/*****************************************************************************
 * Copyright (c) 2019, Nsing Technologies Pte. Ltd.
 *
 * All rights reserved.
 * ****************************************************************************
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the disclaimer below.
 *
 * Nations' name may not be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY NATIONS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
 * DISCLAIMED. IN NO EVENT SHALL NATIONS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * ****************************************************************************/

/**
 * @file main.c
 * @author Nations
 * @version v1.0.1
 *
 * @copyright Copyright (c) 2019, Nsing Technologies Pte. Ltd. All rights reserved.
 */
#include "main.h"

/** @addtogroup ADC_ExtLinesTrigger
 * @{
 */

ADC_InitType ADC_InitStructure;
DMA_InitType DMA_InitStructure;
__IO uint16_t ADC_RegularConvertedValueTab[64], ADC_InjectedConvertedValueTab[32];
uint32_t gCnt = 0;

void RCC_Configuration(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);
void EXTI_Configuration(void);

/**
 * @brief   Main program
 */
int main(void)
{
    /* System clocks configuration ---------------------------------------------*/
    RCC_Configuration();

    /* NVIC configuration ------------------------------------------------------*/
    NVIC_Configuration();

    /* GPIO configuration ------------------------------------------------------*/
    GPIO_Configuration();

    /* EXTI configuration ------------------------------------------------------*/
    EXTI_Configuration();

    /* DMA1 channel1 configuration ----------------------------------------------*/
    DMA_DeInit(DMA1_CH1);
    DMA_InitStructure.PeriphAddr = (uint32_t)&ADC1->DAT;
    DMA_InitStructure.MemAddr = (uint32_t)ADC_RegularConvertedValueTab;
    DMA_InitStructure.Direction = DMA_DIR_PERIPH_SRC;
    DMA_InitStructure.BufSize = 64;
    DMA_InitStructure.PeriphInc = DMA_PERIPH_INC_DISABLE;
    DMA_InitStructure.DMA_MemoryInc = DMA_MEM_INC_ENABLE;
    DMA_InitStructure.PeriphDataSize = DMA_PERIPH_DATA_SIZE_HALFWORD;
    DMA_InitStructure.MemDataSize = DMA_MemoryDataSize_HalfWord;
    DMA_InitStructure.CircularMode = DMA_MODE_CIRCULAR;
    DMA_InitStructure.Priority = DMA_PRIORITY_HIGH;
    DMA_InitStructure.Mem2Mem = DMA_M2M_DISABLE;
    DMA_Init(DMA1_CH1, &DMA_InitStructure);

    /* Enable DMA1 channel1 */
    DMA_EnableChannel(DMA1_CH1, ENABLE);

    /* ADC1 configuration ------------------------------------------------------*/
    ADC_InitStructure.WorkMode = ADC_WORKMODE_INDEPENDENT;
    ADC_InitStructure.MultiChEn = ENABLE;
    ADC_InitStructure.ContinueConvEn = DISABLE;
    ADC_InitStructure.ExtTrigSelect = ADC_EXT_TRIGCONV_EXT_INT11_TIM8_TRGO;
    ADC_InitStructure.DatAlign = ADC_DAT_ALIGN_R;
    ADC_InitStructure.ChsNumber = 2;
    ADC_Init(ADC1, &ADC_InitStructure);

    /* ADC1 regular channels configuration */
    ADC_ConfigRegularChannel(ADC1, ADC1_Channel_08_PC2, 1, ADC_SAMP_TIME_28CYCLES5);
    ADC_ConfigRegularChannel(ADC1, ADC1_Channel_09_PC3, 2, ADC_SAMP_TIME_28CYCLES5);

    /* Regular discontinuous mode channel number configuration */
    ADC_ConfigDiscModeChannelCount(ADC1, 1);
    /* Enable regular discontinuous mode */
    ADC_EnableDiscMode(ADC1, ENABLE);

    /* Enable ADC1 external trigger conversion */
    ADC_EnableExternalTrigConv(ADC1, ENABLE);

    /* Set injected sequencer length */
    ADC_ConfigInjectedSequencerLength(ADC1, 2);
    /* ADC1 injected channel configuration */
    ADC_ConfigInjectedChannel(ADC1, ADC1_Channel_01_PA0, 1, ADC_SAMP_TIME_28CYCLES5);
    ADC_ConfigInjectedChannel(ADC1, ADC1_Channel_02_PA1, 2, ADC_SAMP_TIME_28CYCLES5);
    /* ADC1 injected external trigger configuration */
    ADC_ConfigExternalTrigInjectedConv(ADC1, ADC_EXT_TRIG_INJ_CONV_EXT_INT15_TIM8_CC4);
    /* Enable ADC1 injected external trigger conversion */
    ADC_EnableExternalTrigInjectedConv(ADC1, ENABLE);

    /* Enable JEOC interrupt */
    ADC_ConfigInt(ADC1, ADC_INT_JENDC, ENABLE);

    /* Enable ADC1 DMA */
    ADC_EnableDMA(ADC1, ENABLE);

    /* Enable ADC1 */
    ADC_Enable(ADC1, ENABLE);
    /*Check ADC Ready*/
    while (ADC_GetFlagStatusNew(ADC1, ADC_FLAG_RDY) == RESET)
        ;
    /* Start ADC1 calibration */
    ADC_StartCalibration(ADC1);
    /* Check the end of ADC1 calibration */
    while (ADC_GetCalibrationStatus(ADC1))
        ;

    while (1)
    {
        gCnt++;
    }
}

/**
 * @brief  Configures the different system clocks.
 */
void RCC_Configuration(void)
{
    /* Enable peripheral clocks ------------------------------------------------*/
    /* Enable DMA1 and DMA2 clocks */
    RCC_EnableAHBPeriphClk(RCC_AHB_PERIPH_DMA1 | RCC_AHB_PERIPH_DMA2, ENABLE);

    /* Enable GPIOC clocks */
    RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOA | RCC_APB2_PERIPH_GPIOB | RCC_APB2_PERIPH_GPIOC | RCC_APB2_PERIPH_GPIOE | RCC_APB2_PERIPH_AFIO,
                            ENABLE);
    /* Enable ADC1, ADC2, ADC3 and ADC4 clocks */
    RCC_EnableAHBPeriphClk(RCC_AHB_PERIPH_ADC1 | RCC_AHB_PERIPH_ADC2 | RCC_AHB_PERIPH_ADC3 | RCC_AHB_PERIPH_ADC4,
                           ENABLE);

    /* RCC_ADCHCLK_DIV16*/
    ADC_ConfigClk(ADC_CTRL3_CKMOD_AHB, RCC_ADCHCLK_DIV16);
    RCC_ConfigAdc1mClk(RCC_ADC1MCLK_SRC_HSE, RCC_ADC1MCLK_DIV8); // selsect HSE as RCC ADC1M CLK Source
}

/**
 * @brief  Configures the different EXTI lines.
 */
void EXTI_Configuration(void)
{
    EXTI_InitType EXTI_InitStructure;

    GPIO_ConfigEXTILine(GPIOE_PORT_SOURCE, GPIO_PIN_SOURCE11);
    /* EXTI line11 configuration -----------------------------------------------*/
    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Event;
    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
    EXTI_InitStructure.EXTI_Line = EXTI_LINE11;
    EXTI_InitStructure.EXTI_LineCmd = ENABLE;
    EXTI_InitPeripheral(&EXTI_InitStructure);

    /* Select the EXTI Line15 the GPIO pin source */
    GPIO_ConfigEXTILine(GPIOE_PORT_SOURCE, GPIO_PIN_SOURCE15);
    /* EXTI line15 configuration -----------------------------------------------*/
    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Event;
    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
    EXTI_InitStructure.EXTI_Line = EXTI_LINE15;
    EXTI_InitStructure.EXTI_LineCmd = ENABLE;
    EXTI_InitPeripheral(&EXTI_InitStructure);
}

/**
 * @brief  Configures the different GPIO ports.
 */
void GPIO_Configuration(void)
{
    GPIO_InitType GPIO_InitStructure;

    /* Configure PC.02 and PC.03  as analog input ------------------------------*/
    GPIO_InitStructure.Pin = GPIO_PIN_2 | GPIO_PIN_3;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    GPIO_InitPeripheral(GPIOC, &GPIO_InitStructure);
    /* Configure PA.00 and PA.01 as analog input --------------------------*/
    GPIO_InitStructure.Pin = GPIO_PIN_0 | GPIO_PIN_1;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    GPIO_InitPeripheral(GPIOA, &GPIO_InitStructure);

    /* Configure EXTI line11 ---------------------------------------------------*/
    GPIO_InitStructure.Pin = GPIO_PIN_11;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_InitPeripheral(GPIOE, &GPIO_InitStructure);
    /* Configure EXTI line15 ---------------------------------------------------*/
    GPIO_InitStructure.Pin = GPIO_PIN_15;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_InitPeripheral(GPIOE, &GPIO_InitStructure);
}

/**
 * @brief  Configures NVIC and Vector Table base location.
 */
void NVIC_Configuration(void)
{
    NVIC_InitType NVIC_InitStructure;

    /* Configure and enable ADC interrupt */
    NVIC_InitStructure.NVIC_IRQChannel = ADC1_2_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
}

#ifdef USE_FULL_ASSERT

/**
 * @brief  Reports the name of the source file and the source line number
 *         where the assert_param error has occurred.
 * @param file pointer to the source file name
 * @param line assert_param error line source number
 */
void assert_failed(const uint8_t *expr, const uint8_t *file, uint32_t line)
{
    /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

    /* Infinite loop */
    while (1)
    {
    }
}

#endif

/**
 * @}
 */

/**
 * @}
 */
