Quick Start Guide for the mono font service

This is the quick start guide for the GFX Mono Font Library with step-by-step instructions on how to configure and use it for a specific use case.

Basic usage of the graphics service

This use case will demonstrate initializing the mono graphics service and then draw a "Hello world!" sting on the display.

Dependencies

In order to use this quick start, the following dependencies are needed:

• asfdoc_samd20_system_group
• GFX Mono Font Library
• conf_sysfont.h Containing the actual font.

Usage steps

Example code

Add to, e.g., the main function in the application C-file:

system_init();

gfx_mono_init();

gfx_mono_draw_string("Hello world!",0, 0, &sysfont);

while (1) {

}

Workflow

1. Initialize system:

   • system_init(); 

2. Initialize monochrome graphics service

   • gfx_mono_init(); 

   • Note

     This will call the init function for the low level display controller driver and intialize the screen to a cleared background.

3. Draw a string on the screen starting at pixel (0,0)

• gfx_mono_draw_string("Hello world!",0, 0, &sysfont); 

• Note

  This uses conf_sysfont.h where sysfont is defines to give the font to be used on the screen.