mirror of
https://github.com/lowobservable/coax.git
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58 lines
1.5 KiB
C++
58 lines
1.5 KiB
C++
// Copyright (c) 2019, Andrew Kay
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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#pragma once
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#define ERROR_RX_RECEIVER_ACTIVE -5
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#define ERROR_RX_TIMEOUT -2
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#define ERROR_RX_OVERFLOW -3
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class NewCoaxDataBus;
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enum NewCoaxReceiverState { Disabled, Idle, Receiving, Received };
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class NewCoaxReceiver
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{
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public:
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NewCoaxReceiver(NewCoaxDataBus &dataBus) : _dataBus(dataBus) { };
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void begin();
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void enable();
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void disable();
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void reset();
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void activeInterrupt();
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void dataAvailableInterrupt();
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void errorInterrupt();
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private:
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NewCoaxDataBus &_dataBus;
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volatile NewCoaxReceiverState _state = Disabled;
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uint16_t read();
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};
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class NewCoaxDataBus
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{
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public:
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void setMode(uint8_t mode, bool force);
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uint16_t read();
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void write(uint16_t word);
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private:
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int _mode = -1;
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uint16_t encode(uint16_t word);
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uint16_t decode(uint16_t word);
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};
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