I don't have the original BMP for that one - I was using the SplashScreen-Duet3d-800x480.bin file from the 121.3 Source Code .zip files on GitHub.

Here's all the files for my own Splash Screen though:

SplashScreen bitmap http://www.filedropper.com/splashscreen-douglas
Splashscreen bin file http://www.filedropper.com/splashscreen-douglas_1
PanelDueFirmware bin file http://www.filedropper.com/paneldue-v2-7
Combined Firmware bin file http://www.filedropper.com/panelduefirmware_1

I've tried the Duet3d and Escher3D Splash Screen .bin files from the directory and had the same results:

In all cases the Splash Screen picture gets garbled in a similar way, but once the splash screen disappears, the rest of the PanelDue displays and operate correctly. So it seems to be an issue either when Windows joins the two bin files, or something with the hardware when it uploads.

The combined .bin file with the Duet3d Splashscreen:
http://www.filedropper.com/panelduefirmware

I'm having problems with a custom splash screen getting garbled.

I have a version 2 PanelDue with an ATSAM3S4B chip, and a 7 inch display with an SSD1963QL9 controller.

I have created a simple 800x480 24-bit bmp and compressed it with bmp2c-escher3d.

I then combined it with the 1.21.3 release of PanelDue-v2-7.0 using the following command line:
copy /b PanelDue-v2-7.0.bin+image.bin PanelDueFirmware.bin

and then uploaded the file using bossac, thru the command line:
bossac.exe –-port=COM3 -e -w -v -b PanelDueFirmware.bin

The file uploads correctly, and everything else works perfectly, but the splash screen always ends up garbled. The top half of the image gets split in half and the left and right halves gets swapped around. There is then a gap of about 50 lines before the bottom half of the image is displayed (normally correctly positioned and orientated).

I have tried numerous different bmp's with different colours and text but they're always garbled in exactly the same way - the bottom half of the image is correct, but the top half gets cut up and swapped around. Each bmp is pretty basic and between 20kb to 40kb when compressed so there is still plenty of memory left when the file is uploaded (the combined bin file only being 132 to 150 kb).

I have also tried it with earlier firmware releases but get the same results.

Any ideas or assistance would be greatly appreciated.