#0=0db, 1=6.6db, 2=13dB, 3=20db
|
amixer cset -c 0 name="ADC MIC Group 2 Left Volume" 3
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amixer cset -c 0 name="ADC MIC Group 3 Left Volume" 3
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amixer cset -c 0 name="ADC MIC Group 2 Right Volume" 3
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amixer cset -c 0 name="ADC MIC Group 3 Right Volume" 3
|
|
#12=0dB 18=9db
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amixer cset -c 0 name="ADC ALC Group 2 Left Volume" 12
|
amixer cset -c 0 name="ADC ALC Group 3 Left Volume" 12
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amixer cset -c 0 name="ADC ALC Group 2 Right Volume" 12
|
amixer cset -c 0 name="ADC ALC Group 3 Right Volume" 12
|
|
#loop back gain
|
amixer cset -c 0 name="ADC ALC Group 1 Left Volume" 18
|
|
# lineout gain
|
#0=490mv，1=890mv
|
amixer cset -c 0 name='DAC LINEOUT Right Volume' 2
|
amixer cset -c 0 name='DAC LINEOUT Left Volume' 2
|
|
amixer cset -c 0 name='DAC HPMIX Left Volume' 1
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amixer cset -c 0 name='DAC HPMIX Right Volume' 1
|
|
vol=80
|
if [ -f "/userdata/cfg/volume.conf" ]; then
|
vol=`cat /userdata/cfg/volume.conf`
|
echo "cat volume.conf $vol"
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if [ -z "$vol" ]; then
|
echo "vol is empty"
|
vol=80
|
fi
|
|
if [ -n "$vol" ]; then
|
echo "vol is not empty,vol=$vol"
|
fi
|
|
if [ $vol -gt 80 ]; then
|
echo "vol >80 force vol=80"
|
echo 80 > /userdata/cfg/volume.conf
|
vol=80
|
fi
|
else
|
echo "no volume.conf file"
|
echo 80 > /userdata/cfg/volume.conf
|
fi
|
|
echo "===!!!vol=$vol"
|
amixer set Master Playback $vol
|
