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- 28
- 注册时间
- 2016-7-15
- 在线时间
- 4 小时
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ADC1ConvertedVoltage[0] = 0;
ADC1ConvertedVoltage[1] = 0;
ADC1ConvertedVoltage[2] = 0;
ADC1ConvertedVoltage[3] = 0;
for(i=0;i<4;i++)
{
for(j=0;j<64;j++)
{
ADC1ConvertedVoltage[i] += ADC1ConvertedValue[j][i];
}
ADC1ConvertedVoltage[i] = ADC1ConvertedVoltage[i]/64;
}
temp1 = ADC1ConvertedVoltage[0]*3.0/4096;
temp2 = ADC1ConvertedVoltage[1]*3.0/4096;
temp3 = ADC1ConvertedVoltage[2]*3.0/4096;
temp4 = ADC1ConvertedVoltage[3]*3.0/4096;
adcx=temp1;
LCD_ShowxNum(124,110,temp1,1,16,0); //ÏÔê¾μçÑ1ÖμÕûêy2¿·Ö
temp1-=adcx;
temp1*=1000;
LCD_ShowxNum(140,110,temp1,3,16,0X80); //ÏÔê¾μçÑ1ÖμμÄD¡êy2¿·Ö
adcx=temp2;
LCD_ShowxNum(124,130,temp2,1,16,0); //ÏÔê¾μçÑ1ÖμÕûêy2¿·Ö
temp2-=adcx;
temp2*=1000;
LCD_ShowxNum(140,130,temp2,3,16,0X80); //ÏÔê¾μçÑ1ÖμμÄD¡êy2¿·Ö
adcx=temp3;
LCD_ShowxNum(124,150,temp3,1,16,0); //ÏÔê¾μçÑ1ÖμÕûêy2¿·Ö
temp3-=adcx;
temp3*=1000;
LCD_ShowxNum(140,150,temp3,3,16,0X80); //ÏÔê¾μçÑ1ÖμμÄD¡êy2¿·Ö
adcx=temp4;
LCD_ShowxNum(124,170,temp4,1,16,0); //ÏÔê¾μçÑ1ÖμÕûêy2¿·Ö
temp4-=adcx;
temp4*=1000;
LCD_ShowxNum(140,170,temp4,3,16,0X80); //ÏÔê¾μçÑ1ÖμμÄD¡êy2¿·Ö
这是adc值提取后的运算程序
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA |RCC_APB2Periph_ADC1 , ENABLE ); //ê1ÄüADC1í¨μàê±Öó
RCC_ADCCLKConfig(RCC_PCLK2_Div6); //éèÖÃADC·ÖÆμòò×ó6 72M/6=12,ADC×î′óê±¼ä2»Äü3¬1y14M
RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC1,ENABLE); //ADC1¸′λ
RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC1,DISABLE); //¸′λ½áêø
//PA1 ×÷ÎaÄ£Äaí¨μàêäèëòy½Å
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; //Ä£Äaêäèëòy½Å
GPIO_Init(GPIOA, &GPIO_InitStructure);
// ADC_DeInit(ADC1); //¸′λADC1,½«íaéè ADC1 μÄè«2¿¼Ä′æÆ÷ÖØéèÎaè±ê¡Öμ
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent; //ADC1¤×÷Ä£ê½:ADC1oíADC21¤×÷Ôú¶àá¢Ä£ê½
ADC_InitStructure.ADC_ScanConvMode = ENABLE; //Ä£êy×a»»1¤×÷Ôúμ¥í¨μàÄ£ê½
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE; //Ä£êy×a»»1¤×÷Ôúμ¥′Î×a»»Ä£ê½
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; //×a»»óéèí¼t¶ø2»êÇía2¿′¥·¢Æô¶ˉ
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; //ADCêy¾Yóò¶ÔÆë
ADC_InitStructure.ADC_NbrOfChannel = 4; //Ë3Dò½øDD1æÔò×a»»μÄADCí¨μàμÄêyÄ¿
ADC_Init(ADC1, &ADC_InitStructure); //¸ù¾YADC_InitStructÖDÖ¸¶¨μÄ2Îêy3õê¼»ˉíaéèADCxμļÄ′æÆ÷
ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 1, ADC_SampleTime_239Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 2, ADC_SampleTime_239Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 3, ADC_SampleTime_239Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 4, ADC_SampleTime_239Cycles5);
//ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);
ADC_DMACmd(ADC1, ENABLE);
ADC_Cmd(ADC1, ENABLE); //ê1ÄüÖ¸¶¨μÄADC1
ADC_ResetCalibration(ADC1); //ê1Äü¸′λD£×¼
while(ADC_GetResetCalibrationStatus(ADC1)); //μè′y¸′λD£×¼½áêø
ADC_StartCalibration(ADC1); //¿aÆôADD£×¼
while(ADC_GetCalibrationStatus(ADC1)); //μè′yD£×¼½áêø
adc初始化
MYDMA_Config(DMA1_Channel1,(u32)ADC1_DR_Address,(u32)&ADC1ConvertedValue,256);//DMA1í¨μà1,íaéèÎaadc¼Ä′æÆ÷,′æ′¢Æ÷ADC1ConvertedValueêy×é,3¤256.
dma初始化
RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE ); //ê1ÄüDACí¨μàê±Öó
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; // ¶Ë¿úÅäÖÃ
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; //Ä£Äaêäèë
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_SetBits(GPIOA,GPIO_Pin_4) ;//PA.4 êä3ö¸ß
DAC_InitType.DAC_Trigger=DAC_Trigger_None; //2»ê1óÃ′¥·¢1|Äü TEN1=0
DAC_InitType.DAC_WaveGeneration=DAC_WaveGeneration_None;//2»ê1óÃ2¨Dη¢éú
DAC_InitType.DAC_LFSRUnmask_TriangleAmplitude=DAC_LFSRUnmask_Bit0;//Æá±Î¡¢·ùÖμéèÖÃ
DAC_InitType.DAC_OutputBuffer=DAC_OutputBuffer_Disable ; //DAC1êä3ö»o′æ1Ø±Õ BOFF1=1
DAC_Init(DAC_Channel_1,&DAC_InitType); //3õê¼»ˉDACí¨μà1
DAC_Cmd(DAC_Channel_1, ENABLE); //ê1ÄüDAC2
DAC_SetChannel1Data(DAC_Align_12b_R, 0); //12λóò¶ÔÆëêy¾Y¸ñê½éèÖÃDACÖμ
DAC初始化
DAC_SetChannel1Data(DAC_Align_12b_R, 0);
DMA_Cmd(DMA1_Channel1, ENABLE); //Æô¶ˉDMAí¨μà
ADC_SoftwareStartConvCmd(ADC1, ENABLE); //èí¼tÆô¶ˉAD×a»»
注释:adc的4号通道和dac共用一个引脚
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