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18 lines
457 B
18 lines
457 B
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/* initializes i2c interface (master, 400kHz) */
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void i2c_init();
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/* reads len bytes from the i2c device addr into data */
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uint8_t i2c_read(uint8_t addr, uint8_t len, uint8_t *data);
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/* writes to an i2c device */
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uint8_t i2c_write(uint8_t addr, uint8_t len, uint8_t *data);
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/* writes, followed by a repeated start and a read */
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uint8_t i2c_write_read(uint8_t addr, uint8_t writelen, uint8_t* writedata, uint8_t readlen,
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uint8_t* readdata);
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