| button.c | Button initialization and management |
| buzzer.c | Buzzer dedicated functions with RTTTL format support |
| circle_api.h | General header for the STM32-circle projects |
| draw.c | Various utilities for drawings (characters, ..) |
| lcd.c | The LCD driver for the ST7637 |
| led.c | LED management |
| mems.c | Mems Initialization and management |
| menu.c | General management for menu, dialog boxes .. |
| menu_app.c | General functions to handle the 'Application menu' |
| menu_settings.c | Management of a menu that allows to set up the STM32-primer |
| pointer.c | Various utilities for the pointer management for STM32-primer |
| rtc.c | RTC clock management and utilities |
| Util.c | Various utilities for STM32 CircleOS |