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I2CSCAN(8)                  System Manager's Manual                 I2CSCAN(8)

NAME
     i2cscan - scan an IIC bus for devices

SYNOPSIS
     i2cscan [-r] i2cdev

DESCRIPTION
     The i2cscan utility scans the Inter-Integrated Circuit bus (iic(4))
     specified by i2cdev to determine which addresses respond.

     i2cdev can be specified with or without the /dev prefix.  For example,
     /dev/iic0 or iic0.

     Available options:

     -r      scan using 1 byte reads instead of quick writes.

     WARNING!  Using this utility can access some devices in such a manner as
     to leave them in an unstable or unusable state.  It can also lock up the
     entire iic(4) bus.  Don't use this utility unless you know what you're
     doing and can accept all sorts of unforeseen consequences.

EXIT STATUS
     The i2cscan utility exits 0 on success, and >0 if an error occurs.

EXAMPLES
     Scan the first IIC bus found on the system for devices:

           i2cscan /dev/iic0

SEE ALSO
     iic(4)

NetBSD 8.0                     November 26, 2015                    NetBSD 8.0