Thanks for the quick response.

I am getting acks all the way now but I started with 1 and increment up.
U sure it is 128 and incr down as that is not the normal xmodem protocol.

I do a directory listing and the font file size is correct but the data is corrupted.

I can post a serial trace later ...

Agree. Thanks.

Currently I am using the simple protocol for uploading fonts to the device. That works fine.

I decided to start using XModem to upload Fonts to the device and have run into some problems.

First, I am actively using XModem for file transfers to other devices.
I am using the some same routines to ...

FYI
Does not appear to work with v8.3.
The commands are out of date (byte vs word) issues.

Ok, thanks.

Let me know what you find out.

I hit that documentation snag as well. Took awhile to figure out, I eventually looked at another doc for a different LCD than the one I am using and it was correct.

That would be great.

Some other ideas.

If you can provide a command to check directory integrity - could you also provide a command to "Report" what slots are corrupted and possibly a command to repair.

It would be very useful to know which slots are corrupted. We use some slots for permanent and ...

Thanks for the info.

Is there any possibility of adding a command to check the filesystem for corruption? Or some other way to determine if the file system is ok?

We are using the above referenced LCD in an embedded system with a serial port and have run into a problem where the LCD will go into an unrecoverable state.

We are using the LCD in a battery operated embedded system and eventually if the batteries become low and if we attempt to write an image or ...