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# ADC
- 可选配置RCCHigh Speed Clock配置为Crystal/Ceramic Resonator
- 可选Clock ConfigurationPLL Source Mux选择HSEX9System Clock Mux选择为PLLCLKAPB1 Prescaler选择/2ADC Prescaler选择/6
- 给PA5选择ADC1_IN5在AnalogADC1中
- 配置Continuous Conversion Mode为Enable这样转换会一直进行不用每次手动触发
- 配置Rank - Sampling Time为239.5Cycles,这样采样时间长,数据更稳定
- 配置USART2Mode配置为Asynchronous用于输出ADC数据
- 先HAL_ADC_Start打开ADC转换
- 再通过HAL_ADC_GetValue获得ADC结果