#include "stm32f10x.h"

unsigned short dmaarray[66];


DMA_InitTypeDef DMA_InitStructure;
ADC_InitTypeDef ADC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;



void Driver_init(void)
{
    GPIO_InitStructure.GPIO_Pin = PIN_ACCTESTON;
    GPIO_Init(PORT_ACCTESTON, &GPIO_InitStructure);
    
    // ADC Init
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;

    GPIO_InitStructure.GPIO_Pin = PIN_ACCTESTIN;
    GPIO_Init(PORT_ACCTESTIN, &GPIO_InitStructure);

    GPIO_InitStructure.GPIO_Pin = PIN_POWERTESTIN;
    GPIO_Init(PORT_POWERTESTIN, &GPIO_InitStructure);

    GPIO_InitStructure.GPIO_Pin = PIN_CURRENTTESTIN;
    GPIO_Init(PORT_CURRENTTESTIN, &GPIO_InitStructure);
    
    // тактируем DMA    
    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);

    /* DMA1 channel1 configuration ----------------------------------------------*/
    DMA_DeInit(DMA1_Channel1);
    DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
    DMA_InitStructure.DMA_MemoryBaseAddr = (unsigned long)dmaarray;
    DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
    DMA_InitStructure.DMA_BufferSize = sizeof(dmaarray)/sizeof(*dmaarray);
    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_High;
    DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
    DMA_Init(DMA1_Channel1, &DMA_InitStructure);

    DMA_ITConfig(DMA1_Channel1, DMA_IT_TC | DMA_IT_HT, ENABLE);
    
    DMA_Cmd(DMA1_Channel1, ENABLE);
    
    // тактируем ADC
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
    RCC_ADCCLKConfig(RCC_PCLK2_Div2);

    // ADC SETUP-----------------------------------------------------------------    
    ADC_Cmd(ADC1, DISABLE);        

    ADC_DeInit(ADC1);
    /* ADCx Configuration (ADC1CLK = 14 MHz) -----------------------------------*/
    ADC_InitTypeDef ADC_InitStructure;
    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 = 3;
    ADC_Init(ADC1, &ADC_InitStructure);

    /* Enable ADCx */
    ADC_Cmd(ADC1, ENABLE);
    
    ADC_ResetCalibration(ADC1);
    while(ADC_GetResetCalibrationStatus(ADC1) == SET);
    ADC_StartCalibration(ADC1);
    while (ADC_GetCalibrationStatus(ADC1) == SET);

    ADC_RegularChannelConfig(ADC1, PIN_ACCTESTADCCH, 1, ADC_SampleTime_239Cycles5);
    ADC_RegularChannelConfig(ADC1, PIN_POWERTESTADCCH, 2, ADC_SampleTime_239Cycles5);
    ADC_RegularChannelConfig(ADC1, PIN_CURRENTTESTADCCH, 3, ADC_SampleTime_239Cycles5);

    ADC_DMACmd(ADC1, ENABLE);
    ADC_SoftwareStartConvCmd(ADC1, ENABLE);


    NVIC_InitTypeDef NVIC_InitStructure;
    /* Configure and enable ADC interrupt */
    NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel1_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 15;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
}

void DMA_Irq_half(void)
{

}

void DMA_Irq_full(void)
{

}

void DMA_Irq_half(void);
void DMA_Irq_full(void);

void DMA1_Channel1_IRQHandler(void)
{
    if (DMA_GetITStatus(DMA1_IT_HT1) == SET)
    {
        DMA_ClearITPendingBit(DMA1_IT_HT1);
        DMA_Irq_half();
    }
    if (DMA_GetITStatus(DMA1_IT_TC1) == SET)
    {
        DMA_ClearITPendingBit(DMA1_IT_TC1);
        DMA_Irq_full();
    }
}