/********************************** (C) COPYRIGHT *******************************
* File Name          : main.c
* Author             : WCH
* Version            : V1.0.0
* Date               : 2021/08/08
* Description        : Main program body.
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* SPDX-License-Identifier: Apache-2.0
*******************************************************************************/

/*
 *@Note
  双ADC混合同步规则+注入采样例程：
  规则组ADC1通道2(PA2)、ADC2通道4(PA4)，注入组ADC1通道3(PA3)ADC2通道5(PA5))
  规则组注入组均采用软件触发，通过DMA中断获取双ADC规则组数据，通过ADC中断获取双ADC注入组数据。
*/

#include "debug.h"

/* Global Variable */
u32 TxBuf[1];
u16 Adc_Val[2];
u16 ADC_Val1, ADC_Val2;
u8 Injected_IT_Flag, DMA_IT_Flag;
s16 Calibrattion_Val1 = 0;
s16 Calibrattion_Val2 = 0;

/*********************************************************************
 * @fn      ADC_Function_Init
 *
 * @brief   Initializes ADC collection.
 *
 * @return  none
 */
void  ADC_Function_Init( void )
{
    ADC_InitTypeDef ADC_InitStructure = {0};
    GPIO_InitTypeDef GPIO_InitStructure = {0};
    NVIC_InitTypeDef NVIC_InitStructure = {0};

    RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA, ENABLE );
    RCC_APB2PeriphClockCmd( RCC_APB2Periph_ADC1, ENABLE );
    RCC_APB2PeriphClockCmd( RCC_APB2Periph_ADC2, ENABLE );
    RCC_ADCCLKConfig( RCC_PCLK2_Div4 );

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    GPIO_Init( GPIOA, &GPIO_InitStructure );

    NVIC_InitStructure.NVIC_IRQChannel = ADC1_2_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init( &NVIC_InitStructure );

    ADC_DeInit( ADC1 );
    ADC_DeInit( ADC2 );

    ADC_InitStructure.ADC_Mode = ADC_Mode_RegInjecSimult;
    ADC_InitStructure.ADC_ScanConvMode = DISABLE;
    ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
    ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
    ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
    ADC_InitStructure.ADC_NbrOfChannel = 1;
    ADC_InitStructure.ADC_OutputBuffer = ADC_OutputBuffer_Disable;
    ADC_InitStructure.ADC_Pga = ADC_Pga_1;

    ADC_Init( ADC1, &ADC_InitStructure );
    ADC_RegularChannelConfig( ADC1, ADC_Channel_2, 1, ADC_SampleTime_239Cycles5 );

    ADC_InjectedSequencerLengthConfig( ADC1, 1 );
    ADC_InjectedChannelConfig( ADC1, ADC_Channel_3, 1, ADC_SampleTime_239Cycles5 );

    ADC_ExternalTrigInjectedConvConfig( ADC1, ADC_ExternalTrigInjecConv_None );
    ADC_ITConfig( ADC1, ADC_IT_JEOC, ENABLE );
    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_Val1 = Get_CalibrationValue( ADC1 );

    ADC_BufferCmd( ADC1, ENABLE ); //enable buffer


    ADC_Init( ADC2, &ADC_InitStructure );
    ADC_RegularChannelConfig( ADC2, ADC_Channel_4, 1, ADC_SampleTime_239Cycles5 );

    ADC_InjectedSequencerLengthConfig( ADC2, 1 );
    ADC_InjectedChannelConfig( ADC2, ADC_Channel_5, 1, ADC_SampleTime_239Cycles5 );

    ADC_ExternalTrigInjectedConvConfig( ADC2, ADC_ExternalTrigInjecConv_None );
    ADC_SoftwareStartConvCmd( ADC2, ENABLE );
    ADC_ITConfig( ADC2, ADC_IT_JEOC, ENABLE );
    ADC_Cmd( ADC2, ENABLE );

    ADC_BufferCmd( ADC2, DISABLE ); //disable buffer
    ADC_ResetCalibration( ADC2 );
    while( ADC_GetResetCalibrationStatus( ADC2 ) );
    ADC_StartCalibration( ADC2 );
    Calibrattion_Val2 = Get_CalibrationValue( ADC2 );

    while( ADC_GetCalibrationStatus( ADC2 ) );
}

/*********************************************************************
 * @fn      DMA_Tx_Init
 *
 * @brief   Initializes the DMAy Channelx configuration.
 *
 * @param   DMA_CHx - x can be 1 to 7.
 *          ppadr - Peripheral base address.
 *          memadr - Memory base address.
 *          bufsize - DMA channel buffer size.
 *
 * @return  none
 */
void DMA_Tx_Init( DMA_Channel_TypeDef *DMA_CHx, u32 ppadr, u32 memadr, u16 bufsize )
{
    DMA_InitTypeDef DMA_InitStructure = {0};
    NVIC_InitTypeDef NVIC_InitStructure = {0};

    RCC_AHBPeriphClockCmd( RCC_AHBPeriph_DMA1, ENABLE );

    DMA_DeInit( DMA_CHx );
    DMA_InitStructure.DMA_PeripheralBaseAddr = ppadr;
    DMA_InitStructure.DMA_MemoryBaseAddr = memadr;
    DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
    DMA_InitStructure.DMA_BufferSize = bufsize;
    DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
    DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
    DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
    DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
    DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
    DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
    DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
    DMA_Init( DMA_CHx, &DMA_InitStructure );

    NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel1_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init( &NVIC_InitStructure );

    DMA_ITConfig( DMA1_Channel1, DMA_IT_TC | DMA_IT_HT | DMA_IT_TE, ENABLE );
}

/*********************************************************************
 * @fn      Get_ConversionVal1
 *
 * @brief   Get Conversion Value.
 *
 * @param   val - Sampling value
 *
 * @return  val+Calibrattion_Val - Conversion Value.
 */
u16 Get_ConversionVal1( s16 val )
{
    if( ( val + Calibrattion_Val1 ) < 0 )
    {
        return 0;
    }
    if( ( Calibrattion_Val1 + val ) > 4095 )
    {
        return 4095;
    }
    return ( val + Calibrattion_Val1 );
}

/*********************************************************************
 * @fn      Get_ConversionVal2
 *
 * @brief   Get Conversion Value.
 *
 * @param   val - Sampling value
 *
 * @return  val+Calibrattion_Val - Conversion Value.
 */
u16 Get_ConversionVal2( s16 val )
{
    if( ( val + Calibrattion_Val2 ) < 0 )
    {
        return 0;
    }
    if( ( Calibrattion_Val2 + val ) > 4095 )
    {
        return 4095;
    }
    return ( val + Calibrattion_Val2 );
}

/*********************************************************************
 * @fn      main
 *
 * @brief   Main program.
 *
 * @return  none
 */
int main( void )
{
    NVIC_PriorityGroupConfig( NVIC_PriorityGroup_4 );
    USART_Printf_Init( 115200 );
    Delay_Init();
    printf( "SystemClk:%d\r\n", SystemCoreClock );
    ADC_Function_Init();
    printf( "ADC test\r\n" );
    printf( "CalibrattionValue1:%d\n", Calibrattion_Val1 );
    printf( "CalibrattionValue2:%d\n", Calibrattion_Val2 );

    DMA_Tx_Init( DMA1_Channel1, ( u32 )&ADC1->RDATAR, ( u32 )TxBuf, 1 );
    DMA_Cmd( DMA1_Channel1, ENABLE );

    while( 1 )
    {
        ADC_SoftwareStartConvCmd( ADC1, ENABLE );
        ADC_SoftwareStartConvCmd( ADC2, ENABLE );
        ADC_SoftwareStartInjectedConvCmd( ADC1, ENABLE );
        ADC_SoftwareStartInjectedConvCmd( ADC2, ENABLE );

        if( Injected_IT_Flag == 1 )
        {
            Injected_IT_Flag = 0;
            printf( "JADC1 ch3=%04d\r\n", Get_ConversionVal1( ADC_Val1 ) );
            printf( "JADC2 ch5=%04d\r\n", Get_ConversionVal2( ADC_Val2 ) );
        }

        if( DMA_IT_Flag == 1 )
        {
            DMA_IT_Flag = 0;
            printf( "ADC1 ch2=%d\r\n", Get_ConversionVal1( Adc_Val[0] ) );
            printf( "ADC2 ch4=%d\r\n", Get_ConversionVal2( Adc_Val[1] ) );
        }
        Delay_Ms( 1000 );
    }
}


/*********************************************************************
 * @fn      ADC1_2_IRQHandler
 *
 * @brief   This function handles ADC1_2 exception.
 *
 * @return  none
 */
void ADC1_2_IRQHandler()
{
    if( ADC_GetITStatus( ADC1, ADC_IT_JEOC ) )
    {
        Injected_IT_Flag = 1;

        ADC_Val1 = ADC_GetInjectedConversionValue( ADC1, ADC_InjectedChannel_1 );
        ADC_Val2 = ADC_GetInjectedConversionValue( ADC2, ADC_InjectedChannel_1 );
    }
    ADC_ClearITPendingBit( ADC1, ADC_IT_JEOC );
    ADC_ClearITPendingBit( ADC2, ADC_IT_JEOC );
}

/*********************************************************************
 * @fn      DMA1_Channel1_IRQHandler
 *
 * @brief   This function handles DMA1 Channel1 exception.
 *
 * @return  none
 */
void DMA1_Channel1_IRQHandler()
{
    if( DMA_GetITStatus( DMA1_IT_TC1 ) == SET )
    {
        DMA_IT_Flag = 1;
        DMA_ClearITPendingBit( DMA1_IT_GL1 );

        Adc_Val[0] = TxBuf[0] & 0xffff;
        Adc_Val[1] = ( TxBuf[0] >> 16 ) & 0xffff;
    }
}





