libopencm3
A free/libre/open-source firmware library for various ARM Cortex-M3 microcontrollers.
STM32F0
Here is a list of all modules:
[detail level 1234]
 User interrupt service routines (ISR) prototypes for STM32 F0 series
 STM32F0xxLibraries for ST Microelectronics STM32F0xx series
 ADClibopencm3 STM32F0xx Analog to Digital Converters
 COMPlibopencm3 STM32F0xx COMP
 CRClibopencm3 STM32F0xx CRC
 DAClibopencm3 STM32F0xx DAC
 DMAlibopencm3 STM32F0xx DMA
 FLASHlibopencm3 STM32F05x FLASH
 GPIOlibopencm3 STM32F0xx General Purpose I/O
 IWDGlibopencm3 STM32F0xx Independent Watchdog Timer
 PWRlibopencm3 STM32F0xx Power Control
 RCClibopencm3 STM32F0xx Reset and Clock Control
 RTClibopencm3 STM32F0xx RTC
 Timerslibopencm3 STM32F0xx Timers
 USARTlibopencm3 STM32F0xx USART
 STM32F0xx DefinesDefined Constants and Types for the STM32F0xx series
 SYSCFG DefinesDefined Constants and Types for the STM32F0xx System Config
 CEC DefinesDefined Constants and Types for the STM32F0xx HDMI-CEC
 RTC DefinesDefined Constants and Types for the STM32F0xx RTC
 CRC Defineslibopencm3 Defined Constants and Types for the STM32F1xx CRC Generator
 DMA DefinesDefined Constants and Types for the STM32F0xx DMA Controller
 SPI DefinesDefined Constants and Types for the STM32F0xx SPI
 RCC DefinesDefined Constants and Types for the STM32F0xx Reset and Clock Control
 USART DefinesDefined Constants and Types for the STM32F0xx USART
 PWR DefinesDefined Constants and Types for the STM32F0xx PWR Control
 FLASH DefinesDefined Constants and Types for the STM32F0xx Flash memory
 COMP Defineslibopencm3 Defined Constants and Types for the STM32F0xx Comparator module
 IWDG DefinesDefined Constants and Types for the STM32F0xx Independent Watchdog Timer
 EXTI DefinesDefined Constants and Types for the STM32F0xx External Interrupts
 DAC DefinesDefined Constants and Types for the STM32F0xx Digital to Analog Converter
 ADC DefinesDefined Constants and Types for the STM32F0xx Analog to Digital Converter
 Timers DefinesDefined Constants and Types for the STM32F0xx Timers
 I2C DefinesDefined Constants and Types for the STM32F0xx I2C
 GPIO DefinesDefined Constants and Types for the STM32F0xx General Purpose I/O
 TSC DefinesDefined Constants and Types for the STM32F0xx Touch Sensor
 DebuggingMacros and functions to aid in debugging
 NVIC Defineslibopencm3 Cortex Nested Vectored Interrupt Controller
 User interrupts for STM32 F0 series
 Cortex M0/M3/M4 System InterruptsIRQ numbers -3 and -6 to -9 are reserved
 SysTick Defineslibopencm3 Defined Constants and Types for the Cortex SysTick
 Clock source selection
 CAN defineslibopencm3 Defined Constants and Types for STM32 CAN
 CAN register base address
 CRS DefinesSTM32 Clock Recovery System: Defined Constants and Types
 USB DefinesDefined Constants and Types for the STM32F* USB drivers
 U(S)ART convenience FlagsWe define the "common" lower flag bits using a standard name, allowing them to be used regardless of which usart peripheral version you have
 USB DriversDefined Constants and Types for the USB Drivers
 USB Standard Structure DefinitionsDefined Constants and Types for the USB Standard Structure Definitions
 CANlibopencm3 STM32Fxxx CAN
 User interrupt service routines (ISR) defaults for STM32 F0 series
 NVIClibopencm3 Cortex Nested Vectored Interrupt Controller
 SysTicklibopencm3 Cortex System Tick Timer
 CRSlibopencm3 STM32 Clock Recovery Subsystem
 Generic USB DriversGeneric USB Drivers
 Generic USB Control RequestsGeneric USB Control Requests
 Generic USB Standard Request InterfaceGeneric USB Standard Request Interface
 I2c_file
 Spi_file