使用STM32F427II写一个单片机所有GPIO为复用推挽输出初始化程序
时间: 2024-03-21 19:43:08 浏览: 14
好的,以下是使用STM32F427II初始化所有GPIO口为复用推挽输出的示例代码:
```c
#include "stm32f427xx.h"
void GPIO_Init(void)
{
// 开启GPIO时钟
RCC->AHB1ENR |= RCC_AHB1ENR_GPIOAEN |
RCC_AHB1ENR_GPIOBEN |
RCC_AHB1ENR_GPIOCEN |
RCC_AHB1ENR_GPIODEN |
RCC_AHB1ENR_GPIOEEN |
RCC_AHB1ENR_GPIOFEN |
RCC_AHB1ENR_GPIOGEN |
RCC_AHB1ENR_GPIOHEN |
RCC_AHB1ENR_GPIOIEN |
RCC_AHB1ENR_GPIOJEN |
RCC_AHB1ENR_GPIOKEN;
// 配置所有GPIO口为复用推挽输出
GPIOA->MODER = 0xAAAAAAAA;
GPIOA->OTYPER = 0x00000000;
GPIOA->OSPEEDR = 0xFFFFFFFF;
GPIOA->PUPDR = 0x00000000;
GPIOA->AFR[0] = 0x00000000;
GPIOA->AFR[1] = 0x00000000;
GPIOB->MODER = 0xAAAAAAAA;
GPIOB->OTYPER = 0x00000000;
GPIOB->OSPEEDR = 0xFFFFFFFF;
GPIOB->PUPDR = 0x00000000;
GPIOB->AFR[0] = 0x00000000;
GPIOB->AFR[1] = 0x00000000;
GPIOC->MODER = 0xAAAAAAAA;
GPIOC->OTYPER = 0x00000000;
GPIOC->OSPEEDR = 0xFFFFFFFF;
GPIOC->PUPDR = 0x00000000;
GPIOC->AFR[0] = 0x00000000;
GPIOC->AFR[1] = 0x00000000;
GPIOD->MODER = 0xAAAAAAAA;
GPIOD->OTYPER = 0x00000000;
GPIOD->OSPEEDR = 0xFFFFFFFF;
GPIOD->PUPDR = 0x00000000;
GPIOD->AFR[0] = 0x00000000;
GPIOD->AFR[1] = 0x00000000;
GPIOE->MODER = 0xAAAAAAAA;
GPIOE->OTYPER = 0x00000000;
GPIOE->OSPEEDR = 0xFFFFFFFF;
GPIOE->PUPDR = 0x00000000;
GPIOE->AFR[0] = 0x00000000;
GPIOE->AFR[1] = 0x00000000;
GPIOF->MODER = 0xAAAAAAAA;
GPIOF->OTYPER = 0x00000000;
GPIOF->OSPEEDR = 0xFFFFFFFF;
GPIOF->PUPDR = 0x00000000;
GPIOF->AFR[0] = 0x00000000;
GPIOF->AFR[1] = 0x00000000;
GPIOG->MODER = 0xAAAAAAAA;
GPIOG->OTYPER = 0x00000000;
GPIOG->OSPEEDR = 0xFFFFFFFF;
GPIOG->PUPDR = 0x00000000;
GPIOG->AFR[0] = 0x00000000;
GPIOG->AFR[1] = 0x00000000;
GPIOH->MODER = 0xAAAAAAAA;
GPIOH->OTYPER = 0x00000000;
GPIOH->OSPEEDR = 0xFFFFFFFF;
GPIOH->PUPDR = 0x00000000;
GPIOH->AFR[0] = 0x00000000;
GPIOH->AFR[1] = 0x00000000;
GPIOI->MODER = 0xAAAAAAAA;
GPIOI->OTYPER = 0x00000000;
GPIOI->OSPEEDR = 0xFFFFFFFF;
GPIOI->PUPDR = 0x00000000;
GPIOI->AFR[0] = 0x00000000;
GPIOI->AFR[1] = 0x00000000;
GPIOJ->MODER = 0xAAAAAAAA;
GPIOJ->OTYPER = 0x00000000;
GPIOJ->OSPEEDR = 0xFFFFFFFF;
GPIOJ->PUPDR = 0x00000000;
GPIOJ->AFR[0] = 0x00000000;
GPIOJ->AFR[1] = 0x00000000;
GPIOK->MODER = 0xAAAAAAAA;
GPIOK->OTYPER = 0x00000000;
GPIOK->OSPEEDR = 0xFFFFFFFF;
GPIOK->PUPDR = 0x00000000;
GPIOK->AFR[0] = 0x00000000;
GPIOK->AFR[1] = 0x00000000;
}
```
在这个例子中,我们首先开启了所有GPIO口的时钟,然后使用一个简单的循环将每个GPIO口都配置为复用推挽输出。我们还需要使用GPIO的AFR寄存器来设置GPIO的复用功能。你可以根据你的具体需求修改这些参数。