#include "HD_ADC.h"

/* adc校准值 */
int16_t Calibrattion_Val = 0;
#define  adcNum  3
/* 通过dma将adc采集的数据存入 */
uint16_t adcData[adcNum] = {0};

/**
  * @brief  初始化adc
  * @param
  * @retval
  */
void HD_ADC_InIt(void)
{
	ADC_InitTypeDef ADC_InitStructure={0};
	GPIO_InitTypeDef GPIO_InitStructure={0};

	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE );
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE );
	RCC_ADCCLKConfig(RCC_PCLK2_Div4);

	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
	GPIO_Init(GPIOA, &GPIO_InitStructure);
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
	GPIO_Init(GPIOA, &GPIO_InitStructure);
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
	GPIO_Init(GPIOA, &GPIO_InitStructure);

	ADC_DeInit(ADC1);
	ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
	ADC_InitStructure.ADC_ScanConvMode = ENABLE;
	ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
	ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
	ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
	ADC_InitStructure.ADC_NbrOfChannel = adcNum;
	ADC_Init(ADC1, &ADC_InitStructure);

	ADC_DMACmd(ADC1, ENABLE);
	ADC_Cmd(ADC1, ENABLE);

	ADC_BufferCmd(ADC1, DISABLE);   //disable buffer
	ADC_ResetCalibration(ADC1);
	while(ADC_GetResetCalibrationStatus(ADC1));
	ADC_StartCalibration(ADC1);
	while(ADC_GetCalibrationStatus(ADC1));
	Calibrattion_Val = Get_CalibrationValue(ADC1);
}

/**
  * @brief  初始化adc的dma输出
  * @param
  * @retval
  */
void ADC_DMA_Init(void)
{
	DMA_InitTypeDef DMA_InitStructure={0};

	RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);

	DMA_DeInit(DMA1_Channel1);
	DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&ADC1->RDATAR;
	DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)adcData;
	DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
	DMA_InitStructure.DMA_BufferSize = adcNum;
	DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
	DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
	DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
	DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
	DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
	DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
	DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
	DMA_Init(DMA1_Channel1, &DMA_InitStructure);
}

/**
  * @brief  启动adc采集
  * @param
  * @retval
  */
void startAdcCapture(void)
{
    /* 使能adc采样通道 */
    DMA_Cmd(DMA1_Channel1 , ENABLE);

    /* 设置转换顺序 */
    ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_239Cycles5);
    ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 2, ADC_SampleTime_239Cycles5);
    ADC_RegularChannelConfig(ADC1, ADC_Channel_5, 3, ADC_SampleTime_239Cycles5);

    /* 使能ADC的dma请求 */
    ADC_DMACmd(ADC1, ENABLE);

    /* 触发adc采样 */
    ADC_SoftwareStartConvCmd(ADC1, ENABLE);
}