This file contains ambiguous Unicode characters that may be confused with others in your current locale. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to highlight these characters.
# PWM_DRV8833
- 需要打开外部晶振，将SYSCLK配置到72MHz，APB timer clocks也配置到72MHz
- 给PA0、PA1分别配置TIM2_CH1、TIM2_CH2
- 进入Timers - TIM2
- Clock Source配置Internal Clock
- Channel1配置PWM Generation CH1
- Channel2配置PWM Generation CH2
- Prescaler配置为72-1，Counter Period配置为100-1，这样PWM频率就是10kHz
- HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_1) 启动PWM输出
> CH1和CH2，同时只能有1个通道输出
>
> 切换输出通道，可以切换正/反转
- __HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_1, 80) 可以改变占空比
> 占空比低于60%有可能导致电机转不起来
> 占空比 = 此数值 / Counter Period
- 接线
- 用4P杜邦线，连接开发板和模块，模块接GND-VCC-IN2-IN1
- 电机两根线连接模块OUT1-OUT2