STM32高级定时器实验代码并能产生方波

好的，以下是一个简单的基于STM32高级定时器实现产生方波的代码。这段代码配置了TIM1定时器为PWM输出模式，并通过PA8口输出方波信号。其中，方波周期为2000us，占空比为50%，时钟频率为72MHz。

#include "stm32f10x.h"

void TIM1_PWM_Init(void)
{
    TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
    TIM_OCInitTypeDef  TIM_OCInitStructure;
    GPIO_InitTypeDef  GPIO_InitStructure;

    /* TIM1 clock enable */
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);

    /* GPIOA clock enable */
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

    /* GPIOA Configuration: TIM1 Channel 1 as alternate function push-pull */
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    /* Time base configuration */
    TIM_TimeBaseStructure.TIM_Period = 2000-1;  // 方波周期2000us
    TIM_TimeBaseStructure.TIM_Prescaler = 72-1; // 时钟频率为72MHz
    TIM_TimeBaseStructure.TIM_ClockDivision = 0;
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);

    /* PWM1 Mode configuration: Channel1 */
    TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
    TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
    TIM_OCInitStructure.TIM_Pulse = 1000; // 占空比50%
    TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
    TIM_OC1Init(TIM1, &TIM_OCInitStructure);

    TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);

    TIM_ARRPreloadConfig(TIM1, ENABLE);

    /* TIM1 enable counter */
    TIM_Cmd(TIM1, ENABLE);
}

int main(void)
{
    TIM1_PWM_Init();

    while(1);
}

以上代码仅供参考，实际在使用时还需要根据具体的应用场景进行适当修改。希望这些信息能够对您有所帮助。