Whole document tree 3. The mainboard's sensors
3.1 Getting the driversGet the lm_sensors 2.6.2 or more recent: http://www.lm-sensors.nu/archive/lm_sensors-2.6.2.tar.gz You'll need kernel source too in order to compile that one 3.2 Installing themtar -xzvf i2c-2.6.2.tar.gz cd i2c-2.6.2 make && make install Then there was a problem when making install for me, so if it doesn't work, just do the following: cp kernel/i2c-core.o /lib/modules/`uname -r`/misc/i2c-core.o cp kernel/i2c-proc.o /lib/modules/`uname -r`/misc/i2c-proc.o Now let's copy the specific driver: cp kernel/chips/it87.o /lib/modules/`uname -r`/misc/it87.o ok now cp prog/sensors/sensors /usr/bin/sensors --------------------------------------------------------------------
Edit /etc/modules.conf and add to it the following lines:
alias char-major-89 i2c-dev options it87 temp_type=0x31
now: modprobe i2c-proc modprobe it87 modprobe i2c-isa sensors should output you some data now as root you should edit your /etc/sensors.conf search for that line: chip "it87-*" and below you should be able to modify everything to get the right data, here is a copy of what i have in there: (please note that temp1 is trash and only temp2 and temp3 should be kept) -------------------------------------------------------------------- chip "it87-*" # The values below have been tested on Asus CUSI, CUM motherboards. # Voltage monitors as advised in the It8705 data sheet label in0 "VCore" label in1 "Vcc2.5v" label in2 "Vcc5v" label in3 "+5V" label in4 "+12V" label in5 "-12V" label in6 "-5V" label in7 "SB 5V" label in8 "V battery"
set in0_min 1.5 * 0.95 set in0_max 1.5 * 1.05 set in1_min 2.4 set in1_max 2.6 set in2_min 3.3 * 0.95 set in2_max 3.3 * 1.05 set in3_min 5.0 * 0.95 set in3_max 5.0 * 1.05 set in4_min 12 * 0.95 set in4_max 12 * 1.05 set in5_min -12 * 0.95 set in5_max -12 * 1.05 set in6_min -5 * 0.95 set in6_max -5 * 1.05 set in7_min 5 * 0.95 set in7_max 5 * 1.05
# vid not monitored by IT8705F ignore vid # For this family of chips the negative voltage equation is different from # the lm78. The chip uses two external resistor for scaling but one is # tied to a positive reference voltage. See ITE8705/12 datasheet (SIS950 # data sheet is wrong) # Vs = (1 + Rin/Rf) * Vin - (Rin/Rf) * Vref. # Vref = 4.096 volts, Vin is voltage measured, Vs is actual voltage. compute in2 (1 + 1)*@ , @/(1 + 1) compute in3 ((6.8/10)+1)*@ , @/((6.8/10)+1) compute in4 ((30/10) +1)*@ , @/((30/10) +1) # The next two are negative voltages (-12 and -5). # The following formulas must be used. Unfortunately the datasheet # does not give recommendations for Rin, Rf, but we can back into # them based on a nominal +2V input to the chip, together with a 4.096V Vref. # Formula: # actual V = (Vmeasured * (1 + Rin/Rf)) - (Vref * (Rin/Rf)) # For -12V input use Rin/Rf = 6.68 # For -5V input use Rin/Rf = 3.33 # Then you can convert the forumula to a standard form like: compute in5 (7.67 * @) - 27.36 , (@ + 27.36) / 7.67 compute in6 (4.33 * @) - 13.64 , (@ + 13.64) / 4.33 # compute in7 ((6.8/10)+1)*@ , @/((6.8/10)+1)
# Temperature label temp3 "Processor" set temp3_over 40 set temp3_hyst 20
label temp2 "Mainboard" set temp2_over 45 set temp2_hyst 25 ignore temp1 # Fans label fan1"Processor's Fan" set fan1_min 2000 ignore fan3 ignore fan2
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