经典_STM32_ADC多通道采样的例子（2） 经典, 通道

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void RCC_Configuration(void)
{
ErrorStatus HSEStartUpStatus;

RCC_DeInit(); //RCC 系统复位
RCC_HSEConfig(RCC_HSE_ON); //开启HSE
HSEStartUpStatus = RCC_WaitForHSEStartUp(); //等待HSE准备好
if(HSEStartUpStatus == SUCCESS)
{
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable); //EnablePrefetch Buffer
FLASH_SetLatency(FLASH_Latency_2); //Set 2 Latency cycles
RCC_HCLKConfig(RCC_SYSCLK_Div1); //AHB clock = SYSCLK
RCC_PCLK2Config(RCC_HCLK_Div1); //APB2 clock = HCLK
RCC_PCLK1Config(RCC_HCLK_Div2); //APB1 clock = HCLK/2
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_6); //PLLCLK =12MHz * 6 = 72 MHz
RCC_PLLCmd(ENABLE); //Enable PLL
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET); //Wait till PLLis ready
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK); //Select PLL as systemclock source
while(RCC_GetSYSCLKSource() != 0x08); //Wait till PLL is used assystem clock source

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB
| RCC_APB2Periph_GPIOC |RCC_APB2Periph_ADC1 | RCC_APB2Periph_AFIO|RCC_APB2Periph_USART1, ENABLE ); //使能ADC1通道时钟，各个管脚时钟

RCC_ADCCLKConfig(RCC_PCLK2_Div6); //72M/6=12,ADC最大时间不能超过14M
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE); //使能DMA传输

}
}


void ADC1_Configuration(void)
{
ADC_InitTypeDef ADC_InitStructure;

ADC_DeInit(ADC1); //将外设 ADC1 的全部寄存器重设为缺省值


ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;//ADC工作模式:ADC1和ADC2工作在独立模式
ADC_InitStructure.ADC_ScanConvMode =ENABLE; //模数转换工作在扫描模式
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;//模数转换工作在连续转换模式
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;//外部触发转换关闭
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;//ADC数据右对齐
ADC_InitStructure.ADC_NbrOfChannel = M; //顺序进行规则转换的ADC通道的数目
ADC_Init(ADC1, &ADC_InitStructure);//根据ADC_InitStruct中指定的参数初始化外设ADCx的寄存器


//设置指定ADC的规则组通道，设置它们的转化顺序和采样时间
//ADC1,ADC通道x,规则采样顺序值为y,采样时间为239.5周期
ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1,ADC_SampleTime_239Cycles5 );
ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 2,ADC_SampleTime_239Cycles5 );
ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 3,ADC_SampleTime_239Cycles5 );
ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 4,ADC_SampleTime_239Cycles5 );
ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 5,ADC_SampleTime_239Cycles5 );
ADC_RegularChannelConfig(ADC1, ADC_Channel_9, 6,ADC_SampleTime_239Cycles5 );
ADC_RegularChannelConfig(ADC1, ADC_Channel_10, 7,ADC_SampleTime_239Cycles5 );
ADC_RegularChannelConfig(ADC1, ADC_Channel_11, 8,ADC_SampleTime_239Cycles5 );
ADC_RegularChannelConfig(ADC1, ADC_Channel_12, 9,ADC_SampleTime_239Cycles5 );
ADC_RegularChannelConfig(ADC1, ADC_Channel_13, 10,ADC_SampleTime_239Cycles5 );
ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 11,ADC_SampleTime_239Cycles5 );
ADC_RegularChannelConfig(ADC1, ADC_Channel_15, 12,ADC_SampleTime_239Cycles5 );

// 开启ADC的DMA支持（要实现DMA功能，还需独立配置DMA通道等参数）
ADC_DMACmd(ADC1, ENABLE);


ADC_Cmd(ADC1, ENABLE); //使能指定的ADC1

ADC_ResetCalibration(ADC1); //复位指定的ADC1的校准寄存器

while(ADC_GetResetCalibrationStatus(ADC1));//获取ADC1复位校准寄存器的状态,设置状态则等待


ADC_StartCalibration(ADC1); //开始指定ADC1的校准状态

while(ADC_GetCalibrationStatus(ADC1));//获取指定ADC1的校准程序,设置状态则等待


}