STM32——ADC采集

#ifndef __BSP_ADC_H
#define __BSP_ADC_H

#include "stm32f10x.h"

/*定义ADC相关的引脚*/
#define ADC_x_1_GPIO_PORT				GPIOC
#define ADC_x_1_PIN_0						GPIO_Pin_1
#define ADC_x_1_PIN_1						GPIO_Pin_2

#define ADC_x_2_GPIO_PORT				GPIOC
#define ADC_x_2_PIN_0						GPIO_Pin_3
#define ADC_x_2_PIN_1						GPIO_Pin_4

#define ADC_GPIO_CLK		RCC_APB2Periph_GPIOC

#define NUMOFCHANNEL		2
/*定义ADC相关的模式配置*/
#define ADC_x_1								ADC1
#define ADC_x_1_CHANNEL_0			ADC_Channel_11
#define ADC_x_1_CHANNEL_1			ADC_Channel_12
#define ADC_x_1_CLK						RCC_APB2Periph_ADC1

#define ADC_x_2					 			ADC2
#define ADC_x_2_CHANNEL_0			ADC_Channel_13
#define ADC_x_2_CHANNEL_1			ADC_Channel_14
#define ADC_x_2_CLK						RCC_APB2Periph_ADC2


/*DMA的相关定义*/
#define DMA_CHANNEL			DMA1_Channel1
#define DMA_CLK				  RCC_AHBPeriph_DMA1

/*ADC中断相关宏定义*/
//#define ADC_IRQ					ADC1_2_IRQn
//#define ADC_IRQHandler	ADC1_2_IRQHandler					

void ADCx_Init(void);

#endif /*__BSP_ADC_H*/

#include "bsp_adc.h"

__IO uint32_t ADC_ConvertedValue[NUMOFCHANNEL]={0,0};
/*
编程思路
（1）初始ADC用到的GPIO；
（2）设置ADC的工作参数并初始化
（3）设置ADC的工作时钟
（4）设置ADC转换通道顺序及采样时间
（5）配置使能ADC转换完成中断，在中断内读取转换完数据
（6）使能ADC
（7）使能软件触发ADC转换
	ADC转换结果数据使用中断方式读取，这里没有使用DMA进行数据传输

*/

/*
*@brief	ADC相关GPIO引脚初始化
*@param	None
*@retval:None
*/
static void ADC_GPIO_Config(void)
{
	GPIO_InitTypeDef GPIO_InitStruct;
	RCC_APB2PeriphClockCmd(ADC_GPIO_CLK,ENABLE);
	
	GPIO_InitStruct.GPIO_Mode	=	GPIO_Mode_AIN;
	GPIO_InitStruct.GPIO_Speed	=	GPIO_Speed_50MHz;
	GPIO_InitStruct.GPIO_Pin	=	ADC_x_1_PIN_0;
	GPIO_Init(ADC_x_1_GPIO_PORT,&GPIO_InitStruct);
	
	GPIO_InitStruct.GPIO_Pin	=	ADC_x_1_PIN_1;	
	GPIO_Init(ADC_x_1_GPIO_PORT,&GPIO_InitStruct);
	
	GPIO_InitStruct.GPIO_Pin	=	ADC_x_2_PIN_0;
	GPIO_Init(ADC_x_2_GPIO_PORT,&GPIO_InitStruct);
	
	GPIO_InitStruct.GPIO_Pin	=	ADC_x_2_PIN_1;	
	GPIO_Init(ADC_x_2_GPIO_PORT,&GPIO_InitStruct);
}

/*
*@brief ADC模式配置
*@param None
*@retvla None
*/
static void ADC_Mode_Config(void)
{
	ADC_InitTypeDef ADC_InitStruct;
	DMA_InitTypeDef DMA_InitStruct;
	RCC_APB2PeriphClockCmd(ADC_x_1_CLK,ENABLE);
	RCC_APB2PeriphClockCmd(ADC_x_2_CLK,ENABLE);
	RCC_AHBPeriphClockCmd(DMA_CLK,ENABLE);
	
	DMA_DeInit(DMA_CHANNEL);

	
	/*-------------- Reset DMA init structure parameters values ------------------*/
  /* Initialize the DMA_PeripheralBaseAddr member */
  DMA_InitStruct.DMA_PeripheralBaseAddr = (uint32_t) ( & ( ADC_x_1->DR ) ) ;
  /* Initialize the DMA_MemoryBaseAddr member */
  DMA_InitStruct.DMA_MemoryBaseAddr = (uint32_t)ADC_ConvertedValue;
  /* Initialize the DMA_DIR member */
  DMA_InitStruct.DMA_DIR = DMA_DIR_PeripheralSRC;
  /* Initialize the DMA_BufferSize member */
  DMA_InitStruct.DMA_BufferSize = NUMOFCHANNEL;
  /* Initialize the DMA_PeripheralInc member */
  DMA_InitStruct.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
  /* Initialize the DMA_MemoryInc member */
  DMA_InitStruct.DMA_MemoryInc = DMA_MemoryInc_Enable;
  /* Initialize the DMA_PeripheralDataSize member */
  DMA_InitStruct.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
  /* Initialize the DMA_MemoryDataSize member */
  DMA_InitStruct.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
  /* Initialize the DMA_Mode member */
  DMA_InitStruct.DMA_Mode = DMA_Mode_Circular;
  /* Initialize the DMA_Priority member */
  DMA_InitStruct.DMA_Priority= DMA_Priority_High;
  /* Initialize the DMA_M2M member */
  DMA_InitStruct.DMA_M2M = DMA_M2M_Disable;
	DMA_Init(DMA_CHANNEL,&DMA_InitStruct);
	DMA_Cmd(DMA_CHANNEL,ENABLE);
	/********************以下是ADC初始化部分************************/
	/* Reset ADC init structure parameters values */
  /* Initialize the ADC_Mode member */
  ADC_InitStruct.ADC_Mode = ADC_Mode_RegSimult;
  /* initialize the ADC_ScanConvMode member */
  ADC_InitStruct.ADC_ScanConvMode = ENABLE;
  /* Initialize the ADC_ContinuousConvMode member */
  ADC_InitStruct.ADC_ContinuousConvMode = ENABLE;
  /* Initialize the ADC_ExternalTrigConv member */
  ADC_InitStruct.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
  /* Initialize the ADC_DataAlign member */
  ADC_InitStruct.ADC_DataAlign = ADC_DataAlign_Right;
  /* Initialize the ADC_NbrOfChannel member */
  ADC_InitStruct.ADC_NbrOfChannel = NUMOFCHANNEL;
	//初始化ADC
	ADC_Init(ADC_x_1,&ADC_InitStruct);
	//配置ADC时钟，CLK2的6分频，即12MHZ
	RCC_ADCCLKConfig(RCC_PCLK2_Div6);
	//配置ADC通道转换顺序为1，第一个转换，采样时间28.5个时钟周期
	ADC_RegularChannelConfig(ADC_x_1,ADC_x_1_CHANNEL_0,1,ADC_SampleTime_28Cycles5);
	ADC_RegularChannelConfig(ADC_x_1,ADC_x_1_CHANNEL_1,2,ADC_SampleTime_28Cycles5);
	ADC_DMACmd(ADC_x_1,ENABLE);
	ADC_Cmd(ADC_x_1,ENABLE);
	/*******************ADC2初始化配置********************/
	ADC_InitStruct.ADC_Mode = ADC_Mode_RegSimult;
  ADC_InitStruct.ADC_ScanConvMode = ENABLE;
  ADC_InitStruct.ADC_ContinuousConvMode = ENABLE;
  ADC_InitStruct.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
  ADC_InitStruct.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStruct.ADC_NbrOfChannel = NUMOFCHANNEL;

	ADC_Init(ADC_x_2,&ADC_InitStruct);
	//配置ADC时钟，CLK2的6分频，即12MHZ
	RCC_ADCCLKConfig(RCC_PCLK2_Div6);
	//配置ADC通道转换顺序为1，第一个转换，采样时间28.5个时钟周期
	ADC_RegularChannelConfig(ADC_x_2,ADC_x_2_CHANNEL_0,1,ADC_SampleTime_28Cycles5);
	ADC_RegularChannelConfig(ADC_x_2,ADC_x_2_CHANNEL_1,2,ADC_SampleTime_28Cycles5);
	//使用外部触发ADC转换
	ADC_ExternalTrigConvCmd(ADC_x_2, ENABLE);
	ADC_Cmd(ADC_x_2,ENABLE);
	//ADC转换结束产生中断，在中断服务函数中读取转换值
  //	ADC_ITConfig(ADC_x,ADC_IT_EOC,ENABLE);

	/*************ADC1*************/
	//初始化ADC校准寄存器
	ADC_ResetCalibration(ADC_x_1);
	//等待校准寄存器初始化完成
	while(ADC_GetResetCalibrationStatus(ADC_x_1));
	//ADC开始校准
	ADC_StartCalibration(ADC_x_1);
	//等待校准完成
	while(ADC_GetCalibrationStatus(ADC_x_1));
	
	/*************ADC2**************/
	//初始化ADC校准寄存器
	ADC_ResetCalibration(ADC_x_2);
	//等待校准寄存器初始化完成
	while(ADC_GetResetCalibrationStatus(ADC_x_2));
	//ADC开始校准
	ADC_StartCalibration(ADC_x_2);
	//等待校准完成
	while(ADC_GetCalibrationStatus(ADC_x_2));
	//由于没有采用外部触发，所以使用软件触发ADC转换
	ADC_SoftwareStartConvCmd(ADC_x_1,ENABLE);
}

/*
*@brief ADC中断配置
*@param None
*@retval:None
*/
//static void ADC_NVIC_Config(void)
//{
//	NVIC_InitTypeDef NVIC_InitStruct;
//	
//	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);

//	NVIC_InitStruct.NVIC_IRQChannel	=	ADC_IRQ;
//	
//	NVIC_InitStruct.NVIC_IRQChannelCmd	=	ENABLE;
//	
//	NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority	=	0;
//	
//	NVIC_InitStruct.NVIC_IRQChannelSubPriority	=	1;
//	

//	
//	NVIC_Init(&NVIC_InitStruct);


//}

/*
*brief ADC初始化
*@param None
*retval None
*/

void ADCx_Init(void)
{
	ADC_GPIO_Config();
	ADC_Mode_Config();
//	ADC_NVIC_Config();
}

main.c

/*
双重ADC多通道采集实验
*/

#include "stm32f10x.h"
#include "bsp_uart.h"
#include "led.h"
#include "bsp_adc.h"

extern __IO uint32_t ADC_ConvertedValue[NUMOFCHANNEL];

float ADC_ConvertedValueLocal[NUMOFCHANNEL*2];

void Delay(uint32_t count)
{
	for(;count!=0;count--);
}

int main(void)
{
	uint16_t temp0=0,temp1=0,temp2=0,temp3=0;
	GPIO_LED_Config();
	USART1_Config();
	ADCx_Init();
	
	printf("**********这是一个ADC测试实验***********\n");
	while(1)
	{
		temp0	=	(ADC_ConvertedValue[0]&0xFFFF0000)>>16;//ADC2CH1
		temp1	= (ADC_ConvertedValue[0]&0xFFFF);//ADC1 CH1
		temp2	=	(ADC_ConvertedValue[1]&0xFFFF0000)>>16;//ADC2 CH2
		temp3	= (ADC_ConvertedValue[1]&0xFFFF);//ADC1 CH2
		
		ADC_ConvertedValueLocal[0]	=	(float)temp0/4096*3.3;		//ADC2 CH1
		ADC_ConvertedValueLocal[1]	=	(float)temp1/4096*3.3;		//ADC1 CH1
		ADC_ConvertedValueLocal[2]	=	(float)temp2/4096*3.3;		//ADC2 CH2
		ADC_ConvertedValueLocal[3]	=	(float)temp3/4096*3.3;		//ADC1 CH2

		printf("\r\nADC1的通道11的值为：%f",ADC_ConvertedValueLocal[1]);
		printf("\r\nADC1的通道12的值为：%f",ADC_ConvertedValueLocal[3]);
		printf("\r\nADC2的通道13的值为：%f",ADC_ConvertedValueLocal[0]);
		printf("\r\nADC1的通道14的值为：%f",ADC_ConvertedValueLocal[2]);

		printf("\r\r\r\n");
		
		Delay(0xffffee);
		
	}	
	
}