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UM1581

System configuration controller (SYSCFG)

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21 System configuration controller (SYSCFG)

21.1 SYSCFG Firmware driver registers structures

21.1.1 SYSCFG_TypeDef

SYSCFG_TypeDef is defined in the stm32f30x.h

Data Fields

 __IO uint32_t CFGR1

 __IO uint32_t RCR

 __IO uint32_t EXTICR

 __IO uint32_t CFGR2

Field Documentation

 __IO uint32_t SYSCFG_TypeDef::CFGR1

 SYSCFG configuration register 1, Address offset: 0x00

 __IO uint32_t SYSCFG_TypeDef::RCR

 SYSCFG CCM SRAM protection register, Address offset: 0x04

 __IO uint32_t SYSCFG_TypeDef::EXTICR[4]

 SYSCFG external interrupt configuration registers, Address offset: 0x14-0x08

 __IO uint32_t SYSCFG_TypeDef::CFGR2

 SYSCFG configuration register 2, Address offset: 0x18

21.2 SYSCFG Firmware driver API description

The following section lists the various functions of the SYSCFG library.

21.2.1 How to use this driver

The SYSCFG registers can be accessed only when the SYSCFG interface APB clock is

enabled.

To enable SYSCFG APB clock use:

RCC_APBPeriphClockCmd(RCC_APBPeriph_SYSCFG, ENABLE);

21.2.2 SYSCFG Initialization and Configuration functions

 SYSCFG_DeInit()

 SYSCFG_MemoryRemapConfig()

 SYSCFG_DMAChannelRemapConfig()

 SYSCFG_TriggerRemapConfig()

 SYSCFG_EncoderRemapConfig()

 SYSCFG_USBInterruptLineRemapCmd()

ST STM32F31xx User Manual

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