512 lines
24 KiB
C
512 lines
24 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2018 Ayke van Laethem
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* Copyright (c) 2019-2020 Jim Mussared
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef MICROPY_INCLUDED_EXTMOD_MODBLUETOOTH_H
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#define MICROPY_INCLUDED_EXTMOD_MODBLUETOOTH_H
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#include <stdbool.h>
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#include "py/obj.h"
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#include "py/objlist.h"
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#include "py/ringbuf.h"
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// Port specific configuration.
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#ifndef MICROPY_PY_BLUETOOTH_RINGBUF_SIZE
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#define MICROPY_PY_BLUETOOTH_RINGBUF_SIZE (128)
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#endif
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#ifndef MICROPY_PY_BLUETOOTH_ENABLE_CENTRAL_MODE
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#define MICROPY_PY_BLUETOOTH_ENABLE_CENTRAL_MODE (0)
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#endif
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#ifndef MICROPY_PY_BLUETOOTH_ENABLE_GATT_CLIENT
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// Enable the client by default if we're enabling central mode. It's possible
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// to enable client without central though.
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#define MICROPY_PY_BLUETOOTH_ENABLE_GATT_CLIENT (MICROPY_PY_BLUETOOTH_ENABLE_CENTRAL_MODE)
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#endif
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#ifndef MICROPY_PY_BLUETOOTH_USE_SYNC_EVENTS
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// This can be enabled if the BLE stack runs entirely in scheduler context
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// and therefore is able to call directly into the VM to run Python callbacks.
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#define MICROPY_PY_BLUETOOTH_USE_SYNC_EVENTS (0)
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#endif
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// A port can optionally enable support for L2CAP "Connection Oriented Channels".
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#ifndef MICROPY_PY_BLUETOOTH_ENABLE_L2CAP_CHANNELS
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#define MICROPY_PY_BLUETOOTH_ENABLE_L2CAP_CHANNELS (0)
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#endif
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// A port can optionally enable support for pairing and bonding.
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// Requires MICROPY_PY_BLUETOOTH_USE_SYNC_EVENTS.
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#ifndef MICROPY_PY_BLUETOOTH_ENABLE_PAIRING_BONDING
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#define MICROPY_PY_BLUETOOTH_ENABLE_PAIRING_BONDING (0)
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#endif
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// Optionally enable support for the `hci_cmd` function allowing
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// Python to directly low-level HCI commands.
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#ifndef MICROPY_PY_BLUETOOTH_ENABLE_HCI_CMD
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#define MICROPY_PY_BLUETOOTH_ENABLE_HCI_CMD (0)
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#endif
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// This is used to protect the ringbuffer.
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// A port may no-op this if MICROPY_PY_BLUETOOTH_USE_SYNC_EVENTS is enabled.
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#ifndef MICROPY_PY_BLUETOOTH_ENTER
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#define MICROPY_PY_BLUETOOTH_ENTER mp_uint_t atomic_state = MICROPY_BEGIN_ATOMIC_SECTION();
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#define MICROPY_PY_BLUETOOTH_EXIT MICROPY_END_ATOMIC_SECTION(atomic_state);
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#endif
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// Common constants.
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#ifndef MP_BLUETOOTH_DEFAULT_ATTR_LEN
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#define MP_BLUETOOTH_DEFAULT_ATTR_LEN (20)
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#endif
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#define MP_BLUETOOTH_CCCB_LEN (2)
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// Advertisement packet lengths
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#define MP_BLUETOOTH_GAP_ADV_MAX_LEN (32)
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// Basic characteristic/descriptor flags.
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// These match the spec values for these flags so can be passed directly to the stack.
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#define MP_BLUETOOTH_CHARACTERISTIC_FLAG_BROADCAST (0x0001)
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#define MP_BLUETOOTH_CHARACTERISTIC_FLAG_READ (0x0002)
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#define MP_BLUETOOTH_CHARACTERISTIC_FLAG_WRITE_NO_RESPONSE (0x0004)
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#define MP_BLUETOOTH_CHARACTERISTIC_FLAG_WRITE (0x0008)
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#define MP_BLUETOOTH_CHARACTERISTIC_FLAG_NOTIFY (0x0010)
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#define MP_BLUETOOTH_CHARACTERISTIC_FLAG_INDICATE (0x0020)
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#define MP_BLUETOOTH_CHARACTERISTIC_FLAG_AUTHENTICATED_SIGNED_WRITE (0x0040)
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// TODO: NimBLE and BlueKitchen disagree on this one.
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// #define MP_BLUETOOTH_CHARACTERISTIC_FLAG_RELIABLE_WRITE (0x0080)
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// Extended flags for security and privacy.
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// These match NimBLE but might require mapping in the bindings for other stacks.
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#define MP_BLUETOOTH_CHARACTERISTIC_FLAG_AUX_WRITE (0x0100)
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#define MP_BLUETOOTH_CHARACTERISTIC_FLAG_READ_ENCRYPTED (0x0200)
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#define MP_BLUETOOTH_CHARACTERISTIC_FLAG_READ_AUTHENTICATED (0x0400)
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#define MP_BLUETOOTH_CHARACTERISTIC_FLAG_READ_AUTHORIZED (0x0800)
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#define MP_BLUETOOTH_CHARACTERISTIC_FLAG_WRITE_ENCRYPTED (0x1000)
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#define MP_BLUETOOTH_CHARACTERISTIC_FLAG_WRITE_AUTHENTICATED (0x2000)
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#define MP_BLUETOOTH_CHARACTERISTIC_FLAG_WRITE_AUTHORIZED (0x4000)
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// Return values from _IRQ_GATTS_READ_REQUEST.
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#define MP_BLUETOOTH_GATTS_NO_ERROR (0x00)
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#define MP_BLUETOOTH_GATTS_ERROR_READ_NOT_PERMITTED (0x02)
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#define MP_BLUETOOTH_GATTS_ERROR_WRITE_NOT_PERMITTED (0x03)
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#define MP_BLUETOOTH_GATTS_ERROR_INSUFFICIENT_AUTHENTICATION (0x05)
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#define MP_BLUETOOTH_GATTS_ERROR_INSUFFICIENT_AUTHORIZATION (0x08)
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#define MP_BLUETOOTH_GATTS_ERROR_INSUFFICIENT_ENCRYPTION (0x0f)
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// For mp_bluetooth_gattc_write, the mode parameter
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#define MP_BLUETOOTH_WRITE_MODE_NO_RESPONSE (0)
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#define MP_BLUETOOTH_WRITE_MODE_WITH_RESPONSE (1)
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// Type value also doubles as length.
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#define MP_BLUETOOTH_UUID_TYPE_16 (2)
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#define MP_BLUETOOTH_UUID_TYPE_32 (4)
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#define MP_BLUETOOTH_UUID_TYPE_128 (16)
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// Event codes for the IRQ handler.
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#define MP_BLUETOOTH_IRQ_CENTRAL_CONNECT (1)
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#define MP_BLUETOOTH_IRQ_CENTRAL_DISCONNECT (2)
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#define MP_BLUETOOTH_IRQ_GATTS_WRITE (3)
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#define MP_BLUETOOTH_IRQ_GATTS_READ_REQUEST (4)
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#define MP_BLUETOOTH_IRQ_SCAN_RESULT (5)
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#define MP_BLUETOOTH_IRQ_SCAN_DONE (6)
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#define MP_BLUETOOTH_IRQ_PERIPHERAL_CONNECT (7)
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#define MP_BLUETOOTH_IRQ_PERIPHERAL_DISCONNECT (8)
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#define MP_BLUETOOTH_IRQ_GATTC_SERVICE_RESULT (9)
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#define MP_BLUETOOTH_IRQ_GATTC_SERVICE_DONE (10)
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#define MP_BLUETOOTH_IRQ_GATTC_CHARACTERISTIC_RESULT (11)
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#define MP_BLUETOOTH_IRQ_GATTC_CHARACTERISTIC_DONE (12)
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#define MP_BLUETOOTH_IRQ_GATTC_DESCRIPTOR_RESULT (13)
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#define MP_BLUETOOTH_IRQ_GATTC_DESCRIPTOR_DONE (14)
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#define MP_BLUETOOTH_IRQ_GATTC_READ_RESULT (15)
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#define MP_BLUETOOTH_IRQ_GATTC_READ_DONE (16)
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#define MP_BLUETOOTH_IRQ_GATTC_WRITE_DONE (17)
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#define MP_BLUETOOTH_IRQ_GATTC_NOTIFY (18)
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#define MP_BLUETOOTH_IRQ_GATTC_INDICATE (19)
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#define MP_BLUETOOTH_IRQ_GATTS_INDICATE_DONE (20)
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#define MP_BLUETOOTH_IRQ_MTU_EXCHANGED (21)
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#define MP_BLUETOOTH_IRQ_L2CAP_ACCEPT (22)
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#define MP_BLUETOOTH_IRQ_L2CAP_CONNECT (23)
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#define MP_BLUETOOTH_IRQ_L2CAP_DISCONNECT (24)
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#define MP_BLUETOOTH_IRQ_L2CAP_RECV (25)
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#define MP_BLUETOOTH_IRQ_L2CAP_SEND_READY (26)
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#define MP_BLUETOOTH_IRQ_CONNECTION_UPDATE (27)
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#define MP_BLUETOOTH_IRQ_ENCRYPTION_UPDATE (28)
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#define MP_BLUETOOTH_IRQ_GET_SECRET (29)
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#define MP_BLUETOOTH_IRQ_SET_SECRET (30)
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#define MP_BLUETOOTH_IRQ_PASSKEY_ACTION (31)
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#define MP_BLUETOOTH_ADDRESS_MODE_PUBLIC (0)
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#define MP_BLUETOOTH_ADDRESS_MODE_RANDOM (1)
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#define MP_BLUETOOTH_ADDRESS_MODE_RPA (2)
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#define MP_BLUETOOTH_ADDRESS_MODE_NRPA (3)
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// These match the spec values, can be used directly by the stack.
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#define MP_BLUETOOTH_IO_CAPABILITY_DISPLAY_ONLY (0)
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#define MP_BLUETOOTH_IO_CAPABILITY_DISPLAY_YESNO (1)
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#define MP_BLUETOOTH_IO_CAPABILITY_KEYBOARD_ONLY (2)
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#define MP_BLUETOOTH_IO_CAPABILITY_NO_INPUT_OUTPUT (3)
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#define MP_BLUETOOTH_IO_CAPABILITY_KEYBOARD_DISPLAY (4)
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// These match NimBLE BLE_SM_IOACT_.
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#define MP_BLUETOOTH_PASSKEY_ACTION_NONE (0)
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#define MP_BLUETOOTH_PASSKEY_ACTION_INPUT (2)
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#define MP_BLUETOOTH_PASSKEY_ACTION_DISPLAY (3)
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#define MP_BLUETOOTH_PASSKEY_ACTION_NUMERIC_COMPARISON (4)
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// These match NimBLE BLE_SM_IOACT_.
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#define MP_BLUETOOTH_PASSKEY_ACTION_NONE (0)
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#define MP_BLUETOOTH_PASSKEY_ACTION_INPUT (2)
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#define MP_BLUETOOTH_PASSKEY_ACTION_DISPLAY (3)
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#define MP_BLUETOOTH_PASSKEY_ACTION_NUMERIC_COMPARISON (4)
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/*
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These aren't included in the module for space reasons, but can be used
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in your Python code if necessary.
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from micropython import const
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_IRQ_CENTRAL_CONNECT = const(1)
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_IRQ_CENTRAL_DISCONNECT = const(2)
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_IRQ_GATTS_WRITE = const(3)
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_IRQ_GATTS_READ_REQUEST = const(4)
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_IRQ_SCAN_RESULT = const(5)
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_IRQ_SCAN_DONE = const(6)
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_IRQ_PERIPHERAL_CONNECT = const(7)
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_IRQ_PERIPHERAL_DISCONNECT = const(8)
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_IRQ_GATTC_SERVICE_RESULT = const(9)
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_IRQ_GATTC_SERVICE_DONE = const(10)
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_IRQ_GATTC_CHARACTERISTIC_RESULT = const(11)
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_IRQ_GATTC_CHARACTERISTIC_DONE = const(12)
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_IRQ_GATTC_DESCRIPTOR_RESULT = const(13)
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_IRQ_GATTC_DESCRIPTOR_DONE = const(14)
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_IRQ_GATTC_READ_RESULT = const(15)
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_IRQ_GATTC_READ_DONE = const(16)
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_IRQ_GATTC_WRITE_DONE = const(17)
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_IRQ_GATTC_NOTIFY = const(18)
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_IRQ_GATTC_INDICATE = const(19)
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_IRQ_GATTS_INDICATE_DONE = const(20)
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_IRQ_MTU_EXCHANGED = const(21)
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_IRQ_L2CAP_ACCEPT = const(22)
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_IRQ_L2CAP_CONNECT = const(23)
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_IRQ_L2CAP_DISCONNECT = const(24)
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_IRQ_L2CAP_RECV = const(25)
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_IRQ_L2CAP_SEND_READY = const(26)
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_IRQ_CONNECTION_UPDATE = const(27)
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_IRQ_ENCRYPTION_UPDATE = const(28)
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_IRQ_GET_SECRET = const(29)
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_IRQ_SET_SECRET = const(30)
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_IRQ_PASSKEY_ACTION = const(31)
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_FLAG_BROADCAST = const(0x0001)
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_FLAG_READ = const(0x0002)
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_FLAG_WRITE_NO_RESPONSE = const(0x0004)
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_FLAG_WRITE = const(0x0008)
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_FLAG_NOTIFY = const(0x0010)
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_FLAG_INDICATE = const(0x0020)
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_FLAG_AUTHENTICATED_SIGNED_WRITE = const(0x0040)
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_FLAG_AUX_WRITE = const(0x0100)
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_FLAG_READ_ENCRYPTED = const(0x0200)
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_FLAG_READ_AUTHENTICATED = const(0x0400)
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_FLAG_READ_AUTHORIZED = const(0x0800)
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_FLAG_WRITE_ENCRYPTED = const(0x1000)
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_FLAG_WRITE_AUTHENTICATED = const(0x2000)
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_FLAG_WRITE_AUTHORIZED = const(0x4000)
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_GATTS_NO_ERROR = const(0x00)
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_GATTS_ERROR_READ_NOT_PERMITTED = const(0x02)
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_GATTS_ERROR_WRITE_NOT_PERMITTED = const(0x03)
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_GATTS_ERROR_INSUFFICIENT_AUTHENTICATION = const(0x05)
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_GATTS_ERROR_INSUFFICIENT_AUTHORIZATION = const(0x08)
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_GATTS_ERROR_INSUFFICIENT_ENCRYPTION = const(0x0f)
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_IO_CAPABILITY_DISPLAY_ONLY = const(0)
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_IO_CAPABILITY_DISPLAY_YESNO = const(1)
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_IO_CAPABILITY_KEYBOARD_ONLY = const(2)
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_IO_CAPABILITY_NO_INPUT_OUTPUT = const(3)
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_IO_CAPABILITY_KEYBOARD_DISPLAY = const(4)
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_PASSKEY_ACTION_NONE = const(0)
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_PASSKEY_ACTION_INPUT = const(2)
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_PASSKEY_ACTION_DISPLAY = const(3)
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_PASSKEY_ACTION_NUMERIC_COMPARISON = const(4)
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*/
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// bluetooth.UUID type.
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// Ports are expected to map this to their own internal UUID types.
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// Internally the UUID data is little-endian, but the user should only
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// ever see this if they use the buffer protocol, e.g. in order to
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// construct an advertising payload (which needs to be in LE).
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// Both the constructor and the print function work in BE.
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typedef struct {
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mp_obj_base_t base;
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uint8_t type;
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uint8_t data[16];
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} mp_obj_bluetooth_uuid_t;
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extern const mp_obj_type_t mp_type_bluetooth_uuid;
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//////////////////////////////////////////////////////////////
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// API implemented by ports (i.e. called from modbluetooth.c):
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// TODO: At the moment this only allows for a single `Bluetooth` instance to be created.
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// Ideally in the future we'd be able to have multiple instances or to select a specific BT driver or HCI UART.
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// So these global methods should be replaced with a struct of function pointers (like the machine.I2C implementations).
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// Any method returning an int returns errno on failure, otherwise zero.
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// Note: All methods dealing with addresses (as 6-byte uint8 pointers) are in big-endian format.
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// (i.e. the same way they would be printed on a device sticker or in a UI), so the user sees
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// addresses in a way that looks like what they'd expect.
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// This means that the lower level implementation will likely need to reorder them (e.g. Nimble
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// works in little-endian, as does BLE itself).
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// Enables the Bluetooth stack.
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int mp_bluetooth_init(void);
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// Disables the Bluetooth stack. Is a no-op when not enabled.
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void mp_bluetooth_deinit(void);
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// Returns true when the Bluetooth stack is active.
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bool mp_bluetooth_is_active(void);
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// Gets the current address of this device in big-endian format.
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void mp_bluetooth_get_current_address(uint8_t *addr_type, uint8_t *addr);
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// Sets the addressing mode to use.
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void mp_bluetooth_set_address_mode(uint8_t addr_mode);
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#if MICROPY_PY_BLUETOOTH_ENABLE_PAIRING_BONDING
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// Set bonding flag in pairing requests (i.e. persist security keys).
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void mp_bluetooth_set_bonding(bool enabled);
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// Require MITM protection.
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void mp_bluetooth_set_mitm_protection(bool enabled);
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// Require LE Secure pairing (rather than Legacy Pairing)
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void mp_bluetooth_set_le_secure(bool enabled);
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// I/O capabilities for authentication (see MP_BLUETOOTH_IO_CAPABILITY_*).
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void mp_bluetooth_set_io_capability(uint8_t capability);
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#endif // MICROPY_PY_BLUETOOTH_ENABLE_PAIRING_BONDING
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// Get or set the GAP device name that will be used by service 0x1800, characteristic 0x2a00.
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size_t mp_bluetooth_gap_get_device_name(const uint8_t **buf);
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int mp_bluetooth_gap_set_device_name(const uint8_t *buf, size_t len);
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// Start advertisement. Will re-start advertisement when already enabled.
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// Returns errno on failure.
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int mp_bluetooth_gap_advertise_start(bool connectable, int32_t interval_us, const uint8_t *adv_data, size_t adv_data_len, const uint8_t *sr_data, size_t sr_data_len);
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// Stop advertisement. No-op when already stopped.
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void mp_bluetooth_gap_advertise_stop(void);
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// Start adding services. Must be called before mp_bluetooth_register_service.
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int mp_bluetooth_gatts_register_service_begin(bool append);
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// Add a service with the given list of characteristics to the queue to be registered.
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// The value_handles won't be valid until after mp_bluetooth_register_service_end is called.
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int mp_bluetooth_gatts_register_service(mp_obj_bluetooth_uuid_t *service_uuid, mp_obj_bluetooth_uuid_t **characteristic_uuids, uint16_t *characteristic_flags, mp_obj_bluetooth_uuid_t **descriptor_uuids, uint16_t *descriptor_flags, uint8_t *num_descriptors, uint16_t *handles, size_t num_characteristics);
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// Register any queued services.
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int mp_bluetooth_gatts_register_service_end(void);
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// Read the value from the local gatts db (likely this has been written by a central).
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int mp_bluetooth_gatts_read(uint16_t value_handle, uint8_t **value, size_t *value_len);
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// Write a value to the local gatts db (ready to be queried by a central). Optionally send notifications/indications.
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int mp_bluetooth_gatts_write(uint16_t value_handle, const uint8_t *value, size_t value_len, bool send_update);
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// Notify the central that it should do a read.
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int mp_bluetooth_gatts_notify(uint16_t conn_handle, uint16_t value_handle);
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// Notify the central, including a data payload. (Note: does not set the gatts db value).
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int mp_bluetooth_gatts_notify_send(uint16_t conn_handle, uint16_t value_handle, const uint8_t *value, size_t value_len);
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// Indicate the central.
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int mp_bluetooth_gatts_indicate(uint16_t conn_handle, uint16_t value_handle);
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// Resize and enable/disable append-mode on a value.
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// Append-mode means that remote writes will append and local reads will clear after reading.
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int mp_bluetooth_gatts_set_buffer(uint16_t value_handle, size_t len, bool append);
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// Disconnect from a central or peripheral.
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int mp_bluetooth_gap_disconnect(uint16_t conn_handle);
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// Set/get the MTU that we will respond to a MTU exchange with.
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int mp_bluetooth_get_preferred_mtu(void);
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int mp_bluetooth_set_preferred_mtu(uint16_t mtu);
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#if MICROPY_PY_BLUETOOTH_ENABLE_PAIRING_BONDING
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// Initiate pairing on the specified connection.
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int mp_bluetooth_gap_pair(uint16_t conn_handle);
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// Respond to a pairing request.
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int mp_bluetooth_gap_passkey(uint16_t conn_handle, uint8_t action, mp_int_t passkey);
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#endif // MICROPY_PY_BLUETOOTH_ENABLE_PAIRING_BONDING
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#if MICROPY_PY_BLUETOOTH_ENABLE_CENTRAL_MODE
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// Start a discovery (scan). Set duration to zero to run continuously.
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int mp_bluetooth_gap_scan_start(int32_t duration_ms, int32_t interval_us, int32_t window_us, bool active_scan);
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// Stop discovery (if currently active).
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int mp_bluetooth_gap_scan_stop(void);
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// Connect to a found peripheral.
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int mp_bluetooth_gap_peripheral_connect(uint8_t addr_type, const uint8_t *addr, int32_t duration_ms, int32_t min_conn_interval_us, int32_t max_conn_interval_us);
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#endif
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#if MICROPY_PY_BLUETOOTH_ENABLE_GATT_CLIENT
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// Find all primary services on the connected peripheral.
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int mp_bluetooth_gattc_discover_primary_services(uint16_t conn_handle, const mp_obj_bluetooth_uuid_t *uuid);
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// Find all characteristics on the specified service on a connected peripheral.
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int mp_bluetooth_gattc_discover_characteristics(uint16_t conn_handle, uint16_t start_handle, uint16_t end_handle, const mp_obj_bluetooth_uuid_t *uuid);
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// Find all descriptors on the specified characteristic on a connected peripheral.
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int mp_bluetooth_gattc_discover_descriptors(uint16_t conn_handle, uint16_t start_handle, uint16_t end_handle);
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// Initiate read of a value from the remote peripheral.
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int mp_bluetooth_gattc_read(uint16_t conn_handle, uint16_t value_handle);
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// Write the value to the remote peripheral.
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int mp_bluetooth_gattc_write(uint16_t conn_handle, uint16_t value_handle, const uint8_t *value, size_t *value_len, unsigned int mode);
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// Initiate MTU exchange for a specific connection using the preferred MTU.
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int mp_bluetooth_gattc_exchange_mtu(uint16_t conn_handle);
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#endif // MICROPY_PY_BLUETOOTH_ENABLE_GATT_CLIENT
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#if MICROPY_PY_BLUETOOTH_ENABLE_L2CAP_CHANNELS
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int mp_bluetooth_l2cap_listen(uint16_t psm, uint16_t mtu);
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int mp_bluetooth_l2cap_connect(uint16_t conn_handle, uint16_t psm, uint16_t mtu);
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int mp_bluetooth_l2cap_disconnect(uint16_t conn_handle, uint16_t cid);
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int mp_bluetooth_l2cap_send(uint16_t conn_handle, uint16_t cid, const uint8_t *buf, size_t len, bool *stalled);
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int mp_bluetooth_l2cap_recvinto(uint16_t conn_handle, uint16_t cid, uint8_t *buf, size_t *len);
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#endif // MICROPY_PY_BLUETOOTH_ENABLE_L2CAP_CHANNELS
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#if MICROPY_PY_BLUETOOTH_ENABLE_HCI_CMD
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int mp_bluetooth_hci_cmd(uint16_t ogf, uint16_t ocf, const uint8_t *req, size_t req_len, uint8_t *resp, size_t resp_len, uint8_t *status);
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#endif // MICROPY_PY_BLUETOOTH_ENABLE_HCI_CMD
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/////////////////////////////////////////////////////////////////////////////
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// API implemented by modbluetooth (called by port-specific implementations):
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// Notify modbluetooth that a connection/disconnection event has occurred.
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void mp_bluetooth_gap_on_connected_disconnected(uint8_t event, uint16_t conn_handle, uint8_t addr_type, const uint8_t *addr);
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// Call this when any connection parameters have been changed.
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void mp_bluetooth_gap_on_connection_update(uint16_t conn_handle, uint16_t conn_interval, uint16_t conn_latency, uint16_t supervision_timeout, uint16_t status);
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#if MICROPY_PY_BLUETOOTH_ENABLE_PAIRING_BONDING
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|
// Call this when any connection encryption has been changed (e.g. during pairing).
|
|
void mp_bluetooth_gatts_on_encryption_update(uint16_t conn_handle, bool encrypted, bool authenticated, bool bonded, uint8_t key_size);
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|
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// Call this when you need the application to manage persistent key data.
|
|
// For get, if key is NULL, then the implementation must return the index'th matching key. Otherwise it should return a specific key.
|
|
// For set, if value is NULL, then delete.
|
|
// The "type" is stack-specific, but could also be used to implement versioning.
|
|
bool mp_bluetooth_gap_on_get_secret(uint8_t type, uint8_t index, const uint8_t *key, size_t key_len, const uint8_t **value, size_t *value_len);
|
|
bool mp_bluetooth_gap_on_set_secret(uint8_t type, const uint8_t *key, size_t key_len, const uint8_t *value, size_t value_len);
|
|
|
|
// Call this when a passkey verification needs to be processed.
|
|
void mp_bluetooth_gap_on_passkey_action(uint16_t conn_handle, uint8_t action, mp_int_t passkey);
|
|
#endif // MICROPY_PY_BLUETOOTH_ENABLE_PAIRING_BONDING
|
|
|
|
// Call this when a characteristic is written to.
|
|
void mp_bluetooth_gatts_on_write(uint16_t conn_handle, uint16_t value_handle);
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|
|
|
// Call this when an acknowledgment is received for an indication.
|
|
void mp_bluetooth_gatts_on_indicate_complete(uint16_t conn_handle, uint16_t value_handle, uint8_t status);
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|
|
|
// Call this when a characteristic is read from (giving the handler a chance to update the stored value).
|
|
// Return 0 to allow the read, otherwise a non-zero rejection reason (see MP_BLUETOOTH_GATTS_ERROR_*).
|
|
mp_int_t mp_bluetooth_gatts_on_read_request(uint16_t conn_handle, uint16_t value_handle);
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|
|
|
// Call this when an MTU exchange completes.
|
|
void mp_bluetooth_gatts_on_mtu_exchanged(uint16_t conn_handle, uint16_t value);
|
|
|
|
#if MICROPY_PY_BLUETOOTH_ENABLE_CENTRAL_MODE
|
|
// Notify modbluetooth that scan has finished, either timeout, manually, or by some other action (e.g. connecting).
|
|
void mp_bluetooth_gap_on_scan_complete(void);
|
|
|
|
// Notify modbluetooth of a scan result.
|
|
void mp_bluetooth_gap_on_scan_result(uint8_t addr_type, const uint8_t *addr, uint8_t adv_type, const int8_t rssi, const uint8_t *data, size_t data_len);
|
|
#endif // MICROPY_PY_BLUETOOTH_ENABLE_CENTRAL_MODE
|
|
|
|
#if MICROPY_PY_BLUETOOTH_ENABLE_GATT_CLIENT
|
|
// Notify modbluetooth that a service was found (either by discover-all, or discover-by-uuid).
|
|
void mp_bluetooth_gattc_on_primary_service_result(uint16_t conn_handle, uint16_t start_handle, uint16_t end_handle, mp_obj_bluetooth_uuid_t *service_uuid);
|
|
|
|
// Notify modbluetooth that a characteristic was found (either by discover-all-on-service, or discover-by-uuid-on-service).
|
|
void mp_bluetooth_gattc_on_characteristic_result(uint16_t conn_handle, uint16_t def_handle, uint16_t value_handle, uint8_t properties, mp_obj_bluetooth_uuid_t *characteristic_uuid);
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|
|
|
// Notify modbluetooth that a descriptor was found.
|
|
void mp_bluetooth_gattc_on_descriptor_result(uint16_t conn_handle, uint16_t handle, mp_obj_bluetooth_uuid_t *descriptor_uuid);
|
|
|
|
// Notify modbluetooth that service, characteristic or descriptor discovery has finished.
|
|
void mp_bluetooth_gattc_on_discover_complete(uint8_t event, uint16_t conn_handle, uint16_t status);
|
|
|
|
// Notify modbluetooth that a read has completed with data (or notify/indicate data available, use `event` to disambiguate).
|
|
void mp_bluetooth_gattc_on_data_available(uint8_t event, uint16_t conn_handle, uint16_t value_handle, const uint8_t **data, uint16_t *data_len, size_t num);
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|
|
|
// Notify modbluetooth that a read or write operation has completed.
|
|
void mp_bluetooth_gattc_on_read_write_status(uint8_t event, uint16_t conn_handle, uint16_t value_handle, uint16_t status);
|
|
#endif // MICROPY_PY_BLUETOOTH_ENABLE_GATT_CLIENT
|
|
|
|
#if MICROPY_PY_BLUETOOTH_ENABLE_L2CAP_CHANNELS
|
|
mp_int_t mp_bluetooth_on_l2cap_accept(uint16_t conn_handle, uint16_t cid, uint16_t psm, uint16_t our_mtu, uint16_t peer_mtu);
|
|
void mp_bluetooth_on_l2cap_connect(uint16_t conn_handle, uint16_t cid, uint16_t psm, uint16_t our_mtu, uint16_t peer_mtu);
|
|
void mp_bluetooth_on_l2cap_disconnect(uint16_t conn_handle, uint16_t cid, uint16_t psm, uint16_t status);
|
|
void mp_bluetooth_on_l2cap_send_ready(uint16_t conn_handle, uint16_t cid, uint8_t status);
|
|
void mp_bluetooth_on_l2cap_recv(uint16_t conn_handle, uint16_t cid);
|
|
#endif // MICROPY_PY_BLUETOOTH_ENABLE_L2CAP_CHANNELS
|
|
|
|
// For stacks that don't manage attribute value data (currently all of them), helpers
|
|
// to store this in a map, keyed by value handle.
|
|
|
|
typedef struct {
|
|
// Pointer to heap-allocated data.
|
|
uint8_t *data;
|
|
// Allocated size of data.
|
|
size_t data_alloc;
|
|
// Current bytes in use.
|
|
size_t data_len;
|
|
// Whether new writes append or replace existing data (default false).
|
|
bool append;
|
|
} mp_bluetooth_gatts_db_entry_t;
|
|
|
|
typedef mp_map_t *mp_gatts_db_t;
|
|
|
|
STATIC inline void mp_bluetooth_gatts_db_create(mp_gatts_db_t *db) {
|
|
*db = m_new(mp_map_t, 1);
|
|
}
|
|
|
|
STATIC inline void mp_bluetooth_gatts_db_reset(mp_gatts_db_t db) {
|
|
mp_map_init(db, 0);
|
|
}
|
|
|
|
void mp_bluetooth_gatts_db_create_entry(mp_gatts_db_t db, uint16_t handle, size_t len);
|
|
mp_bluetooth_gatts_db_entry_t *mp_bluetooth_gatts_db_lookup(mp_gatts_db_t db, uint16_t handle);
|
|
int mp_bluetooth_gatts_db_read(mp_gatts_db_t db, uint16_t handle, uint8_t **value, size_t *value_len);
|
|
int mp_bluetooth_gatts_db_write(mp_gatts_db_t db, uint16_t handle, const uint8_t *value, size_t value_len);
|
|
int mp_bluetooth_gatts_db_resize(mp_gatts_db_t db, uint16_t handle, size_t len, bool append);
|
|
|
|
#endif // MICROPY_INCLUDED_EXTMOD_MODBLUETOOTH_H
|