The STM32F10x Firmware Library is complete package, consisting of device drivers for all of the standard device peripherals, for the Low-¹, Medium-² and High-density³ STM32F101xx and STM32F103xx advanced ARM-based 32-bit MCUs.

This library is a firmware package which contains a collection of routines, data structures and macros covering the features of all peripherals. It includes a description of the device drivers plus a set of examples for each peripheral. Each device driver includes a set of functions covering full peripheral functionalities. The source code, developed in C language, is highly documented and thoroughly tested. 

The development of each driver is driven by a common API (application programming interface) which standardizes the driver structure, the functions and the names of parameters. The driver source code is developed in ‘Strict ANSI-C’ (relaxed ANSI-C for projects and examples files). It is fully documented and is MISRA-C 2004 compliant (the compliancy matrix is available upon request). Writing the whole library in ‘Strict ANSI-C’ makes it independent from the software toolchain. Only the start-up files depend on the toolchain. The firmware library implements run-time failure detection by checking the input values for all library functions. This dynamic checking contributes to enhance the robustness of the software. Run-time detection is suitable for user application development and debugging. It adds an overhead and can be removed from the final application code to minimize code size and execution speed. Since the firmware library is generic and covers all peripherals functionalities, the size and/or execution speed of the application code may not be optimized. For many applications, the library may be used as is. However, for applications having tough constraints in terms of code size and/or execution speed, the library drivers should be used as a reference on how to configure the peripheral and tailor them to specific application requirements.

The firmware library allows any device to be used in the user application without the need for in-depth study of each peripheral specifications. As a result, using the firmware library saves significant time that would otherwise be spent in coding, while reducing the application development and integration cost.

For more details about this Firmware Library, please refer to the User manual "UM0427 ARM®-based 32-bit MCU STM32F101xx and STM32F103xx Firmware Library" available for download from the ST microcontrollers website: www.st.com/stm32

Peripheral Examples
The Firmware library provide a rich set of examples covering the main features of each peripheral. All the examples are independent from the software toolchain. These examples run on STMicroelectronics STM3210B-EVAL and STM3210E-EVAL evaluation boards and can be easily tailored to any other hardware. Only source files are provided for each example and user can tailor the provided project template to run the selected example with his prefferred tool chain; more details...

The package contains the following examples:

ADC 3ADCs_DMA Use 3ADCs in independant continuous conversion mode with ADC1 and ADC3 using DMA transfer from ADC1 and ADC3 to data buffers. ADC1_DMA Use the ADC and DMA to transfer continuously converted data from ADC to a data buffer. AnalogWatchdog Use the ADC analog watchdog to guard continuously an ADC channel. ExtLinesTrigger Trigger ADC regular and injected groups channel conversion using two external line event. RegSimul_DualMode Use ADC1 and ADC2 in regular simultaneous dual mode ExTIMTrigger_AutoInjection Convert ADC regular group channels continuously using TIM1 external trigger and injected group channels using the auto-injected feature.  BKP Backup_Data Store user data in the Backup data registers.   Tamper Write/read data to/from Backup data registers and demonstrates the Tamper detection feature.          CAN Example Set a communication with the bxCAN in loopback mode.          CortexM3 BitBand Use CortexM3 Bit-Band access to perform atomic read-modify-write and read operations on a variable in SRAM. Mode_Privilege Modify CortexM3 Thread mode privilege access and stack.          CRC Example Use the CRC calculation unit to get a CRC code of a given buffer of data word(32-bit).          DAC DualModeDMA_SineWave  Use DAC channels in dual mode with DMA to generate the same sine wave signal in 12bit right data alignment mode. OneChannel_NoiseWave Use DAC channel1 to generate a fixed signal with noise wave in 12bit left data alignment mode. OneChannelDMA_Escalator Use DAC channel1 with DMA to generate an escalator signal in 8bit right alignment mode TwoChannels_TriangleWave Use DAC channels separately to generate two signals with different triangle waves in 12bit right data alignment mode.  DMA ADC_TIM1 Use a DMA channel to transfer continuously a data from a peripheral (ADC) to another (TIM1) supporting DMA transfer. FLASH_RAM Use a DMA channel to transfer a word data buffer from memory (Flash) to memory (RAM). FSMC Use two DMA1 channels to transfer a word data buffer from embedded FLASH to external memory through FSMC and from this external memory to embedded RAM. I2C_RAM Use two DMA channels to transfer a data buffer from memory to I2C2 through I2C1. SPI_RAM Use four DMA channels to transfer a data buffer from memory to SPI2 through SPI1 and a second data buffer from memory to SPI1 through SPI2 in full-duplex mode.  EXTI Example Configure an external interrupt line.  FLASH Program Program the STM32F10x FLASH. Write_Protection Enable and disable the write protection for the STM32F10x FLASH.  FSMC NAND Use the FSMC firmware library and an associate driver to communicate with a 8-Bit NAND memory: NAND512W3A2. Write into all memory, Read and verify the contents. NOR Use the FSMC firmware library and an associate driver to communicate with a 16-Bit NOR memory: M29W128FL, M29W128GL or S29GL128P. Write into all memory, Read and verify the contents . NOR_CodeExecute Build an application to be loaded into the NOR memory mounted on STM3210E-EVAL board then execute it from internal Flash. SRAM Use the FSMC firmware library and an associate driver to communicate with a 16-Bit SRAM memory: IS61WV51216BLL. Write into all memory, Read and verify the contents. SRAM_DataMemory Use the external SRAM mounted on STM3210E-EVAL board as program data memory and internal SRAM for Stack.  GPIO IOToggle Use the GPIO BSRR (Port bit set/reset register) and BRR (Port bit reset register) for IO toggling. These registers allow modifying only one or several GPIO pins in a single atomic write access. JTAG_Remap Use the JTAG IOs as standard GPIOs and gives a configuration sequence.  I2C 10bitAddress Transfer a data buffer from I2C1 to I2C2 in 10-bit addressing mode. DualAddress Transfer two data buffer from I2C1 to I2C2 through its two addresses in the same application. Interrupt Transfer a data buffer from master transmitter (I2C1) to slave receiver (I2C2) and from slave transmitter (I2C2) to master receiver (I2C1) using interrupts. M24C08_EEPROM Use the I2C firmware library and an associate I2C EEPROM driver to communicate with an M24C08 EEPROM. SMBus Send an ARP command from I2C1 to I2C2 in SMBus mode.  I2S Interrupt Describe how to configure and use the I2S mode interrupts with 16bits and 24 bits data in 32 bits packet frames. SPI_I2S_Switch Describe how to configure and use the I2S mode in alternation with the SPI maode. Simple communication is performed between two SPIs then between two I2Ss (raw data transfer and verification).  IWDG Example Reload at regulate period the IWDG counter using the SysTick interrupt.  LIB_DEBUG Example Demonstrates the STM32F10x Firmware Library DEBUG mode. When the Debug mode is selected, the assert macro is expanded and run time checking is enabled in the firmware library code. The run-time checking allows checking that all the library functions input value lies within the parameter allowed values.  NVIC CM3_LPModes Use the NVIC firmware library to demonstrate the Cortex-M3 low power modes capabilities (WFE and WFI). DMA_WFIMode Enter the system to WFI mode with DMA transfer enabled and wake-up from this mode by the DMA End of Transfer interrupt. IRQ_Channels Use of the Nested Vectored Interrupt Controller (NVIC) and IRQ Channels configuration. Priority Use of the Nested Vectored Interrupt Controller (NVIC) and priority mechanism (PreemptionPriority , SubPriority). System_Handlers Use of the Nested Vectored Interrupt Controller (NVIC) and system handlers. VectorTable_Relocation Use the NVIC firmware library to set the CortexM3 vector table in a specific address other than default. This can be used to build program which will be loaded into Flash memory by an application previously programmed in the sector0 of the Flash memory. Such application can be In-Application Programming (IAP, through USART) or Device Firmware Upgrade (DFU, through USB).  PWR STANDBY Enter the system to STANDBY mode and wake-up from this mode using: external RESET, RTC Alarm or WKUP pin. STOP Enter the system to STOP mode and wake-up using EXTI Line interrupts. The EXTI Line sources are Key Button and RTC Alarm.  RCC Example Configure the system clock source, AHB, APB2 and APB1 prescaler. It demonstrates also the Clock Security System (CSS) which handles the High Speed External clock (HSE) failure detection and system clock back-up.  RTC Calendar Explain how to use the RTC peripheral. As an application example, it demonstrates how to setup the RTC peripheral, in terms of prescaler and interrupts, to be used to keep time and to generate Second interrupt. LSI_Calib Describe how to use the LSI calibration to get RTC accurate time base.  SDIO Example Use the SDIO firmware library and an associate driver to perform read/write operations on the SD Card memory.  SPI CRC Set a communication between two SPIs in full-duplex mode and performs a transfer from Master to Slave and Slave to Master followed by CRC transmission. DMA Set a communication between the two SPIs in simplex mode and performs a transfer from Master in polling mode to the Slave in DMA receive mode. The NSS pin is managed by hardware. FullDuplex_SoftNSS Set a communication between the two SPIs in full-duplex mode and performs a transfer from Master to Slave and then Slave to Master in the same application with software NSS management. M25P64_FLASH Use the SPI firmware library and an associated SPI FLASH driver to communicate with an M25P64 FLASH. Simplex_Interrupt Set a communication between two SPIs in simplex mode and performs a data buffer transfer from Master to Slave using TxE interrupt for master and RxNE interrupt for slave.  SysTick Example Configure the SysTick to generate a time base equal to 1ms.  TIM 6Steps Configure the TIM1 peripheral to generate 6 Steps. 7PWM_Output Configure the TIM1 peripheral to generate 7 PWM signals with 4 different duty cycles. Cascade_Synchro Synchronize TIM peripherals in cascade mode. ComplementarySignals Configure the TIM1 peripheral to generate three complementary TIM1 signals, to insert a defined dead time value, to use the break feature and to lock the desired parameters. DMA Use DMA with TIM1 Update request to transfer Data from memory to TIM1 Capture Compare Register3. ExtTrigger_Synchro Synchronize TIM peripherals in cascade mode with an external trigger. OCActive Configure the TIM peripheral to generate four different signals with four different delays. OCInactive Configure the TIM peripheral in Output Compare Inactive mode with the corresponding Interrupt requests for each channel. OCToggle Configure the TIM peripheral to generate four different signals with four different frequencies. OnePulse Use the TIM peripheral to generate One pulse after a Rising edge of an external signal is received in Timer Input pin. Parallel_Synchro Synchronize TIM peripherals in parallel mode. PWM_Input Use the TIM peripheral to measure the frequency and duty cycle of an external signal. PWM_Output Configure the TIM peripheral in PWM (Pulse Width Modulation) mode. TIM1_Synchro Synchronize TIM1 and Timers (TIM3 and TIM4) in parallel mode. TimeBase Configure the TIM peripheral in Output Compare Timing mode with the corresponding Interrupt requests for each channel in order to generate 4 different time bases.   USART DMA_Interrupt Provide a basic communication between USART1 and USART2 using DMA capability, flags and interrupts. DMA_Polling Provide a basic communication between USART1 and USART2 using DMA capability. HalfDuplex Provide a basic communication between USART1 and USART2 in Half-Duplex mode using flags. HyperTerminal_HwFlowControl  Use the USART with hardware flow control and communicate with the Hyperterminal. HyperTerminal_Interrupt Use the USART1 interrupts to communicate with the hyperterminal. Interrupt Provide a basic communication between USART1 and USART2 using interrupts. IrDA Use IrDA mode. Two projects are provided: one for IrDA transmitter and the second for IrDA receiver MultiProcessor Use the USART in multi-processor mode. Polling Provide a basic communication between USART1 and USART2 using flags. Printf Retarget the C library printf function to the USART. Smartcard Use the USART in Smart Card mode. Synchronous Provide a basic communication between USART1 (Synchronous mode) and SPI1 using flags.  WWDG Example Update at regulate period the WWDG counter using the Early Wakeup interrupt (EWI). NOTES: 1) Low-density devices are STM32F101xx and STM32F103xx microcontrollers where the Flash memory density are 16 or 32 Kbytes.  2) Medium-density devices are STM32F101xx and STM32F103xx microcontrollers where the Flash memory density ranges between 32 and 128 Kbytes. 3) High-density devices are STM32F101xx and STM32F103xx microcontrollers where the Flash memory density ranges between 256 and 512 Kbytes. Firmware and documents For complete documentation refer to www.st.com/STM32