使用stm32f103c8t6输出pwm波

好的，下面是一个简单的使用stm32f103c8t6输出pwm波的例子代码，详细注释请参考代码内部：

#include "stm32f10x.h"

void GPIO_Configuration(void);
void TIM_Configuration(void);

int main(void)
{
    GPIO_Configuration();
    TIM_Configuration();

    while(1)
    {
    }
}

void GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_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;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);

    TIM_TimeBaseStructure.TIM_Period = 1000 - 1; // 设置计数器周期为1000
    TIM_TimeBaseStructure.TIM_Prescaler = 72 - 1; // 设置预分频器为72
    TIM_TimeBaseStructure.TIM_ClockDivision = 0;
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);

    TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
    TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
    TIM_OCInitStructure.TIM_Pulse = 500 - 1; // 设置占空比
    TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
    TIM_OC1Init(TIM1, &TIM_OCInitStructure);

    TIM_Cmd(TIM1, ENABLE);
}

这个例子中，使用了 TIM1_CH1(PA0) 输出 PWM 波，计数器周期为 1000，预分频器为 72，所以 PWM 信号的频率为 1000 / 72 = 13.888 KHz，占空比为 50%。你可以根据需求调整这些参数。