F4的PA14如何做普通输入口

Eternal单人行 · 发表于 2017-10-24 15:01:38

直接初始化无效，应该是JTCK没有失能，求指导
[mw_shl_code=c,true] GPIO_InitTypeDef GPIO_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);//RCC_APB2Periph_AFIO
////////////////GPIO_PinRemapConfig(GPIO_Remap_SWJ_Disable , ENABLE);  F4没这句话
GPIO_InitStructure.GPIO_Pin  = GPIO_PIN_14;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

SYSCFG_EXTILineConfig(WIEGAND1_PortSource,EXTI_PinSource14);
EXTI_InitStructure.EXTI_Line = EXTI_Line14;
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);

NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x01;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x02;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure); [/mw_shl_code]

正点原子 · 发表于 2017-10-24 15:01:39

这是配置PA15的。
PA14的自己参考写
[mw_shl_code=applescript,true]//USB OTG 底层IO初始化
//pdev:USB OTG内核结构体指针
void USB_OTG_BSP_Init(USB_OTG_CORE_HANDLE *pdev)
{
RCC->AHB1ENR|=1<<0; //使能PORTA时钟
RCC->AHB2ENR|=1<<7; //使能USB OTG时钟
GPIO_Set(GPIOA,3<<11,GPIO_MODE_AF,GPIO_OTYPE_PP,GPIO_SPEED_100M,GPIO_PUPD_NONE); //PA11/12复用功能输出
GPIO_Set(GPIOA,PIN15,GPIO_MODE_OUT,GPIO_OTYPE_PP,GPIO_SPEED_100M,GPIO_PUPD_NONE); //PA15推挽输出
    USB_HOST_PWRCTRL=1; //开启USB HOST电源供电
    GPIO_AF_Set(GPIOA,11,10); //PA11,AF10(USB)
GPIO_AF_Set(GPIOA,12,10); //PA12,AF10(USB)
}[/mw_shl_code]