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_RGB
- 需要打开外部晶振，将SYSCLK配置到72MHz，APB timer clocks也配置到72MHz
- 给PA6、PA7、PB0分别配置TIM3_CH1、TIM3_CH2、TIM3_CH3
- 进入Timers - TIM3
- 勾选Internal Clock
- Channel 1-3都配置PWM Generation CHx
- Prescaler配置为72-1，Counter Period配置为100-1，这样PWM频率是10kHz
- PWM Generation Channelx - Pulse配置为0~99对应亮度低到高
> 占空比 = 此数值 / Counter Period
- HAL_TIM_PWM_Start 启动PWM输出
- __HAL_TIM_SET_COMPARE 可以改变占空比