stm8l15x_dac.c

STM8L的tim4定时器使用

  */
void DAC_SoftwareTriggerCmd(DAC_Channel_TypeDef DAC_Channel, FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_DAC_CHANNEL(DAC_Channel));
  assert_param(IS_FUNCTIONAL_STATE(NewState));

  if (NewState != DISABLE)
  {
    /* Enable software trigger for the selected DAC channel */
    DAC->SWTRIGR |= (uint8_t)(DAC_SWTRIGR_SWTRIG1 << DAC_Channel);
  }
  else
  {
    /* Disable software trigger for the selected DAC channel */
    DAC->SWTRIGR &= (uint8_t)~((uint8_t)(DAC_SWTRIGR_SWTRIG1 << DAC_Channel));
  }
}

/**
  * @brief  Enables or disables simultaneously the two DAC channels software
  *         triggers.
  * @param  NewState: new state of the DAC channels software triggers.
  *          This parameter can be: ENABLE or DISABLE.
  * @retval None.
  */
void DAC_DualSoftwareTriggerCmd(FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_FUNCTIONAL_STATE(NewState));

  if (NewState != DISABLE)
  {
    /* Enable software trigger for both DAC channels */
    DAC->SWTRIGR |= (DAC_SWTRIGR_SWTRIG1 | DAC_SWTRIGR_SWTRIG2) ;
  }
  else
  {
    /* Disable software trigger for both DAC channels */
    DAC->SWTRIGR &= (uint8_t)~(DAC_SWTRIGR_SWTRIG1 | DAC_SWTRIGR_SWTRIG2);
  }
}

/**
  * @brief  Enables or disables the selected DAC channel wave generation.
  * @param  DAC_Channel: the selected DAC channel. 
  *          This parameter can be one of the following values:
  *            @arg DAC_Channel_1: DAC Channel1 selected
  *            @arg DAC_Channel_2: DAC Channel2 selected
  * @param  DAC_Wave: Specifies the wave type to enable or disable.
  *          This parameter can be one of the following values:
  *            @arg DAC_Wave_Noise: noise wave generation
  *            @arg DAC_Wave_Triangle: triangle wave generation
  * @param  NewState: new state of the selected DAC channel wave generation.
  *          This parameter can be: ENABLE or DISABLE.
  * @retval None
  */
void DAC_WaveGenerationCmd(DAC_Channel_TypeDef DAC_Channel,
                           DAC_Wave_TypeDef DAC_Wave,
                           FunctionalState NewState)
{
  uint8_t tmpreg = 0;

  /* Check the DAC parameters */
  assert_param(IS_DAC_CHANNEL(DAC_Channel));
  assert_param(IS_DAC_WAVE(DAC_Wave));
  assert_param(IS_FUNCTIONAL_STATE(NewState));

  /* Get the DAC CHxCR1 value & Clear WAVEN bits */
  tmpreg = (uint8_t)((*(uint8_t*)(uint16_t)(DAC_BASE + CR1_Offset + (uint8_t)((uint8_t)DAC_Channel << 1))) & (uint8_t)~(DAC_CR1_WAVEN));

  if (NewState != DISABLE)
  {
    tmpreg |= (uint8_t)(DAC_Wave);
  }

  /* Write to DAC CHxCR1 */
  (*(uint8_t*) (uint16_t)(DAC_BASE + CR1_Offset +  (uint8_t)((uint8_t)DAC_Channel << 1))) = tmpreg;

}

/**
  * @brief  Select DAC Noise Wave Generation LFSR according to the specified parameters.
  * @param  DAC_Channel: the selected DAC channel. 
  *          This parameter can be one of the following values:
  *            @arg DAC_Channel_1: DAC Channel1 selected
  *            @arg DAC_Channel_2: DAC Channel2 selected
  * @param  DAC_LFSRUnmask : the selected unmasked bit.
  *          This parameter can be one of the following values:
  *            @arg DAC_LFSRUnmask_Bit0: Noise LFSR Unmask 1 LSB
  *            @arg DAC_LFSRUnmask_Bits1_0: Noise LFSR Unmask 2 LSB  
  *            @arg DAC_LFSRUnmask_Bit2_0: Noise LFSR Unmask 3 LSB
  *            @arg DAC_LFSRUnmask_Bit3_0: Noise LFSR Unmask 4 LSB
  *            @arg DAC_LFSRUnmask_Bit4_0: Noise LFSR Unmask 5 LSB
  *            @arg DAC_LFSRUnmask_Bit5_0: Noise LFSR Unmask 6 LSB
  *            @arg DAC_LFSRUnmask_Bit6_0: Noise LFSR Unmask 7 LSB
  *            @arg DAC_LFSRUnmask_Bit7_0: Noise LFSR Unmask 8 LSB
  *            @arg DAC_LFSRUnmask_Bit8_0: Noise LFSR Unmask 9 LSB
  *            @arg DAC_LFSRUnmask_Bit9_0: Noise LFSR Unmask 10 LSB
  *            @arg DAC_LFSRUnmask_Bit10_0: Noise LFSR Unmask 11 LSB
  *            @arg DAC_LFSRUnmask_Bit11_0: Noise LFSR Unmask 12 LSB                    
  * @retval None
  */
void DAC_SetNoiseWaveLFSR(DAC_Channel_TypeDef DAC_Channel, DAC_LFSRUnmask_TypeDef DAC_LFSRUnmask)
{
  uint8_t tmpreg = 0;
  uint16_t cr2addr = 0;

  /* Check the DAC parameters */
  assert_param(IS_DAC_CHANNEL(DAC_Channel));
  assert_param(IS_DAC_LFSR_UNMASK_TRIANGLE_AMPLITUDE(DAC_LFSRUnmask));

  /* Get the DAC CHxCR2 value  &  Clear MAMPx bits */
  cr2addr = (uint16_t)(DAC_BASE + CR2_Offset + (uint8_t)((uint8_t)DAC_Channel << 1));
  tmpreg = (uint8_t)((*(uint8_t*)(cr2addr)) & (uint8_t)~(DAC_CR2_MAMPx));

  /* Write to DAC CHxCR2 */
  (*(uint8_t*)(cr2addr)) = (uint8_t)( tmpreg | DAC_LFSRUnmask);
}

/**
  * @brief  Select DAC Triangle Wave Generation Amplitude according to the specified parameters.
  * @param  DAC_Channel: the selected DAC channel. 
  *          This parameter can be one of the following values:
  *            @arg DAC_Channel_1: DAC Channel1 selected
  *            @arg DAC_Channel_2: DAC Channel2 selected
  * @param  DAC_TriangleAmplitude : the selected Amplitude
  *          This parameter can be one of the following values:
  *            @arg DAC_TriangleAmplitude_1: Triangle Amplitude = Vref.(1/4096)
  *            @arg DAC_TriangleAmplitude_3: Triangle Amplitude = Vref.(3/4096)  
  *            @arg DAC_TriangleAmplitude_7: Triangle Amplitude = Vref.(7/4096)
  *            @arg DAC_TriangleAmplitude_15: Triangle Amplitude = Vref.(15/4096)
  *            @arg DAC_TriangleAmplitude_31: Triangle Amplitude = Vref.(31/4096)
  *            @arg DAC_TriangleAmplitude_63: Triangle Amplitude = Vref.(63/4096)
  *            @arg DAC_TriangleAmplitude_127: Triangle Amplitude = Vref.(127/4096)
  *            @arg DAC_TriangleAmplitude_255: Triangle Amplitude = Vref.(255/4096)
  *            @arg DAC_TriangleAmplitude_511: Triangle Amplitude = Vref.(511/4096)
  *            @arg DAC_TriangleAmplitude_1023: Triangle Amplitude = Vref.(1023/4096)
  *            @arg DAC_TriangleAmplitude_2047: Triangle Amplitude = Vref.(2047/4096)
  *            @arg DAC_TriangleAmplitude_4095: Triangle Amplitude = Vref.(4095/4096) 
  * @retval None
  */
void DAC_SetTriangleWaveAmplitude(DAC_Channel_TypeDef DAC_Channel, DAC_TriangleAmplitude_TypeDef DAC_TriangleAmplitude)
{
  uint8_t tmpreg = 0;
  uint16_t cr2addr = 0;

  /* Check the DAC parameters */
  assert_param(IS_DAC_CHANNEL(DAC_Channel));
  assert_param(IS_DAC_LFSR_UNMASK_TRIANGLE_AMPLITUDE(DAC_TriangleAmplitude));


  /* Get the DAC CHxCR2 value  &  Clear MAMPx bits */
  cr2addr = (uint16_t)(DAC_BASE + CR2_Offset + (uint8_t)((uint8_t)DAC_Channel << 1));
  tmpreg = (uint8_t)((*(uint8_t*)(cr2addr)) & (uint8_t)~(DAC_CR2_MAMPx));

  /* Write to DAC CHxCR2 */
  (*(uint8_t*)(cr2addr)) = (uint8_t)( tmpreg | DAC_TriangleAmplitude);
}

/**
  * @brief  Set the specified data holding register value for DAC channel1.
  * @param  DAC_Align: Specifies the data alignment for DAC channel1.
  *          This parameter can be one of the following values:
  *            @arg DAC_Align_8b_R: 8bit right data alignment selected
  *            @arg DAC_Align_12b_L: 12bit left data alignment selected
  *            @arg DAC_Align_12b_R: 12bit right data alignment selected
  * @param  Data : Data to be loaded in the selected data holding register.
  * @retval None.
  */
void DAC_SetChannel1Data(DAC_Align_TypeDef DAC_Align, uint16_t DAC_Data)
{
  /* Check the parameters */
  assert_param(IS_DAC_ALIGN(DAC_Align));

  if (DAC_Align != DAC_Align_8b_R)
  {
    /* Set the DAC channel1 selected data holding register */
    *(uint8_t*)((uint16_t)(DAC_BASE + CH1RDHRH_Offset + DAC_Align )) = (uint8_t)(((uint16_t)DAC_Data) >> 8);
    *(uint8_t*)((uint16_t)(DAC_BASE + CH1RDHRH_Offset + 1 + DAC_Align )) = (uint8_t)DAC_Data;
  }
  else
  {
    /* Check the parameter */
    assert_param(IS_DAC_DATA_08R(DAC_Data));

    /* Set the DAC channel1 selected data holding register */
    DAC->CH1DHR8 = (uint8_t)(DAC_Data);
  }
}

/**
  * @brief  Set the specified data holding register value for DAC channel2.
  * @param  DAC_Align: Specifies the data alignment for DAC channel2.
  *          This parameter can be one of the following values:
  *            @arg DAC_Align_8b_R: 8bit right data alignment selected
  *            @arg DAC_Align_12b_L: 12bit left data alignment selected
  *            @arg DAC_Align_12b_R: 12bit right data alignment selected
  * @param  Data : Data to be loaded in the selected data holding register.
  * @retval None.
  */
void DAC_SetChannel2Data(DAC_Align_TypeDef DAC_Align, uint16_t DAC_Data)
{
  /* Check the parameters */
  assert_param(IS_DAC_ALIGN(DAC_Align));

  if (DAC_Align != DAC_Align_8b_R)
  {
    /* Set the DAC channel2 selected data holding register */
    *(uint8_t*)((uint16_t)(DAC_BASE + CH2RDHRH_Offset + DAC_Align )) = (uint8_t)(((uint16_t)DAC_Data) >> 8);
    *(uint8_t*)((uint16_t)(DAC_BASE + CH2RDHRH_Offset + 1 + DAC_Align )) = (uint8_t)DAC_Data;
  }
  else
  {
    /* Check the parameter */
    assert_param(IS_DAC_DATA_08R(DAC_Data));

    /* Set the DAC channel2 selected data holding register */
    DAC->CH2DHR8 = (uint8_t)(DAC_Data);
  }
}

/**
  * @brief  Set the specified data holding register value for dual channel DAC.
  * @param  DAC_Align: Specifies the data alignment for dual channel DAC.
  *          This parameter can be one of the following values:
  *            @arg DAC_Align_8b_R: 8bit right data alignment selected
  *            @arg DAC_Align_12b_L: 12bit left data alignment selected
  *            @arg DAC_Align_12b_R: 12bit right data alignment selected
  * @param  Data2: Data for DAC Channel2 to be loaded in the selected data 
  *         holding register.
  * @param  Data1: Data for DAC Channel1 to be loaded in the selected data 
  *         holding register.
  * @note In dual mode, a unique register access is required to write in both
  *       DAC channels at the same time.
  * @retval None.
  */
void DAC_SetDualChannelData(DAC_Align_TypeDef DAC_Align, uint16_t DAC_Data2, uint16_t DAC_Data1)
{
  uint16_t dchxrdhrhaddr = 0;

  /* Check the parameters */
  assert_param(IS_DAC_ALIGN(DAC_Align));

  if (DAC_Align != DAC_Align_8b_R)
  {
    /* Identify the DCHxRDHRH address*/
    dchxrdhrhaddr = (uint16_t)(DAC_BASE + DCH1RDHRH_Offset + DAC_Align);

    /* Set the DAC channels Dual data holding registers */
    *(uint8_t*)(uint16_t)dchxrdhrhaddr = (uint8_t)(((uint16_t)DAC_Data1) >> 8);
    *(uint8_t*)(uint16_t)(dchxrdhrhaddr + 1) = (uint8_t)DAC_Data1;
    *(uint8_t*)(uint16_t)(dchxrdhrhaddr + 2) = (uint8_t)(((uint16_t)DAC_Data2) >> 8);
    *(uint8_t*)(uint16_t)(dchxrdhrhaddr + 3) = (uint8_t)DAC_Data2;
  }
  else
  {
    /* Check the parameter */
    assert_param(IS_DAC_DATA_08R(DAC_Data1 | DAC_Data2));

    /* Set the DAC channels Dual data holding registers */
    DAC->DCH1DHR8 = (uint8_t)(DAC_Data1);
    DAC->DCH2DHR8 = (uint8_t)(DAC_Data2);
  }
}

/**
  * @brief  Returns the last data output value of the selected DAC channel.
  * @param  DAC_Channel: the selected DAC channel. 
  *          This parameter can be one of the following values:
  *            @arg DAC_Channel_1: DAC Channel1 selected
  *            @arg DAC_Channel_2: DAC Channel2 selected
  * @retval The selected DAC channel data output value.
  */
uint16_t DAC_GetDataOutputValue(DAC_Channel_TypeDef DAC_Channel)
{
  uint16_t outputdata = 0;
  uint16_t tmp = 0;