stm32f10x_adc.c

stm32f rfid通讯源代码.支持双向发送接收.

  ADCx->SQJR = tmpreg1;
}

/*******************************************************************************
* Function Name  : ADC_InjectedSequencerLengthConfig
* Description    : Configures the sequencer for injected channels
* Input          : - ADCx: where x can be 1 or 2 to select the ADC peripheral.
*                  - Length: The sequencer length.
*                    This parameter must be a number between 1 to 4.
* Output         : None
* Return         : None
*******************************************************************************/
void ADC_InjectedSequencerLengthConfig(ADC_TypeDef* ADCx, u8 Length)
{
  u32 tmpreg1 = 0;
  u8 tmpreg2 = 0;

  /* Get the old register value */
  tmpreg1 = ADCx->SQJR;
  /* Clear the old injected sequnence lenght LJ bits */
  tmpreg1 &= SQJR_LJ_Reset;
  /* Set the Sinjected sequnence lenght LJ bits */
  tmpreg2 = Length - 1;
  tmpreg1 |= tmpreg2 << 20;
  /* Store the new register value */
  ADCx->SQJR = tmpreg1;
}

/*******************************************************************************
* Function Name  : ADC_SetInjectedOffset
* Description    : Set the injected channels conversion value offset
* Input          : - ADCx: where x can be 1 or 2 to select the ADC peripheral.
*                  - ADC_InjectedChannel: the ADC injected channel to set its
*                    offset.
*                    This parameter can be one of the following values:
*                       - ADC_InjectedChannel1: Injected Channel1 selected
*                       - ADC_InjectedChannel2: Injected Channel2 selected
*                       - ADC_InjectedChannel3: Injected Channel3 selected
*                       - ADC_InjectedChannel4: Injected Channel4 selected
* Output         : None
* Return         : None
*******************************************************************************/
void ADC_SetInjectedOffset(ADC_TypeDef* ADCx, u8 ADC_InjectedChannel, u16 Offset)
{
  /* Set the selected injected channel data offset */
  *((u32 *)((*(u32*)&ADCx) + ADC_InjectedChannel)) = (u32)Offset;
}

/*******************************************************************************
* Function Name  : ADC_GetInjectedConversionValue
* Description    : Returns the ADC conversion result data for the selected
*                  injected channel
* Input          : - ADCx: where x can be 1 or 2 to select the ADC peripheral.
*                  - ADC_InjectedChannel: the converted ADC injected channel.
*                    This parameter can be one of the following values:
*                       - ADC_InjectedChannel1: Injected Channel1 selected
*                       - ADC_InjectedChannel2: Injected Channel2 selected
*                       - ADC_InjectedChannel3: Injected Channel3 selected
*                       - ADC_InjectedChannel4: Injected Channel4 selected
* Output         : None
* Return         : The Data conversion value.
*******************************************************************************/
u16 ADC_GetInjectedConversionValue(ADC_TypeDef* ADCx, u8 ADC_InjectedChannel)
{
  /* Returns the selected injected channel conversion data value */
  return (u16) *((u32 *)(ADCx->SR + ADC_InjectedChannel));
}

/*******************************************************************************
* Function Name  : ADC_AnalogWatchdogCmd
* Description    : Enables or disables the analog watchdog on single/all regular
*                  or injected channels
* Input          : - ADCx: where x can be 1 or 2 to select the ADC peripheral.
*                  - ADC_AnalogWatchdog: the ADC analog watchdog configuration.
*                    This parameter can be one of the following values:
*                       - ADC_AnalogWatchdog_SingleEnable: Analog watchdog on
*                         a single regular channel
*                       - ADC_AnalogWatchdog_AllRegEnable: Analog watchdog on
*                         all regular channel
*                       - ADC_AnalogWatchdog_AllInjecEnable: Analog watchdog on
*                         all injected channel
*                       - ADC_AnalogWatchdog_AllRegAllInjecEnable: Analog watchdog
*                         on all regular and injected channels
*                       - ADC_AnalogWatchdog_None: No channel guarded by the
*                         analog watchdog
* Output         : None
* Return         : None
*******************************************************************************/
void ADC_AnalogWatchdogCmd(ADC_TypeDef* ADCx, u32 ADC_AnalogWatchdog)
{
  u32 tmpreg = 0;

  /* Get the old register value */
  tmpreg = ADCx->CR1;
  /* Clear AWDEN, AWDENJ and AWDSGL bits */
  tmpreg &= CR1_AWDMode_Reset;
  /* Set the analog watchdog enable mode */
  tmpreg |= ADC_AnalogWatchdog;
  /* Store the new register value */
  ADCx->CR1 = tmpreg;
}

/*******************************************************************************
* Function Name  : ADC_AnalogWatchdogThresholdsConfig
* Description    : Configures the High and low thresholds of the analog watchdog.
* Input          : - ADCx: where x can be 1 or 2 to select the ADC peripheral.
*                  - HighThreshold: the ADC analog watchdog High threshold value.
*                    This parameter must be a 12bit value.
*                  - LowThreshold: the ADC analog watchdog Low threshold value.
*                    This parameter must be a 12bit value.
* Output         : None
* Return         : None
*******************************************************************************/
void ADC_AnalogWatchdogThresholdsConfig(ADC_TypeDef* ADCx, u16 HighThreshold,
                                        u16 LowThreshold)
{
  /* Set the ADCx high threshold */
  ADCx->HTR = HighThreshold;
  /* Set the ADCx low threshold */
  ADCx->LTR = LowThreshold;
}

/*******************************************************************************
* Function Name  : ADC_AnalogWatchdogSingleChannelConfig
* Description    : Configures the analog watchdog guarded single channel
* Input          : - ADCx: where x can be 1 or 2 to select the ADC peripheral.
*                  - ADC_Channel: the ADC channel to configure for the analog
*                    watchdog.
*                    This parameter can be one of the following values:
*                       - ADC_Channel0: ADC Channel0 selected
*                       - ADC_Channel1: ADC Channel1 selected
*                       - ADC_Channel2: ADC Channel2 selected
*                       - ADC_Channel3: ADC Channel3 selected
*                       - ADC_Channel4: ADC Channel4 selected
*                       - ADC_Channel5: ADC Channel5 selected
*                       - ADC_Channel6: ADC Channel6 selected
*                       - ADC_Channel7: ADC Channel7 selected
*                       - ADC_Channel8: ADC Channel8 selected
*                       - ADC_Channel9: ADC Channel9 selected
*                       - ADC_Channel10: ADC Channel10 selected
*                       - ADC_Channel11: ADC Channel11 selected
*                       - ADC_Channel12: ADC Channel12 selected
*                       - ADC_Channel13: ADC Channel13 selected
*                       - ADC_Channel14: ADC Channel14 selected
*                       - ADC_Channel15: ADC Channel15 selected
*                       - ADC_Channel16: ADC Channel16 selected
*                       - ADC_Channel17: ADC Channel17 selected
* Output         : None
* Return         : None
*******************************************************************************/
void ADC_AnalogWatchdogSingleChannelConfig(ADC_TypeDef* ADCx, u8 ADC_Channel)
{
  u32 tmpreg = 0;

  /* Get the old register value */
  tmpreg = ADCx->CR1;
  /* Clear the Analog watchdog channel select bits */
  tmpreg &= CR1_AWDCH_Reset;
  /* Set the Analog watchdog channel */
  tmpreg |= ADC_Channel;
  /* Store the new register value */
  ADCx->CR1 = tmpreg;
}

/*******************************************************************************
* Function Name  : ADC_TempSensorCmd
* Description    : Enables or disables the temperature sensor.
* Input          : - NewState: new state of the temperature sensor.
*                    This parameter can be: ENABLE or DISABLE.
* Output         : None
* Return         : None
*******************************************************************************/
void ADC_TempSensorCmd(FunctionalState NewState)
{
  if (NewState != DISABLE)
  {
    /* Enable the temperature sensor  */
    ADC1->CR2 |= CR2_TSPD_Set;
  }
  else
  {
    /* Disable the temperature sensor */
    ADC1->CR2 &= CR2_TSPD_Reset;
  }
}

/*******************************************************************************
* Function Name  : ADC_GetFlagStatus
* Description    : Checks whether the specified ADC flag is set or not.
* Input          : - ADCx: where x can be 1 or 2 to select the ADC peripheral.
*                  - ADC_FLAG: specifies the flag to check.
*                    This parameter can be one of the following values:
*                       - ADC_FLAG_AWDOG: Analog watchdog flag
*                       - ADC_FLAG_EOC: End of conversion flag
*                       - ADC_FLAG_JEOC: End of injected group conversion flag
*                       - ADC_FLAG_JSTRT: Start of injected group conversion flag
*                       - ADC_FLAG_RSTRT: Start of regular group conversion flag
* Output         : None
* Return         : The new state of ADC_FLAG (SET or RESET).
*******************************************************************************/
FlagStatus ADC_GetFlagStatus(ADC_TypeDef* ADCx, u8 ADC_FLAG)
{
  FlagStatus bitstatus = RESET;

  /* Check the status of the specified ADC flag */
  if ((ADCx->SR & ADC_FLAG) != RESET)
  {
    /* ADC_FLAG is set */
    bitstatus = SET;
  }
  else
  {
    /* ADC_FLAG is reset */
    bitstatus = RESET;
  }
  /* Return the ADC_FLAG status */
  return  bitstatus;
}

/*******************************************************************************
* Function Name  : ADC_ClearFlag
* Description    : Clears the ADCx's pending flags.
* Input          : - ADCx: where x can be 1 or 2 to select the ADC peripheral.
*                  - ADC_FLAG: specifies the flag to clear.
*                    This parameter can be any combination of the following values:
*                       - ADC_FLAG_AWDOG: Analog watchdog flag
*                       - ADC_FLAG_EOC: End of conversion flag
*                       - ADC_FLAG_JEOC: End of injected group conversion flag
*                       - ADC_FLAG_JSTRT: Start of injected group conversion flag
*                       - ADC_FLAG_RSTRT: Start of regular group conversion flag
* Output         : None
* Return         : None
*******************************************************************************/
void ADC_ClearFlag(ADC_TypeDef* ADCx, u8 ADC_FLAG)
{
  /* Clear the selected ADC flags */
  ADCx->SR &= ~ADC_FLAG;
}

/*******************************************************************************
* Function Name  : ADC_GetITStatus
* Description    : Checks whether the specified ADC interrupt has occurred or not.
* Input          : - ADCx: where x can be 1 or 2 to select the ADC peripheral.
*                  - ADC_IT: specifies the ADC interrupt source to check.
*                    This parameter can be one of the following values:
*                       - ADC_IT_EOC: End of conversion interrupt mask
*                       - ADC_IT_AWDOG: Analog watchdog interrupt mask
*                       - ADC_IT_JEOC: End of injected conversion interrupt mask
* Output         : None
* Return         : The new state of ADC_IT (SET or RESET).
*******************************************************************************/
ITStatus ADC_GetITStatus(ADC_TypeDef* ADCx, u16 ADC_IT)
{
  ITStatus pendingbitstatus = RESET;
  u8 itmask = 0, enablestatus;

  /* Get the ADC IT index */
  itmask = (u8)(ADC_IT >> 8);

  /* Get the ADC_IT enable bit status */
  enablestatus = (ADCx->CR1 & (u8)ADC_IT) ;

  /* Check the status of the specified ADC interrupt */
  if (((ADCx->SR & itmask) != RESET) && enablestatus)
  {
    /* ADC_IT is set */
    pendingbitstatus = SET;
  }
  else
  {
    /* ADC_IT is reset */
    pendingbitstatus = RESET;
  }
  /* Return the ADC_IT status */
  return  pendingbitstatus;
}

/*******************************************************************************
* Function Name  : ADC_ClearITPendingBit
* Description    : Clears the ADC抯 interrupt pending bits.
* Input          : - ADC_IT: specifies the ADC interrupt pending bit to clear.
*                    This parameter can be any combination of the following values:
*                       - ADC_IT_EOC: End of conversion interrupt mask
*                       - ADC_IT_AWDOG: Analog watchdog interrupt mask
*                       - ADC_IT_JEOC: End of injected conversion interrupt mask
* Output         : None
* Return         : None
*******************************************************************************/
void ADC_ClearITPendingBit(ADC_TypeDef* ADCx, u8 ADC_IT)
{
  u8 itmask = 0;

  /* Get the ADC IT index */
  itmask = (u8)(ADC_IT >> 8);

  /* Clear the selected ADC interrupt pending bits */
  ADCx->SR &= ~itmask;
}

/******************* (C) COPYRIGHT 2007 STMicroelectronics *****END OF FILE****/