STM32开发板入门教程 – 内部温度传感器

废话少说 先看看他的参数
1.STM32内部温度传感器与ADC的通道16相连，与ADC合作运用完成温度丈量；
2.丈量规模–40~125℃，精度±1.5℃。
3.温度传感器发生一个随温度线性改变的电压，转化规模在2V < VDDA < 3.6V之间。 转化公式如下图所示：

第二步是做什么的呢？看这个图就晓得啦

/*******************************************************************************
* 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);
}

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;
}

转化成果 往串口发送显现 （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”));