29 lines
624 B
C
29 lines
624 B
C
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#ifndef I2C_H_QWERTY
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#define I2C_H_QWERTY
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#include <stdio.h>
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#include <avr/io.h>
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extern uint8_t i2c_error;
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extern uint8_t i2c_status;
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#define I2C_ERR_START 0 // Timeout start condition
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#define I2C_ERR_RESTART 1 // Timeout start condition
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#define I2C_ERR_WRITE 2 // Timeout byte transmission
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#define I2C_ERR_READACK 3 // Timeout read acknowledge
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#define I2C_ERR_READNACK 4 // Timeout read nacknowledge
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void i2c_init(void);
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void i2c_start(void);
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void i2c_write(uint8_t byte);
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void i2c_restart(void);
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uint8_t i2c_read_ack(void);
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uint8_t i2c_read_nack(void);
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void i2c_stop(void);
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#endif
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