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STM32_外设例程库.pdf 7.63MB

December 2011

DocID 18540 Rev 1

1/634



www.st.com

Introduction

The STM32F2xx Standard Peripheral Library covers 3 abstraction levels, and includes:

 A complete register address mapping with all bits, bitfields and registers declared in C. This avoids

a cumbersome task and more important, it brings the benefits of a bug free reference mapping file,

speeding up the early project phase.

 A collection of routines and data structures covering all peripheral functions (drivers with common

API). It can directly be used as a reference framework, since it also includes macros for supporting

core-related intrinsic features, common constants, and definition of data types.

 A set of examples covering all available peripherals with template projects for the most common

development tools. With the appropriate hardware evaluation board, this allows to get started with

a brand-new micro within few hours.󳘪

Each driver consists of a set of functions covering all peripheral features. The development of each

driver is driven by a common API (application programming interface) which standardizes the driver

structure, the functions and the parameter names.󳘪

The driver source code is developed in „Strict ANSI-C‟ (relaxed ANSI-C for projects and example files).

It is fully documented and is MISRA-C 2004 compliant. Writing the whole library in „Strict ANSI-C‟ makes

it independent from the development tools. Only the start-up files depend on the development tools.

Thanks to the Standard Peripheral Library, low-level implementation details are transparent so that

reusing code on a different MCU requires only to reconfigure the compiler. As a result, developers can

easily migrate designs across the STM32 series to quickly bring product line extensions to market

without any redesign. In addition, the library is built around a modular architecture that makes it easy to

tailor and run it on the same MCU using hardware platforms different from ST evaluation boards.

The Standard Peripheral Library implements run-time failure detection by checking the input values for

all library functions. Such dynamic checking contributes towards enhancing the robustness of the

software. Run-time detection is suitable for user application development and debugging. It adds an

overhead which can be removed from the final application code to minimize code size and execution

speed. For more details refer to Section 1.1.5: "Run-time checking".󳘪

Since the Standard Peripheral Library is generic and covers all peripheral features, 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 user manual is structured as follows:

 Document conventions, rules, architecture and overview of the Library package.

 How to use and customize the Library (step by step).

 Detailed description of each peripheral driver: configuration structure, functions and how to use the

provided API to build your application.󳘪

The STM32F2xx Standard Peripheral Library will be referred to as Library throughout the document,

unless otherwise specified.

UM1061

Description of STM32F2xx Standard Peripheral Library

Contents

UM1061

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DocID 18540 Rev 1

Contents

1 STM32F2xx Standard Peripheral Library ...................................... 18

1.1 Coding rules and conventions ......................................................... 18

1.1.1 Acronyms .......................................................................................... 18

1.1.2 Naming conventions ......................................................................... 19

1.1.3 Coding rules ..................................................................................... 20

1.1.4 Bit-Banding ....................................................................................... 22

1.1.5 Run-time checking ............................................................................ 23

1.1.6 MISRA-C 2004 compliance .............................................................. 25

1.2 Architecture ..................................................................................... 27

1.3 Package description ........................................................................ 28

1.3.1 Library folder structure ...................................................................... 29

1.3.2 Project folder .................................................................................... 32

1.3.3 Utilities folder .................................................................................... 33

1.4 Supported devices and development tools ..................................... 35

1.4.1 Supported devices ............................................................................ 35

1.4.2 Supported development tools and compilers ................................... 36

2 How to use and customize the library .......................................... 37

2.1 Library configuration parameters ..................................................... 37

2.2 Library programming model ............................................................ 39

2.3 Peripheral initialization and configuration ........................................ 40

2.4 How to run your first example.......................................................... 41

2.4.1 Prerequisites ..................................................................................... 41

2.4.2 Run your first example ...................................................................... 41

2.4.3 Run a peripheral example ................................................................ 43

2.5 STM32F2xx programming model using the library .......................... 44

2.6 How to develop your first application ............................................... 46

2.6.1 Starting point .................................................................................... 46

2.6.2 Library configuration parameters ...................................................... 46

2.6.3 system_stm32f2xx.c ......................................................................... 46

2.6.4 main.c ............................................................................................... 47

2.6.5 stm32f2xx_it.c ................................................................................... 49

3 Analog-to-digital converter (ADC)................................................. 50

3.1 ADC Firmware driver registers structures ....................................... 50

3.1.1 ADC_TypeDef .................................................................................. 50

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3.1.2 ADC_Common_TypeDef .................................................................. 51

3.1.3 ADC_InitTypeDef .............................................................................. 52

3.1.4 ADC_CommonInitTypeDef ............................................................... 52

3.2 ADC Firmware driver API description .............................................. 53

3.2.1 How to use this driver ....................................................................... 53

3.2.2 Initialization and configuration .......................................................... 54

3.2.3 Interrupt and flag management ........................................................ 56

3.2.4 Initialization and configuration functions........................................... 57

3.2.5 Analog Watchdog configuration functions ........................................ 60

3.2.6 Temperature Sensor, Vrefint (Voltage Reference internal) .............. 62

3.2.7 Regular Channels Configuration functions ....................................... 62

3.2.8 Regular Channels DMA Configuration functions .............................. 67

3.2.9 Injected channels Configuration functions ........................................ 68

3.2.10 Interrupt and flag management functions ......................................... 74

3.3 ADC Firmware driver defines .......................................................... 76

3.3.1 ADC Firmware driver defines ........................................................... 76

3.4 ADC Programming Example ........................................................... 88

4 Controller area network (CAN) ...................................................... 90

4.1 CAN Firmware driver registers structures ....................................... 90

4.1.1 CAN_TxMailBox_TypeDef ............................................................... 90

4.1.2 CAN_FIFOMailBox_TypeDef ........................................................... 90

4.1.3 CAN_FilterRegister_TypeDef ........................................................... 91

4.1.4 CAN_TypeDef .................................................................................. 91

4.1.5 CAN_InitTypeDef .............................................................................. 92

4.1.6 CAN_FilterInitTypeDef ...................................................................... 94

4.1.7 CanTxMsg ........................................................................................ 95

4.1.8 CanRxMsg ........................................................................................ 95

4.2 CAN Firmware driver API description .............................................. 96

4.2.1 How to use this driver ....................................................................... 96

4.2.2 Initialization and configuration .......................................................... 97

4.2.3 Interrupt and flag management ........................................................ 98

4.2.4 Initialization and configuration functions......................................... 100

4.2.5 CAN Frames Transmission functions ............................................. 103

4.2.6 CAN Frames Reception functions .................................................. 104

4.2.7 CAN Operation modes functions .................................................... 105

4.2.8 CAN Bus Error management functions .......................................... 106

4.2.9 Interrupt and flag management functions ....................................... 108

Contents

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DocID 18540 Rev 1

4.3 CAN Firmware driver defines ........................................................ 111

4.3.1 CAN Firmware driver defines ......................................................... 111

4.4 CAN Programming Example ......................................................... 121

5 CRC calculation unit (CRC) ......................................................... 123

5.1 CRC Firmware driver registers structures ..................................... 123

5.1.1 CRC_TypeDef ................................................................................ 123

5.2 CRC Firmware driver API description ........................................... 123

5.2.1 Functions ........................................................................................ 124

5.3 CRC Programming Example ......................................................... 126

6 Cryptographic processor (CRYP) ............................................... 127

6.1 CRYP Firmware driver registers structures ................................... 127

6.1.1 CRYP_TypeDef .............................................................................. 127

6.1.2 CRYP_InitTypeDef ......................................................................... 128

6.1.3 CRYP_KeyInitTypeDef ................................................................... 129

6.1.4 CRYP_IVInitTypeDef ...................................................................... 129

6.1.5 CRYP_Context ............................................................................... 130

6.2 CRYP Firmware driver API description ......................................... 131

6.2.1 How to use this driver ..................................................................... 131

6.2.2 Initialization and configuration ........................................................ 132

6.2.3 Interrupt and flag management ...................................................... 133

6.2.4 High level functions ........................................................................ 134

6.2.5 Initialization and configuration functions......................................... 135

6.2.6 CRYP Data processing functions ................................................... 138

6.2.7 Context swapping functions ........................................................... 139

6.2.8 CRYPTO DMA interface Configuration function ............................ 140

6.2.9 Interrupt and flag management functions ....................................... 140

6.2.10 High Level AES functions ............................................................... 141

6.2.11 High Level TDES functions ............................................................ 143

6.2.12 High Level DES functions ............................................................... 144

6.3 CRYP Firmware driver defines ...................................................... 145

6.3.1 CRYP Firmware driver defines ....................................................... 145

6.4 CRYP Programming Example ....................................................... 148

7 Digital-to-analog converter (DAC) ............................................... 150

7.1 DAC Firmware driver registers structures ..................................... 150

7.1.1 DAC_TypeDef ................................................................................ 150

7.1.2 DAC_InitTypeDef ............................................................................ 151

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7.2 DAC Firmware driver API description ............................................ 151

7.2.1 DAC peripheral features ................................................................. 151

7.2.2 How to use this driver ..................................................................... 153

7.2.3 DAC channels configuration: trigger, output buffer, data format .... 153

7.2.4 DMA management .......................................................................... 153

7.2.5 Interrupt and flag management ...................................................... 153

7.2.6 DAC channels configuration ........................................................... 153

7.2.7 DMA management function ............................................................ 158

7.2.8 Interrupt and flag management functions ....................................... 159

7.3 DAC Firmware driver defines ........................................................ 161

7.3.1 DAC Firmware driver defines ......................................................... 161

7.4 DAC Programming Example ......................................................... 165

8 Debug support (DBGMCU)........................................................... 167

8.1 DBGMCU Firmware driver registers structures ............................. 167

8.1.1 DBGMCU_TypeDef ........................................................................ 167

8.2 DBGMCU Firmware driver API description ................................... 167

8.2.1 Functions ........................................................................................ 167

8.3 DBGMCU Firmware driver defines ................................................ 170

9 Digital camera interface (DCMI) .................................................. 173

9.1 DCMI Firmware driver registers structures .................................... 173

9.1.1 DCMI_TypeDef ............................................................................... 173

9.1.2 DCMI_InitTypeDef .......................................................................... 174

9.1.3 DCMI_CROPInitTypeDef................................................................ 174

9.1.4 DCMI_CodesInitTypeDef................................................................ 175

9.2 DCMI Firmware driver API description .......................................... 175

9.2.1 How to use this driver ..................................................................... 175

9.2.2 Initialization and configuration ........................................................ 176

9.2.3 Image capture ................................................................................. 176

9.2.4 Interrupt and flag management ...................................................... 176

9.2.5 Initialization and configuration functions......................................... 177

9.2.6 Image capture functions ................................................................. 179

9.2.7 Interrupt and flag management functions ....................................... 180

9.3 DCMI Firmware driver defines ....................................................... 183

9.3.1 DCMI Firmware driver defines ........................................................ 183

9.4 DCMI Programming Example ........................................................ 186

10 DMA controller (DMA) .................................................................. 187

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