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I2C Bus (i2c)

I2C bus controller.

Device Type​

DEVICE_TYPE_I2C (23)

Struct​

struct i2c_msg_t {
    uint16_t addr;
    uint16_t flags;
    int16_t len;
    uint8_t * buf;
};

struct i2c_t {
    char * name;
    int (*xfer)(struct i2c_t * i2c, struct i2c_msg_t * msgs, int num);
    void * priv;
};

Key API​

FunctionDescription
search_i2c(name)Find I2C bus by name
register_i2c(i2c, drv)Register I2C bus
unregister_i2c(i2c)Unregister I2C bus
i2c_transfer(i2c, msgs, num)Execute I2C message transfer
i2c_master_send(dev, buf, count)I2C master send
i2c_master_recv(dev, buf, count)I2C master receive

Description​

I2C bus controller interface. Supports multi-message transfer with configurable flags such as 10-bit addressing and repeated start. The i2c_device_t handle binds bus name and slave address for convenient master send/receive operations.