如何用stm32编一个8流水灯两两一组控制程序

您好！下面是基于STM32的8个流水灯两两一组控制程序的示例代码。在代码中，使用GPIO控制器和定时器控制器来控制LED的闪烁。

#include "stm32f10x.h"

void GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

    GPIO_Init(GPIOA, &GPIO_InitStructure);
}

void TIM_Configuration(void)
{
    TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
    TIM_OCInitTypeDef  TIM_OCInitStructure;
    uint16_t PrescalerValue = 0;

    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);

    PrescalerValue = (uint16_t) (SystemCoreClock / 1000000) - 1;

    TIM_TimeBaseStructure.TIM_Period = 99;
    TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue;
    TIM_TimeBaseStructure.TIM_ClockDivision = 0;
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;

    TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

    TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
    TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
    TIM_OCInitStructure.TIM_Pulse = 0;
    TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;

    TIM_OC1Init(TIM2, &TIM_OCInitStructure);

    TIM_Cmd(TIM2, ENABLE);

    TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
}

int main(void)
{
    uint16_t LED[8] = {GPIO_Pin_0, GPIO_Pin_1, GPIO_Pin_2, GPIO_Pin_3, GPIO_Pin_4, GPIO_Pin_5, GPIO_Pin_6, GPIO_Pin_7};
    uint16_t i, j, k, m;

    GPIO_Configuration();

    TIM_Configuration();

    while (1)
    {
        for (j = 0; j < 2; j++)
        {
            for (i = 0; i < 8; i += 2)
            {
                m = 1 << i;
                k = m | (m << 1);
                
                GPIO_SetBits(GPIOA, LED[k]);
                GPIO_ResetBits(GPIOA, LED[k ^ 0xff]);
                
                TIM_SetCompare1(TIM2, 50);
                Delay(200);
                TIM_SetCompare1(TIM2, 0);
            }
        }
    }
}

void Delay(__IO uint32_t nCount)
{
    for (; nCount != 0; nCount--);
}

在这个例子中，我们使用GPIO控制器和定时器控制器来控制8个LED灯的闪烁。使用定时器的PWM功能来控制LED的亮度。在程序的主循环中，使用两个嵌套的循环来控制LED的闪烁。首先循环两次，然后在每次循环中，循环两次来控制两个LED灯的闪烁。

希望这个例子能够对您有所帮助。如果您有任何问题，请随时问我。