epaper

Project for displaying stories with Pimoroni GFX HAT and Raspberry Pi Zero

These repository contains

Three cpp classes:
- spi_device: uses /dev/spi*.* to comunicate with the display (so the SPI driver must be enabled - see config.txt on raspberry pi)
- gpio_device: direct access to memory to handle the GPIO pins
- graphic_device: class to handle the GFX HAT display, requires spi_device and gpio_device
- epaper: Old class to handle InkyPhat epaper display, not used anymore
Two files from another repository (https://github.com/mattflow/cbmp):
- cbmp.c: i did not write this.
- cbmp.h: i did not write this.

How to build

Clone the repository and run the build.sh by issuing:

bash build.sh

This will generate:

app_DisplayGrid.o: displays a set of axys on the display to check alignment. Does not require any dependencies.
app_DisplayImage.o: displays the image "prova.bmp" to the display. Must be of the right size, if not an error is generated.
app_GraphicTest.o: displays a moving square on the display
app_TestButtonsLeds.o: uses directly i2c to test buttons and leds