ST32 M3 DMA ADC Transfer to Buffer

#define ADC1_DR_addr    ((u32)0x4001244C) //AD轉換結果存放位址定義

void DMA_ADC_Transfer_Reset(void){

    //開始DMA傳輸

     DMA_Channel1->CCR &= ~(1<<0 span="">禁用DMA_Channel,EN是CCR1寄存器的0位

     DMA->IFCR |= 0x0000000F;//清除CHANNEL1的4個標誌

     DMA_Channel1->CNDTR = (u16)SampleDepth;//重新設置要設置的DMA傳輸資料量

     DMA_Channel1->CCR |= (1<<0 span="">重新使能DMA_channel1

     while(!(DMA->ISR & DMA_FLAG_TC1));

     DMA_Channel1->CCR &= ~(1<<0 span="">禁用DMA_Channel,EN是CCR1寄存器的0位

}

void DMA_ADC_Transfer_Init(void){

DMA_InitTypeDef         DMA_InitStructure;

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE); 

  DMA_DeInit(DMA_Channel1);

  DMA_InitStructure.DMA_PeripheralBaseAddr = ADC_DR_Address;//ADC資料寄存器位址

  DMA_InitStructure.DMA_MemoryBaseAddr = (u32 )Data_Buffer[0];//目標緩衝區位址

  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;//外設是源

  DMA_InitStructure.DMA_BufferSize = 0;//設置DMA讀取長度為0 啟動前再重設

  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;//外設地址不遞增

  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;//目標緩衝區位址遞增

  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;//外設資料寬度 32bit

  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;//目標緩衝區資料寬度32bit

  DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;//DMA模式：Circular迴圈模式/Normal普通模式

  DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;//優先順序

  DMA_InitStructure.DMA_M2M = DMA_M2M_Enable;//記憶體到記憶體模式使能

  DMA_Init(DMA_Channel1, &DMA_InitStructure);  

  //DMA_Cmd(DMA_Channel1, ENABLE);//實作時再啟動

}

void ADC_Initial(void){

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB| RCC_APB2Periph_GPIOC |RCC_APB2Periph_ADC1, ENABLE );   //使能ADC通道時鐘

ADC_InitTypeDef        ADC_InitStructure;

  ADC_InitStructure.ADC_Mode = ADC_Mode_RegSimult;//ADC1/ADC2同時並行採樣模式

  ADC_InitStructure.ADC_ScanConvMode = DISABLE;//多通道掃描模式

  ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;//單次轉換模式(轉換後即停止)

  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T2_CC2;//觸發模式

  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;//數據右對齊

  ADC_InitStructure.ADC_NbrOfChannel = 1;

  ADC_Init(ADC1 , &ADC_InitStructure);

  ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 1, ADC_SampleTime_1Cycles5);

  ADC_DMACmd(ADC1, ENABLE); 

 ADC_InitStructure.ADC_Mode = ADC_Mode_RegSimult;

  ADC_InitStructure.ADC_ScanConvMode = DISABLE;

  ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;

  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T2_CC2;

  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;

  ADC_InitStructure.ADC_NbrOfChannel = 1;

  ADC_Init(ADC2, &ADC_InitStructure);

  ADC_RegularChannelConfig(ADC2, ADC_Channel_11, 1, ADC_SampleTime_1Cycles5);

  ADC_ExternalTrigConvCmd(ADC2, ENABLE);

  ADC_Cmd(ADC1, ENABLE);

  ADC_ResetCalibration(ADC1); 

  while(ADC_GetResetCalibrationStatus(ADC1));

  ADC_StartCalibration(ADC1);

  while(ADC_GetCalibrationStatus(ADC1));

  ADC_Cmd(ADC2, ENABLE);

  ADC_ResetCalibration(ADC2);

  while(ADC_GetResetCalibrationStatus(ADC2));

  ADC_StartCalibration(ADC2);

  while(ADC_GetCalibrationStatus(ADC2));

  //while(!DMA_GetFlagStatus(DMA_FLAG_TC1));

  //DMA_ClearFlag(DMA_FLAG_TC1); 

    ADC_ExternalTrigConvCmd( ADC1, ENABLE);

}

void ADC_Sample_Frequency_Set(u32 Frequency){

   TIM_OCInitTypeDef        TIM_OCInitStructure;

   TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure; 

   RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE );

   TIM_Cmd(TIM2, DISABLE);//先停止TIM2時鐘，以準備下的設置

 TIM_TimeBaseStructure.TIM_Period = 35; //APR寄存器         

  TIM_TimeBaseStructure.TIM_Prescaler = 1000000/Frequency-1; //預分頻值，用來調整頻率，分頻係數=1000khz/(prescaler+1)     

  TIM_TimeBaseStructure.TIM_ClockDivision = 0;    

  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; 

  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1 ;//TIM_OCMode_Toggle,TIM_OCMode_PWM1 

TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;                

TIM_OCInitStructure.TIM_Pulse = TIM_TimeBaseStructure.TIM_Period; //CCR2寄存器

TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;         

TIM_OC2Init(TIM2, &TIM_OCInitStructure);

  TIM_Cmd(TIM2, ENABLE); 

  TIM_CtrlPWMOutputs(TIM2, ENABLE); 

}

1. /******************************************************************************/   
2. /* SETUP.C: Setup Functions                                                   */   
3. /******************************************************************************/   
4. /* This file is part of the uVision/ARM development tools.                    */   
5. /* Copyright (c) 2005-2007 Keil Software. All rights reserved.                */   
6. /* This software may only be used under the terms of a valid, current,        */   
7. /* end user licence from KEIL for a compatible version of KEIL software       */   
8. /* development tools. Nothing else gives you the right to use this software.  */   
9. /******************************************************************************/   
10.    
11. #include               /* STM32F10x Library Definitions      */   
12. //#include "UET_GPIO.h"   
13.    
14.    
15. #define ADC1_DR_Address    ((u32)0x4001244C) //統蕉晤最忒聊菴媼梒摯眈壽敵湔痄華硊腕堤   
16.    
17.    
18. unsigned short int ADC_ConvertedValue[9]={0};   
19. ADC_InitTypeDef   ADC_InitStructure;   
20. DMA_InitTypeDef   DMA_InitStructure;   
21.    
22. void SetupADC (void)    
23. {   
24.      
25. //  /* Configure PC0-PC5 (ADC Channel10-Channel5) as analog input                             */   
26. //  GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5;   
27. //  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;   
28. //  GPIO_Init(GPIOC, &GPIO_InitStructure);   
29.    
30.   /* DMA Channel1 Configuration ----------------------------------------------*/   
31.   DMA_DeInit(DMA_Channel1); //蔚籵耋1腔眈壽敵湔葩弇峈蘇硉   
32.   DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;//俋扢華硊   
33.   DMA_InitStructure.DMA_MemoryBaseAddr     = (u32)&ADC_ConvertedValue;//囀湔華硊   
34.   DMA_InitStructure.DMA_DIR                = DMA_DIR_PeripheralSRC;//dma換怀源砃等砃   
35.   DMA_InitStructure.DMA_BufferSize         = 9;//扢离DMA婓換怀奀遣喳腔酗僅 word   
36.   DMA_InitStructure.DMA_PeripheralInc      = DMA_PeripheralInc_Disable;//扢离DMA腔俋扢菰崝耀宒ㄛ珨跺俋扢   
37.     
38.   DMA_InitStructure.DMA_MemoryInc          = DMA_MemoryInc_Enable;//扢离DMA腔囀湔菰崝耀宒   
39.   DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;//俋扢杅擂趼酗 16bits   
40.   DMA_InitStructure.DMA_MemoryDataSize     = DMA_MemoryDataSize_HalfWord;//囀湔杅擂趼酗    16bits   
41.   DMA_InitStructure.DMA_Mode               = DMA_Mode_Circular;//扢离DMA腔換怀耀宒ㄩ蟀哿祥剿腔悜遠耀宒   
42.   DMA_InitStructure.DMA_Priority           = DMA_Priority_High;//扢离DMA腔蚥珂撰梗   
43.   DMA_InitStructure.DMA_M2M                = DMA_M2M_Disable;//扢离DMA腔2跺memory笢腔曹講誑眈溼恀   
44.   DMA_Init(DMA_Channel1, &DMA_InitStructure);//扢离陔腔籵耋敵湔硉   
45.      
46.   DMA_Cmd(DMA_Channel1, ENABLE);        /* Enable DMA Channel1                */   
47.      
48.   /* ADC1 Configuration (ADC1CLK = 12 MHz) -----------------------------------*/   
49.   ADC_InitStructure.ADC_Mode               = ADC_Mode_Independent;   
50.   ADC_InitStructure.ADC_ScanConvMode       = ENABLE;   
51.   ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;                             
52.   ADC_InitStructure.ADC_ExternalTrigConv   = ADC_ExternalTrigConv_None;   
53.   ADC_InitStructure.ADC_DataAlign          = ADC_DataAlign_Right;   
54.   ADC_InitStructure.ADC_NbrOfChannel       = 9;//9跺籵耋   
55.   ADC_Init(ADC1, &ADC_InitStructure);   
56.    
57.   /* ADC1 Regular Channel Configuration                                      */   
58.   ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 1, ADC_SampleTime_55Cycles5);   
59.   ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 2, ADC_SampleTime_55Cycles5);   
60.   ADC_RegularChannelConfig(ADC1, ADC_Channel_9, 3, ADC_SampleTime_55Cycles5);   
61.   ADC_RegularChannelConfig(ADC1, ADC_Channel_10, 4, ADC_SampleTime_55Cycles5);   
62.   ADC_RegularChannelConfig(ADC1, ADC_Channel_11, 5, ADC_SampleTime_55Cycles5);   
63.   ADC_RegularChannelConfig(ADC1, ADC_Channel_12, 6, ADC_SampleTime_55Cycles5);   
64.   ADC_RegularChannelConfig(ADC1, ADC_Channel_13, 7, ADC_SampleTime_55Cycles5);   
65.   ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 8, ADC_SampleTime_55Cycles5);   
66.   ADC_RegularChannelConfig(ADC1, ADC_Channel_15, 9, ADC_SampleTime_55Cycles5);   
67. //  ADC_RegularChannelConfig(ADC1, ADC_Channel_9, 10, ADC_SampleTime_55Cycles5);   
68. //  ADC_RegularChannelConfig(ADC1, ADC_Channel_10, 11, ADC_SampleTime_55Cycles5);   
69. //  ADC_RegularChannelConfig(ADC1, ADC_Channel_11, 12, ADC_SampleTime_55Cycles5);   
70. //  ADC_RegularChannelConfig(ADC1, ADC_Channel_12, 13, ADC_SampleTime_55Cycles5);   
71. //  ADC_RegularChannelConfig(ADC1, ADC_Channel_13, 14, ADC_SampleTime_55Cycles5);   
72. //  ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 15, ADC_SampleTime_55Cycles5);   
73. //  ADC_RegularChannelConfig(ADC1, ADC_Channel_15, 16, ADC_SampleTime_55Cycles5);   
74.    
75.    /* Enable JEOC interupt */   
76.   ADC_ITConfig(ADC1, ADC_IT_EOC, ENABLE);   
77.    
78.   ADC_DMACmd(ADC1, ENABLE);             /* Enable ADC1's DMA interface        */   
79.   ADC_Cmd   (ADC1, ENABLE);             /* Enable ADC1                        */   
80.    
81.   /* Enable ADC1 reset calibaration register */      
82.   ADC_ResetCalibration(ADC1);   
83.   /* Check the end of ADC1 reset calibration register */   
84.   while(ADC_GetResetCalibrationStatus(ADC1)){};   
85.    
86.   /* Start ADC1 calibaration */   
87.   ADC_StartCalibration(ADC1);   
88.   /* Check the end of ADC1 calibration */   
89.   while(ADC_GetCalibrationStatus(ADC1)){};   
90.    
91.    
92.   ADC_SoftwareStartConvCmd(ADC1,ENABLE);/* Start ADC1 Software Conversion     */    
93. }