Thanks for the advice.

This seems to be an ongoing issue with the filesystem, so I'll keep looking for work-arounds.

For your information: I can get the device back into a usable state by using MOGD# to wipe the filesystem, then uploading a font or a bitmap, again using MOGD#.

Then, I have ...

I was wrong about MOGD# - when the display is in this state, MOGD# cannot upload to it either.

So far the display has failed to recover and is presently unusable. I am going to switch it off and go home for the weekend. Perhaps it will be Ok on Monday...

This post may be related to my other post today - in that I get either one of the problems.

After a few hours of normal operation, my GLK19264-7T-1U (USB) stops accepting bitmap uploads properly. It gets part-way through a 1538 byte bitmap upload and then returns a bad echo byte, at which point my ...

After a few hours of normal operation, my GLK19264-7T-1U (USB) stops responding correctly to the "Get Filesystem Directory" command. Instead of returning the entry list, it just responds with a single byte with the value "0xFE".

No matter what I do I cannot correct this. After a few hours ...

Thanks for confirming that.

I have a further question...

I have implemented the upload protocol correctly now but I was still not seeing the echo after sending the bitmap width. I discovered that if I removed my "WipeFileSystem" command send, which was done just before the upload, it all started ...

Troy, thanks for the immediate response. This is the kind of technical support we like!

I downloaded the excellent Portmon and captured a bitmap upload to the display using MOGD#. All appears as expected EXCEPT for some extra stuff after MOGD# receives the CONFIRM(0x01) following transmission of ...

I am trying to upload a bitmap file to my GLK19264-7T-1U (USB) following the instructions in your Technical Manual version 1.1.

The code gets as far as starting the data upload - it has received confirmation (0x01) from the unit to say the file will fit. After the first byte I wait for the echo ...