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34 lines
603 B
Go
34 lines
603 B
Go
package sysfs
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import (
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"errors"
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"fmt"
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"io"
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"os"
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"syscall"
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)
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const I2CSlave = 0x0703
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// NewI2cDevice creates a new io.ReadWriteCloser with the proper ioctrl given an i2c bus location and device address
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func NewI2cDevice(location string, address byte) (io.ReadWriteCloser, error) {
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file, err := OpenFile(location, os.O_RDWR, os.ModeExclusive)
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if err != nil {
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return nil, err
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}
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_, _, errno := Syscall(
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syscall.SYS_IOCTL,
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file.Fd(),
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I2CSlave,
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uintptr(address),
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)
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if errno != 0 {
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return nil, errors.New(fmt.Sprintf("Failed with syscall.Errno %v", errno))
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}
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return file, nil
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}
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