手上有块STM32F0 Discovery的板子，刚开始学STM32，先上代码吧。
- #include "stm32f0xx.h"
- #include "main.h"
- void SystemInit(void){}
-
- long RCC_Tmp[10];
- long GPIO_Tmp[10];
-
- void SysInit(void)
- {
- /////////// 配置RCC /////////////////////////////
- RCC_Tmp[0] = RCC->CR;
- RCC->CR |= 1<<18; //外部高速时钟旁路
- RCC_Tmp[1] = RCC->CR;
-
- RCC_Tmp[2] = RCC->AHBENR;
- RCC->AHBENR |= 1<<19; //使能PORTC的时钟
- RCC_Tmp[3] = RCC->AHBENR;
-
- RCC_Tmp[4] = RCC->AHBRSTR;
- RCC->AHBRSTR |= 1<<19 ;//复位PORTC
-
- RCC_Tmp[5] = RCC->AHBRSTR;
-
- RCC_Tmp[2] = RCC->AHBENR;
- RCC->AHBENR |= 1<<19; //使能PORTC的时钟
- RCC_Tmp[3] = RCC->AHBENR;
-
- RCC_Tmp[6] = RCC->CR2;
- RCC->CR2 |= 1<<0; // HSI14震荡器关闭
- RCC_Tmp[7] = RCC->CR2;
- ///////////////////////////////////////////////////
- /////////////// 配置GPIOC //////////////////////////////
- GPIO_Tmp[0] = GPIOC->MODER;
- GPIOC->MODER |= 0x05 <<16; //配置PC8\PC9为通用输出
- GPIO_Tmp[1] = GPIOC->MODER;
-
- GPIO_Tmp[2] = GPIOC->ODR;
- GPIOC->ODR |= 0x01<<8; //PC8\PC9输出1
- GPIO_Tmp[3] = GPIOC->ODR;
-
- GPIO_Tmp[4] = GPIOC->OSPEEDR;
- GPIOC->OSPEEDR |= 0x3<<16; //PC8配置为高速口
- GPIO_Tmp[5] = GPIOC->OSPEEDR;
- //////////////////////////////////////////////////////////
- }
- int main(void)
- {
- SysInit();
- while (1)
- {
- GPIOC->ODR |= 0x01 <<9;
- GPIOC->ODR &=~0X01<<9;
- }}
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