在ADC sample time register中可设置每个通道的sample cycles，范围从1.5cycles到239.5cycles。1。cycles...
一、ADC采样保持电路的工作原理 ADC采样保持电路,又称为采样保持放大器(Sample and Hold Amplifier,简称S/H),主要作用是在ADC进行模数转换时,保持输入模拟信号的电平值在一段时间内基本不变,以确保转换的准确性。其工作原理可以概括为两个阶段:采样阶段和保持阶段。 1. 采样阶段 在采样阶段,采样保持电路的开关(通...
这里配置ADC1采样的通道,一路ADC有16个采样口,点击“+”号,配置采样口,可添加单个或多个。 其内部配置如下所示:ADC通道分辨率(Adc Channel Resolution )设置12,ADC通道采样时间(Adc Channel Sample Time Option) 设置为0,即为2。 2.3、ADC通道组配置 ADC通道组配置,通道组的作用是将AD采集的数据进行数模转换,...
对ADC的通道设置不同的采样周期,所对应的采样时间也会不同: ADC_SampleTime_1Cycles5: Sample time equal to 1.5 cycles 采样时间等于1.5个周期 ADC_SampleTime_7Cycles5: Sample time equal to 7.5 cycles 采样时间等于7.5个周期 ADC_SampleTime_13Cycles5: Sample time equal to 13.5 cycles 采样时间等于13.5个...
.sample_time = 240 /* 设置采样周期为55.5 */ }};/* ADC通道参数配置,包括IO口,和对应通道以及采样周期 */ 8.3.3 BSP_ ADC初始化和触发ADC转换的具体实现函数 在bsp_adc.c中定义了 DMA和ADC初始化和触发ADC转换的函数: Cuint16_t BSP_ADC_data[2] ;void bsp_ADC_config(){ driver_adc_regular_...
/* Time Base configuration */ TIM_TimeBaseStructInit(&TIM_TimeBaseStructure); TIM_TimeBaseStructure.TIM_Period = 72 - 1; TIM_TimeBaseStructure.TIM_Prescaler = sample_psc; TIM_TimeBaseStructure.TIM_ClockDivision = 0x00; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; ...
Channel = ADC_CHANNEL_19;sConfig.Rank = ADC_REGULAR_RANK_1;sConfig.SamplingTime = ADC_...
ADC_SampleTime_1Cycles5: Sample time equal to 1.5 cycles 采样时间等于1.5个周期 ADC_SampleTime_7Cycles5: Sample time equal to 7.5 cycles 采样时间等于7.5个周期 ADC_SampleTime_13Cycles5: Sample time equal to 13.5 cycles 采样时间等于13.5个周期 ADC_SampleTime_28Cycles5: Sample time equal to 28.5 ...
sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES; if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK) { _Error_Handler(__FILE__, __LINE__); } /**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time. ...
(ADC1,&ADC_InitStructure);/* Configures ADC1 Channel16 as: first converted channel with an 239 cycles sample time */ADC_RegularChannelConfig(ADC1,ADC_Channel_16,1,ADC_SampleTime_239Cycles5);//采样时间239.5/14MHz = 17.1us/* 使能温度传感器和内部参考电压通道 */ADC_TempSensorVrefintCmd(ENABLE)...