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# Release Notes for STM32F4xx CMSIS

Copyright 2014 STMicroelectronics

## Contents

1. STM32F4xx CMSIS update History
2. License

## STM32F4xx CMSIS update History

### V1.5.0 / 06-March-2015

Main Changes

- Add support of STM32F446xx devices

- Add startup files "startup_stm32f446xx.s" for EWARM, MDK-ARM, TrueSTUDIO toolchains: Add QPSI, SPDIFRX, FMPI2C and CEC interrupts handler entry in the vector table

### V1.4.0 / 04-August-2014

Main Changes

- Add support of STM32F411xExx devices

- system_stm32F4xx.c updated to use HSI or HSE Bypass
- new defines added in stm32f4xx.h

- Add startup files "startup_stm32f411xe.s" for EWARM, MDK-ARM, TrueSTUDIO toolchains: Add SPI5 interrupt handler entry in the vector table

- Update EWARM startup files to be compliant with EVARM V7: add NOROOT keyword in all IRQ section names

### V1.3.0 / 08-November-2013

Main Changes

- Add support of STM32F401xExx devices

- Update startup files "startup_stm32f401xx.s" for EWARM, MDK-ARM, TrueSTUDIO and Ride toolchains: Add SPI4 interrupt handler entry in the vector table

### V1.2.1 / 19-September-2013

Main Changes

- system_stm32f4xx.c : Update FMC SDRAM configuration (RBURST mode activation)

- Update startup files "startup_stm32f427_437xx.s" and "startup_stm32f429_439xx.s" for TrueSTUDIO and Ride toolchains and maintain the old name of startup files for legacy purpose

### V1.2.0 / 11-September-2013

Main Changes

- Add support of STM32F429/439xx and STM32F401xCxx devices

- Update definition of STM32F427/437xx devices : extension of the features to include system clock up to 180MHz, dual bank Flash, reduced STOP Mode current, SAI, PCROP, SDRAM and DMA2D
- stm32f4xx.h
  - Add the following device defines :
  - "#define STM32F40_41xxx" for all STM32405/415/407/417xx devices
  - "#define STM32F427_437xx" for all STM32F427/437xx devices
  - "#define STM32F429_439xx" for all STM32F429/439xx devices
  - "#define STM32F401xx" for all STM32F401xx devices
  - Maintain the old device define for legacy purpose
  - Update IRQ handler enumeration structure to support all STM32F4xx Family devices.
- Add new startup files "startup_stm32f40_41xxx.s","startup_stm32f427_437xx.s", "startup_stm32f429_439xx.s" and "startup_stm32f401xx.s" for all toolchains and maintain the old name for startup files for legacy purpose
- system_stm32f4xx.c
  - Update the system configuration to support all STM32F4xx Family devices.

### V1.1.0 / 11-January-2013

Main Changes

- Official release for STM32F427x/437x devices.
- stm32f4xx.h
  - Update product define: replace "#define STM32F4XX" by "#define STM32F40XX" for STM32F40x/41x devices
  - Add new product define: "#define STM32F427X" for STM32F427x/437x devices.
- Add new startup files "startup_stm32f427x.s" for all toolchains
- rename startup files "startup_stm32f4xx.s" by "startup_stm32f40xx.s" for all toolchains
- system_stm32f4xx.c
  - Prefetch Buffer enabled
  - Add reference to STM32F427x/437x devices and STM324x7I_EVAL board
  - SystemInit_ExtMemCtl() function
    - Add configuration of missing FSMC address and data lines
    - Change memory type to SRAM instead of PSRAM (PSRAM is available only on STM324xG-EVAL RevA) and update timing values

### V1.0.2 / 05-March-2012

Main Changes

- All source files: license disclaimer text update and add link to the License file on ST Internet.

### V1.0.1 / 28-December-2011

Main Changes

- All source files: update disclaimer to add reference to the new license agreement
- stm32f4xx.h

- Correct bit definition: RCC_AHB2RSTR_HSAHRST changed to RCC_AHB2RSTR_HASHRST

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

Main Changes

- First official release for STM32F40x/41x devices
- Add startup file for TASKING toolchain
- system_stm32f4xx.c: driver's comments update

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

Main Changes

- Official version (V1.0.0) Release Candidate2 for STM32F40x/41x devices
- stm32f4xx.h

- Add define for Cortex-M4 revision __CM4_REV
- Correct RCC_CFGR_PPRE2_DIV16 bit (in RCC_CFGR register) value to 0x0000E000
- Correct some bits definition to be in line with naming used in the Reference Manual (RM0090)

- GPIO_OTYPER_IDR_x changed to GPIO_IDR_IDR_x
- GPIO_OTYPER_ODR_x changed to GPIO_ODR_ODR_x
- SYSCFG_PMC_MII_RMII changed to SYSCFG_PMC_MII_RMII_SEL
- RCC_APB2RSTR_SPI1 changed to RCC_APB2RSTR_SPI1RST
- DBGMCU_APB1_FZ_DBG_IWDEG_STOP changed to DBGMCU_APB1_FZ_DBG_IWDG_STOP
- PWR_CR_PMODE changed to PWR_CR_VOS
- PWR_CSR_REGRDY changed to PWR_CSR_VOSRDY
- Add new define RCC_AHB1ENR_CCMDATARAMEN
- Add new defines SRAM2_BASE, CCMDATARAM_BASE and BKPSRAM_BASE

- GPIO_TypeDef structure: in the comment change AFR[2] address mapping to 0x20-0x24 instead of 0x24-0x28

- system_stm32f4xx.c

- SystemInit(): add code to enable the FPU
- SetSysClock(): change PWR_CR_PMODE by PWR_CR_VOS
- SystemInit_ExtMemCtl(): remove commented values

- startup (for all compilers)

- Delete code used to enable the FPU (moved to system_stm32f4xx.c file)
- File’s header updated

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

Main Changes

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

## License

Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); You may not use this package except in compliance with the License. You may obtain a copy of the License at:

http://www.st.com/software_license_agreement_liberty_v2
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

For complete documentation on STM32 Microcontrollers visit www.st.com/STM32