aa28d4f315
This is handy for remote characteristics because it allows for the PacketBuffer binding code to have the correct max size. This PR also adds checks so we don't write outside the outgoing buffer.
55 lines
2.2 KiB
C
55 lines
2.2 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) 2019-2020 Scott Shawcroft for Adafruit Industries
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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_NRF_COMMON_HAL_BLEIO_PACKETBUFFER_H
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#define MICROPY_INCLUDED_NRF_COMMON_HAL_BLEIO_PACKETBUFFER_H
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#include "nrf_soc.h"
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#include "py/ringbuf.h"
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#include "shared-bindings/_bleio/Characteristic.h"
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typedef struct {
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mp_obj_base_t base;
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bleio_characteristic_obj_t *characteristic;
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// Ring buffer storing consecutive incoming values.
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ringbuf_t ringbuf;
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// Two outgoing buffers to alternate between. One will be queued for transmission by the SD and
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// the other is waiting to be queued and can be extended.
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uint8_t *outgoing[2];
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volatile uint16_t pending_size;
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// We remember the conn_handle so we can do a NOTIFY/INDICATE to a client.
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// We can find out the conn_handle on a Characteristic write or a CCCD write (but not a read).
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volatile uint16_t conn_handle;
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uint16_t max_packet_size;
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uint8_t pending_index;
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uint8_t write_type;
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bool client;
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bool packet_queued;
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} bleio_packet_buffer_obj_t;
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#endif // MICROPY_INCLUDED_NRF_COMMON_HAL_BLEIO_PACKETBUFFER_H
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