定时器频率和PWM原理见PID详解3(摄像头循迹分析)_遗忘是原罪的博客-优快云博客_摄像头寻迹
APB2设置为72M,72M/(72*1000) = 72 * 1000000/72000 = 1000HZ = 1KHZ
HAL_TIM_PWM_Start(&htim1,TIM_CHANNEL_1);
HAL_TIMEx_PWMN_Start(&htim1,TIM_CHANNEL_1);
HAL_TIM_PWM_Start(&htim1,TIM_CHANNEL_2);
HAL_TIMEx_PWMN_Start(&htim1,TIM_CHANNEL_2);
HAL_TIM_PWM_Start(&htim1,TIM_CHANNEL_3);
HAL_TIMEx_PWMN_Start(&htim1,TIM_CHANNEL_3);
__HAL_TIM_SET_COMPARE(&htim1,TIM_CHANNEL_1,CCR);
试验验证,可输出波形
示波器看死区成功