/********************************** (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DAC输出正弦波例程：
 DAC分别从PA4和PA5输出
  输出两路完全相同的正弦波
*/

#include "debug.h"

/* Global define */
#define Num 64

/* Global Variable */
uint32_t DAC_Value[Num] = {2048, 2248, 2447, 2642, 2831, 3013, 3185, 3347, 3496, 3631, 3750, 3854, 3940, 4007, 4056, 4086,
                           4095, 4086, 4056, 4007, 3940, 3854, 3750, 3631, 3496, 3347, 3185, 3013, 2831, 2642, 2447, 2248,
                           2048, 1847, 1648, 1453, 1264, 1082, 910, 748, 599, 464, 345, 241, 155, 88, 39, 9,
                           0, 9, 39, 88, 155, 241, 345, 464, 599, 748, 910, 1082, 1264, 1453, 1648, 1847
                          };

uint32_t Dual_DAC_Value[Num];


/*********************************************************************
 * @fn      Dac_Init
 *
 * @brief   Initializes DAC collection.
 *
 * @return  none
 */
void Dual_Dac_Init( void )
{
    GPIO_InitTypeDef GPIO_InitStructure = {0};
    DAC_InitTypeDef DAC_InitType = {0};

    RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA, ENABLE );
    RCC_APB1PeriphClockCmd( RCC_APB1Periph_DAC, ENABLE );

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init( GPIOA, &GPIO_InitStructure );
    GPIO_SetBits( GPIOA, GPIO_Pin_4 );

    DAC_InitType.DAC_Trigger = DAC_Trigger_T4_TRGO;
    DAC_InitType.DAC_WaveGeneration = DAC_WaveGeneration_None;
    DAC_InitType.DAC_LFSRUnmask_TriangleAmplitude = DAC_LFSRUnmask_Bit0;
    DAC_InitType.DAC_OutputBuffer = DAC_OutputBuffer_Disable ;
    DAC_Init( DAC_Channel_1, &DAC_InitType );
    DAC_Init( DAC_Channel_2, &DAC_InitType );

    DAC_Cmd( DAC_Channel_1, ENABLE );
    DAC_Cmd( DAC_Channel_2, ENABLE );

    DAC_DMACmd( DAC_Channel_1, ENABLE );
    DAC_DMACmd( DAC_Channel_2, ENABLE );

    DAC_SetDualChannelData( DAC_Align_12b_R, 0x123, 0x321 );
}

/*********************************************************************
 * @fn      DAC1_DMA_INIT
 *
 * @brief   Initializes DMA of DAC1 collection.
 *
 * @return  none
 */
void Dac_Dma_Init( void )
{
    DMA_InitTypeDef DMA_InitStructure = {0};
    RCC_AHBPeriphClockCmd( RCC_AHBPeriph_DMA2, ENABLE );

    DMA_StructInit( &DMA_InitStructure );
    DMA_InitStructure.DMA_PeripheralBaseAddr = ( uint32_t ) & ( DAC->RD12BDHR );
    DMA_InitStructure.DMA_MemoryBaseAddr = ( uint32_t )&Dual_DAC_Value[0];
    DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
    DMA_InitStructure.DMA_BufferSize = Num;
    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( DMA2_Channel3, &DMA_InitStructure );
    DMA_Cmd( DMA2_Channel3, ENABLE );
}

/*********************************************************************
 * @fn      Timer4_Init
 *
 * @brief   Initializes TIM4
 *
 * @return  none
 */
void Timer4_Init( void )
{
    TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure = {0};
    RCC_APB1PeriphClockCmd( RCC_APB1Periph_TIM4, ENABLE );

    TIM_TimeBaseStructInit( &TIM_TimeBaseStructure );
    TIM_TimeBaseStructure.TIM_Period = 3600 - 1;
    TIM_TimeBaseStructure.TIM_Prescaler = 0;
    TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBaseInit( TIM4, &TIM_TimeBaseStructure );

    TIM_SelectOutputTrigger( TIM4, TIM_TRGOSource_Update );
    TIM_Cmd( TIM4, ENABLE );
}

/*********************************************************************
 * @fn      main
 *
 * @brief   Main program.
 *
 * @return  none
 */
int main( void )
{
    uint8_t i = 0;
    Delay_Init();
    USART_Printf_Init( 115200 );
    printf( "SystemClk:%d\r\n", SystemCoreClock );
    printf( "Dual DAC Generation Test\r\n" );
    for( i = 0; i < Num; i++ ) {
        Dual_DAC_Value[i] = ( DAC_Value[i] << 16 ) + DAC_Value[i];
        printf( "0x%08x\r\n", Dual_DAC_Value[i] );
    }

    Dual_Dac_Init();
    Dac_Dma_Init();
    Timer4_Init();
    while( 1 )
    {
        printf( "CNT=%d\r\n", TIM4->CNT );
        printf( "RD12BDHR=0x%04x\r\n", DAC->RD12BDHR );
        printf( "DOR1=0x%04x\r\n", DAC->DOR1 );
        printf( "DOR2=0x%04x\r\n", DAC->DOR2 );
        Delay_Ms( 500 );
    }
}

