PWM 技术原理

CUBEMX PWM配置

pwm初始化

MX_TIM2_Init();
HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_4);

设置pwm

 //pwmVal 0 ~ 1000
__HAL_TIM_SetCompare(&htim2, TIM_CHANNEL_4, pwmVal);