ((uint32_t) buffer[pos+3]) | (((uint32_t)buffer[pos+2]) << 8) | (((uint32_t)buffer[pos+1]) << 16) | (((uint32_t) buffer[pos])) << 24)
/* HCI CMD OGF/OCF. */
#define READ_CMD_OGF(buffer) (buffer[1] >> 2)
#define READ_CMD_OCF(buffer) ((buffer[1] & 0x03) << 8 | buffer[0])
/* Check if command complete event for given command. */
#define COMMAND_COMPLETE_EVENT(event,cmd) ( event[0] == HCI_EVENT_COMMAND_COMPLETE && READ_BT_16(event,3) == cmd.opcode)
#define COMMAND_STATUS_EVENT(event,cmd) ( event[0] == HCI_EVENT_COMMAND_STATUS && READ_BT_16(event,4) == cmd.opcode)
/* Code+Len=2, Pkts+Opcode=3; total=5 */
#define OFFSET_OF_DATA_IN_COMMAND_COMPLETE 5
/* ACL Packet. */
#define READ_ACL_CONNECTION_HANDLE( buffer ) ( READ_BT_16(buffer,0) & 0x0fff)
#define READ_ACL_FLAGS( buffer ) ( buffer[1] >> 4 )
#define READ_ACL_LENGTH( buffer ) (READ_BT_16(buffer, 2))
/* L2CAP Packet. */
#define READ_L2CAP_LENGTH(buffer) ( READ_BT_16(buffer, 4))
#define READ_L2CAP_CHANNEL_ID(buffer) ( READ_BT_16(buffer, 6))
#define BD_ADDR_CMP(a,b) memcmp(a,b, BD_ADDR_LEN)
#define BD_ADDR_COPY(dest,src) memcpy(dest,src,BD_ADDR_LEN)
void bt_store_16(uint8_t *buffer, uint16_t pos, uint16_t value);
void bt_store_32(uint8_t *buffer, uint16_t pos, uint32_t value);
void bt_flip_addr(bd_addr_t dest, bd_addr_t src);
void net_store_16(uint8_t *buffer, uint16_t pos, uint16_t value);
void net_store_32(uint8_t *buffer, uint16_t pos, uint32_t value);
void hexdump(void *data, int size);
void printUUID(uint8_t *uuid);
/* Deprecated - please use more convenient bd_addr_to_str. */
void print_bd_addr( bd_addr_t addr);
char * bd_addr_to_str(bd_addr_t addr);
int sscan_bd_addr(uint8_t * addr_string, bd_addr_t addr);
uint8_t crc8_check(uint8_t *data, uint16_t len, uint8_t check_sum);
uint8_t crc8_calc(uint8_t *data, uint16_t len);
/* btstack.h */
/* Default TCP port for BTstack daemon. */
#define BTSTACK_PORT 13333
/* UNIX domain socket for BTstack. */
#define BTSTACK_UNIX "/tmp/BTstack"
/* Optional
*
* If called before bt_open, TCP socket is used
* instead of local UNIX socket.
*
* note: Address is not copied and must be
* valid during bt_open.
*/
void bt_use_tcp(const char * address, uint16_t port);
/* Init BTstack library. */
int bt_open(void);
/* Stop using BTstack library. */
int bt_close(void);
/* Send HCI cmd packet. */
int bt_send_cmd(const hci_cmd_t *cmd, ...);
/* Register packet handler -- channel only valid
for L2CAP and RFCOMM packets.
*/
btstack_packet_handler_t bt_register_packet_handler(
btstack_packet_handler_t handler);
void bt_send_acl(uint8_t * data, uint16_t len);
void bt_send_l2cap(uint16_t local_cid, uint8_t *data, uint16_t len);
void bt_send_rfcomm(uint16_t rfcom_cid, uint8_t *data, uint16_t len);
/* custom functions */
joypad_connection_t *slots;
typedef struct btstack_hid
{
joypad_connection_t *slots;
} btstack_hid_t;
enum btpad_state
{
BTPAD_EMPTY = 0,
BTPAD_CONNECTING,
BTPAD_CONNECTED
};
struct btpad_queue_command
{
const hci_cmd_t* command;
union
{
struct
{
uint8_t on;
} btstack_set_power_mode;
struct
{
uint16_t handle;
uint8_t reason;
} hci_disconnect;
struct
{
uint32_t lap;
uint8_t length;
uint8_t num_responses;
} hci_inquiry;
struct
{
bd_addr_t bd_addr;
uint8_t page_scan_repetition_mode;
uint8_t reserved;
uint16_t clock_offset;
} hci_remote_name_request;
/* For wiimote only.
* TODO - should we repurpose this so
* that it's for more than just Wiimote?
* */
struct
{
bd_addr_t bd_addr;
bd_addr_t pin;
} hci_pin_code_request_reply;
};
};
struct btstack_hid_adapter
{
uint32_t slot;
enum btpad_state state;
bool has_address;
bd_addr_t address;
uint16_t handle;
/* 0: Control, 1: Interrupt */
uint16_t channels[2];
};
#define GRAB(A) {#A, (void**)&A##_ptr}
static struct
{
const char* name;
void** target;
} grabbers[] =
{
GRAB(bt_open),
GRAB(bt_close),
GRAB(bt_flip_addr),
GRAB(bd_addr_to_str),
GRAB(bt_register_packet_handler),
GRAB(bt_send_cmd),
GRAB(bt_send_l2cap),
GRAB(run_loop_init),
GRAB(run_loop_execute),
GRAB(btstack_set_power_mode),
GRAB(hci_delete_stored_link_key),
GRAB(hci_disconnect),
GRAB(hci_read_bd_addr),
GRAB(hci_inquiry),
GRAB(hci_inquiry_cancel),
GRAB(hci_pin_code_request_reply),
GRAB(hci_pin_code_request_negative_reply),
GRAB(hci_remote_name_request),
GRAB(hci_remote_name_request_cancel),
GRAB(hci_write_authentication_enable),
GRAB(hci_write_inquiry_mode),
GRAB(l2cap_create_channel),
GRAB(l2cap_register_service),
GRAB(l2cap_accept_connection),
GRAB(l2cap_decline_connection),
{0, 0}
};
static bool btstack_tested;
static bool btstack_loaded;
static bool inquiry_off;
static bool inquiry_running;
static struct btstack_hid_adapter g_connections[MAX_USERS];
struct btpad_queue_command commands[64];
static uint32_t insert_position;
static uint32_t read_position;
static uint32_t can_run;
static sthread_t *btstack_thread;
#ifdef __APPLE__
static CFRunLoopSourceRef btstack_quit_source;
#endif
static void *btstack_get_handle(void)
{
#ifdef HAVE_DYNAMIC
void *handle = dylib_load("/usr/lib/libBTstack.dylib");
if (handle)
return handle;
#endif
return NULL;
}
static void btpad_increment_position(uint32_t *ptr)
{
*ptr = (*ptr + 1) % 64;
}
static void btpad_connection_send_control(void *data,
uint8_t* data_buf, size_t size)
{
struct btstack_hid_adapter *connection = (struct btstack_hid_adapter*)data;
if (connection)
bt_send_l2cap_ptr(connection->channels[0], data_buf, size);
}
static void btpad_queue_process_cmd(struct btpad_queue_command *cmd)
{
if (!cmd)
return;
if (cmd->command == btstack_set_power_mode_ptr)
bt_send_cmd_ptr(
cmd->command,
cmd->btstack_set_power_mode.on);
else if (cmd->command == hci_read_bd_addr_ptr)
bt_send_cmd_ptr(cmd->command);
else if (cmd->command == hci_disconnect_ptr)
bt_send_cmd_ptr(
cmd->command,
cmd->hci_disconnect.handle,
cmd->hci_disconnect.reason);
else if (cmd->command == hci_inquiry_ptr)
bt_send_cmd_ptr(
cmd->command,
cmd->hci_inquiry.lap,
cmd->hci_inquiry.length,
cmd->hci_inquiry.num_responses);
else if (cmd->command == hci_remote_name_request_ptr)
bt_send_cmd_ptr(
cmd->command,
cmd->hci_remote_name_request.bd_addr,
cmd->hci_remote_name_request.page_scan_repetition_mode,
cmd->hci_remote_name_request.reserved,
cmd->hci_remote_name_request.clock_offset);
else if (cmd->command == hci_pin_code_request_reply_ptr)
bt_send_cmd_ptr(
cmd->command,
cmd->hci_pin_code_request_reply.bd_addr,
6,
cmd->hci_pin_code_request_reply.pin);
}
static void btpad_queue_process(void)
{
for (; can_run && (insert_position != read_position); can_run--)
{
struct btpad_queue_command* cmd = &commands[read_position];
btpad_queue_process_cmd(cmd);
btpad_increment_position(&read_position);
}
}
static void btpad_queue_run(uint32_t count)
{
can_run = count;
btpad_queue_process();
}
static void btpad_queue_hci_read_bd_addr(
struct btpad_queue_command *cmd)
{
if (!cmd)
return;
cmd->command = hci_read_bd_addr_ptr;
btpad_increment_position(&insert_position);
btpad_queue_process();
}
static void btpad_queue_hci_disconnect(
struct btpad_queue_command *cmd,
uint16_t handle, uint8_t reason)
{
if (!cmd)
return;
cmd->command = hci_disconnect_ptr;
cmd->hci_disconnect.handle = handle;
cmd->hci_disconnect.reason = reason;
btpad_increment_position(&insert_position);
btpad_queue_process();
}
static void btpad_queue_hci_inquiry(
struct btpad_queue_command *cmd,
uint32_t lap,
uint8_t length, uint8_t num_responses)
{
if (!cmd)
return;
cmd->command = hci_inquiry_ptr;
cmd->hci_inquiry.lap = lap;
cmd->hci_inquiry.length = length;
cmd->hci_inquiry.num_responses = num_responses;
btpad_increment_position(&insert_position);
btpad_queue_process();
}
static void btpad_queue_hci_remote_name_request(
struct btpad_queue_command *cmd,
bd_addr_t bd_addr,
uint8_t page_scan_repetition_mode,
uint8_t reserved, uint16_t clock_offset)
{
if (!cmd)
return;
cmd->command = hci_remote_name_request_ptr;
memcpy(cmd->hci_remote_name_request.bd_addr, bd_addr, sizeof(bd_addr_t));
cmd->hci_remote_name_request.page_scan_repetition_mode =
page_scan_repetition_mode;
cmd->hci_remote_name_request.reserved = reserved;
cmd->hci_remote_name_request.clock_offset = clock_offset;
btpad_increment_position(&insert_position);
btpad_queue_process();
}
static void btpad_queue_hci_pin_code_request_reply(
struct btpad_queue_command *cmd,
bd_addr_t bd_addr, bd_addr_t pin)
{
if (!cmd)
return;
cmd->command = hci_pin_code_request_reply_ptr;
memcpy(cmd->hci_pin_code_request_reply.bd_addr, bd_addr, sizeof(bd_addr_t));
memcpy(cmd->hci_pin_code_request_reply.pin, pin, sizeof(bd_addr_t));
btpad_increment_position(&insert_position);
btpad_queue_process();
}
static void btpad_close_connection(struct btstack_hid_adapter* connection)
{
if (!connection)
return;
if (connection->handle)
btpad_queue_hci_disconnect(&commands[insert_position],
connection->handle, 0x15);
memset(connection, 0, sizeof(struct btstack_hid_adapter));
}
static void btpad_close_all_connections(void)
{
unsigned i;
for (i = 0; i < MAX_USERS; i ++)
btpad_close_connection(&g_connections[i]);
#ifdef __APPLE__
CFRunLoopStop(CFRunLoopGetCurrent());
#endif
}
static struct btstack_hid_adapter *btpad_find_empty_connection(void)
{
unsigned i;
for (i = 0; i < MAX_USERS; i++)
{
if (g_connections[i].state == BTPAD_EMPTY)
return &g_connections[i];
}
return 0;
}
static struct btstack_hid_adapter *btpad_find_connection_for(
uint16_t handle, bd_addr_t address)
{
unsigned i;
for (i = 0; i < MAX_USERS; i++)
{
if (!g_connections[i].handle && !g_connections[i].has_address)
continue;
if (handle && g_connections[i].handle
&& handle != g_connections[i].handle)
continue;
if (address && g_connections[i].has_address
&& (BD_ADDR_CMP(address, g_connections[i].address)))
continue;
return &g_connections[i];
}
return 0;
}
static void btpad_queue_reset(void)
{
insert_position = 0;
read_position = 0;
can_run = 1;
}
static void btpad_queue_btstack_set_power_mode(
struct btpad_queue_command *cmd, uint8_t on)
{
if (!cmd)
return;
cmd->command = btstack_set_power_mode_ptr;
cmd->btstack_set_power_mode.on = on;
btpad_increment_position(&insert_position);
btpad_queue_process();
}
static void btpad_set_inquiry_state(bool on)
{
inquiry_off = !on;
if (!inquiry_off && !inquiry_running)
btpad_queue_hci_inquiry(&commands[insert_position],
HCI_INQUIRY_LAP, 3, 1);
}
static void btpad_packet_handler(uint8_t packet_type,
uint16_t channel, uint8_t *packet, uint16_t size)
{
unsigned i;
bd_addr_t event_addr;
struct btpad_queue_command* cmd = &commands[insert_position];
switch (packet_type)
{
case L2CAP_DATA_PACKET:
for (i = 0; i < MAX_USERS; i ++)
{
struct btstack_hid_adapter *connection = &g_connections[i];
if (!connection || connection->state != BTPAD_CONNECTED)
continue;
if ( connection->channels[0] == channel
|| connection->channels[1] == channel)
pad_connection_packet(&slots[connection->slot], connection->slot, packet, size);
}
break;
case HCI_EVENT_PACKET:
switch (packet[0])
{
case BTSTACK_EVENT_STATE:
RARCH_LOG("[BTstack]: HCI State %d.\n", packet[2]);
switch (packet[2])
{
case HCI_STATE_WORKING:
btpad_queue_reset();
btpad_queue_hci_read_bd_addr(cmd);
/* TODO: Where did I get 672 for MTU? */
bt_send_cmd_ptr(l2cap_register_service_ptr, PSM_HID_CONTROL, 672);
bt_send_cmd_ptr(l2cap_register_service_ptr, PSM_HID_INTERRUPT, 672);
btpad_queue_hci_inquiry(cmd, HCI_INQUIRY_LAP, 3, 1);
btpad_queue_run(1);
break;
case HCI_STATE_HALTING:
btpad_close_all_connections();
break;
}
break;
case HCI_EVENT_COMMAND_STATUS:
btpad_queue_run(packet[3]);
break;
case HCI_EVENT_COMMAND_COMPLETE:
btpad_queue_run(packet[2]);
if (COMMAND_COMPLETE_EVENT(packet, (*hci_read_bd_addr_ptr)))
{
bt_flip_addr_ptr(event_addr, &packet[6]);
if (!packet[5])
RARCH_LOG("[BTpad]: Local address is %s.\n",
bd_addr_to_str_ptr(event_addr));
else
RARCH_LOG("[BTpad]: Failed to get local address (Status: %02X).\n",
packet[5]);
}
break;
case HCI_EVENT_INQUIRY_RESULT:
if (packet[2])
{
struct btstack_hid_adapter* connection = NULL;
bt_flip_addr_ptr(event_addr, &packet[3]);
connection = btpad_find_empty_connection();
if (!connection)
return;
RARCH_LOG("[BTpad]: Inquiry found device\n");
memset(connection, 0, sizeof(struct btstack_hid_adapter));
memcpy(connection->address, event_addr, sizeof(bd_addr_t));
connection->has_address = true;
connection->state = BTPAD_CONNECTING;
bt_send_cmd_ptr(l2cap_create_channel_ptr, connection->address, PSM_HID_CONTROL);
bt_send_cmd_ptr(l2cap_create_channel_ptr, connection->address, PSM_HID_INTERRUPT);
}
break;
case HCI_EVENT_INQUIRY_COMPLETE:
/* This must be turned off during gameplay
* as it causes a ton of lag. */
inquiry_running = !inquiry_off;
if (inquiry_running)
btpad_queue_hci_inquiry(cmd, HCI_INQUIRY_LAP, 3, 1);
break;
case L2CAP_EVENT_CHANNEL_OPENED:
{
uint16_t handle, psm, channel_id;
struct btstack_hid_adapter *connection = NULL;
bt_flip_addr_ptr(event_addr, &packet[3]);
handle = READ_BT_16(packet, 9);
psm = READ_BT_16(packet, 11);
channel_id = READ_BT_16(packet, 13);
connection = btpad_find_connection_for(handle, event_addr);
if (!packet[2])
{
if (!connection)
{
RARCH_LOG("[BTpad]: Got L2CAP 'Channel Opened' event for unrecognized device.\n");
break;
}
RARCH_LOG("[BTpad]: L2CAP channel opened: (PSM: %02X)\n", psm);
connection->handle = handle;
switch (psm)
{
case PSM_HID_CONTROL:
connection->channels[0] = channel_id;
break;
case PSM_HID_INTERRUPT:
connection->channels[1] = channel_id;
break;
default:
RARCH_LOG("[BTpad]: Got unknown L2CAP PSM, ignoring (PSM: %02X).\n", psm);
break;
}
if (connection->channels[0] && connection->channels[1])
{
RARCH_LOG("[BTpad]: Got both L2CAP channels, requesting name.\n");
btpad_queue_hci_remote_name_request(cmd, connection->address, 0, 0, 0);
}
}
else
RARCH_LOG("[BTpad]: Got failed L2CAP 'Channel Opened' event (PSM: %02X, Status: %02X).\n", psm, packet[2]);
}
break;
case L2CAP_EVENT_INCOMING_CONNECTION:
{
uint16_t handle, psm, channel_id;
struct btstack_hid_adapter* connection = NULL;
bt_flip_addr_ptr(event_addr, &packet[2]);
handle = READ_BT_16(packet, 8);
psm = READ_BT_16(packet, 10);
channel_id = READ_BT_16(packet, 12);
connection = btpad_find_connection_for(handle, event_addr);
if (!connection)
{
connection = btpad_find_empty_connection();
if (!connection)
break;
RARCH_LOG("[BTpad]: Got new incoming connection\n");
memset(connection, 0,
sizeof(struct btstack_hid_adapter));
memcpy(connection->address, event_addr,
sizeof(bd_addr_t));
connection->has_address = true;
connection->handle = handle;
connection->state = BTPAD_CONNECTING;
}
RARCH_LOG("[BTpad]: Incoming L2CAP connection (PSM: %02X).\n",
psm);
bt_send_cmd_ptr(l2cap_accept_connection_ptr, channel_id);
}
break;
case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE:
{
struct btstack_hid_adapter *connection = NULL;
bt_flip_addr_ptr(event_addr, &packet[3]);
connection = btpad_find_connection_for(0, event_addr);
if (!connection)
{
RARCH_LOG("[BTpad]: Got unexpected remote name, ignoring.\n");
break;
}
RARCH_LOG("[BTpad]: Got %.200s.\n", (char*)&packet[9]);
connection->slot = pad_connection_pad_init(&slots[connection->slot],
(char*)packet + 9, 0, 0, connection, &btpad_connection_send_control);
connection->state = BTPAD_CONNECTED;
}
break;
case HCI_EVENT_PIN_CODE_REQUEST:
RARCH_LOG("[BTpad]: Sending Wiimote PIN.\n");
bt_flip_addr_ptr(event_addr, &packet[2]);
btpad_queue_hci_pin_code_request_reply(cmd, event_addr, &packet[2]);
break;
case HCI_EVENT_DISCONNECTION_COMPLETE:
{
const uint32_t handle = READ_BT_16(packet, 3);
if (!packet[2])
{
struct btstack_hid_adapter* connection = btpad_find_connection_for(handle, 0);
if (connection)
{
connection->handle = 0;
pad_connection_pad_deinit(&slots[connection->slot], connection->slot);
btpad_close_connection(connection);
}
}
else
RARCH_LOG("[BTpad]: Got failed 'Disconnection Complete' event (Status: %02X).\n", packet[2]);
}
break;
case L2CAP_EVENT_SERVICE_REGISTERED:
if (packet[2])
RARCH_LOG("[BTpad]: Got failed 'Service Registered' event (PSM: %02X, Status: %02X).\n",
READ_BT_16(packet, 3), packet[2]);
break;
}
break;
}
}
static bool btstack_try_load(void)
{
#ifdef HAVE_DYNAMIC
unsigned i;
#endif
void *handle = NULL;
if (btstack_tested)
return btstack_loaded;
btstack_tested = true;
btstack_loaded = false;
handle = btstack_get_handle();
if (!handle)
return false;
#ifdef HAVE_DYNAMIC
for (i = 0; grabbers[i].name; i ++)
{
*grabbers[i].target = dylib_proc(handle, grabbers[i].name);
if (!*grabbers[i].target)
{
dylib_close(handle);
return false;
}
}
#endif
#if defined(HAVE_COCOA) || defined(HAVE_COCOATOUCH)
run_loop_init_ptr(RUN_LOOP_COCOA);
#else
run_loop_init_ptr(RUN_LOOP_POSIX);
#endif
bt_register_packet_handler_ptr(btpad_packet_handler);
btstack_loaded = true;
return true;
}
static void btstack_thread_stop(void *data)
{
(void)data;
bt_send_cmd_ptr(btstack_set_power_mode_ptr, HCI_POWER_OFF);
}
static void btstack_thread_func(void* data)
{
RARCH_LOG("[BTstack]: Thread started");
if (bt_open_ptr())
return;
#ifdef __APPLE__
CFRunLoopSourceContext ctx = { 0, 0, 0, 0, 0, 0, 0, 0, 0, btstack_thread_stop };
btstack_quit_source = CFRunLoopSourceCreate(0, 0, &ctx);
CFRunLoopAddSource(CFRunLoopGetCurrent(), btstack_quit_source, kCFRunLoopCommonModes);
#endif
RARCH_LOG("[BTstack]: Turning on...\n");
bt_send_cmd_ptr(btstack_set_power_mode_ptr, HCI_POWER_ON);
RARCH_LOG("BTstack: Thread running...\n");
#ifdef __APPLE__
CFRunLoopRun();
#endif
RARCH_LOG("[BTstack]: Thread done.\n");
#ifdef __APPLE__
CFRunLoopSourceInvalidate(btstack_quit_source);
CFRelease(btstack_quit_source);
#endif
}
static void btstack_set_poweron(bool on)
{
if (!btstack_try_load())
return;
if (on && !btstack_thread)
btstack_thread = sthread_create(btstack_thread_func, NULL);
else if (!on && btstack_thread && btstack_quit_source)
{
#ifdef __APPLE__
CFRunLoopSourceSignal(btstack_quit_source);
#endif
sthread_join(btstack_thread);
btstack_thread = NULL;
}
}
static bool btstack_hid_joypad_query(void *data, unsigned pad)
{
return pad < MAX_USERS;
}
static const char *btstack_hid_joypad_name(void *data, unsigned pad)
{
/* TODO/FIXME - implement properly */
if (pad >= MAX_USERS)
return NULL;
return NULL;
}
static uint64_t btstack_hid_joypad_get_buttons(void *data, unsigned port)
{
btstack_hid_t *hid = (btstack_hid_t*)data;
if (hid)
return pad_connection_get_buttons(&hid->slots[port], port);
return 0;
}
static bool btstack_hid_joypad_button(void *data, unsigned port, uint16_t joykey)
{
uint64_t buttons = btstack_hid_joypad_get_buttons(data, port);
/* Check hat. */
if (GET_HAT_DIR(joykey))
return false;
/* Check the button. */
if ((port < MAX_USERS) && (joykey < 32))
return ((buttons & (1 << joykey)) != 0);
return false;
}
static bool btstack_hid_joypad_rumble(void *data, unsigned pad,
enum retro_rumble_effect effect, uint16_t strength)
{
btstack_hid_t *hid = (btstack_hid_t*)data;
if (!hid)
return false;
return pad_connection_rumble(&hid->slots[pad], pad, effect, strength);
}
static int16_t btstack_hid_joypad_axis(void *data, unsigned port, uint32_t joyaxis)
{
btstack_hid_t *hid = (btstack_hid_t*)data;
int16_t val = 0;
if (joyaxis == AXIS_NONE)
return 0;
if (AXIS_NEG_GET(joyaxis) < 4)
{
val += pad_connection_get_axis(&hid->slots[port], port, AXIS_NEG_GET(joyaxis));
if (val >= 0)
val = 0;
}
else if(AXIS_POS_GET(joyaxis) < 4)
{
val += pad_connection_get_axis(&hid->slots[port], port, AXIS_POS_GET(joyaxis));
if (val <= 0)
val = 0;
}
return val;
}
static void btstack_hid_free(void *data)
{
btstack_hid_t *hid = (btstack_hid_t*)data;
if (!hid)
return;
pad_connection_destroy(hid->slots);
btpad_set_inquiry_state(true);
btstack_set_poweron(false);
if (hid)
free(hid);
}
static void *btstack_hid_init(void)
{
btstack_hid_t *hid = (btstack_hid_t*)calloc(1, sizeof(btstack_hid_t));
if (!hid)
goto error;
hid->slots = pad_connection_init(MAX_USERS);
if (!hid->slots)
goto error;
btstack_set_poweron(false);
btpad_set_inquiry_state(false);
return hid;
error:
btstack_hid_free(hid);
return NULL;
}
static void btstack_hid_poll(void *data)
{
(void)data;
}
hid_driver_t btstack_hid = {
btstack_hid_init,
btstack_hid_joypad_query,
btstack_hid_free,
btstack_hid_joypad_button,
btstack_hid_joypad_get_buttons,
btstack_hid_joypad_axis,
btstack_hid_poll,
btstack_hid_joypad_rumble,
btstack_hid_joypad_name,
"btstack",
};
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