本帖最后由 nvjwiciw659 于 2020-12-6 19:22 编辑
今天我们来实现一个采集单片机内部温度
1.查文档
2.偷懒复制例程
/*******************************************************************************
* Function Name : ADC_Function_Init
* Description : Initializes ADC collection.
* Input : None
* Return : None
*******************************************************************************/
void ADC_Function_Init(void)
{
ADC_InitTypeDef ADC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE );
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE );
RCC_ADCCLKConfig(RCC_PCLK2_Div8);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
ADC_DeInit(ADC1);
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 1;
ADC_Init(ADC1, &ADC_InitStructure);
ADC_TempSensorVrefintCmd(ENABLE);
ADC_Cmd(ADC1, ENABLE);
ADC_ResetCalibration(ADC1);
while(ADC_GetResetCalibrationStatus(ADC1));
ADC_StartCalibration(ADC1);
while(ADC_GetCalibrationStatus(ADC1));
}
/*******************************************************************************
* Function Name : Get_ADC_Val
* Description : Returns ADCx conversion result data.
* Input : ch: ADC channel.
* ADC_Channel_0: ADC Channel0 selected.
* ADC_Channel_1: ADC Channel1 selected.
* ADC_Channel_2: ADC Channel2 selected.
* ADC_Channel_3: ADC Channel3 selected.
* ADC_Channel_4: ADC Channel4 selected.
* ADC_Channel_5: ADC Channel5 selected.
* ADC_Channel_6: ADC Channel6 selected.
* ADC_Channel_7: ADC Channel7 selected.
* ADC_Channel_8: ADC Channel8 selected.
* ADC_Channel_9: ADC Channel9 selected.
* ADC_Channel_10: ADC Channel10 selected.
* ADC_Channel_11: ADC Channel11 selected.
* ADC_Channel_12: ADC Channel12 selected.
* ADC_Channel_13: ADC Channel13 selected.
* ADC_Channel_14: ADC Channel14 selected.
* ADC_Channel_15: ADC Channel15 selected.
* ADC_Channel_16: ADC Channel16 selected.
* ADC_Channel_17: ADC Channel17 selected.
* Return : val: The Data conversion value.
*******************************************************************************/
u16 Get_ADC_Val(u8 ch)
{
u16 val;
ADC_RegularChannelConfig(ADC1, ch, 1, ADC_SampleTime_239Cycles5 );
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC ));
val = ADC_GetConversionValue(ADC1);
return val;
}
/*******************************************************************************
* Function Name : Get_ADC_Average
* Description : Returns ADCx conversion result average data.
* Input : ch: ADC channel.
* ADC_Channel_0: ADC Channel0 selected.
* ADC_Channel_1: ADC Channel1 selected.
* ADC_Channel_2: ADC Channel2 selected.
* ADC_Channel_3: ADC Channel3 selected.
* ADC_Channel_4: ADC Channel4 selected.
* ADC_Channel_5: ADC Channel5 selected.
* ADC_Channel_6: ADC Channel6 selected.
* ADC_Channel_7: ADC Channel7 selected.
* ADC_Channel_8: ADC Channel8 selected.
* ADC_Channel_9: ADC Channel9 selected.
* ADC_Channel_10: ADC Channel10 selected.
* ADC_Channel_11: ADC Channel11 selected.
* ADC_Channel_12: ADC Channel12 selected.
* ADC_Channel_13: ADC Channel13 selected.
* ADC_Channel_14: ADC Channel14 selected.
* ADC_Channel_15: ADC Channel15 selected.
* ADC_Channel_16: ADC Channel16 selected.
* ADC_Channel_17: ADC Channel17 selected.
* Return : val: The Data conversion value.
*******************************************************************************/
u16 Get_ADC_Average(u8 ch,u8 times)
{
u32 temp_val=0;
u8 t;
u16 val;
for(t=0;t<times;t++)
{
temp_val+=Get_ADC_Val(ch);
Delay_Ms(5);
}
val = temp_val/times;
return val;
}
3.烧录程序
不过内部温度大家都懂,不是很准确,所以玩玩就行!
下一步我准备调好串口,然后我们把这个温度数据上传到云平台,测试快结束了,大家加油!!!
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