i2cscan(8) - NetBSD Manual Pages

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I2CSCAN(8)              NetBSD 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)) spec-
     ified 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 9.2                     November 26, 2015                    NetBSD 9.2