stm32f10x_dac.c

诺基亚5110 LCD资料

* Description    : Enables or disables the selected DAC channel software trigger.
* Input            - DAC_Channel: the selected DAC channel. 
*                    This parameter can be one of the following values:
*                       - DAC_Channel_1: DAC Channel1 selected
*                       - DAC_Channel_2: DAC Channel2 selected
*                  - NewState: new state of the selected DAC channel software trigger.
*                    This parameter can be: ENABLE or DISABLE.
* Output         : None
* Return         : None
*******************************************************************************/
void DAC_SoftwareTriggerCmd(u32 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 |= SWTRIGR_SWTRIG_Set << (DAC_Channel >> 4);
  }
  else
  {
    /* Disable software trigger for the selected DAC channel */
    DAC->SWTRIGR &= ~(SWTRIGR_SWTRIG_Set << (DAC_Channel >> 4));
  }
}

/*******************************************************************************
* Function Name  : DAC_DualSoftwareTriggerCmd
* Description    : Enables or disables simultaneously the two DAC channels software
*                  triggers.
* Input            - NewState: new state of the DAC channels software triggers.
*                    This parameter can be: ENABLE or DISABLE.
* Output         : None
* Return         : 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 |= DUAL_SWTRIG_Set ;
  }
  else
  {
    /* Disable software trigger for both DAC channels */
    DAC->SWTRIGR &= DUAL_SWTRIG_Reset;
  }
}

/*******************************************************************************
* Function Name  : DAC_WaveGenerationCmd
* Description    : Enables or disables the selected DAC channel wave generation.
* Input            - DAC_Channel: the selected DAC channel. 
*                    This parameter can be one of the following values:
*                       - DAC_Channel_1: DAC Channel1 selected
*                       - DAC_Channel_2: DAC Channel2 selected
*                  - DAC_Wave: Specifies the wave type to enable or disable.
*                    This parameter can be one of the following values:
*                       - DAC_Wave_Noise: noise wave generation
*                       - DAC_Wave_Triangle: triangle wave generation
*                  - NewState: new state of the selected DAC channel wave generation.
*                    This parameter can be: ENABLE or DISABLE.
* Output         : None
* Return         : None
*******************************************************************************/
void DAC_WaveGenerationCmd(u32 DAC_Channel, u32 DAC_Wave, FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_DAC_CHANNEL(DAC_Channel));
  assert_param(IS_DAC_WAVE(DAC_Wave)); 
  assert_param(IS_FUNCTIONAL_STATE(NewState));

  if (NewState != DISABLE)
  {
    /* Enable the selected wave generation for the selected DAC channel */
    DAC->CR |= DAC_Wave << DAC_Channel;
  }
  else
  {
    /* Disable the selected wave generation for the selected DAC channel */
    DAC->CR &= ~(DAC_Wave << DAC_Channel);
  }
}

/*******************************************************************************
* Function Name  : DAC_SetChannel1Data
* Description    : Set the specified data holding register value for DAC channel1.
* Input          : - DAC_Align: Specifies the data alignement for DAC channel1.
*                    This parameter can be one of the following values:
*                       - DAC_Align_8b_R: 8bit right data alignement selected
*                       - DAC_Align_12b_L: 12bit left data alignement selected
*                       - DAC_Align_12b_R: 12bit right data alignement selected
*                  - Data : Data to be loaded in the selected data holding 
*                    register.
* Output         : None
* Return         : None
*******************************************************************************/
void DAC_SetChannel1Data(u32 DAC_Align, u16 Data)
{
  /* Check the parameters */
  assert_param(IS_DAC_ALIGN(DAC_Align));
  assert_param(IS_DAC_DATA(Data));

  /* Set the DAC channel1 selected data holding register */
  *((vu32 *)(DAC_BASE + DHR12R1_Offset + DAC_Align)) = (u32)Data;
}

/*******************************************************************************
* Function Name  : DAC_SetChannel2Data
* Description    : Set the specified data holding register value for DAC channel2.
* Input          : - DAC_Align: Specifies the data alignement for DAC channel2.
*                    This parameter can be one of the following values:
*                       - DAC_Align_8b_R: 8bit right data alignement selected
*                       - DAC_Align_12b_L: 12bit left data alignement selected
*                       - DAC_Align_12b_R: 12bit right data alignement selected
*                  - Data : Data to be loaded in the selected data holding 
*                    register.
* Output         : None
* Return         : None
*******************************************************************************/
void DAC_SetChannel2Data(u32 DAC_Align, u16 Data)
{
  /* Check the parameters */
  assert_param(IS_DAC_ALIGN(DAC_Align));
  assert_param(IS_DAC_DATA(Data));

  /* Set the DAC channel2 selected data holding register */
  *((vu32 *)(DAC_BASE + DHR12R2_Offset + DAC_Align)) = (u32)Data;
}

/*******************************************************************************
* Function Name  : DAC_SetDualChannelData
* Description    : Set the specified data holding register value for dual channel
*                  DAC.
* Input          : - DAC_Align: Specifies the data alignement for dual channel DAC.
*                    This parameter can be one of the following values:
*                       - DAC_Align_8b_R: 8bit right data alignement selected
*                       - DAC_Align_12b_L: 12bit left data alignement selected
*                       - DAC_Align_12b_R: 12bit right data alignement selected
*                  - Data2: Data for DAC Channel2 to be loaded in the selected data 
*                    holding register.
*                  - Data1: Data for DAC Channel1 to be loaded in the selected data 
*                    holding register.
* Output         : None
* Return         : None
*******************************************************************************/
void DAC_SetDualChannelData(u32 DAC_Align, u16 Data2, u16 Data1)
{
  u32 data = 0;

  /* Check the parameters */
  assert_param(IS_DAC_ALIGN(DAC_Align));
  assert_param(IS_DAC_DATA(Data1));
  assert_param(IS_DAC_DATA(Data2));
  
  /* Calculate and set dual DAC data holding register value */
  if (DAC_Align == DAC_Align_8b_R)
  {
    data = ((u32)Data2 << 8) | Data1; 
  }
  else
  {
    data = ((u32)Data2 << 16) | Data1;
  }

  /* Set the dual DAC selected data holding register */
  *((vu32 *)(DAC_BASE + DHR12RD_Offset + DAC_Align)) = data;
}

/*******************************************************************************
* Function Name  : DAC_GetDataOutputValue
* Description    : Returns the last data output value of the selected DAC cahnnel.
* Input            - DAC_Channel: the selected DAC channel. 
*                    This parameter can be one of the following values:
*                       - DAC_Channel_1: DAC Channel1 selected
*                       - DAC_Channel_2: DAC Channel2 selected
* Output         : None
* Return         : The selected DAC channel data output value.
*******************************************************************************/
u16 DAC_GetDataOutputValue(u32 DAC_Channel)
{
  /* Check the parameters */
  assert_param(IS_DAC_CHANNEL(DAC_Channel));

  /* Returns the DAC channel data output register value */
  return (u16) (*(vu32*)(DAC_BASE + DOR_Offset + ((u32)DAC_Channel >> 2)));
}

/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/