STM32L151C8T6 Temperture Sensor 读不到数据

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小s是白痴提问时间：2016-6-27 10:29 /

本帖最后由小s是白痴于 2016-6-27 11:29 编辑

//使用debug模式观看

// Channel_5 及channel_17的数据可以读的到

// Channel_16 温度sensor 读不到

//请问各位先进,小弟有哪个地方设错了

//附上完整档案

/**********************************************************/

//refer AN3964 page3,page6
#define       VREFINT_CAL_Adr       0x1FF80078
#define       TS_CAL1_Adr             0x1FF8007A
#define       TS_CAL2_Adr             0x1FF8007C

//*****************************************************************************
//* Private variables */
//*****************************************************************************
float g_ftTemperature;

float g_ftADCBUF5;
float g_ftADCBUF16;
float g_ftADCBUF17;
float g_ftVDDa;

float g_ftVREFINT_CAL;
float g_ftTS_CAL1;
float g_ftTS_CAL2;
unsigned int  g_uiADC_CH_Value[20];
/**********************************************************/

int main(void)
{
uint32_t *pttmpreg ;
float       fCalCulBuf1;

//-----------------------------------------------------------------------------
//Peripheral clock configuration
//-----------------------------------------------------------------------------

/* GPIOD Periph clock enable */
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);

  RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM10, ENABLE);
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);

//***************************************************/
// ADC1 Configuration
//***************************************************/

  ADC_InitTypeDef                ADC_InitStructure;

  RCC_HSICmd(ENABLE);

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);

  ADC_DeInit(ADC1);

  ADC_TempSensorVrefintCmd(ENABLE);          //Enable Cannel_16  (Temperature Sensor)

ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;

  // Disable the scan conversion so we do one at a time //
  ADC_InitStructure.ADC_ScanConvMode = DISABLE;

  // Don't do contimuous conversions - do them on demand //
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;

  // Start conversin by software, not an external trigger //
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConvEdge_None;

  // Initialize the ADC_ExternalTrigConv member //
//  ADC_InitStructure->ADC_ExternalTrigConv = ADC_ExternalTrigConv_T2_CC2;

  // Conversions are 12 bit - put them in the lower 12 bits of the result //
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;

  // Say how many channels would be used by the sequencer //
  ADC_InitStructure.ADC_NbrOfConversion = 1;

  // Now do the setup //
  ADC_Init(ADC1, &ADC_InitStructure);

  // Enable ADC1 //
  ADC_Cmd(ADC1, ENABLE);

//**************************************************/
  pttmpreg = (uint32_t *) VREFINT_CAL_Adr;
  g_ftVREFINT_CAL = (*pttmpreg)&0xFFFF;

  pttmpreg = (uint32_t *) TS_CAL1_Adr;
  g_ftTS_CAL1 = (*pttmpreg)&0xFFFF;

  pttmpreg = (uint32_t *) TS_CAL2_Adr;
  g_ftTS_CAL2 = (*pttmpreg)>>16;

//***************************************************/
//*                                     MAIN LOOP                                        */
//***************************************************/

  while (1)
  {

// ADC_Channel_16
ADC_RegularChannelConfig(ADC1, ADC_Channel_16 , 1, ADC_SampleTime_384Cycles);
ADC_SoftwareStartConv(ADC1);

ADC_ClearFlag(ADC1, ADC_FLAG_EOC);
while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC)==0);

g_uiADC_CH_Value[16] =  ADC_GetConversionValue(ADC1);
g_ftTemperature =((110-30)/(g_ftTS_CAL2-g_ftTS_CAL1)) * (g_uiADC_CH_Value[16] - g_ftTS_CAL1) + 30;


// ADC_Channel_17
ADC_RegularChannelConfig(ADC1, ADC_Channel_17 , 1, ADC_SampleTime_384Cycles);
ADC_SoftwareStartConv(ADC1);

ADC_ClearFlag(ADC1, ADC_FLAG_EOC);
while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC)==0);

g_uiADC_CH_Value[17] = ADC_GetConversionValue(ADC1);
fCalCulBuf1 = g_uiADC_CH_Value[17];

g_ftVDDa =  3 * g_ftVREFINT_CAL / fCalCulBuf1 ;

// ADC_Channel_5
ADC_RegularChannelConfig(ADC1, ADC_Channel_5 , 1, ADC_SampleTime_384Cycles);
ADC_SoftwareStartConv(ADC1);

ADC_ClearFlag(ADC1, ADC_FLAG_EOC);
while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC)==0);

g_uiADC_CH_Value[5] = ADC_GetConversionValue(ADC1);
g_ftADCBUF5 = g_uiADC_CH_Value[5]* (g_ftVDDa/4095);

  }
}