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wireless/bluetooth: Add a generic access service.

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Make NuttX peripheral visible to BLE apps.
This commit is contained in:
Lwazi Dube 2023-06-02 22:47:14 -04:00 committed by Alan Carvalho de Assis
parent a41f752ecc
commit a720984eb7
5 changed files with 282 additions and 6 deletions
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16
include/nuttx/wireless/bluetooth/bt_core.h
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@ -217,4 +217,20 @@ static inline int bt_addr_le_to_str(FAR const bt_addr_le_t *addr, char *str,
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: bt_add_services
*
* Description:
* Register services and start advertising.
*
* Input Parameters:
* None
*
* Returned Value:
* Zero in case of success or negative value in case of error.
*
****************************************************************************/
int bt_add_services(void);
#endif /* __INCLUDE_NUTTX_WIRELESS_BLUETOOTH_BT_CORE_H */

20
wireless/bluetooth/Kconfig
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@ -60,6 +60,26 @@ menuconfig WIRELESS_BLUETOOTH_HOST
BLE link-layer or to an external device over HCI UART).
if WIRELESS_BLUETOOTH_HOST
config DEVICE_APPEARANCE
int "Appearance sub-category value"
default 0
range 0 5188
---help---
This value comes from the "Appearance sub-category"
section (2.6.3) in the Bluetooth Assigned Numbers document.
config DEVICE_NAME
string "Device name"
default "Apache NuttX"
---help---
The device name.
config DEVICE_LOCAL_NAME
string "Device local name"
default "NuttX"
---help---
The device name used for advertising.
endif # WIRELESS_BLUETOOTH_HOST
config BLUETOOTH_MAX_CONN

2
wireless/bluetooth/Make.defs
View File

@ -30,7 +30,7 @@ ifeq ($(CONFIG_WIRELESS_BLUETOOTH_HOST),y)
CSRCS += bt_atomic.c bt_att.c bt_conn.c bt_gatt.c
CSRCS += bt_ioctl.c bt_keys.c bt_l2cap.c bt_smp.c
CSRCS += bt_uuid.c
CSRCS += bt_uuid.c bt_services.c
endif

9
wireless/bluetooth/bt_netdev.c
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@ -296,21 +296,18 @@ static void btnet_l2cap_connected(FAR struct bt_conn_s *conn,
FAR void *context, uint16_t cid)
{
wlinfo("Connected\n");
#warning Missing logic
}
static void btnet_l2cap_disconnected(FAR struct bt_conn_s *conn,
FAR void *context, uint16_t cid)
{
wlinfo("Disconnected\n");
#warning Missing logic
}
static void btnet_l2cap_encrypt_change(FAR struct bt_conn_s *conn,
FAR void *context, uint16_t cid)
{
wlinfo("Encryption change\n");
#warning Missing logic
}
/****************************************************************************
@ -463,14 +460,12 @@ static void btnet_hci_connected(FAR struct bt_conn_s *conn,
FAR void *context)
{
wlinfo("Connected\n");
#warning Missing logic
}
static void btnet_hci_disconnected(FAR struct bt_conn_s *conn,
FAR void *context)
{
wlinfo("Disconnected\n");
#warning Missing logic
}
#else
@ -1301,6 +1296,10 @@ int bt_netdev_register(FAR struct bt_driver_s *btdev)
priv->bd_dev.r_dev.d_buf = g_iobuffer.rb_buf;
#endif
#ifdef CONFIG_WIRELESS_BLUETOOTH_HOST
bt_add_services();
#endif
/* Register the network device with the OS so that socket IOCTLs can be
* performed
*/

241
wireless/bluetooth/bt_services.c Normal file
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@ -0,0 +1,241 @@
/****************************************************************************
* wireless/bluetooth/bt_services.c
*
* Copyright (c) 2016, Intel Corporation
* All rights reserved.
*
* 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 holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 THE COPYRIGHT HOLDER 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <string.h>
#include <errno.h>
#include <debug.h>
#include <arpa/inet.h>
#include <sys/param.h>
#include <nuttx/wireless/bluetooth/bt_hci.h>
#include <nuttx/wireless/bluetooth/bt_core.h>
#include <nuttx/wireless/bluetooth/bt_uuid.h>
#include <nuttx/wireless/bluetooth/bt_gatt.h>
#include "bt_hcicore.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define GASVC 0x0001
#define NAME_CHR (GASVC + 0x0002)
#define NAME_DSC (GASVC + 0x0003)
#define APPEARANCE_CHR (GASVC + 0x0004)
#define APPEARANCE_DSC (GASVC + 0x0005)
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
static int read_appearance(FAR struct bt_conn_s *conn,
FAR const struct bt_gatt_attr_s *attr,
FAR void *buf,
uint8_t len,
uint16_t offset);
static int read_name(FAR struct bt_conn_s *conn,
FAR const struct bt_gatt_attr_s *attr,
FAR void *buf,
uint8_t len,
uint16_t offset);
static struct bt_uuid_s g_gap_uuid =
{
.type = BT_UUID_16,
.u =
{
.u16 = BT_UUID_GAP
},
};
static struct bt_uuid_s g_device_name_uuid =
{
.type = BT_UUID_16,
.u =
{
.u16 = BT_UUID_GAP_DEVICE_NAME,
}
};
static struct bt_gatt_chrc_s g_name_chrc =
{
.properties = BT_GATT_CHRC_READ,
.value_handle = NAME_DSC,
.uuid = &g_device_name_uuid,
};
static struct bt_uuid_s g_appeareance_uuid =
{
.type = BT_UUID_16,
.u =
{
.u16 = BT_UUID_GAP_APPEARANCE,
}
};
static struct bt_gatt_chrc_s g_appearance_chrc =
{
.properties = BT_GATT_CHRC_READ,
.value_handle = APPEARANCE_DSC,
.uuid = &g_appeareance_uuid,
};
static const struct bt_gatt_attr_s g_attrs[] =
{
BT_GATT_PRIMARY_SERVICE(GASVC, &g_gap_uuid),
BT_GATT_CHARACTERISTIC(NAME_CHR, &g_name_chrc),
BT_GATT_DESCRIPTOR(NAME_DSC, &g_device_name_uuid, BT_GATT_PERM_READ,
read_name, NULL, (FAR void *)CONFIG_DEVICE_NAME),
BT_GATT_CHARACTERISTIC(APPEARANCE_CHR, &g_appearance_chrc),
BT_GATT_DESCRIPTOR(APPEARANCE_DSC, &g_appeareance_uuid,
BT_GATT_PERM_READ, read_appearance, NULL, NULL),
};
static const struct bt_eir_s g_ad[] =
{
{
.len = 2,
.type = BT_EIR_FLAGS,
.data =
{
BT_LE_AD_GENERAL | BT_LE_AD_NO_BREDR
},
},
{
.len = 0,
.type = 0,
.data = "",
}
};
static const struct bt_eir_s g_sd[] =
{
{
.len = 16,
.type = BT_EIR_NAME_COMPLETE,
.data = CONFIG_DEVICE_LOCAL_NAME,
},
{
.len = 0,
.type = 0,
.data = "",
}
};
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: read_name
*
* Description:
* Read callback for name descriptor.
*
* Returned Value:
* Zero in case of success or negative value in case of error.
*
****************************************************************************/
static int read_name(FAR struct bt_conn_s *conn,
FAR const struct bt_gatt_attr_s *attr,
FAR void *buf,
uint8_t len,
uint16_t offset)
{
FAR const char *name = attr->user_data;
return bt_gatt_attr_read(conn, attr, buf, len, offset, name,
strlen(name));
}
/****************************************************************************
* Name: read_appearance
*
* Description:
* Read callback for appearance descriptor.
*
* Returned Value:
* Zero in case of success or negative value in case of error.
*
****************************************************************************/
static int read_appearance(FAR struct bt_conn_s *conn,
FAR const struct bt_gatt_attr_s *attr,
FAR void *buf,
uint8_t len,
uint16_t offset)
{
uint16_t appearance = htole16(CONFIG_DEVICE_APPEARANCE);
return bt_gatt_attr_read(conn, attr, buf, len, offset, &appearance,
sizeof(appearance));
}
/****************************************************************************
* Name: bt_add_services
*
* Description:
* Register services and start advertising.
*
* Input Parameters:
* None
*
* Returned Value:
* Zero in case of success or negative value in case of error.
*
****************************************************************************/
int bt_add_services(void)
{
int err;
bt_gatt_register(g_attrs, nitems(g_attrs));
err = bt_start_advertising(BT_LE_ADV_IND, g_ad, g_sd);
if (err)
{
wlerr("Advertising failed to start (err %d)\n", err);
}
return err;
}