95 lines
3.1 KiB
C++
95 lines
3.1 KiB
C++
#pragma once
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#include <stdint.h>
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#include "ringbuffer.h"
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//#define USE_RINGBUFFER
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class W433DataReciver
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{
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public:
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static constexpr uint8_t RINGBUFFER_LENGTH = 32;
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//errors
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static constexpr uint8_t ERR_SYNC_FAIL = 1;
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static constexpr uint8_t ERR_NO_SYNC_END = 2;
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static constexpr uint8_t ERR_BYTE_ASM = 3;
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static constexpr uint8_t ERR_WRONG_SIG = 4;
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static constexpr uint8_t ERR_CHECKSUM = 5;
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private:
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static W433DataReciver* instance;
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//constants
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static constexpr uint8_t CLOCK_DEVIDER = 1;
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static constexpr uint16_t LARGE_TIME = 2000;
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static constexpr uint16_t SMALL_TIME = 500;
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static constexpr uint16_t SYNC_TIME = 800;
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static constexpr uint8_t SYNC_TIME_TOLERANCE = SYNC_TIME*0.20;
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static constexpr uint16_t SYNC_END_TIME_TOLERANCE = SYNC_TIME*0.50;
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static constexpr uint16_t LARGE_TIME_TOLERANCE = LARGE_TIME*0.30;
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static constexpr uint8_t SMALL_TIME_TOLERANCE = SMALL_TIME*0.30;
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static constexpr uint16_t DISCARD_TIME = SMALL_TIME*0.6;
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static constexpr uint16_t TICKS_PER_US = (F_CPU) / (1000000*CLOCK_DEVIDER) ;
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static constexpr uint8_t signature = 0xA5;
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static constexpr int8_t polarity = 1;
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static constexpr uint8_t LOOKING_FOR_SYNC = 0;
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static constexpr uint8_t LOOKING_FOR_SYNC_END = 1;
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static constexpr uint8_t LOOKING_FOR_SIGNATURE = 2;
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static constexpr uint8_t RECVING_PACKET = 3;
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static constexpr uint8_t RECVING_PACKET_CHECKSUM = 4;
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//variables
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volatile unsigned char *_port;
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unsigned char _pin;
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volatile uint16_t *_timerRegister;
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volatile uint8_t *_timerOverflowRegister;
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#ifdef USE_RINGBUFFER
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RingBuffer<RINGBUFFER_LENGTH, uint8_t> _ringBuffer;
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#endif
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volatile uint16_t previousTime = 0;
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volatile uint8_t timesBufferIndex = 0;
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volatile int16_t timesBuffer[33];
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volatile uint8_t packetIndex = 0;
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volatile uint32_t packet = 0;
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void (* const _packetCallback)(uint32_t, void*);
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void (* const _errorCodeHandler)(uint8_t, void*);
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void* const _userData;
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volatile uint8_t syncCount = 0;
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volatile uint8_t syncFailCount = 0;
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volatile uint8_t state = 0;
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//private functions
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int8_t reciveBit(uint8_t index);
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inline uint8_t assmbleByte();
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inline void setState(const uint8_t stateIn);
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inline bool recivedByte(const uint16_t elapsedTime);
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inline bool reciveSync(const uint16_t elapsedTime);
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inline void error(const uint8_t errorCode);
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static inline bool isTime(int16_t input, const uint16_t time, const bool state = true, const uint16_t tollerance = 100);
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public:
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W433DataReciver(volatile unsigned char* const port , const unsigned char pin, volatile uint16_t * timerRegister, volatile uint8_t* const timerOverflowRegister, void (*packetCallback)(uint32_t, void*) = nullptr, void* userData = nullptr, void (*errorCodeHandler)(uint8_t, void*) = nullptr );
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~W433DataReciver();
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static void initTimer();
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static void staticInterrupt();
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void waitForReciveIdle(const uint16_t timeoutMs = 10000);
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void interrupt();
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#ifdef USE_RINGBUFFER
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RingBuffer<RINGBUFFER_LENGTH, uint8_t>* getRingBuffer();
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#endif
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};
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