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# Release Notes for STM32F2xx Standard Peripherals Library Drivers (StdPeriph_Driver)

Copyright 2011 STMicroelectronics

## Contents

1. STM32F2xx Standard Peripherals Library Drivers update History
2. License

## STM32F2xx Standard Peripherals Library Drivers update History

### V1.0.0 / 18-April-2011

Main Changes

- First official release for STM32F2xx devices
- All drivers

- Update file and function's header comments to add more explanation and fix Doxygen tags formatting

- stm32f2xx_syscfg.h/.c

- Add 2 functions for Compensation Cell management:
  void SYSCFG_CompensationCellCmd(FunctionalState NewState);
  FlagStatus SYSCFG_GetCompensationCellStatus(void);

- stm32f2xx_rtc.h

- RTC_DateTypeDef structure: change RTC_Month and RTC_WeekDay members size to 8bit (instead of 32bit)

### V1.0.0RC1 / 18-March-2011

Main Changes

- Official version (V1.0.0) Release Candidate 1
- All drivers

- Add more comments and information about how to use the driver and the functions API
- Delete registers definition from stm32f2xx_ppp.c and use defines within stm32f2xx.h file

- stm32f2xx_rcc.h/.c

- RCC_PLLConfig() function updated to support only Silicon RevisionB and RevisionY (PLLR parameter removed)

- stm32f2xx_spi.c

- I2S_Init() function updated to support only the I2S clock scheme available in Silicon RevisionB and RevisionY

- stm32f2xx_can.h/.c

- Add 5 new functions

- 3 new functions controlling the counter errors: CAN_GetLastErrorCode(), CAN_GetReceiveErrorCounter() and CAN_GetLSBTransmitErrorCounter()

- 1 new function to select the CAN operating mode: CAN_OperatingModeRequest()

- 1 new function to support CAN TT mode: CAN_TTComModeCmd()

- CAN_TransmitStatus() function updated to support all CAN transmit intermediate states

- stm32f2xx_adc.h/.c

- Name of the possible values of ADC_DMAAccessMode parameter modified as below:
  ADC_DMAAccessMode_HalfWord -> ADC_DMAAccessMode_1
  ADC_DMAAccessMode_TwoHalfWords -> ADC_DMAAccessMode_2
  ADC_DMAAccessMode_TwoBytes -> ADC_DMAAccessMode_3
- ADC_MultiModeDMARequestAfterLastTransferCmd(): the 1st parameter ADCx removed

- stm32f2xx_cryp.h/.c

- CRYP_GetITStatus() function coding updated
- Add 2 functions for CRYP Context swapping:
  ErrorStatus CRYP_SaveContext(CRYP_Context* CRYP_ContextSave, CRYP_KeyInitTypeDef* CRYP_KeyInitStruct);
  void CRYP_RestoreContext(CRYP_Context* CRYP_ContextRestore);
- Name of the possible values of CRYP_DMAReq parameter modified as below:
  CRYP_DMAReq_Rx -> CRYP_DMAReq_DataIN
  CRYP_DMAReq_Tx -> CRYP_DMAReq_DataOUT

- Add three drivers to provide high level functions for AES, DES and TDES:

- stm32f2xx_cryp_aes.c: provides high level functions to encrypt and decrypt an input message using AES in ECB/CBC/CTR modes
- stm32f2xx_cryp_des.c: provides high level functions to encrypt and decrypt an input message using DES in ECB/CBC modes
- stm32f2xx_cryp_tdes.c: provides high level functions to encrypt and decrypt an input message using TDES in ECB/CBC modes
- These drivers uses the stm32f2xx_cryp.c/.h driver to access the STM32F2xx CRYP peripheral

- stm32f2xx_hash.h/.c

- HASH_GetITStatus() function coding updated
- Add 2 functions for HASH Context swapping:
  void HASH_ContextSaving(HASH_Context* HASH_ContextSave);
  void HASH_ContextRestoring(HASH_Context* HASH_ContextRestore)

- Add two drivers to provide high level functions for SHA1 and MD5:

- stm32f2xx_hash_sha1.c: provides high level functions to compute the HASH SHA1 and HMAC SHA1 Digest of an input message
- stm32f2xx_hash_md5.c: provides high level functions to compute the HASH MD5 and HMAC MD5 Digest of an input message
- These drivers uses the stm32f2xx_hash.c/.h driver to access the STM32F2xx HASH peripheral

- stm32f2xx_rng.h/.c

- RNG_GetITStatus() function coding updated
- Add new function:
  void RNG_ClearFlag(uint8_t RNG_FLAG);

- stm32f2xx_gpio.h

- Change the name of the parameter GPIO_Mode_AIN by GPIO_Mode_AN

- stm32f2xx_rtc.h/.c

- Rename the function RTC_DigitalCalibConfig() to RTC_CoarseCalibConfig() (no change on the parameter name)
- Rename the function RTC_DigitalCalibCmd() to RTC_CoarseCalibCmd() (no change on the parameter name)
- Add 3 functions:
  void RTC_DateStructInit(RTC_DateTypeDef* RTC_DateStruct);
  void RTC_TimeStructInit(RTC_TimeTypeDef* RTC_TimeStruct);
  void RTC_AlarmStructInit(RTC_AlarmTypeDef* RTC_AlarmStruct);

- stm32f2xx_flash.h/.c

- Name of the possible values of OB_BOR parameter modified as below:
  OB_BOR_Level_3 -> OB_BOR_LEVEL3
  OB_BOR_Level_2 -> OB_BOR_LEVEL2
  OB_BOR_Level_1 -> OB_BOR_LEVEL1
  OB_BOR_Level_Off -> OB_BOR_OFF
- FLASH_OB_GetBOR() function updated to return the BOR level value as defined in OPTCR register

- stm32f2xx_i2c.h/.c

- Add 1 new function:

- I2C_NACKPositionConfig(): This function configures the same bit (POS) as I2C_PECPositionConfig() but is intended to be used in I2C mode while I2C_PECPositionConfig() is intended to used in SMBUS mode.

- stm32f2xx_tim.h

- Change the TIM_DMABurstLength_xBytes definitions to TIM_DMABurstLength_xTansfers

## 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