谁能详细说明一下GPIO管脚类型（上拉，悬浮...）怎样使用的

只看该作者 · 2015-10-23 22:02

typedef enum
{
  GPIO_Mode_In_FL_No_IT    = (uint8_t)0x00, /*!< Input floating, no external interrupt */
  GPIO_Mode_In_PU_No_IT    = (uint8_t)0x40, /*!< Input pull-up, no external interrupt */
  GPIO_Mode_In_FL_IT       = (uint8_t)0x20, /*!< Input floating, external interrupt */
  GPIO_Mode_In_PU_IT       = (uint8_t)0x60, /*!< Input pull-up, external interrupt */
  GPIO_Mode_Out_OD_Low_Fast  = (uint8_t)0xA0, /*!< Output open-drain, low level, 10MHz */
  GPIO_Mode_Out_PP_Low_Fast  = (uint8_t)0xE0, /*!< Output push-pull, low level, 10MHz */
  GPIO_Mode_Out_OD_Low_Slow  = (uint8_t)0x80, /*!< Output open-drain, low level, 2MHz */
  GPIO_Mode_Out_PP_Low_Slow  = (uint8_t)0xC0, /*!< Output push-pull, low level, 2MHz */
  GPIO_Mode_Out_OD_HiZ_Fast  = (uint8_t)0xB0, /*!< Output open-drain, high-impedance level, 10MHz */
  GPIO_Mode_Out_PP_High_Fast = (uint8_t)0xF0, /*!< Output push-pull, high level, 10MHz */
  GPIO_Mode_Out_OD_HiZ_Slow  = (uint8_t)0x90, /*!< Output open-drain, high-impedance level, 2MHz */
  GPIO_Mode_Out_PP_High_Slow = (uint8_t)0xD0 /*!< Output push-pull, high level, 2MHz */
}GPIO_Mode_TypeDef;

1万 · 2015-10-23 22:09

就看后面的注释啊。第一个，输入浮点，没有外部中断。第二个输入上拉电阻配置，无外部中断。

只看该作者 · 2015-10-25 21:27

网上有很多的
http://wenku.baidu.com/link?url= ... F7u5TbR91BDYwC2jwTe

只看该作者 · 2015-10-28 22:10

GPIO基本设置
GPIOMode_TypeDef GPIO mode定义及偏移地址
GPIO_Mode_AIN = 0x0,    //模拟输入
GPIO_Mode_IN_FLOATING = 0x04, //悬空输入
GPIO_Mode_IPD = 0x28, //下拉输入
GPIO_Mode_IPU = 0x48, //上拉输入
GPIO_Mode_Out_OD = 0x14, //开漏输出
GPIO_Mode_Out_PP = 0x10,  //推挽输出
GPIO_Mode_AF_OD = 0x1C, //开漏复用
GPIO_Mode_AF_PP = 0x18 //推挽复用