Bitcoin Forum

#!/bin/bash

TEMP_HIGH=95 # degrees C
FREQ_MAX=900 # MHz
FREQ_STEP_UP=5 # MHz
FREQ_STEP_DOWN=30 # MHz
MEM_FREQ=150 # MHz
HOLD_TIME=15 # sec
TOLERANCE=2 # degrees C
IGNORE_TEMP=$((TEMP_HIGH-TOLERANCE))
OUTPUT_INTERVAL=1 # sec

holds=( 0 0 0 0 0 0 0 0 )

setclock() {
id=$1
clock=$2
if [ $clock -gt $FREQ_MAX ]; then
clock=$FREQ_MAX
fi
aticonfig --adapter=$id --odsc=$clock,$MEM_FREQ 2>&1 > /dev/null
holds[$id]=$HOLD_TIME
}

reclock() {
id=$1
temp=$2
clock=$3
flag='-'
hold=${holds[$id]}
if [ $hold -gt 0 ]; then
holds[$i]=$((${holds[$id]}-OUTPUT_INTERVAL))
elif [ $temp -ge $TEMP_HIGH ]; then
setclock $id $((clock-FREQ_STEP_DOWN))
flag='v'
elif [ $clock -lt $FREQ_MAX -a $temp -lt $IGNORE_TEMP ]; then
setclock $id $((clock+FREQ_STEP_UP))
flag='^'
fi
echo -n "$temp ($clock$flag) "
}

aticonfig --od-enable 2>&1 > /dev/null

while true
do
unset T
unset C
temps=`aticonfig --adapter=all --odgt | grep : | sed 's/.* - \([0-9]*\)\..*/\1/'`
clocks=`aticonfig --adapter=all --odgc | grep "Current Peak" | sed 's/.*: *\([0-9]*\) .*/\1/'`
i=0
for val in $temps; do
T[$i]=$val
i=$((i+1))
done

i=0
for val in $clocks; do
C[$i]=$val
i=$((i+1))
done

i=0
while [ $i -lt ${#T[*]} ]; do
reclock $i ${T[$i]} ${C[$i]}
i=$((i+1))
done

echo
sleep $OUTPUT_INTERVAL
done