/*******************************************************************************
* Function Name : ADC_Configuration
* Description : ADC_Configuration
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void ADC_Configuration(void)
{
/* DMA1 channel1 configuration ----------------------------------------------*/
DMA_DeInit(DMA1_Channel1);
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)&ADCConvertedValue;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = 1;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel1, &DMA_InitStructure);
/* Enable DMA1 channel1 */
DMA_Cmd(DMA1_Channel1, ENABLE);
/* ADC1 configuration ------------------------------------------------------*/
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 1;
ADC_Init(ADC1, &ADC_InitStructure);
/* ADC1 regular channel14 configuration */
ADC_RegularChannelConfig(ADC1, ADC_Channel_16, 1, ADC_SampleTime_55Cycles5);
/* Enable the temperature sensor and vref internal channel */
ADC_TempSensorVrefintCmd(ENABLE);
/* Enable ADC1 DMA */
ADC_DMACmd(ADC1, ENABLE);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* Enable ADC1 reset calibaration register */
ADC_ResetCalibration(ADC1);
/* Check the end of ADC1 reset calibration register */
while(ADC_GetResetCalibrationStatus(ADC1));
/* Start ADC1 calibaration */
ADC_StartCalibration(ADC1);
/* Check the end of ADC1 calibration */
while(ADC_GetCalibrationStatus(ADC1));
/* Start ADC1 Software Conversion */
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
}
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这个是抄袭马七的均值数字滤波函数 呵呵
/*******************************************************************************
* Function Name : ADC_Filter
* Description : ADC_Filter
* Input : None
* Output : None
* Return : ADC Converted Value
*******************************************************************************/
u16 ADC_Filter(void)
{
u16 result=0;
u8 i;
for(i=16;i>0;i--)
{
Delay_Ms(1);
result += ADCConvertedValue;
}
return result/16;
}
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转换结果 往串口发送显示 （写的很烂哈）
ADC_Value = ADC_filter();
vu16 Temperature= (1.42 - ADC_Value*3.3/4096)*1000/4.35 + 25;
ADC_Value = Temperature;
a = ADC_Value/1000;
b = (ADC_Value - a*1000)/100;
c = (ADC_Value - a*1000 - b*100)/10;
d = ADC_Value - a*1000 - b*100 - c*10;
Uart1_PutString("STM32 Chip Temperature = ",strlen("STM32 Chip Temperature = "));
Uart1_PutChar(a+'0');
Uart1_PutChar(b+'0');
Uart1_PutChar(c+'0');
Uart1_PutChar(d+'0');
Uart1_PutString(" C/n",strlen(" C/n")); |
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