i2cget man page on YellowDog

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I2CGET(8)							     I2CGET(8)

NAME
       i2cget - read from I2C/SMBus chip registers

SYNOPSIS
       i2cget [-y] i2cbus chip-address [data-address [mode]]
       i2cget -V


DESCRIPTION
       i2cget  is a small helper program to read registers visible through the
       I2C bus (or SMBus).

OPTIONS
       -V     Display the version and exit.

       -y     Disable interactive mode. By default, i2cget  will  wait	for  a
	      confirmation from the user before messing with the I2C bus. When
	      this flag is used, it will perform the operation directly.  This
	      is mainly meant to be used in scripts. Use with caution.

       There  are  two required options to i2cget. i2cbus indicates the number
       of the I2C bus to be scanned.  This number should correspond to one  of
       the  busses  listed by i2cdetect -l. chip-address specifies the address
       of the chip on that bus, and is an integer between 0x03 and 0x77.

       data-address specifies the address on that chip to read from, and is an
       integer	between 0x00 and 0xFF. If omitted, the currently active regis‐
       ter will be read (if that makes sense for the considered chip).

       The mode parameter, if specified, is one of the letters b, w or c, cor‐
       responding  to  a read byte data, a read word data or a write byte/read
       byte transaction, respectively. A p can also be appended	 to  the  mode
       parameter  to  enable  PEC.  If	the  mode parameter is omitted, i2cget
       defaults to a read byte data transaction, unless data-address  is  also
       omitted,	 in  which  case the default (and only valid) transaction is a
       single read byte.

WARNING
       i2cget can be extremely dangerous if used improperly. I2C and SMBus are
       designed	 in such a way that an SMBus read transaction can be seen as a
       write transaction by certain chips. This is particularly true  if  set‐
       ting  mode  to cp (write byte/read byte with PEC). Be extremely careful
       using this program.

CONFORMING TO
       lm_sensors-2.x

SEE ALSO
       i2cdump(8), i2cset(8)

AUTHOR
       Jean Delvare http://www.lm-sensors.nu/ This manual  page	 was  strongly
       inspired from those written by David Z Maze for i2cset.

				September 2005			     I2CGET(8)
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