stm32f103对输出的两路pwn波记高电平次数代码

以下是STM32F103对输出的两路PWM波计高电平次数的代码：

#include "stm32f10x.h"

#define PWM_FREQ 1000 // PWM频率
#define PWM_PERIOD (SystemCoreClock / PWM_FREQ - 1) // PWM周期

uint16_t PWM1_Duty = 500; // PWM1占空比
uint16_t PWM2_Duty = 250; // PWM2占空比

uint32_t PWM1_HighCount = 0; // PWM1高电平计数
uint32_t PWM2_HighCount = 0; // PWM2高电平计数

int main(void)
{
    // 使能GPIOB和TIM3时钟
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
    
    // 配置GPIOB.0和GPIOB.1为复用推挽输出
    GPIO_InitTypeDef GPIO_InitStructure;
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOB, &GPIO_InitStructure);
    
    // 配置TIM3为PWM模式
    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
    TIM_TimeBaseStructure.TIM_Period = PWM_PERIOD;
    TIM_TimeBaseStructure.TIM_Prescaler = 0;
    TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
    
    // 配置TIM3的通道1和通道2为PWM输出模式
    TIM_OCInitTypeDef TIM_OCInitStructure;
    TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
    TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
    TIM_OCInitStructure.TIM_Pulse = PWM1_Duty;
    TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
    TIM_OC1Init(TIM3, &TIM_OCInitStructure);
    TIM_OCInitStructure.TIM_Pulse = PWM2_Duty;
    TIM_OC2Init(TIM3, &TIM_OCInitStructure);
    
    // 启动TIM3
    TIM_Cmd(TIM3, ENABLE);
    
    while (1)
    {
        // 计算PWM1和PWM2的高电平次数
        PWM1_HighCount = TIM_GetCounter(TIM3) * PWM1_Duty / PWM_PERIOD;
        PWM2_HighCount = TIM_GetCounter(TIM3) * PWM2_Duty / PWM_PERIOD;
    }
}

在上面的代码中，我们首先定义了PWM的频率和占空比。然后定义了两个变量`PWM1_HighCount`和`PWM2_HighCount`，分别用来记录PWM1和PWM2的高电平次数。

在`main`函数中，我们先使能GPIOB和TIM3的时钟。然后配置GPIOB.0和GPIOB.1为复用推挽输出。接着，我们配置TIM3为PWM模式，并将通道1和通道2配置为PWM输出模式。最后启动TIM3的计数器。

在`while`循环中，我们通过计算当前TIM3计数器的值，以及PWM1和PWM2的占空比，来计算PWM1和PWM2的高电平次数。这样就可以实现对输出的两路PWM波高电平次数的计数了。