/********************************** (C) COPYRIGHT *******************************
 * File Name          : main.c
 * Author             : WCH
 * Version            : V1.0.0
 * Date               : 2021/06/06
 * Description        : Main program body.
 *********************************************************************************
 * Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
 * Attention: This software (modified or not) and binary are used for 
 * microcontroller manufactured by Nanjing Qinheng Microelectronics.
 *******************************************************************************/

/*
 *@Note
 *Dual ADC injection simultaneous sampling routine:
 *ADC1 channel 1 (PA1), ADC2 channel 2 (PA3).
 *
 *Note:only applied to CH32V20x_D6
 */

#include "debug.h"

/* Global Variable */
vu16 ADC_val1, ADC_val2;
vs16 Calibrattion_Val1 = 0;
vs16 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};

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC2, ENABLE);
    RCC_ADCCLKConfig(RCC_PCLK2_Div8);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_3;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    ADC_DeInit(ADC1);
    ADC_DeInit(ADC2);

    ADC_InitStructure.ADC_Mode = ADC_Mode_InjecSimult;
    ADC_InitStructure.ADC_ScanConvMode = DISABLE;
    ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
    ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigInjecConv_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_InjectedSequencerLengthConfig(ADC1, 1);
    ADC_InjectedChannelConfig(ADC1, ADC_Channel_1, 1, ADC_SampleTime_239Cycles5);

    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_Init(ADC2, &ADC_InitStructure);
    ADC_InjectedSequencerLengthConfig(ADC2, 1);
    ADC_InjectedChannelConfig(ADC2, ADC_Channel_3, 1, ADC_SampleTime_239Cycles5);

    ADC_SoftwareStartInjectedConvCmd(ADC2, ENABLE);
    ADC_Cmd(ADC2, ENABLE);

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

}

/*********************************************************************
 * @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|| val==0)
        return 0;
    if((Calibrattion_Val1 + val) > 4095|| 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)
{
    USART_Printf_Init(115200);
    SystemCoreClockUpdate();
    Delay_Init();
    printf("SystemClk:%d\r\n", SystemCoreClock);
    printf( "ChipID:%08x\r\n", DBGMCU_GetCHIPID() );
    ADC_Function_Init();
    printf("CalibrattionValue1:%d\n", Calibrattion_Val1);
    printf("CalibrattionValue2:%d\n", Calibrattion_Val2);

    while(1)
    {
        ADC_SoftwareStartInjectedConvCmd(ADC1, ENABLE);
        Delay_Ms(100);

        ADC_SoftwareStartInjectedConvCmd(ADC1, DISABLE);
        Delay_Ms(100);

        while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_JEOC));
        ADC_val1 = ADC_GetInjectedConversionValue(ADC1, ADC_InjectedChannel_1);
        ADC_val2 = ADC_GetInjectedConversionValue(ADC2, ADC_InjectedChannel_1);

        printf("JADC1 ch2=%04d\r\n", Get_ConversionVal1(ADC_val1));
        printf("JADC2 ch3=%04d\r\n", Get_ConversionVal2(ADC_val2));
    }
}