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我的代码是照着书上敲的,为什么没有出现相对应的波形呀(stm32)
- #include "stm32f10x.h"
- #include <stdio.h>
- void LED0_Config(void);
- void LED0_On(void);
- void LED0_Off(void);
- void TIM2_Delay500ms(void);
-
- int main()
- {
- unsigned int CountOfToggle=0;
- LED0_Config();
- while(1)
- {
- LED0_On();
- TIM2_Delay500ms();
- LED0_Off();
- TIM2_Delay500ms();
- CountOfToggle++;
- //printf("The Count of Toggle is %d\n",CountOfToggle);
- }
-
- }
- void LED0_Config(void)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
- GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP;//普通推挽;pp-->push-pull
- GPIO_InitStructure.GPIO_Speed=GPIO_Speed_2MHz;
- GPIO_InitStructure.GPIO_Pin=GPIO_Pin_8;
- GPIO_Init(GPIOA,&GPIO_InitStructure);
- }
- void LED0_On(void)
- {
- GPIO_ResetBits(GPIOA,GPIO_Pin_8);
- }
- void LED0_Off(void)
- {
- GPIO_SetBits(GPIOA,GPIO_Pin_8);
- }
- void TIM2_Delay500ms(void)
- {
- TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2,ENABLE);
- TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up;
- TIM_TimeBaseStructure.TIM_Prescaler=36000-1;
- TIM_TimeBaseStructure.TIM_Period=1000-1;
- TIM_TimeBaseInit(TIM2,&TIM_TimeBaseStructure);
- TIM_ClearFlag(TIM2,TIM_FLAG_Update);
- TIM_Cmd(TIM2,ENABLE);
- while(TIM_GetFlagStatus(TIM2,TIM_FLAG_Update)==RESET);
- }
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