Here is a list of all files with brief descriptions:

ADC_ex.c	Simple extension for ADCs
ADC_ex.h	Simple extension for ADCs
CRC_stm32.c	Function dealing with STM32 CRC peripheral
CRC_stm32.h	Function dealing with STM32 CRC peripheral
exceptions.c	Debug tool helpers
exceptions.h	Debug tool and helpers
flash_check.c	Function to check flash CRC
flash_check.h	Function to check flash CRC
GPIO_ex.c	Extensions for GPIOs (R/W)
GPIO_ex.h	Extensions for GPIOs (R/W)
GPIO_in.c	GPIO input handling
GPIO_in.h	GPIO input handling
GPIO_out.c	GPIO output handling
GPIO_out.h	GPIO output handling
handlers_sequencer.c	Simple task sequencer handling
handlers_sequencer.h	Simple task sequencer handling
Logic_ex.c	Extensions for logic variables (R/W)
Logic_ex.h	Extensions for logic variables (R/W)
Logic_in.c	Logic input handling
Logic_in.h	Logic input handling
Logic_out.c	Logic output handling
Logic_out.h	Logic output handling
PWM.c	Straightforward PWM handling
PWM.h	Straightforward PWM handling
PWM_GPIO.c	GPIO PWM emulation handling
PWM_GPIO.h	GPIO PWM emulation handling
PWM_IC.c	PWM Input Capture handling
PWM_IC.h	PWM Input Capture handling
random_utils.c	(A little less pseudo) random numbers generation utilities
random_utils.h	(A little less pseudo) random numbers generation utilities
RTC_ex.c	Basic RTC handling
RTC_ex.h	Basic RTC handling
stack_utils.c	Stack utilities
stack_utils.h	Stack utilities
stdream_rdir.c	Stream redirection
stdream_rdir.h	Stream redirection
tick_utils.c	Core ticks related utilities
tick_utils.h	Core ticks related utilities
TIM_ex.c	Extensions for TIM peripherals
TIM_ex.h	Extensions for TIM peripherals
time_utils.c	Time related utilities
time_utils.h	Time related utilities
UART_term.c	UART terminal
UART_term.h	UART terminal header
USB_CDC_IF_ex.c	Extensions for USB VCP
USB_CDC_IF_ex.h	Extensions for USB VCP
WDG_ex.c	Extensions for WDG peripherals
WDG_ex.h	Extensions for WDG peripherals
workload.c	Workload estimation utilities
workload.h	Workload estimation utilities