stm32闪烁灯交替闪烁周期1s

您可以使用STM32的定时器来实现闪烁灯交替闪烁周期1s。以下是一个简单的示例代码，演示了如何在STM32F系列微控制器上控制一个LED灯的闪烁: ```c #include "stm32f10x.h" void Delay(uint32_t nCount) { for (; nCount != 0; nCount--); } int main(void) { RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE); GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOC, &GPIO_InitStructure); TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_TimeBaseStructure.TIM_Period = 999; TIM_TimeBaseStructure.TIM_Prescaler = 7199; TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE); TIM_Cmd(TIM2, ENABLE); NVIC_InitTypeDef NVIC_InitStructure; NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); uint32_t counter = 0; uint8_t state = 0; while (1) { if (state == 0) { GPIO_SetBits(GPIOC, GPIO_Pin_13); state = 1; } else if (state == 1) { GPIO_ResetBits(GPIOC, GPIO_Pin_13); state = 0; } Delay(1000); } } ```