Package i2c

func TenBit ¶

func TenBit(addr int) int

TenBit marks an I2C address as a 10-bit address.

type Devfs ¶

Devfs is an I2C driver that works against the devfs. You need to load the "i2c-dev" kernel module to use this driver.

type Devfs struct {
    // Dev is the I2C bus device, e.g. /dev/i2c-1. Required.
    Dev string
}

func (*Devfs) Open ¶

func (d *Devfs) Open(addr int, tenbit bool) (driver.Conn, error)

type Device ¶

Device represents an I2C device. Devices must be closed once they are no longer in use.

type Device struct {
    // contains filtered or unexported fields
}

func Open ¶

func Open(o driver.Opener, addr int) (*Device, error)

Open opens a connection to an I2C device. All devices must be closed once they are no longer in use. For devices that use 10-bit I2C addresses, addr can be marked as a 10-bit address with TenBit.

d, err := i2c.Open(&i2c.Devfs{Dev: "/dev/i2c-1"}, 0x39)
if err != nil {
    panic(err)
}

// opens a 10-bit address
d, err = i2c.Open(&i2c.Devfs{Dev: "/dev/i2c-1"}, i2c.TenBit(0x78))
if err != nil {
    panic(err)
}

_ = d

func (*Device) Close ¶

func (d *Device) Close() error

Close closes the device and releases the underlying sources.

func (*Device) Read ¶

func (d *Device) Read(buf []byte) error

Read reads len(buf) bytes from the device.

func (*Device) ReadReg ¶

func (d *Device) ReadReg(reg byte, buf []byte) error

ReadReg is similar to Read but it reads from a register.

func (*Device) Write ¶

func (d *Device) Write(buf []byte) (err error)

Write writes the buffer to the device. If it is required to write to a specific register, the register should be passed as the first byte in the given buffer.

func (*Device) WriteReg ¶

func (d *Device) WriteReg(reg byte, buf []byte) (err error)

WriteReg is similar to Write but writes to a register.

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