50 lines
1.3 KiB
C++
50 lines
1.3 KiB
C++
// Databus Adapter for the Arduino Wire bus (I2C bus)
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#ifndef _Arduino_Wire_H_
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#define _Arduino_Wire_H_
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#include "Arduino_DataBus.h"
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#include <Wire.h>
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#ifndef TWI_BUFFER_LENGTH
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#if defined(I2C_BUFFER_LENGTH)
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#define TWI_BUFFER_LENGTH I2C_BUFFER_LENGTH
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#else
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#define TWI_BUFFER_LENGTH 32
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#endif
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#endif
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class Arduino_Wire : public Arduino_DataBus
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{
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public:
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Arduino_Wire(uint8_t i2c_addr, int8_t commandPrefix, int8_t dataPrefix, TwoWire *wire = &Wire);
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bool begin(int32_t speed = GFX_NOT_DEFINED, int8_t dataMode = GFX_NOT_DEFINED) override;
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void beginWrite() override;
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void endWrite() override;
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void writeCommand(uint8_t) override;
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void writeCommand16(uint16_t) override;
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void writeCommandBytes(uint8_t *data, uint32_t len) override;
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void write(uint8_t) override;
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void write16(uint16_t) override;
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void writeRepeat(uint16_t p, uint32_t len) override;
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void writeBytes(uint8_t *data, uint32_t len) override;
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void writePixels(uint16_t *data, uint32_t len) override;
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protected:
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void writeRegister(uint8_t reg, uint8_t *data, size_t len);
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uint8_t readRegister(uint8_t reg, uint8_t *data, size_t len);
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uint8_t output_buf = 0;
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bool is_found;
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uint8_t _i2c_addr;
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uint8_t _command_prefix;
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uint8_t _data_prefix;
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TwoWire *_wire;
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int32_t _speed;
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private:
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};
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#endif // _Arduino_Wire_H_
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