37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
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#ifndef Adafruit_I2CDevice_h
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#define Adafruit_I2CDevice_h
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#include <Arduino.h>
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#include <Wire.h>
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///< The class which defines how we will talk to this device over I2C
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class Adafruit_I2CDevice {
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public:
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Adafruit_I2CDevice(uint8_t addr, TwoWire *theWire = &Wire);
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uint8_t address(void);
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bool begin(bool addr_detect = true);
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void end(void);
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bool detected(void);
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bool read(uint8_t *buffer, size_t len, bool stop = true);
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bool write(const uint8_t *buffer, size_t len, bool stop = true,
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const uint8_t *prefix_buffer = nullptr, size_t prefix_len = 0);
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bool write_then_read(const uint8_t *write_buffer, size_t write_len,
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uint8_t *read_buffer, size_t read_len,
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bool stop = false);
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bool setSpeed(uint32_t desiredclk);
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/*! @brief How many bytes we can read in a transaction
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* @return The size of the Wire receive/transmit buffer */
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size_t maxBufferSize() { return _maxBufferSize; }
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private:
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uint8_t _addr;
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TwoWire *_wire;
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bool _begun;
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size_t _maxBufferSize;
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bool _read(uint8_t *buffer, size_t len, bool stop);
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};
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#endif // Adafruit_I2CDevice_h
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