stm32f10x_tim.c

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*                  signal.
* Input          : - TIMx: where x can be  1, 2, 3, 4, 5 or 8 to select the TIM 
*                    peripheral.
*                  - TIM_ICInitStruct: pointer to a TIM_ICInitTypeDef structure
*                    that contains the configuration information for the specified
*                    TIM peripheral.
* Output         : None
* Return         : None
*******************************************************************************/
void TIM_PWMIConfig(TIM_TypeDef* TIMx, TIM_ICInitTypeDef* TIM_ICInitStruct)
{
  u16 icoppositepolarity = TIM_ICPolarity_Rising;
  u16 icoppositeselection = TIM_ICSelection_DirectTI;

  /* Check the parameters */
  assert_param(IS_TIM_123458_PERIPH(TIMx));

  /* Select the Opposite Input Polarity */
  if (TIM_ICInitStruct->TIM_ICPolarity == TIM_ICPolarity_Rising)
  {
    icoppositepolarity = TIM_ICPolarity_Falling;
  }
  else
  {
    icoppositepolarity = TIM_ICPolarity_Rising;
  }

  /* Select the Opposite Input */
  if (TIM_ICInitStruct->TIM_ICSelection == TIM_ICSelection_DirectTI)
  {
    icoppositeselection = TIM_ICSelection_IndirectTI;
  }
  else
  {
    icoppositeselection = TIM_ICSelection_DirectTI;
  }

  if (TIM_ICInitStruct->TIM_Channel == TIM_Channel_1)
  {
    /* TI1 Configuration */
    TI1_Config(TIMx, TIM_ICInitStruct->TIM_ICPolarity, TIM_ICInitStruct->TIM_ICSelection,
               TIM_ICInitStruct->TIM_ICFilter);

    /* Set the Input Capture Prescaler value */
    TIM_SetIC1Prescaler(TIMx, TIM_ICInitStruct->TIM_ICPrescaler);

    /* TI2 Configuration */
    TI2_Config(TIMx, icoppositepolarity, icoppositeselection, TIM_ICInitStruct->TIM_ICFilter);

    /* Set the Input Capture Prescaler value */
    TIM_SetIC2Prescaler(TIMx, TIM_ICInitStruct->TIM_ICPrescaler);
  }
  else
  { 
    /* TI2 Configuration */
    TI2_Config(TIMx, TIM_ICInitStruct->TIM_ICPolarity, TIM_ICInitStruct->TIM_ICSelection,
               TIM_ICInitStruct->TIM_ICFilter);

    /* Set the Input Capture Prescaler value */
    TIM_SetIC2Prescaler(TIMx, TIM_ICInitStruct->TIM_ICPrescaler);

    /* TI1 Configuration */
    TI1_Config(TIMx, icoppositepolarity, icoppositeselection, TIM_ICInitStruct->TIM_ICFilter);

    /* Set the Input Capture Prescaler value */
    TIM_SetIC1Prescaler(TIMx, TIM_ICInitStruct->TIM_ICPrescaler);
  }
}

/*******************************************************************************
* Function Name  : TIM_BDTRConfig
* Description    : Configures the: Break feature, dead time, Lock level, the OSSI,
*                  the OSSR State and the AOE(automatic output enable).
* Input          :- TIMx: where x can be  1 or 8 to select the TIM 
*                 - TIM_BDTRInitStruct: pointer to a TIM_BDTRInitTypeDef
*                    structure that contains the BDTR Register configuration
*                    information for the TIM peripheral.
* Output         : None
* Return         : None
*******************************************************************************/
void TIM_BDTRConfig(TIM_TypeDef* TIMx, TIM_BDTRInitTypeDef *TIM_BDTRInitStruct)
{
  /* Check the parameters */
  assert_param(IS_TIM_18_PERIPH(TIMx));
  assert_param(IS_TIM_OSSR_STATE(TIM_BDTRInitStruct->TIM_OSSRState));
  assert_param(IS_TIM_OSSI_STATE(TIM_BDTRInitStruct->TIM_OSSIState));
  assert_param(IS_TIM_LOCK_LEVEL(TIM_BDTRInitStruct->TIM_LOCKLevel));
  assert_param(IS_TIM_BREAK_STATE(TIM_BDTRInitStruct->TIM_Break));
  assert_param(IS_TIM_BREAK_POLARITY(TIM_BDTRInitStruct->TIM_BreakPolarity));
  assert_param(IS_TIM_AUTOMATIC_OUTPUT_STATE(TIM_BDTRInitStruct->TIM_AutomaticOutput));

  /* Set the Lock level, the Break enable Bit and the Ploarity, the OSSR State,
     the OSSI State, the dead time value and the Automatic Output Enable Bit */

  TIMx->BDTR = (u32)TIM_BDTRInitStruct->TIM_OSSRState | TIM_BDTRInitStruct->TIM_OSSIState |
             TIM_BDTRInitStruct->TIM_LOCKLevel | TIM_BDTRInitStruct->TIM_DeadTime |
             TIM_BDTRInitStruct->TIM_Break | TIM_BDTRInitStruct->TIM_BreakPolarity |
             TIM_BDTRInitStruct->TIM_AutomaticOutput;

}

/*******************************************************************************
* Function Name  : TIM_TimeBaseStructInit
* Description    : Fills each TIM_TimeBaseInitStruct member with its default value.
* Input          : - TIM_TimeBaseInitStruct : pointer to a TIM_TimeBaseInitTypeDef
*                    structure which will be initialized.
* Output         : None
* Return         : None
*******************************************************************************/
void TIM_TimeBaseStructInit(TIM_TimeBaseInitTypeDef* TIM_TimeBaseInitStruct)
{
  /* Set the default configuration */
  TIM_TimeBaseInitStruct->TIM_Period = 0xFFFF;
  TIM_TimeBaseInitStruct->TIM_Prescaler = 0x0000;
  TIM_TimeBaseInitStruct->TIM_ClockDivision = TIM_CKD_DIV1;
  TIM_TimeBaseInitStruct->TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseInitStruct->TIM_RepetitionCounter = 0x0000;
}

/*******************************************************************************
* Function Name  : TIM_OCStructInit
* Description    : Fills each TIM_OCInitStruct member with its default value.
* Input          : - TIM_OCInitStruct : pointer to a TIM_OCInitTypeDef structure
*                    which will be initialized.
* Output         : None
* Return         : None
*******************************************************************************/
void TIM_OCStructInit(TIM_OCInitTypeDef* TIM_OCInitStruct)
{
  /* Set the default configuration */
  TIM_OCInitStruct->TIM_OCMode = TIM_OCMode_Timing;
  TIM_OCInitStruct->TIM_OutputState = TIM_OutputState_Disable;
  TIM_OCInitStruct->TIM_OutputNState = TIM_OutputNState_Disable;
  TIM_OCInitStruct->TIM_Pulse = 0x0000;
  TIM_OCInitStruct->TIM_OCPolarity = TIM_OCPolarity_High;
  TIM_OCInitStruct->TIM_OCNPolarity = TIM_OCPolarity_High;
  TIM_OCInitStruct->TIM_OCIdleState = TIM_OCIdleState_Reset;
  TIM_OCInitStruct->TIM_OCNIdleState = TIM_OCNIdleState_Reset;
}

/*******************************************************************************
* Function Name  : TIM_ICStructInit
* Description    : Fills each TIM_ICInitStruct member with its default value.
* Input          : - TIM_ICInitStruct : pointer to a TIM_ICInitTypeDef structure
*                    which will be initialized.
* Output         : None
* Return         : None
*******************************************************************************/
void TIM_ICStructInit(TIM_ICInitTypeDef* TIM_ICInitStruct)
{
  /* Set the default configuration */
  TIM_ICInitStruct->TIM_Channel = TIM_Channel_1;
  TIM_ICInitStruct->TIM_ICPolarity = TIM_ICPolarity_Rising;
  TIM_ICInitStruct->TIM_ICSelection = TIM_ICSelection_DirectTI;
  TIM_ICInitStruct->TIM_ICPrescaler = TIM_ICPSC_DIV1;
  TIM_ICInitStruct->TIM_ICFilter = 0x00;
}

/*******************************************************************************
* Function Name  : TIM_BDTRStructInit
* Description    : Fills each TIM_BDTRInitStruct member with its default value.
* Input          : - TIM_BDTRInitStruct : pointer to a TIM_BDTRInitTypeDef
*                    structure which will be initialized.
* Output         : None
* Return         : None
*******************************************************************************/
void TIM_BDTRStructInit(TIM_BDTRInitTypeDef* TIM_BDTRInitStruct)
{
  /* Set the default configuration */
  TIM_BDTRInitStruct->TIM_OSSRState = TIM_OSSRState_Disable;
  TIM_BDTRInitStruct->TIM_OSSIState = TIM_OSSIState_Disable;
  TIM_BDTRInitStruct->TIM_LOCKLevel = TIM_LOCKLevel_OFF;
  TIM_BDTRInitStruct->TIM_DeadTime = 0x00;
  TIM_BDTRInitStruct->TIM_Break = TIM_Break_Disable;
  TIM_BDTRInitStruct->TIM_BreakPolarity = TIM_BreakPolarity_Low;
  TIM_BDTRInitStruct->TIM_AutomaticOutput = TIM_AutomaticOutput_Disable;
}

/*******************************************************************************
* Function Name  : TIM_Cmd
* Description    : Enables or disables the specified TIM peripheral.
* Input          : - TIMx: where x can be 1 to 8 to select the TIMx peripheral.
*                  - NewState: new state of the TIMx peripheral.
*                    This parameter can be: ENABLE or DISABLE.
* Output         : None
* Return         : None
*******************************************************************************/
void TIM_Cmd(TIM_TypeDef* TIMx, FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_TIM_ALL_PERIPH(TIMx));
  assert_param(IS_FUNCTIONAL_STATE(NewState));
  
  if (NewState != DISABLE)
  {
    /* Enable the TIM Counter */
    TIMx->CR1 |= CR1_CEN_Set;
  }
  else
  {
    /* Disable the TIM Counter */
    TIMx->CR1 &= CR1_CEN_Reset;
  }
}

/*******************************************************************************
* Function Name  : TIM_CtrlPWMOutputs
* Description    : Enables or disables the TIM peripheral Main Outputs.
* Input          :- TIMx: where x can be 1 or 8 to select the TIMx peripheral.
*                 - NewState: new state of the TIM peripheral Main Outputs.
*                    This parameter can be: ENABLE or DISABLE.
* Output         : None
* Return         : None
*******************************************************************************/
void TIM_CtrlPWMOutputs(TIM_TypeDef* TIMx, FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_TIM_18_PERIPH(TIMx));
  assert_param(IS_FUNCTIONAL_STATE(NewState));

  if (NewState != DISABLE)
  {
    /* Enable the TIM Main Output */
    TIMx->BDTR |= BDTR_MOE_Set;
  }
  else
  {
    /* Disable the TIM Main Output */
    TIMx->BDTR &= BDTR_MOE_Reset;
  }  
}

/*******************************************************************************
* Function Name  : TIM_ITConfig
* Description    : Enables or disables the specified TIM interrupts.
* Input          : - TIMx: where x can be 1 to 8 to select the TIMx peripheral.
*                  - TIM_IT: specifies the TIM interrupts sources to be enabled
*                    or disabled.
*                    This parameter can be any combination of the following values:
*                       - TIM_IT_Update: TIM update Interrupt source
*                       - TIM_IT_CC1: TIM Capture Compare 1 Interrupt source
*                       - TIM_IT_CC2: TIM Capture Compare 2 Interrupt source
*                       - TIM_IT_CC3: TIM Capture Compare 3 Interrupt source
*                       - TIM_IT_CC4: TIM Capture Compare 4 Interrupt source
*                       - TIM_IT_COM: TIM Commutation Interrupt source
*                       - TIM_IT_Trigger: TIM Trigger Interrupt source
*                       - TIM_IT_Break: TIM Break Interrupt source
*                  - NewState: new state of the TIM interrupts.
*                    This parameter can be: ENABLE or DISABLE.
* Output         : None
* Return         : None
*******************************************************************************/
void TIM_ITConfig(TIM_TypeDef* TIMx, u16 TIM_IT, FunctionalState NewState)
{  
  /* Check the parameters */
  assert_param(IS_TIM_ALL_PERIPH(TIMx));
  assert_param(IS_TIM_IT(TIM_IT));
  assert_param(IS_TIM_PERIPH_IT((TIMx), (TIM_IT)));
  assert_param(IS_FUNCTIONAL_STATE(NewState));
  
  if (NewState != DISABLE)
  {
    /* Enable the Interrupt sources */
    TIMx->DIER |= TIM_IT;
  }
  else
  {
    /* Disable the Interrupt sources */
    TIMx->DIER &= (u16)~TIM_IT;
  }
}

/*******************************************************************************
* Function Name  : TIM_GenerateEvent
* Description    : Configures the TIMx event to be generate by software.
* Input          : - TIMx: where x can be 1 to 8 to select the TIM peripheral.
*                  - TIM_EventSource: specifies the event source.
*                    This parameter can be one or more of the following values:	   
*                       - TIM_EventSource_Update: Timer update Event source
*                       - TIM_EventSource_CC1: Timer Capture Compare 1 Event source
*                       - TIM_EventSource_CC2: Timer Capture Compare 2 Event source
*                       - TIM_EventSource_CC3: Timer Capture Compare 3 Event source
*                       - TIM_EventSource_CC4: Timer Capture Compare 4 Event source
*                       - TIM_EventSource_Trigger: Timer Trigger Event source
* Output         : None
* Return         : None
*******************************************************************************/
void TIM_GenerateEvent(TIM_TypeDef* TIMx, u16 TIM_EventSource)
{ 
  /* Check the parameters */
  assert_param(IS_TIM_ALL_PERIPH(TIMx));
  assert_param(IS_TIM_EVENT_SOURCE(TIM_EventSource));
  assert_param(IS_TIM_PERIPH_EVENT((TIMx), (TIM_EventSource)));

  /* Set the event sources */
  TIMx->EGR = TIM_EventSource;
}

/*******************************************************************************
* Function Name  : TIM_DMAConfig
* Description    : Configures the TIMx抯 DMA interface.
* Input          : - TIMx: where x can be  1, 2, 3, 4, 5 or 8 to select the TIM 
*                    peripheral.
*                  - TIM_DMABase: DMA Base address.
*                    This parameter can be one of the following values:
*                       - TIM_DMABase_CR, TIM_DMABase_CR2, TIM_DMABase_SMCR,
*                         TIM_DMABase_DIER, TIM1_DMABase_SR, TIM_DMABase_EGR,
*                         TIM_DMABase_CCMR1, TIM_DMABase_CCMR2, TIM_DMABase_CCER,
*                         TIM_DMABase_CNT, TIM_DMABase_PSC, TIM_DMABase_ARR,
*                         TIM_DMABase_RCR, TIM_DMABase_CCR1, TIM_DMABase_CCR2,
*                         TIM_DMABase_CCR3, TIM_DMABase_CCR4, TIM_DMABase_BDTR,
*                         TIM_DMABase_DCR.
*                   - TIM_DMABurstLength: DMA Burst length.
*                     This parameter can be one value between:
*                     TIM_DMABurstLength_1Byte and TIM_DMABurstLength_18Bytes.
* Output         : None
* Return         : None
*******************************************************************************/
void TIM_DMAConfig(TIM_TypeDef* TIMx, u16 TIM_DMABase, u16 TIM_DMABurstLength)
{