#!/bin/sh

#

# This script prepares avrdude for raspduino.

#

# This script is copyright 2012 (C) BitWizard B.V.

# You're granted the right to use this script with your

# raspduino that you buy from BitWizard B.V. You have the

# right to look at this copyright message at the top and

# then decide that you're not allowed to run or copy it.

# All other rights reserved.

#

myid=`id -u`

if [ $myid -ne 0 ] ; then

echo "You need to run this script as root. e.g. sudo $0"

exit 1

fi

echo "---------- checking required packages ---------"

need_update=true

required_programs="avrdude arduino"

for i in $required_programs ; do

if [ ! -f /usr/bin/$i ] ; then

# $i is not installed, lets install it.

echo "----- Installing $i -----"

if [ -z `which apt-get` ] ; then

# Lets hope this works! (on arch).

pacman -S --noconfirm $i

else

if $need_update ; then

apt-get update

need_update=false

fi

apt-get -y install $i

fi

else

echo "OK: You already have $i installed "

fi

done

echo "----------- checking/updating avrdude -----------"

avrdudefile=`file /usr/bin/avrdude`

case "$avrdudefile" in

*"ELF 32-bit LSB executable, ARM"*)

#

echo "Replacing avrdude with script to reset raspduino"

if [ ! -f /usr/bin/avrdude.bin ] ; then

mv /usr/bin/avrdude /usr/bin/avrdude.bin

else

echo "Avrdude.bin already exists. Cannot continue."

exit 1

fi

cat << EOF > /usr/bin/avrdude

#!/bin/sh

# This script replaces avrdude and resets the raspduino

# in case you don't have the software DTR patch.

[ -f /etc/have_software_DTR ] || sudo reset_raspduino

avrdude.bin "\$@"

EOF

chmod 755 /usr/bin/avrdude

;;

*"POSIX shell script"*)

echo "OK: It seems this script has already been run. No changes. Done!"

;;

*)

echo "Your avrdude is weird. Not an arm executeable but neither a shell script. "

echo "cannot continue."

exit 1

;;

esac

echo ---------- checking reset_raspduino ----------------

file=/usr/bin/reset_raspduino

if [ ! -f $file ] ; then

echo "Creating reset_raspduino"

cat << EOF > $file

#!/bin/sh

gpio_num=18

echo \$gpio_num > /sys/class/gpio/export

echo out > /sys/class/gpio/gpio\$gpio_num/direction

echo 1 > /sys/class/gpio/gpio\$gpio_num/value

sleep 0.05

echo 0 > /sys/class/gpio/gpio\$gpio_num/value

echo \$gpio_num > /sys/class/gpio/unexport

EOF

chmod 755 $file

else

echo "OK: you allready have a reset_raspduino. "

fi

echo ------------- checking raspduino.rules -----------------

file=/etc/udev/rules.d/80-raspduino.rules

if [ ! -f $file ] ; then

echo "creating 80 raspduino rules (link ttyAMA to ttyS0)."

echo 'KERNEL=="ttyAMA0", SYMLINK+="ttyS0",GROUP="dialout",MODE:=0666' \

> $file

else

echo "OK: You already have a raspduino.rules."

fi

echo ------------- checking inittab -----------------

file=/etc/inittab

if grep -q ttyAMA0 $file ; then

# ttyAMA0 is present in inittab...

if grep -q ^[^#].*ttyAMA0 $file ; then

# ... and not commented out. Lets do that.

echo "removing getty entry for ttyAMA0 from /etc/inittab"

cp -p $file "$file".orig

sed -e 's/\(.*\)ttyAMA0/#\1ttyAMA0/' "$file".orig > $file

else

echo "OK: You already have ttyAMA commented out. Good."

fi

else

# No ttyAMA in inittab

echo "OK: You have no ttyAMA in your inittab. That's weird for a Raspberry pi system."

# Lets assume that's ok.

fi

echo ------------- checking upstart -----------------

file=/etc/init/ttyAMA0.conf

if [ -f $file ] ; then

if ! grep -q manual $file ; then

echo "Disable autostart of ttyAMA getty."

# the .orig extension causes the file to be ignored by upstart.

cp $file $file.orig

echo manual >> $file

else

echo "OK: Your ttyAMA upstart config is already disabled. Good."

fi

else

echo "OK: You seem to not have ttyAMA0 upstart config. Fine."

fi

echo ------------- checking cmdline.txt -----------------

if grep -q ttyAMA0 /boot/cmdline.txt ; then

echo "removing ttyAMA0 as console from cmdline."

mv /boot/cmdline.txt /boot/cmdline.txt.orig

# remove ttyAMA references from cmdline.txt. Usually console= and kgdboc= .

sed -e 's/[^ ]*ttyAMA0[^ ]*//g' /boot/cmdline.txt.orig > /boot/cmdline.txt

else

echo "OK: Your ttyAMA was already removed from cmdline.txt"

fi

echo ------------- checking boards.txt -----------------

file=/usr/share/arduino/hardware/arduino/boards.txt

if ! grep -q raspduino $file ; then

echo "... adding raspduino to arduino hardware list. "

cp $file $file.orig

cat <<EOF >> $file

##############################################################

raspduino.name=Raspduino

raspduino.upload.protocol=arduino

raspduino.upload.maximum_size=30720

raspduino.upload.speed=57600

raspduino.bootloader.low_fuses=0xff

raspduino.bootloader.high_fuses=0xda

raspduino.bootloader.extended_fuses=0x05

raspduino.bootloader.path=atmega

raspduino.bootloader.file=ATmegaBOOT_328_diecimila.hex

raspduino.bootloader.unlock_bits=0x3F

raspduino.bootloader.lock_bits=0x0F

raspduino.build.mcu=atmega328p

raspduino.build.f_cpu=16000000L

raspduino.build.core=arduino

raspduino.build.variant=standard

EOF

else

echo "OK: your boards.txt already has raspduino"

fi