The font header font.h defines parameters to setup the size of a character/number or symbol, if only uppercase letters should be used and where font data should be stored.
Width/Height of the FONT
The FONT_WIDTH and FONT_HEIGHT macro defines the width and the height of the font. The installed font has a size of (w=5*h=7). The font itself should not exceed 8 in height to prevent using more than one page!
#define FONT_WIDTH 5
#define FONT_HEIGHT 7
Characters in bold (8x8)
Within the OLED Graphics Designer (OLGD) it is possible to create own characters in different sizes. Just start a new design with 8x8 and design your own character.
It is important that all characters, numbers and symbols have the same size!
Ignore lowercase letters
To save memory or if lower case letters are not needed they can be disabled with the ´FONT_IGNORE_LOWER_CASE` macro (not enabled by default). Every lower case letter is automatically converted to an upper case letter.
To do this, simply remove the comment before the macro.
#define FONT_IGNORE_LOWER_CASE
Store font in EEPROM
It is possible to move the font data from programm memory to eeprom. This can be done with the FONT_STORE_IN_EEPROM macro (not enabled by default).
To do this, simply remove the comment before the macro.
#define FONT_STORE_IN_EEPROM
There should be
470 bytesleft in EEPROM for all characters.
For a more detailed view of the possible parameters that can be set in font.h, take a look at the OLED Doxygen documentation (OLDD).