stm32f10x_tim.c

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*                    peripheral.
*                  - TIM_OCInitStruct: pointer to a TIM_OCInitTypeDef structure
*                    that contains the configuration information for the specified
*                    TIM peripheral.
* Output         : None
* Return         : None
*******************************************************************************/
void TIM_OC2Init(TIM_TypeDef* TIMx, TIM_OCInitTypeDef* TIM_OCInitStruct)
{
  u16 tmpccmrx = 0, tmpccer = 0, tmpcr2 = 0;
   
  /* Check the parameters */
  assert_param(IS_TIM_123458_PERIPH(TIMx)); 
  assert_param(IS_TIM_OC_MODE(TIM_OCInitStruct->TIM_OCMode));
  assert_param(IS_TIM_OUTPUT_STATE(TIM_OCInitStruct->TIM_OutputState));
  assert_param(IS_TIM_OC_POLARITY(TIM_OCInitStruct->TIM_OCPolarity));   

  /* Disable the Channel 2: Reset the CC2E Bit */
  TIMx->CCER &= CCER_CC2E_Reset;
  
  /* Get the TIMx CCER register value */  
  tmpccer = TIMx->CCER;

  /* Get the TIMx CR2 register value */
  tmpcr2 =  TIMx->CR2;
  
  /* Get the TIMx CCMR1 register value */
  tmpccmrx = TIMx->CCMR1;
    
  /* Reset the Output Compare Mode Bits */
  tmpccmrx &= CCMR_OC24M_Mask;
  
  /* Select the Output Compare Mode */
  tmpccmrx |= (u16)(TIM_OCInitStruct->TIM_OCMode << 8);
  
  /* Reset the Output Polarity level */
  tmpccer &= CCER_CC2P_Reset;

  /* Set the Output Compare Polarity */
  tmpccer |= (u16)(TIM_OCInitStruct->TIM_OCPolarity << 4);
  
  /* Set the Output State */
  tmpccer |= (u16)(TIM_OCInitStruct->TIM_OutputState << 4);
  
  /* Set the Capture Compare Register value */
  TIMx->CCR2 = TIM_OCInitStruct->TIM_Pulse;
  
  if((*(u32*)&TIMx == TIM1_BASE) || (*(u32*)&TIMx == TIM8_BASE))
  {
    assert_param(IS_TIM_OUTPUTN_STATE(TIM_OCInitStruct->TIM_OutputNState));
    assert_param(IS_TIM_OCN_POLARITY(TIM_OCInitStruct->TIM_OCNPolarity));
    assert_param(IS_TIM_OCNIDLE_STATE(TIM_OCInitStruct->TIM_OCNIdleState));
    assert_param(IS_TIM_OCIDLE_STATE(TIM_OCInitStruct->TIM_OCIdleState));
    
    /* Reset the Output N Polarity level */
    tmpccer &= CCER_CC2NP_Reset;

    /* Set the Output N Polarity */
    tmpccer |= (u16)(TIM_OCInitStruct->TIM_OCNPolarity << 4);

    /* Reset the Output N State */
    tmpccer &= CCER_CC2NE_Reset;
    
    /* Set the Output N State */
    tmpccer |= (u16)(TIM_OCInitStruct->TIM_OutputNState << 4);

    /* Reset the Ouput Compare and Output Compare N IDLE State */
    tmpcr2 &= CR2_OIS2_Reset;
    tmpcr2 &= CR2_OIS2N_Reset;

    /* Set the Output Idle state */
    tmpcr2 |= (u16)(TIM_OCInitStruct->TIM_OCIdleState << 2);

    /* Set the Output N Idle state */
    tmpcr2 |= (u16)(TIM_OCInitStruct->TIM_OCNIdleState << 2);
  }

  /* Write to TIMx CR2 */
  TIMx->CR2 = tmpcr2;
  
  /* Write to TIMx CCMR1 */
  TIMx->CCMR1 = tmpccmrx;
  
  /* Write to TIMx CCER */
  TIMx->CCER = tmpccer;
}

/*******************************************************************************
* Function Name  : TIM_OC3Init
* Description    : Initializes the TIMx Channel3 according to the specified
*                  parameters in the TIM_OCInitStruct.
* Input          : - TIMx: where x can be  1, 2, 3, 4, 5 or 8 to select the TIM 
*                    peripheral.
*                  - TIM_OCInitStruct: pointer to a TIM_OCInitTypeDef structure
*                    that contains the configuration information for the specified
*                    TIM peripheral.
* Output         : None
* Return         : None
*******************************************************************************/
void TIM_OC3Init(TIM_TypeDef* TIMx, TIM_OCInitTypeDef* TIM_OCInitStruct)
{
  u16 tmpccmrx = 0, tmpccer = 0, tmpcr2 = 0;
   
  /* Check the parameters */
  assert_param(IS_TIM_123458_PERIPH(TIMx)); 
  assert_param(IS_TIM_OC_MODE(TIM_OCInitStruct->TIM_OCMode));
  assert_param(IS_TIM_OUTPUT_STATE(TIM_OCInitStruct->TIM_OutputState));
  assert_param(IS_TIM_OC_POLARITY(TIM_OCInitStruct->TIM_OCPolarity));   

  /* Disable the Channel 2: Reset the CC2E Bit */
  TIMx->CCER &= CCER_CC3E_Reset;
  
  /* Get the TIMx CCER register value */
  tmpccer = TIMx->CCER;

  /* Get the TIMx CR2 register value */
  tmpcr2 =  TIMx->CR2;
  
  /* Get the TIMx CCMR2 register value */
  tmpccmrx = TIMx->CCMR2;
    
  /* Reset the Output Compare Mode Bits */
  tmpccmrx &= CCMR_OC13M_Mask;
  
  /* Select the Output Compare Mode */
  tmpccmrx |= TIM_OCInitStruct->TIM_OCMode;
  
  /* Reset the Output Polarity level */
  tmpccer &= CCER_CC3P_Reset;

  /* Set the Output Compare Polarity */
  tmpccer |= (u16)(TIM_OCInitStruct->TIM_OCPolarity << 8);
  
  /* Set the Output State */
  tmpccer |= (u16)(TIM_OCInitStruct->TIM_OutputState << 8);
  
  /* Set the Capture Compare Register value */
  TIMx->CCR3 = TIM_OCInitStruct->TIM_Pulse;
  
  if((*(u32*)&TIMx == TIM1_BASE) || (*(u32*)&TIMx == TIM8_BASE))
  {
    assert_param(IS_TIM_OUTPUTN_STATE(TIM_OCInitStruct->TIM_OutputNState));
    assert_param(IS_TIM_OCN_POLARITY(TIM_OCInitStruct->TIM_OCNPolarity));
    assert_param(IS_TIM_OCNIDLE_STATE(TIM_OCInitStruct->TIM_OCNIdleState));
    assert_param(IS_TIM_OCIDLE_STATE(TIM_OCInitStruct->TIM_OCIdleState));
    
    /* Reset the Output N Polarity level */
    tmpccer &= CCER_CC3NP_Reset;

    /* Set the Output N Polarity */
    tmpccer |= (u16)(TIM_OCInitStruct->TIM_OCNPolarity << 8);

    /* Reset the Output N State */
    tmpccer &= CCER_CC3NE_Reset;
    
    /* Set the Output N State */
    tmpccer |= (u16)(TIM_OCInitStruct->TIM_OutputNState << 8);

    /* Reset the Ouput Compare and Output Compare N IDLE State */
    tmpcr2 &= CR2_OIS3_Reset;
    tmpcr2 &= CR2_OIS3N_Reset;

    /* Set the Output Idle state */
    tmpcr2 |= (u16)(TIM_OCInitStruct->TIM_OCIdleState << 4);

    /* Set the Output N Idle state */
    tmpcr2 |= (u16)(TIM_OCInitStruct->TIM_OCNIdleState << 4);
  }

  /* Write to TIMx CR2 */
  TIMx->CR2 = tmpcr2;
  
  /* Write to TIMx CCMR2 */
  TIMx->CCMR2 = tmpccmrx;
  
  /* Write to TIMx CCER */
  TIMx->CCER = tmpccer;
}

/*******************************************************************************
* Function Name  : TIM_OC4Init
* Description    : Initializes the TIMx Channel4 according to the specified
*                  parameters in the TIM_OCInitStruct.
* Input          : - TIMx: where x can be  1, 2, 3, 4, 5 or 8 to select the TIM 
*                    peripheral.
*                  - TIM_OCInitStruct: pointer to a TIM_OCInitTypeDef structure
*                    that contains the configuration information for the specified
*                    TIM peripheral.
* Output         : None
* Return         : None
*******************************************************************************/
void TIM_OC4Init(TIM_TypeDef* TIMx, TIM_OCInitTypeDef* TIM_OCInitStruct)
{
  u16 tmpccmrx = 0, tmpccer = 0, tmpcr2 = 0;
   
  /* Check the parameters */
  assert_param(IS_TIM_123458_PERIPH(TIMx)); 
  assert_param(IS_TIM_OC_MODE(TIM_OCInitStruct->TIM_OCMode));
  assert_param(IS_TIM_OUTPUT_STATE(TIM_OCInitStruct->TIM_OutputState));
  assert_param(IS_TIM_OC_POLARITY(TIM_OCInitStruct->TIM_OCPolarity));   

  /* Disable the Channel 2: Reset the CC4E Bit */
  TIMx->CCER &= CCER_CC4E_Reset;
  
  /* Get the TIMx CCER register value */
  tmpccer = TIMx->CCER;

  /* Get the TIMx CR2 register value */
  tmpcr2 =  TIMx->CR2;
  
  /* Get the TIMx CCMR2 register value */
  tmpccmrx = TIMx->CCMR2;
    
  /* Reset the Output Compare Mode Bits */
  tmpccmrx &= CCMR_OC24M_Mask;
  
  /* Select the Output Compare Mode */
  tmpccmrx |= (u16)(TIM_OCInitStruct->TIM_OCMode << 8);
  
  /* Reset the Output Polarity level */
  tmpccer &= CCER_CC4P_Reset;

  /* Set the Output Compare Polarity */
  tmpccer |= (u16)(TIM_OCInitStruct->TIM_OCPolarity << 12);
  
  /* Set the Output State */
  tmpccer |= (u16)(TIM_OCInitStruct->TIM_OutputState << 12);
  
  /* Set the Capture Compare Register value */
  TIMx->CCR4 = TIM_OCInitStruct->TIM_Pulse;
  
  if((*(u32*)&TIMx == TIM1_BASE) || (*(u32*)&TIMx == TIM8_BASE))
  {
    assert_param(IS_TIM_OCIDLE_STATE(TIM_OCInitStruct->TIM_OCIdleState));

    /* Reset the Ouput Compare IDLE State */
    tmpcr2 &= CR2_OIS4_Reset;

    /* Set the Output Idle state */
    tmpcr2 |= (u16)(TIM_OCInitStruct->TIM_OCIdleState << 6);
  }

  /* Write to TIMx CR2 */
  TIMx->CR2 = tmpcr2;
  
  /* Write to TIMx CCMR2 */  
  TIMx->CCMR2 = tmpccmrx;
  
  /* Write to TIMx CCER */
  TIMx->CCER = tmpccer;
}

/*******************************************************************************
* Function Name  : TIM_ICInit
* Description    : Initializes the TIM peripheral according to the specified
*                  parameters in the TIM_ICInitStruct.
* 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_ICInit(TIM_TypeDef* TIMx, TIM_ICInitTypeDef* TIM_ICInitStruct)
{
  /* Check the parameters */
  assert_param(IS_TIM_123458_PERIPH(TIMx));
  assert_param(IS_TIM_CHANNEL(TIM_ICInitStruct->TIM_Channel));
  assert_param(IS_TIM_IC_POLARITY(TIM_ICInitStruct->TIM_ICPolarity));
  assert_param(IS_TIM_IC_SELECTION(TIM_ICInitStruct->TIM_ICSelection));
  assert_param(IS_TIM_IC_PRESCALER(TIM_ICInitStruct->TIM_ICPrescaler));
  assert_param(IS_TIM_IC_FILTER(TIM_ICInitStruct->TIM_ICFilter));
  
  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);
  }
  else if (TIM_ICInitStruct->TIM_Channel == TIM_Channel_2)
  {
    /* 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);
  }
  else if (TIM_ICInitStruct->TIM_Channel == TIM_Channel_3)
  {
    /* TI3 Configuration */
    TI3_Config(TIMx,  TIM_ICInitStruct->TIM_ICPolarity,
               TIM_ICInitStruct->TIM_ICSelection,
               TIM_ICInitStruct->TIM_ICFilter);

    /* Set the Input Capture Prescaler value */
    TIM_SetIC3Prescaler(TIMx, TIM_ICInitStruct->TIM_ICPrescaler);
  }
  else
  {
    /* TI4 Configuration */
    TI4_Config(TIMx, TIM_ICInitStruct->TIM_ICPolarity,
               TIM_ICInitStruct->TIM_ICSelection,
               TIM_ICInitStruct->TIM_ICFilter);

    /* Set the Input Capture Prescaler value */
    TIM_SetIC4Prescaler(TIMx, TIM_ICInitStruct->TIM_ICPrescaler);
  }
}

/*******************************************************************************
* Function Name  : TIM_PWMIConfig
* Description    : Configures the TIM peripheral according to the specified
*                  parameters in the TIM_ICInitStruct to measure an external PWM