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ST STM32F31xx User Manual

ST STM32F31xx
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Page #319 background image
UM1581
Reset and clock control (RCC)
DocID023800 Rev 1
319/584
Return values
ï‚· None.
Notes
ï‚· As the LSE is in the Backup domain and write access is
denied to this domain after reset, you have to enable write
access using PWR_BackupAccessCmd(ENABLE) function
before to configure the LSE (to be done once after reset).
ï‚· After enabling the LSE (RCC_LSE_ON or
RCC_LSE_Bypass), the application software should wait on
LSERDY flag to be set indicating that LSE clock is stable and
can be used to clock the RTC.
18.2.6.7 RCC_LSEDriveConfig
Function Name
void RCC_LSEDriveConfig ( uint32_t RCC_LSEDrive)
Function Description
Configures the External Low Speed oscillator (LSE) drive
capability.
Parameters
ï‚· RCC_LSEDrive : specifies the new state of the LSE drive
capability. This parameter can be one of the following values:
 RCC_LSEDrive_Low : LSE oscillator low drive
capability.
 RCC_LSEDrive_MediumLow : LSE oscillator medium
low drive capability.
 RCC_LSEDrive_MediumHigh : LSE oscillator medium
high drive capability.
 RCC_LSEDrive_High : LSE oscillator high drive
capability.
Return values
ï‚· None.
Notes
ï‚· None.
18.2.6.8 RCC_LSICmd
Function Name
void RCC_LSICmd ( FunctionalState NewState)
Function Description
Enables or disables the Internal Low Speed oscillator (LSI).
Parameters
ï‚· NewState : new state of the LSI. This parameter can be:
ENABLE or DISABLE.
Return values
ï‚· None.

Table of Contents

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ST STM32F31xx Specifications

General IconGeneral
BrandST
ModelSTM32F31xx
CategoryMicrocontrollers
LanguageEnglish

Summary

How to Use and Customize the Library

Library Configuration Parameters

Details configuration parameters that customize the library for specific applications via define statements.

Peripheral Initialization and Configuration

Step-by-step guide on how to initialize and configure a peripheral, including clock enabling.

Running Your First Example

Guides on loading and executing template examples, covering prerequisites and tool-specific steps.

Developing Your First Application

Outlines the typical starting point and steps for developing an application from scratch.

Analog-to-digital converter (ADC) Firmware Driver

ADC Firmware Driver API Description

Lists and describes the various functions available in the ADC library for peripheral control.

Controller Area Network (bxCAN) Firmware Driver

CAN Firmware Driver API Description

Lists and describes the various functions available in the CAN library for peripheral control.

Comparators (COMP) Firmware Driver

COMP Firmware Driver API Description

Lists and describes the various functions available in the COMP library for peripheral control.

CRC Calculation Unit (CRC) Firmware Driver

CRC Firmware Driver API Description

Lists and describes the various functions for CRC configuration and computation.

Digital-to-Analog Converter (DAC) Firmware Driver

DAC Firmware Driver API Description

Lists and describes the various functions for DAC peripheral control and data transfer.

DMA Controller (DMA) Firmware Driver

DMA Firmware Driver API Description

Lists and describes functions for DMA initialization, configuration, and data transfers.

External Interrupt/Event Controller (EXTI) Firmware Driver

EXTI Firmware Driver API Description

Lists and describes functions for EXTI features, usage, initialization, and interrupt management.

FLASH Memory (FLASH) Firmware Driver

FLASH Firmware Driver API Description

Lists and describes functions for FLASH interface configuration and memory programming.

General-purpose I/Os (GPIO) Firmware Driver

GPIO Firmware Driver API Description

Lists and describes functions for GPIO usage, initialization, read/write, and alternate functions.

Inter-integrated Circuit Interface (I2C) Firmware Driver

I2C Firmware Driver API Description

Lists and describes functions for I2C usage, initialization, communication, SMBUS, and registers management.

Independent Watchdog (IWDG) Firmware Driver

IWDG Firmware Driver API Description

Lists and describes functions for IWDG features, usage, prescaler, activation, and flag management.

Operational Amplifier (OPAMP) Firmware Driver

OPAMP Firmware Driver API Description

Lists and describes functions for OPAMP peripheral features, usage, and initialization.

Power Control (PWR) Firmware Driver

PWR Firmware Driver API Description

Lists and describes functions for backup domain access, PVD configuration, and low power modes.

Reset and Clock Control (RCC) Firmware Driver

RCC Firmware Driver API Description

Lists and describes functions for RCC features, clock configuration, and peripheral clocks.

Real-time Clock (RTC) Firmware Driver

RTC Firmware Driver API Description

Lists and describes functions for RTC operating conditions, domain access, and time/date configuration.

Serial Peripheral Interface (SPI) Firmware Driver

SPI Firmware Driver API Description

Lists and describes functions for SPI usage, initialization, data transfers, CRC calculation, and DMA.

System Configuration Controller (SYSCFG) Firmware Driver

SYSCFG Firmware Driver API Description

Lists and describes functions for SYSCFG usage, initialization, and configuration.

General-Purpose Timers (TIM) Firmware Driver

TIM Firmware Driver API Description

Lists and describes functions for TIM output compare, input capture, advanced control, and synchronization management.

Universal Synchronous Asynchronous Receiver Transmitter (USART) Firmware Driver

USART Firmware Driver API Description

Lists and describes functions for USART usage, initialization, RS485, DMA, interrupts, STOP mode, and AutoBaudRate.

Window Watchdog (WWDG) Firmware Driver

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