stm32f103 tim1 pwm

好的，下面是关于 STM32F103 的 TIM1 PWM 的基本步骤：

1. 配置 TIM1 时钟和预分频器：

RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_TimeBaseStructure.TIM_Prescaler = 72 - 1; //预分频器
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_Period = 1000 - 1; //时基
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);

2. 配置 TIM1 PWM 模式：

TIM_OCInitTypeDef TIM_OCInitStructure;
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 500 - 1; //占空比
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC1Init(TIM1, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);

3. 启动 TIM1 计数器：

TIM_Cmd(TIM1, ENABLE);

这样就完成了 STM32F103 的 TIM1 PWM 配置，其中占空比可以根据需要进行调节。