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sasada/RaspberryPi

IPアドレスの取り出し†

ipaddr.sh

#!/bin/bash

# IP address
ifconfig eth0 | grep "inet" | awk '{ print $1 }' | cut -d ":" -f 2

IPアドレスをLCDに表示（改良前）†

i2c-lcd-test.sh

#!/bin/bash
function usage {
    echo "Usage: $0 [-ic] [-p pos] message" > /dev/stderr;
    exit 1
}
[ $# = 0 ] && usage

while getopts "icp:" flag; do
    case $flag in
	\?) usage ;;
	i)  i2cset -y 1 0x3e 0 0x38 0x39 0x14 0x78 0x5e 0x6c i
	    sleep 0.25
	    i2cset -y 1 0x3e 0 0x0c 0x01 0x06 i
	    sleep 0.05
	    ;;
	c)  i2cset -y 1 0x3e 0 0x01 ;;
	p)  i2cset -y 1 0x3e 0 $((OPTARG+128)) ;;
    esac
done
shift $((OPTIND-1))
[ $# = 0 ] && exit

LANG=C
MSG=`echo -n "$1" | perl -pe '$_=join" ",map{ord }split//'`
echo $MSG
i2cset -y 1 0x3e 0x40 $MSG i

IPアドレスをLCDに表示（改良後）†

i2c-lcd-ip.sh

#!/bin/bash
i2cset -y 1 0x3e 0 0x38 0x39 0x14 0x78 0x5e 0x6c i
sleep 0.25
i2cset -y 1 0x3e 0 0x0c 0x01 0x06 i
sleep 0.05

LANG=C
IPMSG="IP Address:"
MSG=`echo -n "$IPMSG" | perl -pe '$_=join" ",map{ord }split//'`
echo $MSG
i2cset -y 1 0x3e 0x40 $MSG i

i2cset -y 1 0x3e 0 0xc1

IP=`ifconfig eth0 | grep "inet" | cut -d ":" -f 2 | cut -d " " -f 1`
MSG=`echo -n "$IP" | perl -pe '$_=join" ",map{ord }split//'`
echo $MSG
i2cset -y 1 0x3e 0x40 $MSG i

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