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"    
  2 #include "delay.h"    
  3 /********Éú³ÉÕýÏÒ²¨ÐÎ1Êä³ö±í***********/
  4 
  5 u16 SineWave_Value[1000];    
  6 //u16 CosWave_Value[1000];    
  7 
  8 void SineWave_Data()
  9 {
 10 //void sin_Generation(void)
 11 //{
 12     u16 n;
 13     for(n=0;n<1000;n++)
 14     {
 15 //        SineWave_Value[n] = (sin(2*PI*n/1000)+1)*2047;    
 16 //        SineWave_Value[n] = n*2;
 17         SineWave_Value[n] = (u16)((Um*sin(( 1.0*n/(1000))*2*PI)+Um)*4095/3.3);
 18 //        CosWave_Value[n] = (u16)((Um*sin(( 1.0*n/(1000))*2*PI+PI/2)+Um)*4095/3.3);
 19     }    
 20 //}
 21 }
 22 
 23 //void gpio_init()        //PA4
 24 //{
 25 //    GPIO_InitTypeDef  GPIO_InitStructure;
 26 //    
 27 //  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);//ʹÄÜGPIOAʱÖÓ
 28 ////  RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);//ʹÄÜDACʱÖÓ             
 29 //            
 30 //  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
 31 //  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;//Ä£Äâ
 32 //  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;//ÏÂÀ­
 33 ////    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
 34 //  GPIO_Init(GPIOA, &GPIO_InitStructure);//³õʼ»¯     
 35 //}
 36 
 37 void tim2_init()
 38 {
 39     TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
 40     
 41     RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2,ENABLE);  ///ʹÄÜTIM3ʱÖÓ
 42     
 43   TIM_TimeBaseInitStructure.TIM_Period = 84;     //×Ô¶¯ÖØ×°ÔØÖµ
 44     TIM_TimeBaseInitStructure.TIM_Prescaler=0;  //¶¨Ê±Æ÷·ÖƵ
 45     TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_Up; //ÏòÉϼÆÊýģʽ
 46     TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1; 
 47     
 48     TIM_TimeBaseInit(TIM2,&TIM_TimeBaseInitStructure);//³õʼ»¯TIM3
 49 
 50     TIM2->CR2 &= (u16)~((u16)0x0070);//ÉèÖÃTIM2Êä³ö´¥·¢Îª¸üÐÂģʽ
 51     TIM2->CR2 |=0x0020;//触发更新模式
 52 //    TIM_SelectOutputTrigger(TIM2,TIM_TRGOSource_Update);
 53     
 54     TIM_Cmd(TIM2,ENABLE); //ʹÄܶ¨Ê±Æ÷2
 55 //    
 56 //    NVIC_InitStructure.NVIC_IRQChannel=TIM3_IRQn; //¶¨Ê±Æ÷3ÖжÏ
 57 //    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0x01; //ÇÀÕ¼ÓÅÏȼ¶1
 58 //    NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x01; //×ÓÓÅÏȼ¶1
 59 //    NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
 60 //    NVIC_Init(&NVIC_InitStructure);    
 61 }
 62 
 63 void dma_init()
 64 {
 65         DMA_InitTypeDef            DMA_InitStructure;
 66 //    RCC->AHBENR|=1<<1;            //¿ªÆôDMA2ʱÖÓ
 67     RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1,ENABLE);//DMA1ʱÖÓʹÄÜ 
 68     delay_ms(5);                //µÈ´ýDMAʱÖÓÎȶ¨
 69     
 70     DMA_DeInit(DMA1_Stream5);
 71 //    DMA_DeInit(DMA1_Stream6);
 72     DMA_Cmd(DMA1_Stream5, DISABLE);    
 73 //    
 74 //    while (DMA_GetCmdStatus(DMA_Streamx) != DISABLE){}//µÈ´ýDMA¿ÉÅäÖà 
 75     
 76   /* ÅäÖÃ DMA Stream */
 77   DMA_InitStructure.DMA_Channel = DMA_Channel_7;  //通道选择
 78   DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)&(DAC->DHR12R1);//DMA外设地址
 79   DMA_InitStructure.DMA_Memory0BaseAddr = (u32)SineWave_Value;//DMA内存地址
 80   DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;//方向
 81   DMA_InitStructure.DMA_BufferSize = 1000;//数据量
 82   DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;//外设非增量
 83   DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;//内存增量
 84   DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;//外设数据长度：16
 85   DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;//存储器数据长度：16
 86   DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;//循环模式
 87   DMA_InitStructure.DMA_Priority = DMA_Priority_High;//高优先级
 88 //  DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;         
 89 //  DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
 90 //  DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;//´æ´¢Æ÷Í»·¢µ¥´Î´«Êä
 91 //  DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;//ÍâÉèÍ»·¢µ¥´Î´«Êä
 92   DMA_Init(DMA1_Stream5, &DMA_InitStructure);// 93     
 94 //  DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)&(DAC->DHR12R2);//DMAÍâÉèµØÖ·
 95 //  DMA_InitStructure.DMA_Memory0BaseAddr = (u32)CosWave_Value;//DMA ´æ´¢Æ÷0µØÖ·    
 96 //    DMA_Init(DMA1_Stream6, &DMA_InitStructure);//³õʼ»¯DMA Stream    
 97     
 98 }
 99 
100 void dAC_Init()
101 {
102     
103   GPIO_InitTypeDef  GPIO_InitStructure;
104     DAC_InitTypeDef DAC_InitType;
105     
106   RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);//ʹÄÜGPIOAʱÖÓ
107   RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);//ʹÄÜDACʱÖÓ
108     
109     GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;       
110 //  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4|GPIO_Pin_5;
111   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;//Ä£ÄâÊäÈë
112   GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;//ÏÂÀ­
113   GPIO_Init(GPIOA, &GPIO_InitStructure);//³õʼ»¯
114 
115     DAC_InitType.DAC_Trigger=DAC_Trigger_T2_TRGO;    //定时器2进行触发
116     DAC_InitType.DAC_WaveGeneration=DAC_WaveGeneration_None;//不使用波形发生
117     DAC_InitType.DAC_LFSRUnmask_TriangleAmplitude=DAC_LFSRUnmask_Bit0;//
118     DAC_InitType.DAC_OutputBuffer=DAC_OutputBuffer_Disable ;    //DAC1输出缓存关闭BOFF1=1
119     
120   DAC_Init(DAC_Channel_1,&DAC_InitType);     //³õʼ»¯DACͨµÀ1
121 //    DAC_Init(DAC_Channel_2,&DAC_InitType);     //³õʼ»¯DACͨµÀ2
122 
123     
124     
125 //    DAC_InitTypeDef   DAC_InitStructure;
126 //    RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);
127 // 
128 //    DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None;
129 //    DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Disable; 
130 //    DAC_InitStructure.DAC_Trigger = DAC_Trigger_T2_TRGO;
131 ////        DAC_InitStructure.DAC_LFSRUnmask_TriangleAmplitude
132 //    DAC_Init(DAC_Channel_1, &DAC_InitStructure);
133 //    
134 //    DAC_Cmd(DAC_Channel_1, ENABLE);   
135 //    DAC_DMACmd(DAC_Channel_1, ENABLE);    
136 }
137 
138 
139 void SineWave_Init()
140 {
141     SineWave_Data();
142 //    gpio_init();
143     tim2_init();
144     dma_init();
145     dAC_Init();
146     
147     DAC_Cmd(DAC_Channel_1, ENABLE);  //ʹÄÜDACͨµÀ1     
148 //    DAC_Cmd(DAC_Channel_2, ENABLE);  //ʹÄÜDACͨµÀ1 
149   DAC_DMACmd(DAC_Channel_1, ENABLE);    
150 //    DAC_DMACmd(DAC_Channel_2, ENABLE);    
151     DMA_Cmd(DMA1_Stream5, ENABLE);
152 //    DMA_Cmd(DMA1_Stream6, ENABLE);
153 }
154 
155 
156 //#define DAC_DHR12R1_ADDRESS    (u32)(DAC->DHR12R1) 0x40007408
157 
158 
159 //#define DAC_DHR12R1_ADDRESS    (u32)(DAC->DHR12R1)
160 
161 //u16 sinTable[tableSize];
162 
163 //void sin_Generation(void)
164 //{
165 //    u16 n;
166 //    for(n=0;n<tableSize;n++)
167 //    {
168 //        sinTable[n] = (sin(2*PI*n/tableSize)+1)*2047;    
169 //    }    
170 //}
171 
172 //void TIM6_Configuration(void)
173 //{
174 //    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM6, ENABLE);    
175 
176 //     TIM_PrescalerConfig(TIM6, 0x0, TIM_PSCReloadMode_Update);
177 //      TIM_SetAutoreload(TIM6, 0x1);
178 //      TIM_SelectOutputTrigger(TIM6, TIM_TRGOSource_Update);
179 //    TIM_Cmd(TIM6, ENABLE);
180 //}
181 
182 //void GPIO_Configuration(void)
183 //{
184 //    GPIO_InitTypeDef GPIO_InitStructure;
185 
186 //      RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
187 
188 //    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
189 //    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
190 //    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
191 //    GPIO_Init(GPIOA, &GPIO_InitStructure);
192 //}
193 
194 //void DAC_DMA_Configuration(void)
195 //{
196 //    DAC_InitTypeDef  DAC_InitStructure;    
197 
198 //    DMA_InitTypeDef DMA_InitStructure;
199 
200 //    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1, ENABLE);
201 //    
202 //    RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);
203 
204 //    DAC_InitStructure.DAC_Trigger = DAC_Trigger_T6_TRGO;
205 //    DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None;
206 //    DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Disable;
207 //    DAC_Init(DAC_Channel_1, &DAC_InitStructure);
208 
209 //    DMA_DeInit(DMA1_Stream5);
210 //    DMA_InitStructure.DMA_Channel = DMA_Channel_7;  
211 //    DMA_InitStructure.DMA_PeripheralBaseAddr = DAC_DHR12R1_ADDRESS;
212 //    DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)&sinTable;
213 //    DMA_InitStructure.DMA_BufferSize = tableSize;
214 //    DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
215 //    DMA_InitStructure.DMA_MemoryDataSize = DMA_PeripheralDataSize_HalfWord;
216 //    DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
217 //    DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
218 //    DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
219 //    DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
220 //    DMA_InitStructure.DMA_Priority = DMA_Priority_High;
221 //    DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;         
222 //    DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull;
223 //    DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
224 //    DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
225 //    DMA_Init(DMA1_Stream5, &DMA_InitStructure);    
226 //    
227 //    DMA_Cmd(DMA1_Stream5, ENABLE);
228 //    
229 //    DAC_Cmd(DAC_Channel_1, ENABLE);
230 //    
231 //    DAC_DMACmd(DAC_Channel_1, ENABLE);
232 //}

 

posted @ 2019-08-17 18:34  一本正经小虫子  阅读(821)  评论(0)  编辑  收藏  举报