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1、STM32各种函数的基本配置（功能是摄像头采集数据SD存储）/*#include"stm32f4_discovery.h"#include"stm32f4xx_conf.h"uint32_tGb_TimingDelay;voidDelay(uint32_tnTime);voidmain(){SysTick_Config(SystemCoreClock/1000);//设置systemtick一毫秒中断RCC->AHB1ENR
2、=0x00000008;//使能GPIOD时钟RCC->APB2ENR
3、=(1<<14);//使能syscfg时钟GPIOD->MODER&=0
4、x00FFFFFF;//设置PD12,13,14,15输出GPIOD->MODER
5、=0x55000000;GPIOD->OTYPER&=0xFFFF0FFF;//设置PD12,13,14,15推挽输出GPIOD->OSPEEDR&=0x00FFFFFF;//PD12,13,14,15速度100mGPIOD->OSPEEDR
6、=0xff000000;SYSCFG->CMPCR=0x00000001;//使用IO补偿单元，//当GPIO速度超过50M的时候要考虑使用此设置GPIOD->PUPDR&=0x00FFFFFF;//PD12,13,14,15无上拉无下拉GPIO
7、D->BSRRH=0xf000;//resetregisterGPIOx_BSRRH,writeonly//setregisterGPIOx_BSRRL,writeonlywhile(1){GPIOD->BSRRH=0xf000;GPIOD->BSRRL=0x1000;Delay(100);GPIOD->BSRRH=0xf000;GPIOD->BSRRL=0x1000<<1;Delay(100);GPIOD->BSRRH=0xf000;GPIOD->BSRRL=0x1000<<2;Delay(100);GPIOD->BSRRH=0xf000;GPIOD->BSRRL=
8、0x1000<<3;Delay(100);}}voidDelay(uint32_tnTime){Gb_TimingDelay=nTime;while(Gb_TimingDelay!=0);}voidSysTick_Handler(void){if(Gb_TimingDelay!=0x00){Gb_TimingDelay--;}}*//*#include"stm32f4_discovery.h"#include"stm32f4xx_conf.h"uint32_tGb_TimingDelay;voidDelay(uint32_tnTime);voidmain(){SysT
9、ick_Config(SystemCoreClock/1000);//设置systemtick一毫秒中断//-------------------------------------GPIO_InitTypeDefGPIO_InitStructure;//EnabletheGPIO_LEDClockRCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD,ENABLE);//ConfiguretheGPIO_LEDpinGPIO_InitStructure.GPIO_Pin=GPIO_Pin_12;GPIO_InitStructure.G
10、PIO_Mode=GPIO_Mode_OUT;GPIO_InitStructure.GPIO_OType=GPIO_OType_PP;GPIO_InitStructure.GPIO_PuPd=GPIO_PuPd_UP;GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;GPIO_Init(GPIOD,&GPIO_InitStructure);//点亮这个灯GPIOD->BSRRL=GPIO_Pin_12;while(1){////GPIOD->ODR^=GPIO_Pin_12;//GPIO_ToggleBits(GPIO_Ty
11、peDef*GPIOx,uint16_tGPIO_Pin);GPIO_ToggleBits(GPIOD,GPIO_Pin_12);//InsertadelayDelay(10);}}voidDelay(uint32_tnTime){Gb_TimingDelay=nTime;while(Gb_TimingDelay!=0);}voidSysTick_Handler(void){if(Gb_TimingDelay!=0x00){Gb_TimingDelay--;}}*//*#include"stm32f4_discovery.h"#include"stm
