感覺直接貼代碼會好點。。。。。。
1 #include "adc.h"
2
3 float AD1_Value[N];
4 float AD2_Value[N];
5 volatile u32 ADCConvertedValue[N];//ADת»»»º³åÇø,Õ¼ÓÃRAM 0.8KB
6
7
8 void Adc_Init(void)
9 {
10 TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
11 ADC_InitTypeDef ADC_InitStructure;
12 GPIO_InitTypeDef GPIO_InitStructure;
13 DMA_InitTypeDef DMA_InitStructure;
14 NVIC_InitTypeDef NVIC_InitStructure;
15 //////////////////////////////////// Enable Clock ///////////////////////////////////////////////////////////////////////
16 RCC_ADCCLKConfig(RCC_PCLK2_Div6); //72M/6=12,ADC the Max Time Is Lager Than 14M
17 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
18 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA |RCC_APB2Periph_ADC1 , ENABLE ); //ʹÄÜADC1ͨµÀʱÖÓ
19 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA |RCC_APB2Periph_ADC2 , ENABLE ); //ʹÄÜADC2ͨµÀʱÖÓ
20 // RCC_ADCCLKConfig(RCC_PCLK2_Div6); //72M/6=12,ADC the Max Time Is Lager Than 14M
21
22 //PA0.PA1.PA4.PA5 ×÷ΪģÄâͨµÀÊäÈëÒý½Å
23 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_1;
24 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; //Ä£ÄâÊäÈëÒý½Å
25 GPIO_Init(GPIOA, &GPIO_InitStructure);
26
27 ////////////////////////////////////////Initialize DMA /////////////////////////////////////////////////////////////////////
28 DMA_DeInit(DMA1_Channel1); //Reset DMA_Channel_1's Register To Default Value
29 DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)&ADC1->DR; //DMA Device to ADC's Base Address
30 DMA_InitStructure.DMA_MemoryBaseAddr = (u32)&ADCConvertedValue; //DMA Memory Base Address
31 // DMA_InitStructure.DMA_MemoryBaseAddr = (u32)&ADCConvertedValue; //DMA Memory Base Address
32 DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; //Memory be use to Data Chansminsion's Destination
33 DMA_InitStructure.DMA_BufferSize = N; //DMA Channel's DMA Buffer Size
34 DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //Outside Address's Register Is not Change
35 DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; //Buffer Address's Register Is Increasing
36 DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word; //Data size is 16 Bit
37 DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word; //Data Size Is 16 Bit
38 DMA_InitStructure.DMA_Mode = DMA_Mode_Circular; //Work in Cycle Cache Mode
39
40 DMA_InitStructure.DMA_Priority = DMA_Priority_High; //DMA Channel X Have The Higest Priority
41 DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; //DMA Channel X do not set up to Chansmission in Memory to Memory
42 DMA_Init(DMA1_Channel1, &DMA_InitStructure); //According to DMA_InitStruct to Initialize the DMA Channel
43 DMA_Cmd(DMA1_Channel1,ENABLE); //ʹÄÜDMA1ͨµÀ1
44
45
46 ////////////////////////////////////////Initialize NVIC /////////////////////////////////////////////////////////////////////
47 NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
48 NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel1_IRQn;
49 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
50 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
51 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
52 NVIC_Init(&NVIC_InitStructure);
53 DMA_ITConfig(DMA1_Channel1,DMA_IT_TC,ENABLE); //ʹÄÜDMA CH1ÖжÏ
64 ////////////////////////////////////////Initialize ADC /////////////////////////////////////////////////////////////////////
65
66 ADC_DeInit(ADC1); //¸´Î»ADC1,½«ÍâÉè ADC1 µÄÈ«²¿¼Ä´æÆ÷ÖØÉèΪȱʡֵ
67 ADC_DeInit(ADC2); //¸´Î» ADC1,½«ÍâÉè ADC1 µÄÈ«²¿¼Ä´æÆ÷ÖØÉèΪȱʡֵ
68
69 ADC_InitStructure.ADC_Mode = ADC_Mode_RegSimult; //ADC¹¤×÷ģʽ:ADC1ºÍADC2¹¤×÷ÔÚ¶ÀÁ¢Ä£Ê½
70 ADC_InitStructure.ADC_ScanConvMode = ENABLE; //ADC Works in Scan Model
71 ADC_InitStructure.ADC_ContinuousConvMode = ENABLE; //ADC works in Continious Changing Model
72 ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; //ADC is triggered by sofeware instead of Outside
73 ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; //ADC Data Right Align
74 ADC_InitStructure.ADC_NbrOfChannel = 1; //˳Ðò½øÐйæÔòת»»µÄADCͨµÀµÄÊýÄ¿
75 ADC_Init(ADC1, &ADC_InitStructure); //¸ù¾ÝADC_InitStructÖÐÖ¸¶¨µÄ²ÎÊý³õʼ»¯ÍâÉèADCxµÄ¼Ä´æÆ÷
76 ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 1, ADC_SampleTime_1Cycles5 );
77 ADC_DMACmd(ADC1,ENABLE); //ʹÄÜADC1 DMA
84 ADC_InitStructure.ADC_Mode = ADC_Mode_RegSimult; //ADC¹¤×÷ģʽ:ADC2¹¤×÷ÔÚ¶ÀÁ¢Ä£Ê½
85 ADC_InitStructure.ADC_ScanConvMode = ENABLE; //ADC Works in Scan Model
86 ADC_InitStructure.ADC_ContinuousConvMode = ENABLE; //ADC works in Continious Changing Model
87 ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; //ADC is triggered by sofeware instead of Outside
88 ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; //ADC Data Right Align
89 ADC_InitStructure.ADC_NbrOfChannel = 1; //˳Ðò½øÐйæÔòת»»µÄADCͨµÀµÄÊýÄ¿
90 ADC_RegularChannelConfig(ADC2, ADC_Channel_2, 1, ADC_SampleTime_1Cycles5 );
91 ADC_Init(ADC2, &ADC_InitStructure); //¸ù¾ÝADC_InitStructÖÐÖ¸¶¨µÄ²ÎÊý³õʼ»¯ÍâÉèADCxµÄ¼Ä´æÆ÷
92 ADC_ExternalTrigConvCmd(ADC2, ENABLE);
93
94
95 ADC_DMACmd(ADC1, ENABLE);
96 ADC_Cmd(ADC1, ENABLE); //ʹÄÜÖ¸¶¨µÄADC1 98
99 ADC_ResetCalibration(ADC1); //ʹÄܸ´Î»Ð£×¼
100 while(ADC_GetResetCalibrationStatus(ADC1)); //µÈ´ý¸´Î»Ð£×¼½áÊø
101 ADC_StartCalibration(ADC1); //¿ªÆôADУ׼
102 while(ADC_GetCalibrationStatus(ADC1)); //µÈ´ýУ׼½áÊø
103
104 ADC_Cmd(ADC2, ENABLE);
105 ADC_ResetCalibration(ADC2); //ʹÄܸ´Î»Ð£×¼
106 while(ADC_GetResetCalibrationStatus(ADC2)); //µÈ´ý¸´Î»Ð£×¼½áÊø
107 ADC_StartCalibration(ADC2); //¿ªÆôADУ׼
108 while(ADC_GetCalibrationStatus(ADC2)); //µÈ´ýУ׼½áÊø
109
110 // delay_ms(10);
111 ADC_SoftwareStartConvCmd(ADC1, ENABLE); //ʹÄÜÖ¸¶¨µÄADC1µÄÈí¼þת»»Æô¶¯¹¦ÄÜ
112 }
113
114
115 void DMA1_Channel1_IRQHandler()
116 {
117 u16 i;
118 u16 temp1,temp2;
119 DMA_ClearFlag(DMA1_FLAG_TC1); //清除DMA傳輸完成中斷
120 DMA_Cmd(DMA1_Channel1,DISABLE);
121 for(i = 0; i < N ; i++)
122 {
123 temp1 = (ADCConvertedValue[i]<<16)>>16;
124 temp2 = ADCConvertedValue[i] >> 16;
125 AD1_Value[i] =((float)temp1)*(3.3/4096);
126 AD2_Value[i] =((float)temp2)*(3.3/4096);
127 Get_tem_buf(i);
128 }
129 DMA_Cmd(DMA1_Channel1,ENABLE);
131 LED0 = ~LED0;
132 }
有些注釋直接從Keil5裡面粘出來到這裡就不支持了。。。。。。。好尴尬。。。。下次碼代碼注釋還是全英算了、、、
哈哈。。有什麼問題可以一起來探討、、、不知道為啥分類不到嵌入式那裡只好點Linux那裡了。。
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