TIM16 -> Channel1 -> PWM Generation CH1 Clock Configration -> HCLK = 80MHz Prescaler = 8000 - 1 Counter Period = 100 - 1 生成100Hz的PWM波
Pulse = 20初始占空比20
初始化，打開輸出 HAL_TIM_PWM_Start(&htim16, TIM_CHANNEL_1)
