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# Release Notes for STM32F4xx Standard Peripherals Library Drivers (StdPeriph_Driver)

Copyright 2011 STMicroelectronics

## Contents

1. STM32F4xx Standard Peripherals Library Drivers update History
2. License

## STM32F4xx Standard Peripherals Library Drivers update History

### V1.0.0 / 30-September-2011

Main Changes

- First official release for STM32F40x/41x devices
- stm32f4xx_rtc.c: remove useless code from RTC_GetDate() function
- stm32f4xx_rcc.c, stm32f4xx_spi.c, stm32f4xx_wwdg.c and stm32f4xx_syscfg.c: driver's comments update

### V1.0.0RC2 / 26-September-2011

Main Changes

- Official version (V1.0.0) Release Candidate1 for STM32F40x/STM32F41x devices
- stm32f4xx_usart.h/.c

- Update procedure to check on overrun error interrupt pending bit, defines for the following flag are added:

- USART_IT_ORE_RX: this flag is set if overrun error interrupt occurs and RXNEIE bit is set
- USART_IT_ORE_ER: this flag is set if overrun error interrupt occurs and EIE bit is set

- stm32f4xx_tim.c

- TIM_UpdateRequestConfig(): correct function header's comment
- TIM_ICInit(): add assert macros to test if the passed TIM parameter has channel 2, 3 or 4

- stm32f4xx_pwr.h/.c

- Rename PWR_FLAG_REGRDY constant to PWR_CSR_REGRDY
- Rename PWR_FLAG_VOSRDY constant to PWR_CSR_VOSRDY
- Rename PWR_HighPerformanceModeCmd(FunctionalState NewState) function to PWR_MainRegulatorModeConfig(uint32_t PWR_Regulator_Voltage)

- stm32f4xx_rcc.h/.c

- RCC_AHB1PeriphClockCmd(): add new constant RCC_AHB1Periph_CCMDATARAMEN as value for RCC_AHB1Periph parameter

- stm32f4xx_spi.h

- IS_I2S_EXT_PERIPH(): add check on I2S3ext peripheral

### V1.0.0RC1 / 25-August-2011

Main Changes

- Official version (V1.0.0) Release Candidate1 for STM32F4xx devices

## License

The enclosed firmware and all the related documentation are not covered by a License Agreement, if you need such License you can contact your local STMicroelectronics office.

THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.

For complete documentation on STM32(CORTEX M3) 32-Bit Microcontrollers visit www.st.com/STM32