Hi to all
I have a strange problem on a product of the comfile technology a industrial Touch with raspberry 3.
I can not write on the USB pendrive, or rather the file seems to have been written but the pendrive is empty
These are the steps:
First of all I create the virtual path of the pendrive
mkdir /mnt/usb
chmod 777 /mnt/usb
Then in the code ceck if device is inserted
I find in the /dev the file sdx (sdx1 ..) where x = [a .... z].
If the device is present, mount the path with a shell
where hd = sdx1.
The shell returns successfully so the mount is ok.
After writing the file check if the writing is successful with
And in fact the notification tells me that the file is present.
A further test I do with winscp viewing the path /mnt/usb and the file is present.
But if remove the pendrive and inserted this in a pc the file is not present.
Why?
I remember that I always did this way and it worked.
Thanks.
I have a strange problem on a product of the comfile technology a industrial Touch with raspberry 3.
I can not write on the USB pendrive, or rather the file seems to have been written but the pendrive is empty
These are the steps:
First of all I create the virtual path of the pendrive
mkdir /mnt/usb
chmod 777 /mnt/usb
Then in the code ceck if device is inserted
I find in the /dev the file sdx (sdx1 ..) where x = [a .... z].
If the device is present, mount the path with a shell
B4X:
Dim shmount As Shell
shmount.Initialize("shmount", "mount", Array As String("-t", "auto", "/dev/" & hd, "/mnt/usb"))
shmount.Run(-1)The shell returns successfully so the mount is ok.
After writing the file check if the writing is successful with
B4X:
If File.Exists("/mnt/usb/", fname) Then
NotificaShow("", "File " & fname & " salvato correttamente!", "none", 1500)
Else
NotificaShow("", "Errore salvataggio file " & fname, "none", 1500)
End IfA further test I do with winscp viewing the path /mnt/usb and the file is present.
But if remove the pendrive and inserted this in a pc the file is not present.
Why?
I remember that I always did this way and it worked.
Thanks.