e152d0c197
The goal of this commit is to allow using ble.gatts_notify() at any time, even if the stack is not ready to send the notification right now. It also addresses the same issue for ble.gatts_indicate() and ble.gattc_write() (without response). In addition this commit fixes the case where the buffer passed to write-with-response wasn't copied, meaning it could be modified by the caller, affecting the in-progress write. The changes are: - gatts_notify/indicate will now run in the background if the ACL buffer is currently full, meaning that notify/indicate can be called at any time. - gattc_write(mode=0) (no response) will now allow for one outstanding write. - gattc_write(mode=1) (with response) will now copy the buffer so that it can't be modified by the caller while the write is in progress. All four paths also now track the buffer while the operation is in progress, which prevents the GC free'ing the buffer while it's still needed.
70 lines
2.5 KiB
C
70 lines
2.5 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) 2020 Damien P. George
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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_BTSTACK_MODBLUETOOTH_BTSTACK_H
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#define MICROPY_INCLUDED_EXTMOD_BTSTACK_MODBLUETOOTH_BTSTACK_H
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#if MICROPY_PY_BLUETOOTH && MICROPY_BLUETOOTH_BTSTACK
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#include "extmod/modbluetooth.h"
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#include "lib/btstack/src/btstack.h"
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typedef struct _mp_btstack_pending_op_t mp_btstack_pending_op_t;
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typedef struct _mp_bluetooth_btstack_root_pointers_t {
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// This stores both the advertising data and the scan response data, concatenated together.
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uint8_t *adv_data;
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// Total length of both.
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size_t adv_data_alloc;
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// Characteristic (and descriptor) value storage.
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mp_gatts_db_t gatts_db;
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#if MICROPY_PY_BLUETOOTH_ENABLE_CENTRAL_MODE
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// Registration for notify/indicate events.
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gatt_client_notification_t notification;
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btstack_linked_list_t pending_ops;
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#endif
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} mp_bluetooth_btstack_root_pointers_t;
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enum {
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MP_BLUETOOTH_BTSTACK_STATE_OFF,
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MP_BLUETOOTH_BTSTACK_STATE_STARTING,
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MP_BLUETOOTH_BTSTACK_STATE_ACTIVE,
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MP_BLUETOOTH_BTSTACK_STATE_TIMEOUT,
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};
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extern volatile int mp_bluetooth_btstack_state;
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void mp_bluetooth_btstack_port_init(void);
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void mp_bluetooth_btstack_port_deinit(void);
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void mp_bluetooth_btstack_port_start(void);
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#endif // MICROPY_PY_BLUETOOTH && MICROPY_BLUETOOTH_BTSTACK
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#endif // MICROPY_INCLUDED_EXTMOD_BTSTACK_MODBLUETOOTH_BTSTACK_H
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