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#!/bin/bash
#Calibrates wl1271 Wifi Chip and Sets Power Levels
OEM_DIR="/var/oem"
NVS_DIR="mts"
NVS_OEM_FILE="$OEM_DIR/$NVS_DIR/wl1271-nvs.bin"
NVS_OEM_INI="$OEM_DIR/$NVS_DIR/TQS_S_2.6.ini"
NVS_FILE="/lib/firmware/ti-connectivity/wl1271-nvs.bin"
NVS_DEFAULT_FILE="$NVS_FILE.factory"
NVS_DEFAULT_INI="/usr/share/ti/wifi-utils/ini_files/127x/TQS_S_2.6.ini"
WIFI_PWR_LINE_B="FEM1_TxPerChannelPowerLimits_2_4G_11b ="
WIFI_PWR_LINE_OFDM="FEM1_TxPerChannelPowerLimits_2_4G_OFDM ="
WIFI_PWR_ARR_SIZE=14
WIFI_PWR_INDEX_START=2
WIFI_PWR_INDEX_END=$(( $WIFI_PWR_INDEX_START + $WIFI_PWR_ARR_SIZE))
WIFIMAC=$(mts-io-sysfs show mac-wifi)
CHANNEL="ALL"
# Reset in case getopts has been used previously in the shell.
OPTIND=1
function show_help() {
echo "Usage: $0 -m <WIFI MAC> -c <CHANNEL> <POWER LIMIT mBm>"
echo " Example: $0 -c 1 1250"
echo " Sets max transmit power to 12.5 dBm on channel 1"
echo "Note: Using no options will calibrate to factory settings"
}
while getopts "h?c:m:" opt; do
case "$opt" in
h|\?)
show_help
exit 0
;;
c) CHANNEL=$OPTARG
;;
m) WIFIMAC=$OPTARG
;;
esac
done
shift $((OPTIND-1))
[ "$1" = "--" ] && shift
POWER=$1
regexIsNumber='^[0-9]+$'
if [ "$POWER" != "" ]; then
if ! [[ $POWER =~ $regexIsNumber ]] ; then
echo "Error: Power is Not a Number" >&2; exit 1
fi
if [ $POWER -lt 0 ]; then
echo "Error: Minimum power lvl is 0 mBm" >&2; exit 1
fi
if [ $POWER -gt 3000 ]; then
echo "Error: Maximum power lvl is 3000 mBm" >&2; exit 1
fi
fi
if [ "$CHANNEL" != "ALL" ]; then
if ! [[ $CHANNEL =~ $regexIsNumber ]] ; then
echo "Error: Channel is Not a Number" >&2; exit 1
fi
if [ $CHANNEL -gt 14 ] || [ $CHANNEL -lt 1 ]; then
echo "Error: Valid Channels are 1-14" >&2; exit 1
fi
fi
echo "starting wifi calibration..."
/etc/init.d/wifi stop >/dev/null 2>&1
mts-io-sysfs store wlan-enabled 0
sleep 1
mts-io-sysfs store wlan-enabled 1
sleep 1
modprobe atmel_mci
sleep 5
mount -o remount,rw /var/oem
echo "removing $NVS_OEM_FILE"
# WARNING: need remove file after 'modprobe atmel_mci'
rm -f $NVS_OEM_FILE
mkdir -p $OEM_DIR/$NVS_DIR
if [ ! -f $NVS_OEM_INI ]; then
cp $NVS_DEFAULT_INI $NVS_OEM_INI
fi
#Pull Applicable Fields
lineB=$(grep "$WIFI_PWR_LINE_B" $NVS_OEM_INI) #GET B TX PWR LMT LINE
lineOFDM=$(grep "$WIFI_PWR_LINE_OFDM" $NVS_OEM_INI) #GET OFDM TX PWR LMT LINE
lineB=${lineB%%#*} #REMOVE TRAILING COMMENT LINE
lineOFDM=${lineOFDM%%#*} #REMOVE TRAILING COMMENT LINE
if [ "$POWER" != "" ]; then
POWER=$((($POWER * 2) / 100 )) #POWER NEEDS TO BE IN 1/2 dB
if [ "$CHANNEL" == "ALL" ]; then
echo "setting power levels on all channels..."
for ((i=$WIFI_PWR_INDEX_START; i < $WIFI_PWR_INDEX_END; i++)); do
pwrLine="$pwrLine $POWER"
done
else
echo "setting power level on channel $CHANNEL..."
channelIndex=$(( $WIFI_PWR_INDEX_START + $CHANNEL - 1 ))
IFS=', ' read -a array <<< "$lineB"
for ((i=$WIFI_PWR_INDEX_START; i < $WIFI_PWR_INDEX_END; i++)); do
if [ "$i" == "$channelIndex" ]; then
pwr=$POWER
else
pwr=${array[$i]}
fi
pwrLine="$pwrLine $pwr"
done
fi
newLineB="$WIFI_PWR_LINE_B $pwrLine"
newLineOFDM="$WIFI_PWR_LINE_OFDM $pwrLine"
sed -i "s/$lineB/$newLineB/g" "$NVS_OEM_INI"
sed -i "s/$lineOFDM/$newLineOFDM/g" "$NVS_OEM_INI"
else
#FACTORY SETTINGS
#960 mBm WAS MEASURED IN LAB TO PRODUCE 12.5 dBm on DEC2013
#960 mBm => 19 steps in 1/2 dB
POWER=19
echo "setting power levels to factory settings..."
channel=1
for ((i=$WIFI_PWR_INDEX_START; i < $WIFI_PWR_INDEX_END; i++)); do
if [ $channel -gt 11 ]; then
#Set Channels 12 - 14 to zero power output
pwrLine="$pwrLine 0"
else
pwrLine="$pwrLine $POWER"
fi
let channel=channel+1
done
newLineB="$WIFI_PWR_LINE_B $pwrLine"
newLineOFDM="$WIFI_PWR_LINE_OFDM $pwrLine"
sed -i "s/$lineB/$newLineB/g" "$NVS_OEM_INI"
sed -i "s/$lineOFDM/$newLineOFDM/g" "$NVS_OEM_INI"
fi
sync
echo "calibrating..."
calibrator plt autocalibrate wlan0 \
/lib/modules/$(uname -r)/kernel/drivers/net/wireless/ti/wlcore/wlcore_sdio.ko \
$NVS_OEM_INI \
$NVS_FILE $WIFIMAC
sync
/etc/init.d/wifi restart >/dev/null 2>&1
mount -o remount,ro /var/oem
echo "...calibration finished"
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