mirror of https://github.com/EspoTek/Labrador.git
80 lines
1.5 KiB
C++
80 lines
1.5 KiB
C++
#ifndef I2CDECODER_H
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#define I2CDECODER_H
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#include "isobuffer.h"
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#include "isobufferbuffer.h"
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#include <QObject>
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#include <QTimer>
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#include <mutex>
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namespace i2c
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{
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enum class transmissionState: uint8_t
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{
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unknown,
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idle,
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address,
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data
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};
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enum class edge: uint8_t
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{
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rising,
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falling,
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held_high,
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held_low
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};
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constexpr uint8_t addressBitStreamLength = 9;
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constexpr uint8_t dataBitStreamLength = 9;
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constexpr uint32_t I2C_BUFFER_LENGTH = 4096;
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class i2cDecoder : public QObject
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{
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Q_OBJECT
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public:
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explicit i2cDecoder(isoBuffer* sda_in, isoBuffer* scl_in, QPlainTextEdit* console_in);
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~i2cDecoder();
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// misc
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isoBuffer* sda;
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isoBuffer* scl;
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QPlainTextEdit* console;
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isoBufferBuffer* serialBuffer = nullptr;
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std::mutex mutex;
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QTimer *updateTimer;
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// State vars
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uint8_t currentSdaValue = 0;
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uint8_t previousSdaValue = 0;
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uint8_t currentSclValue = 0;
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uint8_t previousSclValue = 0;
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uint64_t serialPtr_bit = 0;
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transmissionState state = transmissionState::unknown;
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bool consoleStateInvalid;
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// Data Transmission
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uint8_t currentBitIndex = 0;
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uint16_t currentBitStream;
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// Member functions
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void updateBitValues();
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void runStateMachine();
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void run();
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int serialDistance(isoBuffer* buffer);
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edge edgeDetection(uint8_t current, uint8_t prev);
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void decodeAddress(edge sdaEdge, edge sclEdge);
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void decodeData(edge sdaEdge, edge sclEdge);
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void startCondition();
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void stopCondition();
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void reset();
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signals:
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public slots:
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void updateConsole();
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};
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} // Namespace i2c
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#endif // UARTSTYLEDECODER_H
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