Here is an example application that draws directly into eInk frame buffer.
Both the source and built application are attached.
It is basically port of this
"Send to Framebuffer" application to EE
before using the installed application issue the following command to allow access to eInk:
adb shell su -c chmod 666 /dev/graphics/fb2
Once installed, long press in file browser on image file, select "Send" from menu, select "Send to eDGe eInk", the image will be displayed there.
The source code shall be sufficient to get anyone started. In particular EdgeFB class can be directly reused. Or it can just serve as an example.
Anyone want to take a shot on adding eInk support to fbreader
?