DigiView-SBC
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20 hours ago •
fpvout
fpvout
GPIO Monitor with touchscreen not working
Hi,
I'm trying to make it working on my RPi 4B with a 4" touchscreen monitor connnected with GPIO.
I'm using your .img , I need to install monitor drivers after the first power up to see something in the display but after that I cannot see any Digiview background image on screen , only the prompt of the fpvout user. Maybe something in the drivers broke Digiview ?
My display is a 4" and the drivers I installed are here:
git clone https://github.com/goodtft/LCD-show.git
and I used :
./MHS40-show
after that and one reboot the display started working but I got only a prompt and if I try to start even manually fpvout-start.sh it says:
fpvout@FPVOut:~ $ /home/fpvout/fpvout-start.sh unable to open device, or device not found try running as root (with sudo)
strace:
fpvout@FPVOut:~ $ strace /home/fpvout/fpvout-start.sh
execve("/home/fpvout/fpvout-start.sh", ["/home/fpvout/fpvout-start.sh"], 0xbeef2690 /* 21 vars */) = 0
brk(NULL) = 0x1dc6000
mmap2(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6f30000
access("/etc/ld.so.preload", R_OK) = 0
openat(AT_FDCWD, "/etc/ld.so.preload", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=54, ...}) = 0
mmap2(NULL, 54, PROT_READ|PROT_WRITE, MAP_PRIVATE, 3, 0) = 0xb6f2f000
close(3) = 0
readlink("/proc/self/exe", "/usr/bin/bash", 4096) = 13
openat(AT_FDCWD, "/usr/lib/arm-linux-gnueabihf/libarmmem-v7l.so", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\254\3\0\0004\0\0\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0644, st_size=17708, ...}) = 0
mmap2(NULL, 81964, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6eed000
mprotect(0xb6ef1000, 61440, PROT_NONE) = 0
mmap2(0xb6f00000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0xb6f00000
close(3) = 0
munmap(0xb6f2f000, 54) = 0
openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=65760, ...}) = 0
mmap2(NULL, 65760, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb6edc000
close(3) = 0
openat(AT_FDCWD, "/lib/arm-linux-gnueabihf/libtinfo.so.6", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0pn\0\0004\0\0\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0644, st_size=133216, ...}) = 0
mmap2(NULL, 198300, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6eab000
mprotect(0xb6ec9000, 65536, PROT_NONE) = 0
mmap2(0xb6ed9000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1e000) = 0xb6ed9000
close(3) = 0
openat(AT_FDCWD, "/lib/arm-linux-gnueabihf/libdl.so.2", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0 \n\0\0004\0\0\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0644, st_size=9768, ...}) = 0
mmap2(NULL, 73924, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6e98000
mprotect(0xb6e9a000, 61440, PROT_NONE) = 0
mmap2(0xb6ea9000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1000) = 0xb6ea9000
close(3) = 0
openat(AT_FDCWD, "/lib/arm-linux-gnueabihf/libc.so.6", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\274x\1\0004\0\0\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1296004, ...}) = 0
mmap2(NULL, 1364764, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6d4a000
mprotect(0xb6e82000, 65536, PROT_NONE) = 0
mmap2(0xb6e92000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x138000) = 0xb6e92000
mmap2(0xb6e95000, 8988, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb6e95000
close(3) = 0
mmap2(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6f2e000
set_tls(0xb6f2e500) = 0
mprotect(0xb6e92000, 8192, PROT_READ) = 0
mprotect(0xb6ea9000, 4096, PROT_READ) = 0
mprotect(0xb6ed9000, 8192, PROT_READ) = 0
mprotect(0xb6f00000, 4096, PROT_READ) = 0
mprotect(0xfc000, 4096, PROT_READ) = 0
mprotect(0xb6f32000, 4096, PROT_READ) = 0
munmap(0xb6edc000, 65760) = 0
openat(AT_FDCWD, "/dev/tty", O_RDWR|O_NONBLOCK|O_LARGEFILE) = 3
close(3) = 0
brk(NULL) = 0x1dc6000
brk(0x1de7000) = 0x1de7000
openat(AT_FDCWD, "/usr/lib/locale/locale-archive", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=3031632, ...}) = 0
mmap2(NULL, 2097152, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb6b4a000
mmap2(NULL, 2596864, PROT_READ, MAP_PRIVATE, 3, 0x6b000) = 0xb68d0000
close(3) = 0
openat(AT_FDCWD, "/usr/lib/arm-linux-gnueabihf/gconv/gconv-modules.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=26406, ...}) = 0
mmap2(NULL, 26406, PROT_READ, MAP_SHARED, 3, 0) = 0xb6f27000
close(3) = 0
getuid32() = 1001
getgid32() = 1001
geteuid32() = 1001
getegid32() = 1001
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
gettimeofday({tv_sec=1633702995, tv_usec=759028}, NULL) = 0
ioctl(-1, TIOCGPGRP, 0xbeeb93f0) = -1 EBADF (Bad file descriptor)
sysinfo({uptime=676, loads=[60576, 52864, 30368], totalram=4025724928, freeram=3710840832, sharedram=8851456, bufferram=26619904, totalswap=104853504, freeswap=104853504, procs=141, totalhigh=3342860288, freehigh=3103133696, mem_unit=1}) = 0
rt_sigaction(SIGCHLD, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0xb6d77110}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0xb6d77110}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0xb6d77110}, 8) = 0
rt_sigaction(SIGINT, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d77110}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGINT, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d77110}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d77110}, 8) = 0
rt_sigaction(SIGQUIT, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d77110}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGQUIT, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d77110}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d77110}, 8) = 0
rt_sigaction(SIGTSTP, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d77110}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGTSTP, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d77110}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d77110}, 8) = 0
rt_sigaction(SIGTTIN, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d77110}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGTTIN, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d77110}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d77110}, 8) = 0
rt_sigaction(SIGTTOU, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d77110}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGTTOU, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d77110}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d77110}, 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
rt_sigaction(SIGQUIT, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d77110}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d77110}, 8) = 0
uname({sysname="Linux", nodename="FPVOut", ...}) = 0
stat64("/home/fpvout", {st_mode=S_IFDIR|0775, st_size=4096, ...}) = 0
stat64(".", {st_mode=S_IFDIR|0775, st_size=4096, ...}) = 0
stat64("/home", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("/home/fpvout", {st_mode=S_IFDIR|0775, st_size=4096, ...}) = 0
getpid() = 1415
getppid() = 1412
gettimeofday({tv_sec=1633702995, tv_usec=768833}, NULL) = 0
getpid() = 1415
getpgrp() = 1412
ioctl(2, TIOCGPGRP, [1412]) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x55a6c, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0xb6d77110}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0xb6d77110}, 8) = 0
ugetrlimit(RLIMIT_NPROC, {rlim_cur=30185, rlim_max=30185}) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
openat(AT_FDCWD, "/home/fpvout/fpvout-start.sh", O_RDONLY|O_LARGEFILE) = 3
stat64("/home/fpvout/fpvout-start.sh", {st_mode=S_IFREG|0775, st_size=126, ...}) = 0
ioctl(3, TCGETS, 0xbeeb9390) = -1 ENOTTY (Inappropriate ioctl for device)
_llseek(3, 0, [0], SEEK_CUR) = 0
read(3, "#!/bin/bash \n\nexport DISPLAY=:0;"..., 80) = 80
_llseek(3, 0, [0], SEEK_SET) = 0
ugetrlimit(RLIMIT_NOFILE, {rlim_cur=1024, rlim_max=1024*1024}) = 0
fcntl64(255, F_GETFD) = -1 EBADF (Bad file descriptor)
dup2(3, 255) = 255
close(3) = 0
fcntl64(255, F_SETFD, FD_CLOEXEC) = 0
fcntl64(255, F_GETFL) = 0x20000 (flags O_RDONLY|O_LARGEFILE)
fstat64(255, {st_mode=S_IFREG|0775, st_size=126, ...}) = 0
_llseek(255, 0, [0], SEEK_CUR) = 0
read(255, "#!/bin/bash \n\nexport DISPLAY=:0;"..., 126) = 126
stat64("/home", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("/home/fpvout", {st_mode=S_IFDIR|0775, st_size=4096, ...}) = 0
stat64("/home/fpvout/fpv-c", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
chdir("/home/fpvout/fpv-c") = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
pipe([3, 4]) = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [CHLD], 8) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xb6f2e0a8) = 1416
rt_sigprocmask(SIG_SETMASK, [CHLD], NULL, 8) = 0
close(4) = 0
close(4) = -1 EBADF (Bad file descriptor)
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [CHLD], 8) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xb6f2e0a8) = 1417
rt_sigprocmask(SIG_SETMASK, [CHLD], NULL, 8) = 0
close(3) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD], 8) = 0
rt_sigprocmask(SIG_SETMASK, [CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD], 8) = 0
rt_sigaction(SIGINT, {sa_handler=0x526b4, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d77110}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d77110}, 8) = 0
wait4(-1, unable to open device, or device not found
try running as root (with sudo)
[{WIFEXITED(s) && WEXITSTATUS(s) == 1}], 0, NULL) = 1416
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 1417
rt_sigaction(SIGINT, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d77110}, {sa_handler=0x526b4, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d77110}, 8) = 0
ioctl(2, TIOCGWINSZ, {ws_row=30, ws_col=191, ws_xpixel=2101, ws_ypixel=690}) = 0
ioctl(1, TCGETS, {B9600 opost isig icanon echo ...}) = 0
stat64("/home/fpvout/.terminfo", 0x1dcfa90) = -1 ENOENT (No such file or directory)
stat64("/etc/terminfo", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("/lib/terminfo", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat64("/usr/share/terminfo", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
gettimeofday({tv_sec=1633703015, tv_usec=821832}, NULL) = 0
access("/etc/terminfo/x/xterm", R_OK) = -1 ENOENT (No such file or directory)
access("/lib/terminfo/x/xterm", R_OK) = 0
openat(AT_FDCWD, "/lib/terminfo/x/xterm", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=3435, ...}) = 0
read(3, "\32\1)\0&\0\17\0\235\1\244\5xterm|xterm-debian|X"..., 32768) = 3435
read(3, "", 28672) = 0
close(3) = 0
gettimeofday({tv_sec=1633703015, tv_usec=824613}, NULL) = 0
ioctl(1, TCGETS, {B9600 opost isig icanon echo ...}) = 0
ioctl(1, TCGETS, {B9600 opost isig icanon echo ...}) = 0
ioctl(1, TCGETS, {B9600 opost isig icanon echo ...}) = 0
ioctl(1, TCGETS, {B9600 opost isig icanon echo ...}) = 0
ioctl(1, TIOCGWINSZ, {ws_row=30, ws_col=191, ws_xpixel=2101, ws_ypixel=690}) = 0
ioctl(0, TIOCGWINSZ, {ws_row=30, ws_col=191, ws_xpixel=2101, ws_ypixel=690}) = 0
rt_sigprocmask(SIG_SETMASK, [CHLD], NULL, 8) = 0
close(3) = -1 EBADF (Bad file descriptor)
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1416, si_uid=1001, si_status=1, si_utime=0, si_stime=1} ---
wait4(-1, 0xbeeb8dec, WNOHANG, NULL) = -1 ECHILD (No child processes)
sigreturn({mask=[]}) = 0
read(255, "", 126) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
exit_group(0) = ?
+++ exited with 0 +++
And this is what GitHub display installation script MHS40-show is doing :
#!/bin/bash
sudo ./system_backup.sh
if [ -f /etc/X11/xorg.conf.d/40-libinput.conf ]; then
sudo rm -rf /etc/X11/xorg.conf.d/40-libinput.conf
fi
if [ ! -d /etc/X11/xorg.conf.d ]; then
sudo mkdir -p /etc/X11/xorg.conf.d
fi
sudo cp ./usr/mhs395-overlay.dtb /boot/overlays/
sudo cp ./usr/mhs395-overlay.dtb /boot/overlays/mhs395.dtbo
root_dev=`grep -oPr "root=[^\s]*" /boot/cmdline.txt | awk -F= '{printf $NF}'`
if test "$root_dev" = "/dev/mmcblk0p7";then
sudo cp -rf ./boot/config-noobs-nomal.txt ./boot/config.txt.bak
else
sudo cp -rf ./boot/config-nomal.txt ./boot/config.txt.bak
sudo echo "hdmi_force_hotplug=1" >> ./boot/config.txt.bak
fi
sudo echo "dtparam=i2c_arm=on" >> ./boot/config.txt.bak
sudo echo "dtparam=spi=on" >> ./boot/config.txt.bak
sudo echo "enable_uart=1" >> ./boot/config.txt.bak
sudo echo "dtoverlay=mhs395:rotate=90" >> ./boot/config.txt.bak
sudo echo "hdmi_group=2" >> ./boot/config.txt.bak
sudo echo "hdmi_mode=1" >> ./boot/config.txt.bak
sudo echo "hdmi_mode=87" >> ./boot/config.txt.bak
sudo echo "hdmi_cvt 480 320 60 6 0 0 0" >> ./boot/config.txt.bak
sudo echo "hdmi_drive=2" >> ./boot/config.txt.bak
sudo cp -rf ./boot/config.txt.bak /boot/config.txt
sudo cp -rf ./usr/99-calibration.conf-mhs395-90 /etc/X11/xorg.conf.d/99-calibration.conf
sudo cp -rf ./usr/99-fbturbo.conf /usr/share/X11/xorg.conf.d/99-fbturbo.conf
#if test "$root_dev" = "/dev/mmcblk0p7";then
#sudo cp ./usr/cmdline.txt-noobs /boot/cmdline.txt
#else
#sudo cp ./usr/cmdline.txt /boot/
#fi
sudo cp ./usr/inittab /etc/
#sudo cp ./boot/config-mhs395.txt /boot/config.txt
sudo touch ./.have_installed
echo "gpio:resistance:mhs395:90:480:320" > ./.have_installed
#FBCP install
wget --spider -q -o /dev/null --tries=1 -T 10 https://github.com
if [ $? -eq 0 ]; then
sudo apt-get install git cmake -y 2> error_output.txt
result=`cat ./error_output.txt`
echo -e "\033[31m$result\033[0m"
grep -q "^E:" ./error_output.txt && exit
sudo rm -rf rpi-fbcp
sudo git clone https://github.com/tasanakorn/rpi-fbcp
sudo mkdir ./rpi-fbcp/build
cd ./rpi-fbcp/build/
sudo cmake ..
sudo make
sudo install fbcp /usr/local/bin/fbcp
cd - > /dev/null
type fbcp > /dev/null 2>&1
if [ $? -eq 0 ]; then
sudo cp -rf ./usr/99-fbturbo-fbcp.conf /usr/share/X11/xorg.conf.d/99-fbturbo.conf
sudo cp -rf ./etc/rc.local /etc/rc.local
fi
fi
#evdev install
#nodeplatform=`uname -n`
#kernel=`uname -r`
version=`uname -v`
#if test "$nodeplatform" = "raspberrypi";then
#echo "this is raspberrypi kernel"
version=${version##* }
#version=${version#*#}
echo $version
if test $version -lt 2017;then
echo "reboot"
else
echo "need to update touch configuration"
sudo dpkg -i -B ./xserver-xorg-input-evdev_1%3a2.10.6-1+b1_armhf.deb 2> error_output.txt
#sudo apt-get install xserver-xorg-input-evdev 2> error_output.txt
result=`cat ./error_output.txt`
echo -e "\033[31m$result\033[0m"
grep -q "error:" ./error_output.txt && exit
sudo cp -rf /usr/share/X11/xorg.conf.d/10-evdev.conf /usr/share/X11/xorg.conf.d/45-evdev.conf
#echo "reboot"
fi
#else
#echo "this is not raspberrypi kernel, no need to update touch configure, reboot"
#fi
sudo sync
sudo sync
sleep 1
if [ $# -eq 1 ]; then
sudo ./rotate.sh $1
elif [ $# -gt 1 ]; then
echo "Too many parameters"
fi
echo "reboot now"
sudo reboot
