fread.ink print screen tool

A tool for printing text and graphics to the eink display. The image data is printed directly to the display's framebuffer.

Installation

1. Download the fips executable from the latest release. It is compiled for the fread.ink firmware.
2. Copy the fips executable to the device, e.g. via USB networking.

Usage

Display an image

./fips -g image_path [-f]

where:

• -g is the parameter for displaying a PNG image
• image_path is the path to the image's file
• -f is an optional parameter for making a full update of the display, the default is partial update

Clear the display

./fips -c

where:

• -c is the parameter for clearing the display

Build

The easiest way to build the tool from sources is to use the toolchain in the fread-vagrant VM.

1. Copy the fips.c source file to the running fread-vagrant VM.
2. SSH to the fread-vagrant VM.
3. Execute sudo apt-get install libpng12-dev to install the include files for libpng. This is required for the tool to compile to its dependent libraries.
4. Copy the libpng12.so.0.50.0 and libz.so.1.2.8 shared libraries to the same folder where fips.c was copied. This is required for the tool to link to its dependent libraries. You can find these libraries in the fread-userland VM or on a device with the fread.ink firmware already installed.
5. Execute the following command:

arm-linux-gnueabihf-gcc -std=gnu99 -I/usr/include -I/usr/include/libpng fips.c -o fips -l:libpng12.so.0.50.0 -l:libz.so.1.2.8

The fips executable will be generated in the same folder. You can now copy it to a device which has the fread.ink firmware installed.