2019 8 8 STM32F407DAC DMA通道生成周期1msSIN波（1um一个点）相关配置

还没有生成COS，需要另一个定时器进行触发，注释代码不能用  

　1 #include "STM32_WaveOutput.h"    
#include "delay.h"    
/********Éú³ÉÕýÏÒ²¨ÐÎ1Êä³ö±í***********/

u16 SineWave_Value[1000];    
//u16 CosWave_Value[1000];    

void SineWave_Data()
{
//void sin_Generation(void)
//{
    u16 n;
    for(n=0;n<1000;n++)
    {
//        SineWave_Value[n] = (sin(2*PI*n/1000)+1)*2047;    
//        SineWave_Value[n] = n*2;
        SineWave_Value[n] = (u16)((Um*sin(( 1.0*n/(1000))*2*PI)+Um)*4095/3.3);
//        CosWave_Value[n] = (u16)((Um*sin(( 1.0*n/(1000))*2*PI+PI/2)+Um)*4095/3.3);
    }    
//}
}

//void gpio_init()        //PA4
//{
//    GPIO_InitTypeDef  GPIO_InitStructure;
//    
//  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);//ʹÄÜGPIOAʱÖÓ
////  RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);//ʹÄÜDACʱÖÓ             
//            
//  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
//  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;//Ä£Äâ
//  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;//ÏÂÀ­
////    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
//  GPIO_Init(GPIOA, &GPIO_InitStructure);//³õʼ»¯     
//}

void tim2_init()
{
    TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
    
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2,ENABLE);  ///ʹÄÜTIM3ʱÖÓ
    
  TIM_TimeBaseInitStructure.TIM_Period = 84;     //×Ô¶¯ÖØ×°ÔØÖµ
    TIM_TimeBaseInitStructure.TIM_Prescaler=0;  //¶¨Ê±Æ÷·ÖƵ
    TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_Up; //ÏòÉϼÆÊýģʽ
    TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1; 
    
    TIM_TimeBaseInit(TIM2,&TIM_TimeBaseInitStructure);//³õʼ»¯TIM3

    TIM2->CR2 &= (u16)~((u16)0x0070);//ÉèÖÃTIM2Êä³ö´¥·¢Îª¸üÐÂģʽ
    TIM2->CR2 |=0x0020;//触发更新模式
//    TIM_SelectOutputTrigger(TIM2,TIM_TRGOSource_Update);
    
    TIM_Cmd(TIM2,ENABLE); //ʹÄܶ¨Ê±Æ÷2
//    
//    NVIC_InitStructure.NVIC_IRQChannel=TIM3_IRQn; //¶¨Ê±Æ÷3ÖжÏ
//    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0x01; //ÇÀÕ¼ÓÅÏȼ¶1
//    NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x01; //×ÓÓÅÏȼ¶1
//    NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
//    NVIC_Init(&NVIC_InitStructure);    
}

void dma_init()
{
        DMA_InitTypeDef            DMA_InitStructure;
//    RCC->AHBENR|=1<<1;            //¿ªÆôDMA2ʱÖÓ
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1,ENABLE);//DMA1ʱÖÓʹÄÜ 
    delay_ms(5);                //µÈ´ýDMAʱÖÓÎȶ¨
    
    DMA_DeInit(DMA1_Stream5);
//    DMA_DeInit(DMA1_Stream6);
    DMA_Cmd(DMA1_Stream5, DISABLE);    
//    
//    while (DMA_GetCmdStatus(DMA_Streamx) != DISABLE){}//µÈ´ýDMA¿ÉÅäÖà 
    
  /* ÅäÖÃ DMA Stream */
  DMA_InitStructure.DMA_Channel = DMA_Channel_7;  //通道选择
  DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)&(DAC->DHR12R1);//DMA外设地址
  DMA_InitStructure.DMA_Memory0BaseAddr = (u32)SineWave_Value;//DMA内存地址
  DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;//方向
  DMA_InitStructure.DMA_BufferSize = 1000;//数据量
  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;//外设非增量
  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;//内存增量
  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;//外设数据长度：16
  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;//存储器数据长度：16
  DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;//循环模式
  DMA_InitStructure.DMA_Priority = DMA_Priority_High;//高优先级
//  DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;         
//  DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
//  DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;//´æ´¢Æ÷Í»·¢µ¥´Î´«Êä
//  DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;//ÍâÉèÍ»·¢µ¥´Î´«Êä
  DMA_Init(DMA1_Stream5, &DMA_InitStructure);// 93     
//  DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)&(DAC->DHR12R2);//DMAÍâÉèµØÖ·
//  DMA_InitStructure.DMA_Memory0BaseAddr = (u32)CosWave_Value;//DMA ´æ´¢Æ÷0µØÖ·    
//    DMA_Init(DMA1_Stream6, &DMA_InitStructure);//³õʼ»¯DMA Stream    
    
}

void dAC_Init()
{
    
  GPIO_InitTypeDef  GPIO_InitStructure;
    DAC_InitTypeDef DAC_InitType;
    
  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);//ʹÄÜGPIOAʱÖÓ
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);//ʹÄÜDACʱÖÓ
    
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;       
//  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4|GPIO_Pin_5;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;//Ä£ÄâÊäÈë
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;//ÏÂÀ­
  GPIO_Init(GPIOA, &GPIO_InitStructure);//³õʼ»¯

    DAC_InitType.DAC_Trigger=DAC_Trigger_T2_TRGO;    //定时器2进行触发
    DAC_InitType.DAC_WaveGeneration=DAC_WaveGeneration_None;//不使用波形发生
    DAC_InitType.DAC_LFSRUnmask_TriangleAmplitude=DAC_LFSRUnmask_Bit0;//
    DAC_InitType.DAC_OutputBuffer=DAC_OutputBuffer_Disable ;    //DAC1输出缓存关闭BOFF1=1
    
  DAC_Init(DAC_Channel_1,&DAC_InitType);     //³õʼ»¯DACͨµÀ1
//    DAC_Init(DAC_Channel_2,&DAC_InitType);     //³õʼ»¯DACͨµÀ2

    
    
//    DAC_InitTypeDef   DAC_InitStructure;
//    RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);
// 
//    DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None;
//    DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Disable; 
//    DAC_InitStructure.DAC_Trigger = DAC_Trigger_T2_TRGO;
////        DAC_InitStructure.DAC_LFSRUnmask_TriangleAmplitude
//    DAC_Init(DAC_Channel_1, &DAC_InitStructure);
//    
//    DAC_Cmd(DAC_Channel_1, ENABLE);   
//    DAC_DMACmd(DAC_Channel_1, ENABLE);    
}


void SineWave_Init()
{
    SineWave_Data();
//    gpio_init();
    tim2_init();
    dma_init();
    dAC_Init();
    
    DAC_Cmd(DAC_Channel_1, ENABLE);  //ʹÄÜDACͨµÀ1     
//    DAC_Cmd(DAC_Channel_2, ENABLE);  //ʹÄÜDACͨµÀ1 
  DAC_DMACmd(DAC_Channel_1, ENABLE);    
//    DAC_DMACmd(DAC_Channel_2, ENABLE);    
    DMA_Cmd(DMA1_Stream5, ENABLE);
//    DMA_Cmd(DMA1_Stream6, ENABLE);
}


//#define DAC_DHR12R1_ADDRESS    (u32)(DAC->DHR12R1) 0x40007408


//#define DAC_DHR12R1_ADDRESS    (u32)(DAC->DHR12R1)

//u16 sinTable[tableSize];

//void sin_Generation(void)
//{
//    u16 n;
//    for(n=0;n<tableSize;n++)
//    {
//        sinTable[n] = (sin(2*PI*n/tableSize)+1)*2047;    
//    }    
//}

//void TIM6_Configuration(void)
//{
//    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM6, ENABLE);    

//     TIM_PrescalerConfig(TIM6, 0x0, TIM_PSCReloadMode_Update);
//      TIM_SetAutoreload(TIM6, 0x1);
//      TIM_SelectOutputTrigger(TIM6, TIM_TRGOSource_Update);
//    TIM_Cmd(TIM6, ENABLE);
//}

//void GPIO_Configuration(void)
//{
//    GPIO_InitTypeDef GPIO_InitStructure;

//      RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);

//    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
//    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
//    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
//    GPIO_Init(GPIOA, &GPIO_InitStructure);
//}

//void DAC_DMA_Configuration(void)
//{
//    DAC_InitTypeDef  DAC_InitStructure;    

//    DMA_InitTypeDef DMA_InitStructure;

//    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1, ENABLE);
//    
//    RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);

//    DAC_InitStructure.DAC_Trigger = DAC_Trigger_T6_TRGO;
//    DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None;
//    DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Disable;
//    DAC_Init(DAC_Channel_1, &DAC_InitStructure);

//    DMA_DeInit(DMA1_Stream5);
//    DMA_InitStructure.DMA_Channel = DMA_Channel_7;  
//    DMA_InitStructure.DMA_PeripheralBaseAddr = DAC_DHR12R1_ADDRESS;
//    DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)&sinTable;
//    DMA_InitStructure.DMA_BufferSize = tableSize;
//    DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
//    DMA_InitStructure.DMA_MemoryDataSize = DMA_PeripheralDataSize_HalfWord;
//    DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
//    DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
//    DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
//    DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
//    DMA_InitStructure.DMA_Priority = DMA_Priority_High;
//    DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;         
//    DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull;
//    DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
//    DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
//    DMA_Init(DMA1_Stream5, &DMA_InitStructure);    
//    
//    DMA_Cmd(DMA1_Stream5, ENABLE);
//    
//    DAC_Cmd(DAC_Channel_1, ENABLE);
//    
//    DAC_DMACmd(DAC_Channel_1, ENABLE);
//}